It also contains insulation derived from a mineral mined from sea water, "natural" grout and wood finishes made from linseed oil, citrus peel oil, juniper berries and rosemary.

Furthermore, it would be anticipated that there is greater per unit potential for energy savings in existing housing, given many homes built prior to the promulgation of energy codes that therefore contain relatively less insulation than newer homes.

"The panels contain horizontal shiplap siding, windows, doors, insulation and internal vapor barrier," said Edward Lyons, the American architect who has done residential designing for Skanska for four years.

In both structures the cavity in the walls between the inner and outer leaves contains insulation in the form of glass fibre or polystyrene.

The partitions contain sound insulation and thermal insulation to the level required for inclusion of projects in the Electricity Board's Civic Shield Award Scheme.

In attics containing insulation between the floor joists, the facing should not be visible.

Hollow doors should be replaced by solid wood doors, or better still, by wood or metal doors containing insulation.

There are no standards defining the quality required for each resolution, but higher-quality cables typically contain coaxial wiring and insulation which make them thicker.

Fill the cavity containing the pipes completely - especially between the pipes and the outside wall - using ordinary fiberglass insulation.