davejura Posted August 22, 2022 Share Posted August 22, 2022 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. Link to comment Share on other sites More sharing options...
nod Posted August 22, 2022 Share Posted August 22, 2022 Most foam isn’t airtight The blue stuff is the best for what you are doing Link to comment Share on other sites More sharing options...
Thorfun Posted August 22, 2022 Share Posted August 22, 2022 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 Link to comment Share on other sites More sharing options...
saveasteading Posted August 22, 2022 Share Posted August 22, 2022 We are getting the Everbuild Thermofoam, for which the spec reads much the same. Will report back after use. Link to comment Share on other sites More sharing options...
Simplysimon Posted August 22, 2022 Share Posted August 22, 2022 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 Link to comment Share on other sites More sharing options...
Gone West Posted August 23, 2022 Share Posted August 23, 2022 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 Link to comment Share on other sites More sharing options...
saveasteading Posted August 23, 2022 Share Posted August 23, 2022 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. Link to comment Share on other sites More sharing options...
Gone West Posted August 23, 2022 Share Posted August 23, 2022 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. 1 Link to comment Share on other sites More sharing options...
Radian Posted September 18, 2022 Share Posted September 18, 2022 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. Link to comment Share on other sites More sharing options...
nod Posted September 18, 2022 Share Posted September 18, 2022 No The air will travel right through most foam The blue foam is much better than most Link to comment Share on other sites More sharing options...
Onoff Posted September 18, 2022 Share Posted September 18, 2022 That Illbruck FM330 is streets ahead of anything else. 1 Link to comment Share on other sites More sharing options...
Radian Posted September 20, 2022 Share Posted September 20, 2022 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? 😝 Link to comment Share on other sites More sharing options...
Gone West Posted September 20, 2022 Share Posted September 20, 2022 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. 1 Link to comment Share on other sites More sharing options...
MortarThePoint Posted October 12, 2022 Share Posted October 12, 2022 (edited) 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, 2022 by MortarThePoint Link to comment Share on other sites More sharing options...
Onoff Posted October 12, 2022 Share Posted October 12, 2022 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. Link to comment Share on other sites More sharing options...
Pocster Posted October 12, 2022 Share Posted October 12, 2022 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 . Link to comment Share on other sites More sharing options...
Radian Posted October 12, 2022 Share Posted October 12, 2022 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... Link to comment Share on other sites More sharing options...
Onoff Posted October 12, 2022 Share Posted October 12, 2022 Have you unscrewed the adjuster at the back? Link to comment Share on other sites More sharing options...
Onoff Posted October 12, 2022 Share Posted October 12, 2022 1 hour ago, pocster said: I never clean my gun because I’m lazy . 'Nuff said. Link to comment Share on other sites More sharing options...
MortarThePoint Posted October 12, 2022 Share Posted October 12, 2022 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. Link to comment Share on other sites More sharing options...
MortarThePoint Posted October 12, 2022 Share Posted October 12, 2022 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. Link to comment Share on other sites More sharing options...
Onoff Posted October 12, 2022 Share Posted October 12, 2022 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..... 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 12, 2022 Share Posted October 12, 2022 Just now, Onoff said: Doing it for some reason I thought of @pocster..... You’ve never shaken me ! - but I am sloppy for sure . Link to comment Share on other sites More sharing options...
Onoff Posted October 12, 2022 Share Posted October 12, 2022 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... Link to comment Share on other sites More sharing options...
Pocster Posted October 12, 2022 Share Posted October 12, 2022 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 . Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now