Search results for query: spray foam insulation

Yeah I’ve seen them on Amazon though seriously mixed reviews unless you go for the ‘pro’ ones which are nigh on the price of having an actual ‘pro’ come and do a full thermal survey…. So not sure which is best there. Yes, I meant exactly that…. As part of the air test Do you know if the actual...

If you mean an FLIR (infra red) camera, yes,. they are very handy for checking if there are gaps in insulation or missing pieces. I've read that they can sometimes be handy for finding leaks, who knows? On the last new build I did we had a surveyor out who went round with one and identified...

The spray foam is really bad news. Avoid! EPC's are often notoriously wrong, often nothing more than a guess.

I would strongly advise against spray foam to rafters. Every one of these jobs I've seen - mostly several years afterwards - has been a disaster. The problem with placing insulation at different points is that it can cause condensation issues within the layers. By far your best option here is...

I know that there are adverts about filling the gap between roof timbers with a spray foam but have no idea if it works and wonder about depriving the timber of air but I would really like to know about cutting some sort of foam to a size that allows air but provides insulation.

I asked for the roof to be spray foamed and was quoted by the company to do the whole roof, however when they came the guy said he has aimed the hun down the slope but can’t guarantee it will all be done well. He also said the fibre would need to be pulled out as it has to be sprayed onto the...

...use you want to make of the triangle inner Do strive to insulate that part of the slope between the yellow triangle and the spray foam insulation. There are techniques for getting insulation up into it (is it really 2.4m long? your house must be massive or your drawing scale really wacky) -...

I have attached a picture of what it is like. The yellow part is the area which I’m not sure what to do. As you can see from the other pictures I think I’d struggle to get 2400mm length of pir board on the sloping part to meet the spray foamed section. This is why I was only going to insulate...

The way spray foam is applied leads to it encapsulating the rafter timber on three sides, so any moisture from the upper surface, broken felt, nail holes etc is trapped in the timber and does not freely evaporate - leading to mould and timber rot. Rigid insulation board between timber is not so...

How did you go from recommending PIR/PUR (foam) that is foamed into place between rafters, to decrying use of spray foam between rafters?

...need too/ can't maintain ventilation to it. I would lay quilt to the ceiling (300mm) and PIR to the vertical wall - 100mm between and at least 25mm across the studs if you can. Have you read up on spray foam insulation, the horror stories, maintenance risk and implications if you come to sell?

Hi newbie here. Not sure if this is in the right section but, I do have some diy experience but I’m looking for some advice on insulating the roof of my house. Last year I had foam put in the loft which is shown by the red lines. Problem is the rest of the roof has no insulation as the foam...

Given that you are filling up to existing rockwool type insulation, I would lightly mist the insulation, apply making tape to protect the upvc and then spray in expanding foam. Once cured, cut back so that it is about 5mm below the surface. Then use a filler such as toupret tx110. The pound...

The paper backing and joints indicate that the board is plasterboard. If they all look the same, then that's OK. Is the orange thing a flue or heater duct? It does appear to be a foam coating rather than asbestos, and spray asbestos would not usually be used in domestic work. However if it is...

Masking over window frame and mist spray water, then fill with foam. When dry cut foam back tidy. Remove masking from frame. Pva dry surface all the around. Dot and dab plasterboard around to square up. Maybe more then one layer of board to build out. A sheet of 15mm board will do it all as I...

Do not ever get tempted by spray foam insulation.

Thanks, as you say, you've certainly brought some new ideas to the table. Albeit, rather expensive from a quick google..... I don't have a DHW cylinder at present. The house is a 3-bed detached, with 2 bathrooms, not massive. I currently have Heatmiser stats using RF without issue. I have...

Yep, as soon as I get a chance, I will investigate.

You need to get under the floor (if possible) or lift a board and have a look what you have, before deciding what to/not do. Spray foam is not the preferred option for insulating, due to increased ventilation/condensation issues if not properly applied.

I understand the issues in the loft. I know it's not very popular due to condensation and rotting timber, but I would have thought under the house would be okay, especially if air bricks were still aren't blocked and ventilation isn't an issue.