Using H Clips Under Metal Roofing

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

Using h clips under metal roofing.

The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. It serves as a moisture barrier as well as a slip sheet. Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Continue adding panels until the roof is covered.

You may need to cut panels to fit angles using a circular saw with a metal saw blade. Once again this is used on cold roof construction. We are often asked if clips are engineered and the answer is. Metal roofing is also available in the form of shingles.

This type of underlayment is critical to a quality roof installation. Not always required but a good idea. Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes. What is referred to as an engineered clip is a clip specified for use in an engineered metal roofing system which is tested to follow the strict guidelines and industry standards just because a clip is used in engineering it still has to be installed per the manufacturer s recommendations.

Make sure the product is designed to be used under metal. For many applications a layer of plywood underneath your metal roofing is an unnecessary expense. It will help you to eliminate problems that may come when the house becomes extremely cold in the winter and terribly hot in the summer. H clips provide additional stiffness between bearing points for the unsupported edges of wood panel plywood or osb roof sheathing along with the necessary 1 8 gap for expansion as shown below illustrated on a bag of simpson h clips.

When hot roof construction is done a roof with no ventilation a breathable underlayment is recommended. Polyurethane spray foam metal roof insulation.