How to Insulate Your Loft | ADVICE | Homebuilding

SPONSORED | How to Insulate your Loft with Stone Wool.
The Homebuilding & Renovating guide to insulating your attic space, in association with ROCKWOOL.

VIDEO TIMINGS BELOW

Homebuilding & Renovating have teamed up with ROCKWOOL to provide this step-by-step guide to insulating your loft. Starting with the benefits of insulation, the key features of the ROCKWOOL products, and then a beginning to end guide, talking through the process of laying the insulation.

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00.00 - 01.25: Why Insulate your Loft?
01.25 - 04.45: What Insulation Materials are Available?
04.45 - 06.52: Preparing Your Loft
06.52 - 07.41: Measuring Up
07.41 - 08.32: Tools for the Job
08.32 - 12.27: Fitting the Insulation

[lovol]

Thanks. Skip to 8:45 for the actual installation

[PlanetIscandar]

*Great video, one of the Best i ever saw!* I'm an absolute Rockwool fan (without Alu foil)!
My question: What do we do in the summertime, when the Loft is very hot? Don't we have to insulate the pitched roof as well, to prevent the overheating of the Loft? Because you wrote (comment) that we don't need to add insulation into the roof itself.

[beitziv]

Just off to buy some insulation so that guy doesn't kill me

[jackieconrad]

Thanks for a great video. I had a contractor come in on a government grant and they laid the insulation across timbers, long ways. They said that, that was the best way to stop drafts and the other way (the usual way) was incorrect. I now have condensation. I think i may go up and 1. Check the ventilation and 2. Turn it round.

[stuartjenner]

Are you supposed to leave a gap at the edges of the roof to allow air flow. Thanks

[philcorp]

Dissapointed thst you dont mention the air gap between insulation and boards

[numb]

Thanks but are the spotlight covers really needed? I thought they’d only be needed for halogens. I have the Philips hue spotlights which are LED, so shouldn’t give off heat, but they don’t give a description of the fire rating…

[andygaskell]

What about putting the insulation up to where the roof meets the loft floor is there any rules around that?

[Mpalmer]

Based on this video - for any sections I don’t want to board. Is it best to run the first 100mm parallel to the joists in the voids…then the 200mm ontop of that should run at a 90degree angle laid on top?

[DriftfishCo]

Great video, what do you recommend doing around the eaves to help maintain cross ventilation?

[graham]

Is it best to install a moisture barrier before laying blanket insulation?

[zbigniewkopek]

Great explained. I am only concerned if the cables and junction boxes should not be covered before putting insulation on? I have seen some kind of pvc protectors for cables. Do you think it would be good idea to use them or not necessary?

[NikolayBoyanov]

nice explanation video! I only have a question why you are not using vapour barrier under insulation ?

[thameswood]

Thank you for the video. My only question is our current insulation is 300mm but not boarded. We want to board it to use for storage. Our potential contractor keeps saying we can can lay the floor boards directly on the joists without suppressing the insulation and removing the excess of the insulation to cover the rest of attic side or something. It does not recommend using ‘joist legs’. Is this acceptable? Would you recommend joist legs or directly putting the boards on top of the joist? He says he want squash the insulation but cut it and put around the sides or something like that.

[weedfreer]

I have a ceiling which curves down to meet the wall behind which the soffit area is situated.

Where the vents are in the soffit, it appears we have a little black mould showing the other side visible from the bedroom.

As I'm dealing with woodworm and have cleared the loft out completely for spraying, I wondered, what's best when replacing the insulation?

Should I be looking at putting the insulation down into the soffit area or simply across the gap?

Also, as the void behind the ceiling will act as a cold spot and is likely to be a pretty major source of heat loss, should I be lookig at squirting a thin layer of foam down there to insulate the rear of the plasterboard?

[thelament]

Should I insulate the pitched roof? With Insulation board etc? and do i need a membrane of some sort? Basically, in my loft Im looking at the reverse of the slate.

[natwarlalkerai]

I'm doing loft insulation taking out the old and putting in new. I've got a hip roof at front of the house which caters for the bedroom bay window. Can I insulate the joists in the hip roof and add a top layer?

[lapinchiloca]

the lady is lovely :) but the bloke is over caffeinated

[nobodyimportant]

NOT really helpful as i want to actually USE my loft.