Nowadays we have many of various alternatives to use in that case, so You should select the best one.
If You're living in separate house You need to insulate every wall
at start, cause possibly they're porous. You may do it from the inside or outside, last method is perfect in case of no vintage houses. You may select really fancy panels to cover external surfaces of house, it'll decorate it and insulate. When You're living in an apartMEN
t or very vintage building the only method to insulate the interior is within it. Fortunately now You can purchase modern materials which can protect every wall from loosing the heat, You'll have even two times smaller expenditures for heating because of that! But before You even begin to insulate the surface perhaps You consider to replace the windows for new types. Cause vintage, wooden windows are very porous and loosing a lot of warm air in time of winter. If owning an old house Yo'll probably need to refresh entire roof by exchanging the tiles for new one. Doesn't matter if You wish to protect each wall of only remove the windows You'll have to hire proper group
of workers to help You with renovation. Most of companies nowadays have official websites where You can find an offer.