Warm roofs, the biggest mistake I see when doing a roof inspection.

loads of people are always contacting me saying how do I deal with this situation here I call it tucking in the roof okay you got to tuck it in you got to bring the insulation down and tuck it in just here to the next thermal element now this is a warm pitched roof it could be a flat roof you'd still have the rafters come right away across doesn't make any difference you've still got to bring the thermal element of this wall up to meet the thermal element of the roof which comes down and it there's all sorts of different ways you can do it people say to me you know what can we put in there you want to put in the best insulation you can because thermally this is going to be extremely efficient you want this to be efficient and this is already efficient so all the way up you've got efficiency you've got air tightness the amount of people show me photographs and they say why is my my house so cold and when I see and I look inside the roof and I look through I can put my hand through or I can see in their photographs and I could put my hand through and I Could Touch the the soet board on on the outside they have a lovely warm roof right up here but no one's bothered to join it up between here and here I I I talk to them I say look it's like going into and buying the best quilt that you can you can buy a 14 tog quilt to go on top of your bed you pull it on top of your bed you get in it but you don't tuck it around the outside if you don't tuck it around the outside you're going to get cold it's no good having 14 tog so a massive amount of insulation up here if you don't bring it down and seal it to the next element right the way around and of course one of the reasons it's not done is because this takes a lot of time if you look at what's going on just here um all of this foam costs money doing all of this costs money it also costs a lot of time to do it but when it's done it's fantastic now you know it might look messy at the moment but what you got to remember is that you've going to have plaster going up there you got plaster board going all the way along here and down you're not going to see that it doesn't matter what it looks like above this it doesn't get seen here's another thing that I try and focus people's minds on is that if you imagine that you've got a ceiling just here and this void is open inside there but it's shut you got an open void inside you can put your spotlights in here without a problem in fact theoretically if this is done correctly all the way around here why would you want a ceiling anyhow you you could set a smoke bomb off inside this room and theoretically none of that smoke can get up and out of any of this that's how well it needs to be sealed and of course again let me Focus your mind if this wasn't here and we filled this room up with smoke guess what and there was no ceiling guess what the smoke would go up there and it would go through there and it would go over the fa of boards and the gutter boards and the outside where it's basically outside the wind will blow it away the wind will blow the smoke away where it can blow it away it can blow back in no wonder people in warm rofs have spotlights and when I get there and I pull the spotlight out I go in there and I can go this is cold air up here here I can feel the air moving so you know this is something that is all the time it's one of the biggest things that I deal with on the internet 10 years ago I did a video I'll put a link for it up here or it'll be down down below and I pointed this out 10 years ago and in that 10 years I've done loads of roof inspections and and loads of people I mean I've got photographs of people sending me they're standing there and they're holding tissues underneath their light fittings and it's just blowing backward and forward totally inefficient if we're going to get this insul right on people's houses attention to detail is what it's all about now let me just leave you with a load of photographs and and different information which I'll talk over the top of just showing you the kind of things that I see when I'm out there this is the roof that I've just been showing you that I was standing inside look at the amount of foam that we've used to be able to do this and the amount of work and yes look look how wide it is we've really made sure that this one is well protected but lots of mess look at the amount of phone that we've had to use on this this is why it just doesn't get done people just not interested in doing this if if you got a roofing contractor in you really got to make sure that they're going to be doing this this is why I call it tucking in the roof all the way around making sure this has all been done this is this is an interesting one let me just stop this here so what we're doing here on on this particular one is we're going to turn this old roof into a new warm roof using the existing um felt as the um uh as the air Vapor control layer so we've just stripped this off and we're going to back fill all this with off cuts of insulation all the way therefore we're tucking it in um this is this will be totally airtight at this particular point so we can put the insulation Over the Top This is one from years and years ago again uh we be we're doing a a warm roof over the top of this and we're putting insulation we're tucking it in we're getting this ready so that when the insulation goes over the top you've got the thermal performance going right the way up and right the way over the top now this is one this is a a customer sent me this um now you would just hope that they're going to put insulation in between each one of these because you've got the warm roof over the top but I mean looking at what's going on there's no vapor barrier in this nothing's being foamed no joints in it whatsoever so I I doubt very very much that this is going to be done properly and you can just I I know in a few years time I'm going to go there and you you you'll take out Spotlight inside and you'll just feel you know there's a wind there there's a draft just going right the way through it this is an interesting one because this is a warm roof we're just seeing the insulation just there uh we're seeing two still sticking out and the facial board was right away across the front of this one now look you can look into the ceiling inside so you know this has been here this this roof had been there for about 15 years and had leaked no Vapor Barrier had been put on and none of this had been filled it hadn't been tucked down so what benefit over the last 15 years did she actually get or the lady here look there there's a nice off cut there they they've cut the facial board off and you're looking straight inside that's a nogging there you're looking straight inside so so theoretically she really wasn't getting the benefit of her uh her her new warm roof at all on that particular one actually I think I was walking past this one just having a look but again look at look at what what's going on in this one so again we would hope that they would be insulating between all of these tucking it down they haven't done it yet but they also got no Vapor Barrier and no edge around the outside and looking at it they don't look like they've even got a uh uh a lower de on underneath it so um you know I I just can't really comment I just hope that they're going to finish off that properly this is a customer who sent me this I talked to him through different scenarios he phoned me about this beforehand and he said to me you know how do I do this and you you can see he's done a lovely job he's gone around and he's filled all his um uh joy in just there I say he's done he's done a really good job of that and this customer here from uh he was somewhere up north um he's gone around and he's put um some insul a in between there but internally when we turn around and have a look at this um after talking to me he's gone around and he's he's insulated it from the inside and we just flip around and have a look at that now so you can see again he's done a lovely job of that he's got that nice and tight you you'd like to see some foam around the edges of that anyhow hopefully this uh helps anybody out there this is what we call tucking in your roof making sure that all elements the warm roof above and the insulation between comes down and me the the thermal element of the wall speak soon

Channel: Steve Roofer

Views: 166,423

Keywords: tucking in a warm roof, tucking in a warm roof, warm roof build up, how to do a warm deck flat roof, warm roof installation, roof insulation, vapour barrier, warm roof construction, warm roof insulation, flat roof inspection, tucking in your roof, roof survey, flat roof, insulating a flat roof, flat roof construction, roof inspection insurance, how to install warm roof insulation, warm roof design, warm flat roof insulation, warm roof construction detail, roof inspection

Id: Lc2D5U4DJew

Length: 7min 34sec (454 seconds)

Published: Sun Feb 04 2024