GftK vdw 840+ Paving Joint Mortar is our ‘best of the rest’ in a 1-part / 1-component, Polymeric Sand ‘ready-to-use’ technology based product that is probably best described as the ‘Entry level’ for fast and easy DIY paving jointing. When compared with all of the Polymeric Sand (air-drying), 1-component joint compounds on the market, GftK vdw 840+ stands out due to its higher strengths and better strength correlation, plus its unique moisture tolerance that allows the better and more efficient option of “wet” slurry application and ease of compaction into the joints. GftK vdw 840+ also has greater retention of these strengths and other performance characteristics.
Characteristics / Advantages – For pedestrian areas only
- Supplied ready-to-use
- No mixing or power tools necessary
- Easy wet slurry application
- Can be applied in light rain
- Suitable for narrow joints from 3mm to 20mm
Paving surfaces remain almost free from residual binder, any that does remain will disappear with weathering GftK vdw 840+ paving grout mortar is a 1-component, ready-to use, patio pointing product that is primarily designed for easy DIY use. This pointing mortar is suitable for pedestrian only areas such as patios, pathways and terraces with natural stone, reconstituted stone and concrete paving elements.
GftK vdw 840+ is the most advanced single pack jointing / grouting mortar on the market and is based on the latest and most advanced polymeric sand pointing formulation and highest polymer content available. As with all ‘polymeric sand’ pointing products, the material consists of a fine sand blended at high speed with an aqueous vinyl acrylic polymer, supplied ready to use, vacuum sealed and packed into a plastic bag within a plastic tub. To apply the bag is cut and poured directly onto the pre-wetted paved surface in small piles, where it is spread and compacted into the joints with more water. The water in the product evaporates leaving the dried polymer in place binding the sand particles together in the joints. GftK vdw 840+ has a unique formulation and is a major advance in polymeric sand based paving joint mortars for DIY domestic patios and paving.
GftK vdw 840+ is designed for use on all types of stone and concrete paving and in joints from >3mm to a maximum 20mm wide, plus it is not only tolerant of damp surfaces and conditions during application, but it is also wet-slurry applied onto thoroughly pre-dampened paving, thoroughly soaked and kept this way during the application. It is therefore extremely tolerant of the British Weather – No more waiting for a sunny day and good weather forecast to do the pointing and complete the patio – though as with any polymeric sand mortar is does required good dry weather to finally harden as this primarily occurs through water evaporation.
To install the vdw 840+ you simply open the protective tub, take out the bag, cut it with a knife and pour out onto the surface in small piles, then with more water from a hose, wet-slurry apply using a rubber squeegee (also available in the tools section of this website shop), moving it across the surfaces and directly into the joints; clear the surfaces with the squeegee and then after a few minutes settling and drying, rinse off any excess mortar with a little more clean water. After a further few minutes, brush off any final residue from the paving surfaces – Job Done – Easy-peasy!
GftK vdw 840+ is suitable for grouting all types of patio paving including those with natural stone (granite, limestone, sandstone, slate etc.), reconstituted stone and other concrete pavers or flags etc. However, vdw 840+ is not designed for areas used by vehicles or commercial / public areas with pressure jet wash cleaning, or any mechanical cleaning machines – for these areas please use our epoxy resin bound paving joint mortars GftK vdw 800, vdw 815+, or vdw 850+ According to the specific paving design, usage and loading requirements.
