It is thicker and heavier than the alternative 15 so if water ever gets under your shingles it has to work extra hard to get through the felt.
Roof tar paper 15 vs 30.
The difference between 15 lb and 30 lb roofing felt paper historically roofing felt paper was named for weight.
Besides that benefit if shingles come loose during a storm and tear off the 30 pound roofing felt stays intact whereas 15 pound tar paper may not.
Tar paper comes in two different weights or thicknesses.
Felt paper is commonly produced with a certain number of recycled products and coated with asphalt.
15 is easy to rip underfoot when installing the new roof system and ripped felt paper is useless regardless of weight.
Felt is commonly sold in either 15 or 30 rolls measuring 36 inches wide.
Roofing felt comes in large rolls and installs in horizontal rows starting at the lower edge of the roof with each subsequent row overlapping the previous one.
Roofing felt typically comes in 36 inch wide rolls.
This weight of tar paper may tear and tends to create holes around the roofing nails.
This means that 100 square feet of the felt weighs 15 pounds.
Organic dry felt is made from 100 post consumer recycled material.
Felt paper and synthetic.
It was easy to use durable and even had alignment lines to help with the shingle installation.
The lowest thickness is 15 pound felt.
The actual weight per square foot these days is actually less than the label says but the 15 pound.
Roll saturated felt underlayment 15 astm 4869 type i is an authentic asphalt 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product.
Because it s thicker and stronger.
Felt paper also referred to as tar paper was the standard underlayment material in roofing for decades.
Generally speaking roofing felt is a felt paper that is soaked in asphalt and other water resistant compounds to produce a membrane.
In our industry there are two main varieties of underlayment.
Organic dry felt is made from 100 post consumer recycled material.
What is roofing felt.
Those numbers are a reference to how much 100 square feet of the paper used to weigh back in the early days of its use.
15 lb felt paper weighed 15 pounds per 100 sq.
This offers your home protection until you can.
15 astm 4869 type i is an authentic 15 astm 4869 type i is an authentic asphalt saturated organic felt underlayment is used as a breathable secondary weather resistant barrier when applied over the roof deck prior to the installation of the primary roofing product.
