How To Measure For Roll Roofing

Typically you re going to find the roll roofing in rolls that are 36in wide and include 100 square feet of material.

How to measure for roll roofing.

In order to know the appropriate amount of roofing felt to use the roof pitch will need to be calculated first. If you re determined to tackle a roofing job yourself it will be important to calculate the exact square footage of your roof in order to know how much material you ll need. Whether you re a contractor looking to train a new employee or a homeowner looking to do some renovations you ll find this guide helpful for any roofing project. What is roll roofing.

Getting accurate roof measurements can be difficult but with this roofing calculator you ll be well prepared to take measurements of any roof. Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage. Do not use the eaves as a guide instead because they can be uneven. How to measure a roof.

To accurately calculate the area of your roof you must first determine its slope or pitch. Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30. Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere. After taking a few simple measurements you can figure out the area of your roof by sketching a rough diagram and breaking the roof up into smaller sections which you can then add together to get your square footage.

Roof pitches are described in terms of rise and run. The average roll of 15 pound roofing felt covers about 400 ft 2 or 4 squares while the average roll of 30 pound roofing felt covers about 200 ft 2 or 2 squares. The run is the distance from the outside edge of a perimeter stud wall to the center of the house. Roll roofing is an affordable and lightweight roofing material that comes in a huge roll.

If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. Roofing felt is sold by the roll. The rise is the distance from the top of a stud wall to the peak of. Find the square footage of the roof.

Tips on measuring for roofing. Roofing felt also known as tar paper is a roll of felt coverage is often used when constructing a roof. It provides extra waterproofing to protect the wood until shingles are installed.