Forgefix Loft Legs (12 Pack) With these Forgefix Loft Legs (12 Pack) they help by raising the loft floor by 175mm for a more energy efficient loft storage which stops compression within the insulation ensuring the U-values are maintained. This product is extremely strong and lightweight with a very easy installation.  Additional Information They are screwed directly to the ceiling joists. Loft boards (tongue and groove loft panels or 18mm chipboard sheets) are then screwed on top of the Loft Legs to create a raised platform above the level of insulation. Squashing or compressing insulation reduces its effectiveness by over 50%. Homeowners have traditionally had to make a choice with their lofts, full insulation OR usable storage space, the Loft Leg allows for both. They are manufactured in the UK from recycled materials. Supplied as a box of 12.