Everbuild Everflex AC95 Intumescent Sealant and Adhesive – Mould Resistant – Non-Flammable – Water-Based – Solvent-Free – White – 900ml

Excellent product, as caulk filler and for soundproofing qualities. Easier to work with than other decorators caulk. Easier to clean off too 👍The large tube makes for great value but ensure you have a suitable gun for it - it’s a much wider diameter so normal silicone guns won’t fit

Excellent for use in sealing plasterboard joins where acoustic blocking is required.Only negative issie was the packaging, having a pointed end each deliver had burst out of the packaging, one delivery contained out items which were lost. Also on both occasions the cardboard tube of some the AC95 tubes were damaged which caused the contents to pass behind the main plunger covering the application gun and wasting a fair amout of product, otherwise most excellent

Does exactly what it says on the tin. Can be a bit messy though and need to make sure you have a decent applicator gun as product is quite difficult to squeeze out.

Genuine product but both packs were damaged, making them almost unusable

Does exactly what it says it does. The two main properties of this sealant are acoustic and intumescent. This is ideal if you are applying sound proofing for example, particularly where you are sticking acoustic plaster board to the wall or some similar set up. In such case the acoustic plasterboard needs to be independent of the other walls and ceiling/floor, and you achieve this by leaving a small gap around the edge. This gap can be filled with this kind of sealant. I've also used it to plug gaps where sound gets through such as around the edge of plug sockets, or wide gaps in floor boards etc. Also around the edge of laminate flooring before the skirting board or scotia beading is placed over it. It's very very versatile.Intumescent simply means that this product is rated to withstand fire for a period of time. Instead of burning or giving off toxic fumes it will turn black and expand.Note: This is a large size. A much bigger size than the standard size sealant tubes you can buy, so you'll need a bigger gun to use it.

Product is easy (though messy) to use with the appropriate gun. Seems to do exactly the job required, filling gaps with a dense yet slightly flexible gunge. Have not tried overpainting but the texture of the surface suggests that it will be possible, as claimed.Unfortunately, delivery from Amazon left a lot to be desired. I ordered 3 tubes together and all were noticeably damaged at the base, meaning sealant leaked out of that end as quickly as it came out of the nozzle... which was obviously disastrously mucky. The replacement delivery organised by customer services also had 1 of the 3 damaged! A separate single tube I ordered earlier had been fine, leaving me with 3 of 7 total being ok. So while the product seems good, I can not recommend buying it from Amazon.

I had to buy a separate monster gun to make it work :-). But you get A LOT of stuff, and it's the best stuff.

Arrived promptly and well packaged but not excessively so.Easy to use - make sure you have a large caulking gun - filled floorboard gaps ahead of soundproofing. Added bonus of helping to seal against drafts very happy with this product.