How To Measure For Roll Roofing

Roll roofing is an affordable and lightweight roofing material that comes in a huge roll.

How to measure for roll roofing.

Roll out the underlay and tack it down making sure that it is flat and smooth not buckled or wrinkled anywhere. Roof pitches are described in terms of rise and run. It provides extra waterproofing to protect the wood until shingles are installed. To accurately calculate the area of your roof you must first determine its slope or pitch.

Roofing felt is sold by the roll. You may find other options for roofing but they come as shingles most of the time just one piece of material. Tips on measuring for roofing. Rolls of felt are 36 wide x 144 long for 15 and 72 long for 30.

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. The rise is the distance from the top of a stud wall to the peak of. Measure 35 inches up from the eaves at several intervals along the roof and mark them. 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.

Do not use the eaves as a guide instead because they can be uneven. Roofing felt also known as tar paper is a roll of felt coverage is often used when constructing a roof. In order to know the appropriate amount of roofing felt to use the roof pitch will need to be calculated first. Getting accurate roof measurements can be difficult but with this roofing calculator you ll be well prepared to take measurements of any roof.

If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof. Typically you re going to find the roll roofing in rolls that are 36in wide and include 100 square feet of material. Snap a chalk line as a guide for the first layer roofing. What is roll roofing.

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. 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. 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.