There are a number of ways to improve the insulation of timber floors that help maintain heat above the floor and buffer heat loss to below the floor. These include:
- Eliminate excess moist air in the sub-floor space;
- Limit excessive air movement below the floor. Some ventilation below suspended timber floors is however essential;
- Install insulation in some form between the floor joists;
- Lay carpet. This is further improved by the use of a good carpet underlay and
- Install a ceiling below suspended timber floors.
Floor insulation can take a number of forms.
- Insulation supported on wire mesh run over or fixed to the underside of floor joists.
- Insulation supported on a ceiling addition to the underside of the joists.
- Perforated foil insulation run over the floor joists prior to laying the flooring; and
- Folded foil insulation fixed between the joists.
Drawings of each of these arrangements can be found in the Details section of this site.