My house is so cold despite having full central heating double glazing, cavity wall insulation and good loft insulation. I suspect the cold comes through our integral garage which has a large gap under the door how can we seal this up? Also the house is built on a hill and has a good 3foot underfloor suspension do we really need all this space for ventilation?

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Originally Posted by mymart

my house is so cold despite having full central heating double glazing, cavity wall insulation and good loft insulation. I suspect the cold comes through our integral garage which has a large gap under the door how can we seal this up? Also the house is built on a hill and has a good 3foot underfloor suspension do we really need all this space for ventilation?

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The gap for he door can be fixed by purchasing a new seal for it,a deeper seal,made by quite a few manufactures,here is Raynor doors,it is twice the thickness as a normal seal,OR,you could try raising the concrete,with a mortar pad<it would need some real professional prep work and sealing to last.

The 3 foot suspension?Is this a crawlspace? If so,insulation is more than a must,Ventilation is also a must.air must flow to keep the house from longterm moisture build up,just like a roof must be vented,so must a foundation,but a foundation just needs a little venting,not the whole 3 feet all the way around(and if you are diligent,you can block it off during the winter,as long as it is able to breath at least a little)

Hope this helps,
Ken