Search results for query: spray foam insulation

Yes, that's why you shouldn't get that foam sprayed. I was talking about the roofs traditionally insulated. I thought you asked how those don't cause rot. Edit: just seen it wasn't you asking.

From the link “Installers often prey on vulnerable homeowners, and point to certification and “quality” badges to convince people that spray foam will benefit their property. Sadly, the exact opposite is the case. Owners may find their property difficult, or impossible to sell, may find that...

This is the 3rd advert (different suppliers) that I've seen this week. If anybody is wondering if it is a good idea ... no. Why? mortgage companies might refuse to lend blocks airflow, can cause wood to rot foam can warp timbers bloody nightmare to remove it it won't keep your house much...

If possible skip the liquid DPM. Instead a layer of 1000 gauge Visqueen DPM (available from any builder's merchants) would be far more effective, but it does mean lifting the timberwork to get it in. If all you intend to do is put down liquid DPM between the existing timbers, then what you will...

Thanks for that advice. I weren't going to take up the existing floor tho or relay a new one on top of the existing floor boards which I'm going to sand and varnish but I get the gist, Don't use spray foam on the underside. Would stapling SuperQuilt Multi-Layer Reflective Foil Insulation to the...

Don't do it! Spray insulation traps moisture and prevents the wood from breathing which can accellerate rot. By all means lift some boards and install tight-fitting PUR insulation (e,g, Cellotex, Kingspan, etc), but that may be difficult to do You could use a more traditional approach: empty...

...the floor boards and I have a decent sized crawl space to put some kind of insulation under there. I was thinking easiest would de just get under there and spray the underside of the floor boards with spray foam insulation. Would this work ? Seems obvious but nobody has mentioned it on here.

having done some research it looks like spray foam insulation could be a good solution - applied from beneath, so no need to lift the floor above, and will get into all the nooks and crannies.

Yeah, that's what I have done. Used brown plugs, 7mm masonry drill bit, put the screw in the washer, plug on the end of the screw (one hand turn) push in place, tap in with hammer, then screw in. With screws into external wall and skim out might get cold spots - there are plastic washers you can...

Our bathroom is a single story extension on the back of the house with an uninsulated roof. I'm currently rewiring the downlights and started thinking about insulation (it's freezing in the winter). I thought for a cheap and easy fix, spray a load of expanding foam up there, through the...

OK, thanks for the reply, I was hoping with the area being treated like a garage and not being heated then in an old fashioned way that a sealed barrier would give enough protection. Working on the barrier not being suitable and the fact I can't add any outside ventilation I will accept the...

Yes, I had it in my old house and never had an issue. Nowadays though, all I hear is horror stories..... If I were to consider it, I'd have to do a load of research. The limited research I've done leads me to believe spray foam could be a more modern and higher performing solution...

Hi, help please on protecting a newly built cold roof whilst trying to add insulation and under boarding. We have a newly built extension utility area to the side of our house. It is constructed with a cold flat roof with small pitched ends that have flat back parapet style to the mid flat...

https://www.diynot.com/diy/threads/spray-foam-insulation-in-a-loft.583432/

...insulation. The Residential Property Surveyors’ Association has issued guidance for its members to recommend the removal of spray foam insulation at every property they visit. In a statement with the Property Care Association, the RPSA says: “There may be as many as 250,000 homes with spray...

The expanding foam will not allow the wood to breath and will encourage rot. You won't know about any roof leaks until the rot is at roof replacement time. I wouldn't touch spray foam for roof insulation with a barge pole.

Wondering what everyone's thoughts are on the attached photo? I'm looking at doing up my loft space at some point and came across this spraying of expanding foam. I always thought best to use the foam sheets with a air gap between its back and the actual roof then board over but is this...

Worry about it when you are living up there. (y)

Thanks for the replies. I did forget to mention that we will at some point be extending into the loft so will have to do something at some point. Looks like it's a big no no for spray foam insulation then.

Spray foam is about the worst thing you could do to that roof. It won't let the wood breath and you won't know you've got a leak until the rot is so bad the whole roof needs replacing. Secondly, if you insulate the underside of the roof all you are doing is allowing heat to escape into the loft...