Standard loft boarding are floorboards fixed directly to the floor joists which squashes insulation or requires the removal of layers. Squashing your insulation stops it from working! That’s a fact. It reduces its efficiency by up to 50% and this ultimately ends up costing you money because it increases your heat loss and therefore raises your energy bills.
Although some installers and joiners recommend standard boarding, mainly because is it cheaper and easier to install than raised flooring, it can have adverse effects on your property. In our years as approved loft Insulation installers we have had a lot of experience with lofts that have been boarded directly onto the joists and the problems that have arisen as a result especially if the insulation has been squashed into place. This drastically reduces the airflow within the loft space. As a result of this, condensation can build up and cause problems with damp. If your insulation gets damp it will stop working and the weight and water will cause damage to your ceiling beneath. If the wooden joists get damp… well needless to say it may cost thousands to repair the damage that damp can cause.
To avoid these problems we only install the Raised Floor Loft Boarding which allows the air flow from the eaves and throughout the loft and under the loft flooring so that problems with damp or condensation do not occur.