When applying the sealant, it is important to use the right tools and materials, such as a silicone gun or a sealing tool, to ensure that the sealant is distributed evenly and adheres properly to the surfaces of the joint. Tried to obtain Wide Gap Joint Fill unsuccessfully all over the country without success but Sealant Supplies came up trumps! Only issue once had is that if it’s not fully inserted it can come back out at some areas as it expands.

Reference must be made to limitations regarding dimensions and configuration described in the ETA 23/0088. Fantastic Company with just about possible colour Sealant you could ever want and a really wide range of products available.

I realise it’s intended purpose is for back filling before using a product like silicone but it’s also good for filling gaps such as between floorboards to reduce gaps.

setting the correct depth of sealant is a very important part of the sealant process if this is set incorrectly the joints may fail. In addition to backer rod, there are other tools and materials that can be used to achieve a perfect silicone joint, including silicone sealants, and tapes.I’ve also started to use spare parts of these foam strips for other DIY repair jobs where two part wood filled had to be supported from the inside of a half-rotten wooden door. Everbuild Tecnic Joint Backer Rod is a non-absorbent compressible grey closed cell polyethylene foam backup material. The ends of adjoining rods and at detailing locations such as corners must be in tight contact with each other to maintain maximum fire resistance. the sealant is pushed to the bond line with a spatula, ensuring wet-out of the sealant to the substrate.