August 22, 20224 yr Any recommendations for sealing round doors / windows plus filling gaps in insulation? Was just thinking Everbuild fix and fill unless anyone has any better ideas, without breaking the bank! Thanks.
August 22, 20224 yr https://www.ebay.co.uk/itm/333714806299 can't get much better than this stuff. £8.75 a can from this seller on eBay is where I got mine.
August 22, 20224 yr We are getting the Everbuild Thermofoam, for which the spec reads much the same. Will report back after use.
August 22, 20224 yr 1 hour ago, Thorfun said: https://www.ebay.co.uk/itm/333714806299 can't get much better than this stuff. £8.75 a can from this seller on eBay is where I got mine. +1, gun stays clean as well
August 23, 20224 yr I used Soudal foam, along with Compriband, for sealing around my windows and doors. Didn't use any tapes and got 0.47 ACH airtightness. https://www.sealantsandtoolsdirect.co.uk/soudal-soudafoam-window-door-sws-airtight-acoustic-gun-grade-expanding-foam-12-box
August 23, 20224 yr 4 hours ago, Gone West said: Soudal foam, along with Compriband, for sealing around my windows What thickness of Compriband? We have a couple of stone arches, soon to receive glazing, which are no longer symmetrical, and so I want enough flexible sealer to accommodate any slight joggling of the stones. Assuming your windows are not in this situation, but suggestions welcomed.
August 23, 20224 yr 22 minutes ago, saveasteading said: What thickness of Compriband? Not like your windows, but IIRC I used two strips of Compriband, which fitted into grooves in the side of the window frame, which were 15mm wide and 10/18 expansion. I then used the Soudal foam to seal up to the Compriband tape inside and outside. The advantage of the Soudal foam was that it was very flexible after it had set. In your situation I guess you could use a wide strip of Compriband, with appropriate expansion, to seal the glass to the stone and then use burnt sand mastic to point the glazing.
September 18, 20224 yr On 22/08/2022 at 18:58, nod said: Most foam isn’t airtight The blue stuff is the best for what you are doing When I read about foams that aren't airtight, am I right in thinking that it's solely due to the rigidity of the foam once cured i.e. any movement between filled surfaces will reveal a crack through which air will move? All the foams I've used appear to be "closed cell" so could hold a pressure differential. Just asking because reading this thread reminded me of my thoughts on the matter.
September 18, 20224 yr No The air will travel right through most foam The blue foam is much better than most
September 20, 20224 yr On 18/09/2022 at 19:44, nod said: No The air will travel right through most foam The blue foam is much better than most That's a bit unexpected, I wouldn't want to be sprayed all over with cheapo foam but you've saying at least I could still breathe? 😝
September 20, 20224 yr On 18/09/2022 at 19:44, nod said: The air will travel right through most foam One of the selling points of Icynene foam is it's airtightness. We didn't use any airtightness membranes or tapes in our TF house. We relied on the OSB3 racking board and the Icynene for our airtightness which came out at 0.47ACH.
October 12, 20224 yr On 18/09/2022 at 20:21, Onoff said: That Illbruck FM330 is streets ahead of anything else. I've bought some of this and am unable to spray it with my normal foam guns. One is an Everbuild P65 and the other is a no-name Amazon foam gun. Do you need a special gun (e.g. from Illbruck) or do I have a duff batch of foam (still well in date code). Edited October 12, 20224 yr by MortarThePoint
October 12, 20224 yr 1 hour ago, MortarThePoint said: I've bought some of this and am unable to spray it with my normal foam guns. One is an Everbuild P65 and the other is a no-name Amazon foam gun. Do you need a special gun (e.g. from Illbruck) or do I have a duff batch of foam (still well in date code). Standard SF/TS gun here, works a treat.
October 12, 20224 yr 27 minutes ago, Onoff said: Standard SF/TS gun here, works a treat. I find some guns better than others . I never clean the gun because I’m lazy . For some brands I can use 5/6 canisters of foam before the gun is knackered .
October 12, 20224 yr 2 hours ago, MortarThePoint said: I've bought some of this and am unable to spray it with my normal foam guns. One is an Everbuild P65 and the other is a no-name Amazon foam gun. Do you need a special gun (e.g. from Illbruck) or do I have a duff batch of foam (still well in date code). What exactly do you mean when you say you're unable to spray it? If it screws onto the base of the gun and nothing comes out when you pull the trigger then perhaps the gun just needs cleaning? I'm sure you mean something else...
October 12, 20224 yr 50 minutes ago, Radian said: What exactly do you mean when you say you're unable to spray it? If it screws onto the base of the gun and nothing comes out when you pull the trigger then perhaps the gun just needs cleaning? I'm sure you mean something else... One gun is brand new. Both sprayed cleaner ok. 41 minutes ago, Onoff said: Have you unscrewed the adjuster at the back? Yes, unscrewed until it fell out.
October 12, 20224 yr Do new cannisters of FM330 normally make a slopping sound when shaken. These don't but I presume that's because they are completely full. I did manage to get a trickle of FM330 out of the older gun.
October 12, 20224 yr 11 minutes ago, MortarThePoint said: Do new cannisters of FM330 normally make a slopping sound when shaken. These don't but I presume that's because they are completely full. I did manage to get a trickle of FM330 out of the older gun. Yep. I've just gone and shaken two cans of FM330 and a can of Soudal Low Expansion foam. All 3 dated 12/2023. They all are unopened, so full and all make a slopping sound. Doing it for some reason I thought of @pocster.....
October 12, 20224 yr Just now, Onoff said: Doing it for some reason I thought of @pocster..... You’ve never shaken me ! - but I am sloppy for sure .
October 12, 20224 yr 1 minute ago, pocster said: You’ve never shaken me ! - but I am sloppy for sure . It was more I couldn't get my hands around the can...
October 12, 20224 yr 6 minutes ago, Onoff said: It was more I couldn't get my hands around the can... You can grab my can . Shake it violently then watch it erupt .
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