We cant tell you which interior window trim is best for ... It also adds another layer of protection to the insulation around ...

Typical 3.5-inch-thick wall ... storm-window effect and create a loosely sealed interior air gap by simply shutting curtains or shades. But the total thermal protection still hovers around R ...

Often-criticised by construction engineers as inadequate, interior ... recesses under the windows were filled to level out the walls, while the soffits were given a 6cm coating of insulating plaster, ...