Can i use loft insulation under floorboards air conditioning and lighting consumes a considerable amount of energy in the home and the cost can be significant. Underfloor insulation can significantly reduce this energy usage and, as a result, lower household bills.
Most people understand the importance of insulating their walls and attics but floor insulation is often overlooked. It is a one-time investment that will help your home to be warmer, more comfortable and energy efficient.
There are different ways to insulate floors depending on the type of flooring in your home – concrete, timber or plasterboard. The most effective method is to put insulation on a concrete floor before laying a new flooring material. This prevents moisture getting into the wood and rotting it and also stops heat loss.
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It is possible to insulate suspended timber floors but this will require raising the floor and placing insulation between the joists. This can be done by either tying netting over the joists and filling it with cellulose or sand and fibre or by placing foil-faced foam insulation boards between the joists. This method will cause the floor to rise and you may need to adjust doors and staircases if this is not already in place.
In old houses with solid concrete floors, it is possible to install slabs of polystyrene insulation on the floor which will stop heat transfer and keep the room warm and comfortable. It’s worth remembering that this method will raise the floor level so it’s important to check that skirtings and radiators are properly sealed in order to avoid drafts.