House hot in summer, cold in winter

Mudd14

I wondered if anyone had any tips about the problem above, it seems that it would be an insulation problem and we do have a lot of large windows that probabily need replacing, theyr very old double glazing.

One thing that I notice is the loft temperature is very cold in winter and red hot in summer, this must be my main problem. The insultation isnt great in the roof prob around 170mm. Would spending money on another 200mm really make that much of a difference? B&Q have an offer on at the minute for £3 for a roll of 200mm insulation so thought i may be a good time, however money is tight and if it wouldnt make tthat much of a difference I would leave it.

Any advice would be appreciated.

Swipe

I have only half your problem: a cool house in summer and a cold house in winter. Mine has max loft insulation and cavity wall insulation too. I put it down to being a detached bungalow (quite exposed) with suspended wooden floors.

27col

If the loft is cold in the winter and warm in the summer that is exactly how you want it to be The loft space is normally uninsulated and thus will heat up in the summer and cool in the winter. The insulation in the floor of the loft is doing exactly what it is supposed to; ie keeping the warmth in the house and not letting it percolate into the loft and thus be wasted to the outside. 170mm is quite a good thickness but would benefit from upgrading to 240mm or whatever is the latest recommended depth. You certainly would be doing the right thing to put an extra 200mm in place.