Underlayment For Slate Roofing

The underlayment roll is comfortable to sit on the roof floors and walls or anywhere you need it.

Underlayment for slate roofing.

Assist in fire resistance rating of a slate roof as class a. Item 169827 model 5003002. 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. Some key functions of a roof underlayment.

1 re felt with 2 layers of sbs 40 lb. Good surface for chalk lines when laying out the courses. Two different underlayment suggestions very confusing. Roof felt 2 nail 2 layers tu 35 or malarkey modified sheets.

The underlayment on a slate roof is often misunderstood. Regardless of what type of underlayment you settle on i hope that your slates will be installed on skip sheathing above the roofing underlayment. Protects the roof and building until the slate is installed. Cushions the slate when nailed into the roof deck.

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

Some believe that is is the most important part of the roof when in fact it s the least important.