Installing A Metal Roof Underlayment

The roof is an important element of the building envelope.

Installing a metal roof underlayment.

It provides a solid flat surface to attach the new metal roof to it creates an air gap between the back of the metal and the shingle roof which allows for airflow. For architectural metal roof panel systems a roof underlayment is required to help control water leakage through the roofing system during heavy rain storms or under snow melting conditions. The roof should also be completely free of grease water and moisture to ensure a proper bond. It starts with installing solid decking usually plywood or oriented.

Hence they do not typically include roof underlayment since the installation lacks a continuous substrate or deck to support the underlayment material. While there are no special tools needed for installing metal underlayments keeping the following equipment on hand can help streamline installation. Place the first screw. First two underlayment layers.

Structural metal roof panel systems are designed to span structural supports without requiring a structural deck. Installing a roof is much more than just nailing shingles onto some boards. How to install felt underlayment for a new roof. Install the roofing screws vertically along each rib in the panel.

Create a safe work environment with this metal roof underlayment with its leading edge 4 layer construction. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. Install underlayment a minimum of 6 inches up roof protrusions or vertical abutments. When underlayment is to be covered immediately with battens it can be secured with a minimum of fasteners to hold it in place while the battens are installed.

A building envelope is. What types of underlayment are available for metal roofing and which is the best choice for your design or installation. Installing the metal roofing over 1x4 s allows the ability to also install additional insulation under the metal roof. Installing the correct underlayments for your metal roof project the right stuff taking care of your building envelope.

Knife for cutting tape measure heavy broom or roller and rags. On most projects there are two types of underlayments. Seal with adhesive sealant or tape as described in section 6. Be sure the larger edge is laid so that the small edge of the next panel will overlap it.

Install final flashing material.