{"id":19937,"date":"2026-07-24T14:39:40","date_gmt":"2026-07-24T14:39:40","guid":{"rendered":"https:\/\/nccstreetscape.co.uk\/Shop\/?p=19937"},"modified":"2026-07-24T14:40:44","modified_gmt":"2026-07-24T14:40:44","slug":"best-grout-for-porcelain-slabs","status":"publish","type":"post","link":"https:\/\/nccstreetscape.co.uk\/Shop\/blog\/best-grout-for-porcelain-slabs\/","title":{"rendered":"Best Grout for Porcelain Slabs: Epoxy vs Cement Compared"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">If you&#8217;re searching for the best grout for porcelain slabs, you want one without a long list of restrictions. Many grouts warn you not to use them in damp conditions, when rain is forecast, or if there&#8217;s residual water in the joints. Some make you wait at least 28 days after laying the slabs before grouting. Others demand a specific permeable or non-permeable base. All of that is far too limiting.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You also want a grout that doesn&#8217;t stain, and one that easily withstands jet-washing to keep your porcelain paving pristine. Above all, you want a joint that still looks sharp in five years \u2014 not one that cracks and lets weeds grow by next summer.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Porcelain is hard, dense and non-absorbent, so the type of grout you use really matters for a strong bond in the joints. In this easy guide, we compare the options so you can choose with confidence.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why porcelain needs a special grout<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">External porcelain tiles are dense and barely absorb water. As a result, cement-based grouts and brush-in compounds struggle to bond to them. They often shrink, crack and lift in a short time.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So the grout you choose for your porcelain paving must bond to the sides of the joint without needing the slab to &#8220;soak it up&#8221;. It must also shrug off frost, rain and traffic \u2014 whether pedestrian or vehicular. For all these reasons, the best grout for porcelain slabs is a tenacious epoxy grout, rather than cement or brush-in compounds.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Types of porcelain grout, compared<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. Epoxy (wet-slurry) grout \u2014 the professional choice<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The best 2-part epoxy grout mixes a 2nd-generation, non-staining epoxy resin with graded sand to form a free-flowing slurry. You simply pour it on and squeegee it into the joints. There, it self-compacts and bonds tightly to the smooth, dense edges of the porcelain. Because the bond doesn&#8217;t rely on surface absorption, it works brilliantly on these non-permeable slabs.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extremely durable \u2014 it won&#8217;t shrink, crack or wash out.<\/li>\n\n\n\n<li>Frost, de-icing salt and jet-wash resistant, with weed-free joints.<\/li>\n\n\n\n<li>Non-staining, fast to apply, and done mostly standing up rather than on your hands and knees.<\/li>\n\n\n\n<li>Higher upfront cost than cement or brush-ins \u2014 but a far longer service life.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This is increasingly what professionals use on quality external porcelain paving, and it&#8217;s widely regarded as the best grout for porcelain slabs. For narrow joints from 3mm, <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\">GftK vdw 815+<\/a> is the go-to. For wider joints from 5mm, or areas taking vehicles, use <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\">GftK vdw 850+<\/a>. Both are made by <a href=\"https:\/\/www.gftk.de\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">GftK<\/a>, the global leaders in paving jointing technology.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. Brush-in jointing compound<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You open the vacuum-sealed bag, pour the material onto the paving, and brush it into the joints while dry or slightly damp. Most then need compacting again with a pointing trowel, which is time-consuming and gives limited results. These compounds are cheap and DIY-friendly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, they need a very permeable base and aren&#8217;t resistant to jet-washing. So they don&#8217;t suit most porcelain patios, which need frequent cleaning to stay pristine. Over a fairly short time they also tend to crack, discolour, wash out or let weeds through. In short, they only suit smaller, lighter-use patios. (The one exception is GftK&#8217;s own <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/patio-grout-with-gftk-technology\/\">Patio Grout<\/a> and <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-840-paving-joint-mortar\/\">vdw 840+<\/a>, which \u2014 unlike other brush-ins \u2014 can even be applied in wet weather.)<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. Cement-based pre-bagged slurry grout<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These are easier-to-use, cement-based slurry mixes, and quality varies a lot by brand. They install quickly and can be reasonably durable on domestic patios \u2014 but only if applied in completely dry conditions with no residual water in the joints. Otherwise they often fail within a year or two.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cleaning off cement grout afterwards is also a big job that needs special equipment, such as a wash-boy. So unless you&#8217;re experienced and equipped, it&#8217;s best avoided. If you do go ahead and then need to remove the dried &#8220;haze&#8221;, we can help \u2014 see our <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product-category\/paving-cleaners\/\">Paving Cleaners<\/a> range. One warning: never use brick acid or anything similar on porcelain surfaces.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4. Twin-cartridge epoxy resin grout<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">These are applied from a 2-part cartridge with a strong sealant gun. They&#8217;re hard to extrude unless you warm them right up, and even then they can be messy. They suit small areas and quick repairs. For a few joints they&#8217;re handy. Across a larger patio, though, they&#8217;re slow, expensive and back-breaking \u2014 so they&#8217;re not ideal for bigger porcelain areas.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5. Cement-based brush-in mix (pre-bagged or site-batched)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Dry brushed-in sand and cement is the old traditional method, and it&#8217;s making a comeback, including in pre-bagged form. Usually, though, it&#8217;s the wrong choice. It&#8217;s quick to apply, but the hardened quality and performance in the joints varies wildly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">All cement-based grouts shrink. If the water-to-cement ratio is thrown off \u2014 by water in the joints, or too little or too much wetting \u2014 the material won&#8217;t cure correctly. It then cracks as it dries and leaves weak areas, especially at the surface. These cracks may not show straight away. It can take a few thermal cycles over several months \u2014 but the problem was set on day one.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This is why professionals who prefer cement (for its lower cost) usually choose slurry-type mortars instead, on larger areas where they control the conditions and equipment. With a dry mix pushed into the joints and wetted from above, the final strengths are unpredictable \u2014 not ideal for porcelain. It may look nice on the day, but check again a year later.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As with the slurry products, cement bonds poorly to dense, non-absorbent porcelain edges \u2014 something many people don&#8217;t realise. Efflorescence can also be a problem, and the grout soon fades or discolours. The biggest limitation, though, is timing and weather. The porcelain must be laid at least 28 days before grouting, and cement grout can only be applied in dry conditions, with a dry forecast and no water in the joints. Otherwise, shrinkage and cracking will follow.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Quick comparison<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here&#8217;s how the main porcelain jointing options compare \u2014 including how each handles the two things that catch people out most in the UK: wet weather and residual water in the joints.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Type<\/th><th>Wet Weather \/ Wet Forecast<\/th><th>Residual Water in the Joints (from rain or cleaning work)<\/th><th>Durability<\/th><th>Key Advantages<\/th><th>Potential Risks \/ Issues<\/th><\/tr><\/thead><tbody><tr><td>Brush-in compounds (vacuum-packed, air-drying, compound)<\/td><td>No (Except <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/patio-grout-with-gftk-technology\/\">GftK Patio Grout<\/a> \/ <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-840-paving-joint-mortar\/\">vdw 840+<\/a>)<\/td><td>No (Except <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/patio-grout-with-gftk-technology\/\">GftK Patio Grout<\/a> \/ <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-840-paving-joint-mortar\/\">vdw 840+<\/a>)<\/td><td>Low to Medium (not resistant to jet-washing)<\/td><td>Quick &amp; Easy, No Special Equipment<\/td><td>Staining, No Jet-washing, Limited Resistance<\/td><\/tr><tr><td>Cement-based: Traditional Sand &amp; Cement Pointing<\/td><td>No<\/td><td>No<\/td><td>Medium to High<\/td><td>Traditional Appearance &amp; Low Cost Materials<\/td><td>Slow, High Skilled Labour Cost &amp; Weather Sensitive<\/td><\/tr><tr><td>Cement-based: Wet-slurry Grout<\/td><td>No<\/td><td>No<\/td><td>Medium to High (risk of cracking)<\/td><td>Quick &amp; Relatively Low Cost Materials<\/td><td>Pro-use Only, Weather Sensitive, Risks of Staining &amp; Cracking<\/td><\/tr><tr><td>Cement-based: External Tile Grout<\/td><td>No<\/td><td>No<\/td><td>Medium<\/td><td>Unlimited Colours with Smooth Finish<\/td><td>Slow &amp; Weather Sensitive<\/td><\/tr><tr><td>Cement-based: Dry Sand &amp; Cement (prebagged)<\/td><td>No<\/td><td>No<\/td><td>Medium (risk of cracking)<\/td><td>Fast with Relatively Low Cost Materials<\/td><td>Very Weather Sensitive, Risks of Consistence, Cracking<\/td><\/tr><tr><td>Twin-cartridge Applied, 2-part Epoxy<\/td><td>No<\/td><td>No<\/td><td>High<\/td><td>Unlimited Colours with Smooth &amp; Durable Finish<\/td><td>Slow &amp; Weather Sensitive, Highest Material Cost<\/td><\/tr><tr><td><strong>2-part Epoxy (2nd-Gen.), Wet-slurry type, Non-staining (e.g. GftK vdw 815+ \/ 850+)<\/strong><\/td><td><strong>Yes \u2013 No Problem<\/strong><\/td><td><strong>Yes \u2013 No Problem<\/strong><\/td><td><strong>Very High<\/strong><\/td><td><strong>Fast &amp; Clean, Non-Staining, Work in Wet, High Porcelain Bond &amp; Durability<\/strong><\/td><td>Relatively High Initial Material Cost<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">So what is the best grout for porcelain slabs?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For a long-lasting, durable finish, the 2-part, non-staining (2nd-generation) wet-slurry epoxy grout is the clear winner. It&#8217;s the only option that combines quick, easy application with minimal site and weather limitations. It gives tough, high-performance joints that fully resist frost, weeds, staining and frequent jet-washing, for a long service life. The two products we recommend are:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\"><strong>GftK vdw 815+<\/strong><\/a> \u2014 for narrow joints (3mm+) on patios and terraces. Our everyday best-seller for porcelain.<\/li>\n\n\n\n<li><a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\"><strong>GftK vdw 850+<\/strong><\/a> \u2014 for wider joints (5mm+), most other paving types, and areas from garden patios and domestic driveways to commercial and public spaces with heavy traffic.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">You can also see the full range on our <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product-category\/gftk-paving-joint-mortars\/\">GftK Paving Joint Mortars<\/a> page.<\/p>\n\n\n\n<div data-wp-context=\"{&quot;notices&quot;:[],&quot;hideNextPreviousButtons&quot;:false,&quot;isDisabledPrevious&quot;:true,&quot;isDisabledNext&quot;:false,&quot;ariaLabelPrevious&quot;:&quot;Previous products&quot;,&quot;ariaLabelNext&quot;:&quot;Next products&quot;,&quot;collection&quot;:&quot;woocommerce\\\/product-collection\\\/hand-picked&quot;}\" data-wp-init=\"callbacks.onRender\" data-wp-interactive=\"woocommerce\/product-collection\" data-wp-router-region=\"wc-product-collection-0\" data-__private-preview-state=\"{&quot;isPreview&quot;:false,&quot;previewMessage&quot;:&quot;Actual products will vary depending on the page being viewed.&quot;}\" data-block-name=\"woocommerce\/product-collection\" data-collection=\"woocommerce\/product-collection\/hand-picked\" data-dimensions=\"{&quot;widthType&quot;:&quot;fill&quot;}\" data-display-layout=\"{&quot;type&quot;:&quot;flex&quot;,&quot;columns&quot;:5,&quot;shrinkColumns&quot;:true}\" data-hide-controls=\"[&quot;inherit&quot;,&quot;hand-picked&quot;,&quot;filterable&quot;,&quot;order&quot;]\" data-query-context-includes=\"[&quot;collection&quot;]\" data-query-id=\"0\" data-query=\"{&quot;perPage&quot;:9,&quot;pages&quot;:0,&quot;offset&quot;:0,&quot;postType&quot;:&quot;product&quot;,&quot;order&quot;:&quot;asc&quot;,&quot;orderBy&quot;:&quot;post__in&quot;,&quot;search&quot;:&quot;&quot;,&quot;exclude&quot;:[],&quot;inherit&quot;:false,&quot;taxQuery&quot;:[],&quot;isProductCollectionBlock&quot;:true,&quot;featured&quot;:false,&quot;woocommerceOnSale&quot;:false,&quot;woocommerceStockStatus&quot;:[&quot;instock&quot;,&quot;outofstock&quot;,&quot;onbackorder&quot;],&quot;woocommerceAttributes&quot;:[],&quot;woocommerceHandPickedProducts&quot;:[&quot;10682&quot;,&quot;10683&quot;],&quot;filterable&quot;:false,&quot;relatedBy&quot;:{&quot;categories&quot;:true,&quot;tags&quot;:true}}\" data-tag-name=\"div\" class=\"wp-block-woocommerce-product-collection is-layout-flow wp-block-woocommerce-product-collection-is-layout-flow\">\t\t<div data-wp-interactive=\"woocommerce\/store-notices\" class=\"wc-block-components-notices alignwide\">\n\t\t\t<template data-wp-each--notice=\"state.notices\" data-wp-each-key=\"context.notice.id\">\n\t\t\t\t<div\n\t\t\t\t\tclass=\"wc-block-components-notice-banner\"\n\t\t\t\t\tdata-wp-init=\"callbacks.scrollIntoView\"\n\t\t\t\t\tdata-wp-class--is-error=\"state.isError\"\n\t\t\t\t\tdata-wp-class--is-success=\"state.isSuccess\"\n\t\t\t\t\tdata-wp-class--is-info=\"state.isInfo\"\n\t\t\t\t\tdata-wp-class--is-dismissible=\"context.notice.dismissible\"\n\t\t\t\t\tdata-wp-bind--role=\"state.role\"\n\t\t\t\t\tdata-wp-watch=\"callbacks.injectIcon\"\n\t\t\t\t>\n\t\t\t\t\t<div class=\"wc-block-components-notice-banner__content\">\n\t\t\t\t\t\t<span data-wp-init=\"callbacks.renderNoticeContent\" aria-live=\"assertive\" aria-atomic=\"true\"><\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<button\n\t\t\t\t\t\tdata-wp-bind--hidden=\"!context.notice.dismissible\"\n\t\t\t\t\t\tclass=\"wc-block-components-button wp-element-button wc-block-components-notice-banner__dismiss contained\"\n\t\t\t\t\t\taria-label=\"Dismiss this notice\"\n\t\t\t\t\t\tdata-wp-on--click=\"actions.removeNotice\"\n\t\t\t\t\t>\n\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 24 24\">\n\t\t\t\t\t\t\t<path d=\"M13 11.8l6.1-6.3-1-1-6.1 6.2-6.1-6.2-1 1 6.1 6.3-6.5 6.7 1 1 6.5-6.6 6.5 6.6 1-1z\" \/>\n\t\t\t\t\t\t<\/svg>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/template>\n\t\t<\/div>\n\t\t\n<h2 class=\"wp-block-heading\" style=\"margin-bottom:1rem\">You can buy the best grout for porcelain slabs from here:<\/h2>\n\n\n<ul data-block-name=\"woocommerce\/product-template\" class=\"wc-block-product-template__responsive columns-5 wc-block-product-template wp-block-woocommerce-product-template is-layout-flow wp-block-woocommerce-product-template-is-layout-flow\" data-wp-on--scroll=\"actions.watchScroll\" data-wp-init=\"callbacks.initResizeObserver\"><li class=\"wc-block-product post-10682 product type-product status-publish has-post-thumbnail product_cat-gftk-paving-joint-mortars product_cat-porcelain-paving-treatments first instock featured taxable shipping-taxable purchasable product-type-variable has-default-attributes\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='woocommerce\/products::{\"productId\":10682,\"variationId\":null}'\n\t\t\t\tdata-wp-key=\"product-item-10682\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521659175-600x600.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Outdoor porcelain paving grout \u2013 GftK vdw 815 10kg\" data-testid=\"product-image\" data-image-id=\"10721\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521659175-600x600.jpg 600w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521659175-150x150.jpg 150w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521659175-80x80.jpg 80w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521659175-300x300.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.4;margin-bottom:0.75rem;margin-top:0\" class=\"has-text-align-left wp-block-post-title has-medium-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\" target=\"_self\" >GftK vdw 815+ &#8211; Grout for External Porcelain &#038; Natural Stone Paving<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-price\" data-font-size=\"small\" data-is-descendent-of-query-loop=\"true\" data-text-align=\"left\" class=\"has-font-size has-small-font-size has-text-align-left wp-block-woocommerce-product-price\" ><div class=\"wc-block-components-product-price wc-block-grid__product-price\" >\n\t\t\t\t\t<span class=\"woocommerce-Price-amount amount\" aria-hidden=\"true\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&pound;<\/span>60.68<\/bdi><\/span> <span aria-hidden=\"true\">&ndash;<\/span> <span class=\"woocommerce-Price-amount amount\" aria-hidden=\"true\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&pound;<\/span>62.82<\/bdi><\/span><span class=\"screen-reader-text\">Price range: &pound;60.68 through &pound;62.82<\/span>\n\t\t\t\t<\/div><\/div>\n\n<div data-block-name=\"woocommerce\/product-button\" data-font-size=\"small\" data-is-descendent-of-query-loop=\"true\" data-text-align=\"left\" class=\"wp-block-button wc-block-components-product-button align-left wp-block-woocommerce-product-button has-small-font-size\"\n\t\t\t\t\t\n\t\t\t\t\tdata-wp-context='{\"quantityToAdd\":1,\"addToCartText\":\"Select options\",\"tempQuantity\":0,\"animationStatus\":\"IDLE\",\"inTheCartText\":\"### in cart\",\"noticeId\":\"\",\"hasPressedButton\":false}'\n\t\t\t\t>\n\t\t\t\t\t<a\n\t\t\t\t\t\tclass=\"wp-block-button__link wp-element-button wc-block-components-product-button__button add_to_cart_button product_type_variable has-font-size has-small-font-size has-text-align-left wc-interactive\"\n\t\t\t\t\t\tstyle=\"\"\n\t\t\t\t\t\thref=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\" rel=\"nofollow\" data-product_id=\"10682\" data-product_sku=\"1010\" aria-label=\"Select options for &ldquo;GftK vdw 815+ - Grout for External Porcelain &amp; Natural Stone Paving&rdquo;\"\n\t\t\t\t\t\tdata-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"\n\t\t\t\t\t>\n\t\t\t\t\t<span >Select options<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\n\t\t\t\t<\/li><li class=\"wc-block-product post-10683 product type-product status-publish has-post-thumbnail product_cat-gftk-paving-joint-mortars product_cat-porcelain-paving-treatments  instock featured taxable shipping-taxable purchasable product-type-variable has-default-attributes\"\n\t\t\t\t\t\n\t\t\t\tdata-wp-interactive=\"woocommerce\/product-collection\"\n\t\t\t\tdata-wp-context='woocommerce\/products::{\"productId\":10683,\"variationId\":null}'\n\t\t\t\tdata-wp-key=\"product-item-10683\"\n\t\t\t\n\t\t\t\t>\n\t\t\t\t\t\n<div data-block-name=\"woocommerce\/product-image\" data-image-sizing=\"thumbnail\" data-is-descendent-of-query-loop=\"true\" data-show-sale-badge=\"false\" class=\"wc-block-components-product-image wc-block-grid__product-image wc-block-components-product-image--aspect-ratio-auto wp-block-woocommerce-product-image\"><a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\" style=\"\" data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521662030-1-600x600.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"GftK vdw 850 epoxy grout &amp; paving joint mortar 25kg\" data-testid=\"product-image\" data-image-id=\"10795\" style=\"object-fit:cover;\" loading=\"lazy\" srcset=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521662030-1-600x600.jpg 600w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521662030-1-150x150.jpg 150w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521662030-1-80x80.jpg 80w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/1521662030-1-300x300.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><div class=\"wc-block-components-product-image__inner-container\">\n\n<\/div><\/a><\/div>\n\n<h2 style=\"line-height:1.4;margin-bottom:0.75rem;margin-top:0\" class=\"has-text-align-left wp-block-post-title has-medium-font-size\"><a data-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\" href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\" target=\"_self\" >GftK vdw 850+ &#8211; Epoxy Jointing Grout for Natural Stone &#038; Porcelain Paving<\/a><\/h2>\n\n<div data-block-name=\"woocommerce\/product-price\" data-font-size=\"small\" data-is-descendent-of-query-loop=\"true\" data-text-align=\"left\" class=\"has-font-size has-small-font-size has-text-align-left wp-block-woocommerce-product-price\" ><div class=\"wc-block-components-product-price wc-block-grid__product-price\" >\n\t\t\t\t\t<span class=\"woocommerce-Price-amount amount\" aria-hidden=\"true\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&pound;<\/span>114.58<\/bdi><\/span> <span aria-hidden=\"true\">&ndash;<\/span> <span class=\"woocommerce-Price-amount amount\" aria-hidden=\"true\"><bdi><span class=\"woocommerce-Price-currencySymbol\" translate=\"no\">&pound;<\/span>118.83<\/bdi><\/span><span class=\"screen-reader-text\">Price range: &pound;114.58 through &pound;118.83<\/span>\n\t\t\t\t<\/div><\/div>\n\n<div data-block-name=\"woocommerce\/product-button\" data-font-size=\"small\" data-is-descendent-of-query-loop=\"true\" data-text-align=\"left\" class=\"wp-block-button wc-block-components-product-button align-left wp-block-woocommerce-product-button has-small-font-size\"\n\t\t\t\t\t\n\t\t\t\t\tdata-wp-context='{\"quantityToAdd\":1,\"addToCartText\":\"Select options\",\"tempQuantity\":0,\"animationStatus\":\"IDLE\",\"inTheCartText\":\"### in cart\",\"noticeId\":\"\",\"hasPressedButton\":false}'\n\t\t\t\t>\n\t\t\t\t\t<a\n\t\t\t\t\t\tclass=\"wp-block-button__link wp-element-button wc-block-components-product-button__button add_to_cart_button product_type_variable has-font-size has-small-font-size has-text-align-left wc-interactive\"\n\t\t\t\t\t\tstyle=\"\"\n\t\t\t\t\t\thref=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\" rel=\"nofollow\" data-product_id=\"10683\" data-product_sku=\"1050\" aria-label=\"Select options for &ldquo;GftK vdw 850+ - Epoxy Jointing Grout for Natural Stone &amp; Porcelain Paving&rdquo;\"\n\t\t\t\t\t\tdata-wp-on--click=\"woocommerce\/product-collection::actions.viewProduct\"\n\t\t\t\t\t>\n\t\t\t\t\t<span >Select options<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\n\t\t\t\t<\/li><\/ul><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How to choose the right one<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Choosing the best grout for porcelain slabs comes down to three things. First, measure your joint width. Porcelain slabs usually have tight 3\u20135mm joints, which suits vdw 815+. Wider or irregular joints suit vdw 850+. Next, think about exposure and traffic.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Finally \u2014 and this is often the most important part \u2014 think about the site conditions and the weather forecast, both while you grout and for a few days afterwards. The worst case is the right product used in the wrong conditions: a failure waiting to happen, often within a year. Fortunately, GftK covers this for you, with minimal limitations on joint size, wet weather, or residual water in the joints.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to apply it<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Applying the wet-slurry epoxy grout is straightforward once the slabs are pre-wetted to saturation and kept wet throughout. You mix the fully pre-batched product as shown \u2014 nothing to measure or add. Then pour the slurry onto the paving, and use a squeegee to move it across the surface so it self-compacts into the joints. Finally, rinse off the excess with more water. For the full process, see our <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/\">step-by-step guides and videos<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1708\" src=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1.jpg\" alt=\"\" class=\"wp-image-10725\" srcset=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1.jpg 2560w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-150x100.jpg 150w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-1200x801.jpg 1200w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-300x200.jpg 300w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-1024x683.jpg 1024w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-768x512.jpg 768w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-1536x1025.jpg 1536w, https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2025\/05\/9-GftK-vdw-815plus-Pour-onto-Prewetted-Porcelain-Surface-Southport-141-scaled-1-2048x1366.jpg 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Get free expert help<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Still not sure which product suits your project? No problem. For advice on any aspect of your porcelain paving, call the NCC Streetscape experts for free technical support and fast UK delivery. Call 01257 266696 or email <a href=\"mailto:sales@nccstreetscape.co.uk\">sales@nccstreetscape.co.uk<\/a>. It often helps to attach a couple of photos of anything specific you&#8217;d like them to see.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Which is the best grout for porcelain slabs?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The best grout for porcelain slabs is a 2nd-generation epoxy slurry grout \u2014 <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-815-paving-joint-mortar\/\"><strong>GftK vdw 815+<\/strong><\/a>+ or <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\"><strong><\/strong><\/a><strong><a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\"><strong>GftK vdw 850+<\/strong><\/a><\/strong> , depending on joint width. It bonds tightly to the non-absorbent porcelain edges, won&#8217;t crack, and resists frost and frequent jet-washing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What grout should I use for a porcelain driveway?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For porcelain on domestic driveways and parking areas \u2014 with a suitable structural build-up to carry the load \u2014 use <a href=\"https:\/\/nccstreetscape.co.uk\/Shop\/product\/gftk-vdw-850-paving-joint-mortar\/\"><strong>GftK vdw 850+<\/strong><\/a>. It&#8217;s a top-performing epoxy grout rated for vehicular traffic. We also recommend joints of at least 5mm to handle the extra stresses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can you use normal cement grout on porcelain slabs?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can, but we don&#8217;t recommend it. Cement grout shrinks, cracks and bonds poorly to non-absorbent porcelain, so it often fails within a few years. We&#8217;re regularly asked to advise on repointing porcelain patios that used cement or brush-in products \u2014 some after just a year. They&#8217;re cheaper per bag, but not if you have to repoint every couple of years. A 2-part, non-staining epoxy grout is a far better choice, and it can even be used in wet weather.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What is the best grout colour for porcelain paving?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">All the GftK epoxy grout colours give the same durable performance, so the colour is really up to you. Some people like a contrast, others a close match \u2014 and note that grout and porcelain can never be matched exactly anyway. If it helps: Stone Grey (light grey) is the most popular for a clean, modern look, while Natural Sand (a light beige-brown) and Basalt (a very dark grey) also work well.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you&#8217;re searching for the best grout for porcelain slabs, you want one without a long list of restrictions. Many<\/p>\n","protected":false},"author":1,"featured_media":19995,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[175,174,176],"tags":[179,181,180,177],"class_list":["post-19937","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-grouting-guides","category-paving-grout-guides","category-paving-guides","tag-epoxy-grout","tag-gftk-vdw","tag-patio-grouting","tag-porcelain-paving"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>Best Grout for Porcelain Slabs: Epoxy vs Cement Compared<\/title>\r\n<meta name=\"description\" content=\"Looking for the best grout for porcelain slabs? Compare epoxy and cement grout for outdoor paving, with durability, key pros, cons and tips.\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/nccstreetscape.co.uk\/Shop\/blog\/best-grout-for-porcelain-slabs\/\" \/>\r\n<meta property=\"og:locale\" content=\"en_US\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Best Grout for Porcelain Slabs: Epoxy vs Cement Compared\" \/>\r\n<meta property=\"og:description\" content=\"Looking for the best grout for porcelain slabs? Compare epoxy and cement grout for outdoor paving, with durability, key pros, cons and tips.\" \/>\r\n<meta property=\"og:url\" content=\"https:\/\/nccstreetscape.co.uk\/Shop\/blog\/best-grout-for-porcelain-slabs\/\" \/>\r\n<meta property=\"og:site_name\" content=\"NCC Streetscape\" \/>\r\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hashtag\/nccstreetscape\/\" \/>\r\n<meta property=\"article:published_time\" content=\"2026-07-24T14:39:40+00:00\" \/>\r\n<meta property=\"article:modified_time\" content=\"2026-07-24T14:40:44+00:00\" \/>\r\n<meta property=\"og:image\" content=\"https:\/\/nccstreetscape.co.uk\/Shop\/wp-content\/uploads\/2026\/07\/16-GftK-vdw-815plus-Completed-with-Garden-Furniture.webp\" \/>\r\n\t<meta property=\"og:image:width\" content=\"819\" \/>\r\n\t<meta property=\"og:image:height\" content=\"546\" \/>\r\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\r\n<meta name=\"author\" content=\"manager\" \/>\r\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\r\n<meta name=\"twitter:creator\" content=\"@NCCSTREETSCAPE\" \/>\r\n<meta name=\"twitter:site\" content=\"@NCCSTREETSCAPE\" \/>\r\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"manager\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\r\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"Article\",\"BlogPosting\"],\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/\"},\"author\":{\"name\":\"manager\",\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/#\\\/schema\\\/person\\\/909955bbf69f91a2f9453f5e8e85da22\"},\"headline\":\"Best Grout for Porcelain Slabs: Epoxy vs Cement Compared\",\"datePublished\":\"2026-07-24T14:39:40+00:00\",\"dateModified\":\"2026-07-24T14:40:44+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/\"},\"wordCount\":1883,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/16-GftK-vdw-815plus-Completed-with-Garden-Furniture.webp\",\"keywords\":[\"epoxy grout\",\"GftK vdw\",\"patio grouting\",\"porcelain paving\"],\"articleSection\":[\"Grouting Guides\",\"Paving Grout Guides\",\"Paving Guides\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/\",\"url\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/\",\"name\":\"Best Grout for Porcelain Slabs: Epoxy vs Cement Compared\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/blog\\\/best-grout-for-porcelain-slabs\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/nccstreetscape.co.uk\\\/Shop\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/16-GftK-vdw-815plus-Completed-with-Garden-Furniture.webp\",\"datePublished\":\"2026-07-24T14:39:40+00:00\",\"dateModified\":\"2026-07-24T14:40:44+00:00\",\"description\":\"Looking for the best grout for porcelain slabs? 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