Pitched Felt Roof Construction

Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years.

Pitched felt roof construction.

Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Hi dan a couple of roofing questions. The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope. The product can be used as a waterproofing coating on asphalt fibre cement sheeting concrete and bituminous roofing membranes.

These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof. Apply a 19 inch strip of underlayment felt. Roofing felt prevents the deck from being exposed to the elements before or while the shingles are being applied. Builders argue its not a problem.

For roof slopes from two units vertical in 12 units horizontal 2 12 up to four units vertical in 12 units horizontal 4 12 underlayment shall be two layers applied in the following manner. Because your roof deck might not lie perfectly straight or flat a layer of roof paper gives an even uniform surface upon which you can install your shingles. It improves look and uniformity. For every 12 horizontal feet the roof changes 8 feet in vertical height.

The pitch of a roof is nothing more than a ratio that indicates how much rise there is in the roof over a 12 unit horizontal distance. Ikopro solvent free water proofer is an easy to use bitumen based emulsion for roofs. The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process. It is often compared to slope but is not exactly the same.

4101 1 15 01 roof assemblies and rooftop structures. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. Roof pitch in layman s language simply refers to the steepness of the roof. Installing the roofing felt does take care but can go very quickly.

When a reference is made within this rule to a federal statutory provision an industry consensus standard or any other technical publication the specific date and title of the publication as well as the name and address of the promulgating agency are listed in rule 4101 1 35 01 of the administrative code. How to calculate pitch. For every 12 horizontal feet the roof changes 5 feet in vertical height. Maximum ultimate design wind speed v ult 140 mph.

1 we often see roof felt stopped short of the eaves.