eandg Posted June 12, 2023 Share Posted June 12, 2023 47 minutes ago, Iceverge said: You'll need to seal them for the test. Either cap them or put a plastic bag over the top and seal with tape temporarily. You're unlightly to cause any damage IMO. Our airtightness test will be done after sheeting - not concerned in terms of pass/fail as we've been fairly meticulous (all windows compribanded, airtight membrane seal and then airtight taped from frame to membrane, grommets on all service penetrations etc) but hadn't thought about AAVs (or the soil vent pipe which goes to the atmosphere), which will be boxed in. Is there much of an issue not having these sealed off and/or how do you go about doing that after the fact? Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 12, 2023 Share Posted June 12, 2023 1 hour ago, eandg said: which will be boxed in These need to remain accessible? Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 12, 2023 Share Posted June 12, 2023 4 hours ago, Thorfun said: Qq on AAVs (maybe @Nickfromwales is best to answer?). Do I really need to remove them and cap the pipes for the Airtightness test? Aren’t they valves? so aren’t they closed until air is required? How do they behave when the internal air pressure of the house is reduced? Do they stay shut or open up as the air pressure in the pipe is higher than in the house once it’s depressurised? If it was my house, I'd cap everything and go to the nth degree to get the actual ACH of the fabric. What is the point in doing all of the work up to that point, if a slightly faulty / leaky valve then gives you a shite ACH score!?!?! 1 Link to comment Share on other sites More sharing options...
Thorfun Posted June 12, 2023 Author Share Posted June 12, 2023 17 minutes ago, Nickfromwales said: If it was my house, I'd cap everything and go to the nth degree to get the actual ACH of the fabric. What is the point in doing all of the work up to that point, if a slightly faulty / leaky valve then gives you a shite ACH score!?!?! yep. it's a very fair point thank you. consider it done! 1 Link to comment Share on other sites More sharing options...
eandg Posted June 12, 2023 Share Posted June 12, 2023 1 hour ago, Nickfromwales said: These need to remain accessible? They've not been boxed in yet but presumed they would be - plumber had previously said about access for rodding eyes and the like so we'll catch that when finishing sheeting this week. Cheers. 1 Link to comment Share on other sites More sharing options...
Thorfun Posted June 12, 2023 Author Share Posted June 12, 2023 1 hour ago, Nickfromwales said: These need to remain accessible? 18 minutes ago, eandg said: They've not been boxed in yet but presumed they would be - plumber had previously said about access for rodding eyes and the like so we'll catch that when finishing sheeting this week. Cheers. i think @Nickfromwales was talking about the AAVs needing to be accessible rather than the soil pipe? could this possibly be a crossed-wires situation? 1 Link to comment Share on other sites More sharing options...
eandg Posted June 12, 2023 Share Posted June 12, 2023 Just now, Thorfun said: i think @Nickfromwales was talking about the AAVs needing to be accessible rather than the soil pipe? could this possibly be a crossed-wires situation? I think he is - and it's a good reminder before we finishing sheeting not to box anything in that we need access to but can't get to. (Think AAVs are to be hidden in cupboards, rather than sheeted, anyway but shall confirm with the principal interior designer). 2 Link to comment Share on other sites More sharing options...
Nickfromwales Posted June 12, 2023 Share Posted June 12, 2023 56 minutes ago, Thorfun said: i think @Nickfromwales was talking about the AAVs needing to be accessible rather than the soil pipe? could this possibly be a crossed-wires situation? 53 minutes ago, eandg said: I think he is - and it's a good reminder before we finishing sheeting not to box anything in that we need access to but can't get to. (Think AAVs are to be hidden in cupboards, rather than sheeted, anyway but shall confirm with the principal interior designer). Cheer for the clarity. Rodding points not so much of a worry, and usually just a tick-box for BCO's. AAV's defo need access or locating strategically Good that you have that in hand already. Link to comment Share on other sites More sharing options...
Thorfun Posted June 14, 2023 Author Share Posted June 14, 2023 and the results are in.............. ........0.98ACH! i'm very happy and hit my target of 1ACH. could we have got it lower? maybe, but we calculated the internal volume at just over 1400m3 over 4 stories (basement, ground floor, first floor and loft) and it's got some interesting junctions between sections of the buildings so i think to get in below 1ACH is a job well done. 8 Link to comment Share on other sites More sharing options...
SteamyTea Posted June 14, 2023 Share Posted June 14, 2023 14 minutes ago, Thorfun said: .0.98ACH Well done. Will keep the pollen out and my fag smoke in. Be like a pub in the 90s. 1 Link to comment Share on other sites More sharing options...
Thorfun Posted June 14, 2023 Author Share Posted June 14, 2023 3 minutes ago, SteamyTea said: Well done. Will keep the pollen out and my fag smoke in. Be like a pub in the 90s. just without the sticky floors, unlike @pocster's place. 1 Link to comment Share on other sites More sharing options...
Jenki Posted June 14, 2023 Share Posted June 14, 2023 31 minutes ago, Thorfun said: and the results are in.............. ........0.98ACH! i'm very happy and hit my target of 1ACH. could we have got it lower? maybe, but we calculated the internal volume at just over 1400m3 over 4 stories (basement, ground floor, first floor and loft) and it's got some interesting junctions between sections of the buildings so i think to get in below 1ACH is a job well done. Great result, the place is huge, so good effort 👍 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted June 14, 2023 Share Posted June 14, 2023 18 minutes ago, Thorfun said: just without the sticky floors, unlike @pocster's place. Eeewwww Link to comment Share on other sites More sharing options...
saveasteading Posted June 14, 2023 Share Posted June 14, 2023 A bco once told me that air pressure tests for very large volumes ( esp high) are not accurate. I think that the fans just struggled to keep the space full or the air was buffeting around. That was in the first year of apt, so presumably resolved now. Link to comment Share on other sites More sharing options...
gravelrash Posted June 14, 2023 Share Posted June 14, 2023 2 minutes ago, saveasteading said: A bco once told me that air pressure tests for very large volumes ( esp high) are not accurate. I think that the fans just struggled to keep the space full or the air was buffeting around. That was in the first year of apt, so presumably resolved now. Why dont you just dump in his toilet and tell him its chocolate, lol...he was so happy with the result. 1 Link to comment Share on other sites More sharing options...
saveasteading Posted June 14, 2023 Share Posted June 14, 2023 I'm just saying in case it alters any real life designs. I'm not questioning the result but there is always more to learn. 1 is very good though, well done. Last time I supervised one they wanted the upper floors closed off by shutting doors. No suggestion of that with your multiple floors? 1 Link to comment Share on other sites More sharing options...
Thorfun Posted June 14, 2023 Author Share Posted June 14, 2023 11 minutes ago, saveasteading said: A bco once told me that air pressure tests for very large volumes ( esp high) are not accurate. I think that the fans just struggled to keep the space full or the air was buffeting around. That was in the first year of apt, so presumably resolved now. 7 minutes ago, gravelrash said: Why dont you just dump in his toilet and tell him its chocolate, lol...he was so happy with the result. still am happy despite what @saveasteading says. he did finish with 'presumably resolved now' so I'm sticking with that. the guy seemed to have the correct equipment and we could definitely feel a few areas where air was coming in that we resolved there and then. Link to comment Share on other sites More sharing options...
Pocster Posted June 14, 2023 Share Posted June 14, 2023 1 hour ago, Thorfun said: and the results are in.............. ........0.98ACH! i'm very happy and hit my target of 1ACH. could we have got it lower? maybe, but we calculated the internal volume at just over 1400m3 over 4 stories (basement, ground floor, first floor and loft) and it's got some interesting junctions between sections of the buildings so i think to get in below 1ACH is a job well done. I’m gonna beat that now ! 1 Link to comment Share on other sites More sharing options...
Thorfun Posted June 14, 2023 Author Share Posted June 14, 2023 Just now, saveasteading said: I'm just saying in case it alters any real life designs. I'm not questioning the result but there is always more to learn. 1 is very good though, well done. Last time I supervised one they wanted the upper floors closed off by shutting doors. No suggestion of that with your multiple floors? none at all. tbh, it would be impossible as we haven't got any doors! 🤣 2 Link to comment Share on other sites More sharing options...
Pocster Posted June 14, 2023 Share Posted June 14, 2023 Just now, Thorfun said: none at all. tbh, it would be impossible as we haven't got any doors! 🤣 I’ve got all my doors on - but when he’s not looking going to tape / foam fill them shut Link to comment Share on other sites More sharing options...
Thorfun Posted June 14, 2023 Author Share Posted June 14, 2023 Just now, pocster said: I’ve got all my doors on - but when he’s not looking going to tape / foam fill them shut with SWMBO still inside? Link to comment Share on other sites More sharing options...
Pocster Posted June 14, 2023 Share Posted June 14, 2023 20 minutes ago, Thorfun said: with SWMBO still inside? No ! She will create depression ( of air ) 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted June 14, 2023 Share Posted June 14, 2023 (edited) 6 hours ago, pocster said: I’m gonna beat that now ! Remember that you can beat an egg, but not a w.......elshman Not sure if it is better in shut up room. Edited June 14, 2023 by Nickfromwales I need no reason, as I am the Messiah. Link to comment Share on other sites More sharing options...
Pocster Posted June 14, 2023 Share Posted June 14, 2023 (edited) 5 hours ago, SteamyTea said: Remember that you can beat an egg, but not a w....... Not sure if it is better in shut up room. Bad language will not be tolerated ! Mods ! Edited June 14, 2023 by Nickfromwales See above. ;) 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted June 14, 2023 Share Posted June 14, 2023 1 minute ago, pocster said: Bad language will not be tolerated ! Mods ! Your ten k didn't do it then. 1 Link to comment Share on other sites More sharing options...
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