[quote author=woodsmith link=1127933872/0#5 date=1128068575]AK the gap is normally caused by the original builder using wet timber for the floor joists, they are often stored outside and get soaking wet even though they were originally kiln dried
(thats the joists not the builder
)
As the joist dries out it shrinks taking the whole floor down with it and creating the gap.
It usually blows half a gale underneath making the room impossible to heat.
If you want to remove the skirting, rather than fixing a moulding to the front, I would suggest you buy new skirting an inch or more wider than the existing, that way you will not have to re-decorate. Keith [/quote]Thanks for the reply and the explanation. I feel that I need to provide more information: The room was a garage before, the access was via an internal connecting door from inside the house, going down a steep (about 10 inch).
The floor was concret, when the work was done we made the garage part of the house by leveling the garage floor with the house floor by adding concrete. The floor is as I said a concret floor covered with a carpet.
The gap I can see is from the lower end of the skirting to the floor (about 1 inch), and than inside the wall, in a way that it looks like the wall is thinner in this area, (all around the room), the gap does not go lower than the floor but inside the wall.
My question is what materal would be the most suitable, and if I can use ordinary cement would I just feel the gap with it and than plaster or it is more complicated?
BTW, you are right, this room is a cold room.
AK