No 15 felt and no.
Use roof felt for garden underlayment.
Also known as tar paper roofing felt originated in finland in the 1870 s as a waterproofing underlayment for roofs.
Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.
For decades roofers have fitted a layer of felt over a roof s sheathing or roof deck before installing shingles.
Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.
Later asphalt was used in the manufacture of roofing felt.
Wind driven rain or snow can trap water under your shingles putting your roof deck and inner residence at risk of moisture.
Today glass fiber or polyester fabric may be used instead of paper.
Why use roofing felt paper.
Long ago a 15 role actually weighed 15 pounds but over the years that has changed.
Still felt is an effective underlayment and sometimes might be the better choice for a project.
Tack it in place at the corner with the end flush with the end of the roof and the bottom edge of the roll right along the bottom of the roof.
Before applying roofing you ll need to cover the sheathing with roofing felt also often called tar paper most local codes call for using 30 pound felt.
Felt roofing underlayment is typically available in two types.
For hundreds of years felt was the go to material to use for roofing underlayment.
It was only within the last twenty years that synthetic underlayment was introduced as an improved product that would not have the shortcomings of felt.
What is roofing felt.
Roofing felt offers an additional layer of protection against the elements.
What is synthetic underlayment.
Any professional can measure and nail it all over the surface within a few hours.
It provides backup protection in the event of ice or water damage.
To attach roof felt on a shed start by calculating the area of your roof and buying enough felt to cover it.
The main advantage of using felt roofing underlayment is cost.
30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.
Of course it is a bit more technical than that but this is the basic idea behind how felt works.
The underlayment roll is comfortable to sit on the roof floors and walls or anywhere you need it.
Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive.
The underlayment also has a slip proof polymer to the bottom.
Also the textured fabric lets steep sloppy walkability.
In northern climates ice or snow dams are another common.
