How Much Felt For Shed Roof

One roofing square equals to 100 square feet.

How much felt for shed roof.

Easiest to use metric as shed felt normally comes in 8m or 10m rolls. The more protection that you need for the shed the heavier the felt needs to be when you install it. The process of felting a shed roof. Roofing felt is essential to ensure your outbuilding is ready for all weathers by providing a waterproof cover to the building s roof.

One square is equal to 100 square feet. Most suitable for a shed roof is 3 5k 4k or 4 5k the weight goes up per square metre of coverage so will the thickness. Normally for a shed roof i would use 3 5k on a small shed and 4k on larger sheds. The felt will be applied in strips with each.

Rolls of felt coverage for roofs is sold in rolls that are one square each. Ideal for an apex flat or pent roof shed felt and roofing membrane are durable and perfect for a newly built structure or to re cover existing roofing material. In most cases this will leave 400 square feet 37 m 2 of net coverage per 1 roll. However you must allow for overlaps on joints.

Calculate how many lengths of roof felt are needed. 1 for each side of the roof as well as a third section that will overlap the 2 side panels by about 30cm on each side and run along the top ridge of the shed. 15 pound and 30 pound felt. Purchase enough felt to cover your roof s area.

Convert the area from inches to feet prior to purchasing your felt. One roll of conventional 15 felt covers 432 square feet 40 1 m 2. Professional roofing felts not only come in different colours but different weights too which is another way of saying thickness. Remember too that you will need the felt to overhang each gable end and the eave of the shed by at least 50mm so you need to add this to your measurements.

For most sheds you ll need to cut 3 pieces of felt. Always double check with the roofing calculator to make sure that you have enough felt to cover the entire area of the roof.