Loft insulation - eaves

sigma

sigma

sigma

Caporegime
Joined
13 Nov 2006
Posts
31,017
Assuming it is required, had anyone fitted one of these:

www.nationalinsulationsupplies.com

ARC Retrofit Eaves Insulator | Addresses Heat Loss

Improves thermal efficiency by tackling heat loss at the eaves junction → Innovative wedge-shaped design with hinged ventilation tray ✓ Prevents condensation and mould
www.nationalinsulationsupplies.com www.nationalinsulationsupplies.com

If not, are there any other options for improving insulation that don't involve ripping up the ceiling?
 
Can you not access the loft to fit insulation?

Not had any experience with that product but i would be surprised if it is better than traditional insulation.
 
I don't have any answer, but that's an interesting product

With normal rock wool type stuff, the eaves get mostly ignored as 270mm or more there would mean blocking the ventilation.

And since topping up the insulation in the loft, I have noticed the edge on the ceiling below now being far more likely to become the dew point ("luckily" the windows are still worse!).

What I thought about but never did -mostly due to the access being awful - is to fill around 50mm of the 80mm or so of gap which is there with Phenolic boards (AFAIR about 10% better than normal PIR boards).

Obviously those do not come precut but then our roof timbers are not always exact with their distances.

It is possibly that such an approach might be better than that ready made product as the image in the OP still implies a gap over the wall, I think.
 
Just though of another thing: the image of product implies a preset roof angle of around 45⁰ whereas most roofs are all over the place with common ranges - for example - from 30⁰ to 45⁰ etc.

And if the roof is 30⁰ and this product is 45⁰, then it would have to be set even further back. That is, the image implies sitting on top of the inner wall but further away from the edge might not be any closer than the normal rock wool.
 
I looked at these trays, but just the plastic part not with the extra triangular insulation. My intention was just to push the mineral wool up to the tray.

I didn't bother in the end, too much money for a plastic tray to do the whole loft. I just laid the insulation up to the edge and left a few cm of the eaves free.
 
KompuKare said:
Just though of another thing: the image of product implies a preset roof angle of around 45⁰ whereas most roofs are all over the place with common ranges - for example - from 30⁰ to 45⁰ etc.

And if the roof is 30⁰ and this product is 45⁰, then it would have to be set even further back. That is, the image implies sitting on top of the inner wall but further away from the edge might not be any closer than the normal rock wool.
Click to expand...
Has hinge to make it adjustable.
 
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