How should insulation quilts be laid?
Loft insulation quilts should be laid horizontally between the joists and reach the top of the joist. Typically, this will make the insulation around 100mm to 150mm deep. More layers should then be added at right angles, to close up any gaps between the joist and the quilt, and to bring the depth to the recommended 270mm. Important things to remember • Try not to squash down the insulation material. This makes insulation less effective. • Make sure you don’t block any air vents, which are there to help prevent condensation. You may need more of them if condensation is a possible problem; a professional can tell you about different ventilation methods like soffit, tile or ridge vents. • All electric wires, cables and light fittings must be kept visible to avoid overheating. If you are in doubt, it may be best to contact an installer. • Always wear a protective mask and gloves when working with mineral wool insulation.
