How To Insulate An Attic Loft

Lay a two by four on top temporarily compressing the insulation to a manageable.

How to insulate an attic loft. If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts. See how to calculate the desired width of loft roll insulation for appropriate width sizes. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Plasterboard is available with a wide variety of rigid insulation products bonded to it.

Start by installing temporary lighting such as clip lights and laying a few sturdy boards along the joists to create a walkway. Woodie s will show you how to insulate your attic. You can use insulating boards. Cut any larger width rolls 1140mm to the desired width dependent on your joist s spacing.

To cut blanket style insulation place the product over a piece of plywood with its paper or foil side down. But they don t give the same insulation value and you can t cut them with a pair of scissors. To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes. When insulating a loft the most practical solution is to place most of the insulation between the rafters with a smaller additional layer fixed to the underside of the rafters.

Attic insulation is installed in the floor of the attic so you ll need to do a few things to make the process straightforward. This all depends on the depth of joists as if you have deeper joists. If you re laying narrow pre cut rolls 370 380 or 570mm or encapsulated insulation jump to step 2. If there are electric cables in the loft try to leave.

Insulated plasterboard is useful for this purpose. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. This is the best way to save money and energy in your home. If you don t use the loft space and do not foresee using it or are unable to use it for any other reason then the cheapest option would be fibreglass insulation and to insulate the floor of the loft currently at the time of writing building regulations state that you need to install a minimum of 270mm overall thickness this is generally a layer of 100mm between the joists and then a cross layer of 170mm over the top.