Loft Insulation ?

fanatiq

i have just bought a house, the loft insulation was installed in 2002, using crown wool and is 270mm

does this have a life span, would replacing it help heat ?

my house is warm downstairs but there is slight fall in temp upstairs, which im unable to figure out. ive just had new double glazing and gas heating installed.

macman

It's normal to be cooler upstairs, as bedrooms do not need to be as warm as living areas, if the installer has set the rad valves up properly.
Loft insulation does not wear out, as long as you have sufficient depth it should be OK.

matelodave

There's no benefit in replacing it but there's nothing to stop you putting more on top to improve what you've already got. AFAIK 270mm is the recommendation nowadays but you will be into the laws of diminishing returns so spending a lot probably won't give you any significant benefit.
If 100mm reduces your heat loss by 50%, the next 100mm will reduce your reduced heatloss by 50% and the next 100mm will do the same so doubling the cost just reduces the benefit 50% so unless you can get more insulation very cheaply it really isn't worth spending loads of money.
Cavity wall insulation may be worth considering as will draught proofing. making sure that the heating controls are set correctly will also help

Cardew

fanatiq wrote: »

my house is warm downstairs but there is slight fall in temp upstairs, which im unable to figure out. ive just had new double glazing and gas heating installed.

As indicated above, it is normal to have radiators sized and the systems balanced so the temperature in bedrooms(not bathrooms) is slightly lower than reception rooms. e.g. if the temperature in a reception room is, say, 20C the bedrooms could be at 18C.

Butti

If you want it warmer upstairs as someone has said, check the windows for draughts and maybe fit thicker curtains.

macman

Or turn up the TRV's which the installer should have fitted to the upstairs rads?