Underlayment For Slate Roofing

The underlayment also has a slip proof polymer to the bottom.

Underlayment for slate roofing.

1 re felt with 2 layers of sbs 40 lb. The underlayment on a slate roof is often misunderstood. Also the textured fabric lets steep sloppy walkability. Protects the roof and building until the slate is installed.

Some key functions of a roof underlayment. Any professional can measure and nail it all over the surface within a few hours. Two different underlayment suggestions very confusing. I have two roof estimates for underlayment replacement of the entire tile roof which at this time has the builder s original paper from 1989 when i purchased the house new.

First layer of waterproofing and will provide extra protection for leaks should slates become damaged missing over time or poor installation. Some should not be left exposed longer than 30. Assist in fire resistance rating of a slate roof as class a. For example if your slates are being installed with an exposure of 6 inches and you are installing 1x4 skip sheathing with a width of 3 5 inches then you ll have a gap of 2 5 inches between each course of sheathing.

Grace ice water shield 36 in x 75 ft 200 sq ft rubber roof underlayment. Cushions the slate when nailed into the roof deck. Some believe that is is the most important part of the roof when in fact it s the least important. Regardless of what type of underlayment you settle on i hope that your slates will be installed on skip sheathing above the roofing underlayment.

Roof felt 2 nail 2 layers tu 35 or malarkey modified sheets.