Foam Roofing Goes On Top Of

It has a long lifespan if its been installed correctly which takes skill and special equipment for the project.

Foam roofing goes on top of.

Create an unvented roof putting foam on top of the sheathing. If small holes to the foam roof occur because of equipment or damage from people walking on it you can usually calk it to prevent it from spreading. It s a simple combination of materials that differs greatly from traditional roofing in terms of time and expertise. Put down roof felt.

Good non adhered roof underlayment made air tight with taped seams and air tight connections to the air control of adjacent assemblies. Most home and business owners opt for rigid foam on top of roof sheathing because it makes the most sense and it s an eco friendly solution. Put full sheets of 2 foam on top of the sheathing and felt tacked in place. While spf roofing is not the most known type of roofing material the technology has been around since the early 1960s for industrial commercial.

One of the most efficient and popular methods though is to install rigid foam insulation on top of roof sheathing. Spray foam roofing spf is an excellent choice for a flat roof because of its insulation properties and seamlessness. There are three options for an air control membrane installed on top of the roof sheathing these are listed relative to air control and temporary back up water control performance. After cleaning the existing roof the spf roof can be applied directly over asphalt shingles concrete metal and wood.

Make sure all seams are properly lapped. This process means that the foam can conform to all roof shapes and types even irregularly shaped roofs. The usual application of spray foam is to repair and re invigorate an existing roof by removing the saturated areas replacing with like materials and then spraying foam over top of the entire roof. A second recoat is generally necessary only 25 years after the roof s installation.

Spf roofs are installed by spraying a liquid on the existing roof and allowing it to expand into a foam. The foil insulation goes on top of the moisture barrier followed by the roof covering. My roofing is steel and is designed to be mounted on battens purlins. Recoating your foam roof will cost about 25 of the original cost.

It makes the most sense and preforms the best under most conditions. From what i ve learned here seal the seams of the osb roof sheathing with zip system tape to create an air tight barrier.