Roof Substrate Definition

A substrate is the surface upon which a roofing system is applied.

Roof substrate definition.

For the purpose of this article we will define the substrate board as the material that is placed upon the roof deck prior to the placement of thermal insulation. If these substrate panels are installed too close to each other they could push into each other as they expand from the heat resulting in buckling. Deck substrate a roof deck is a roofing material layer installed on top of the rafters and right under the insulating layers of underlayment. In construction a roof deck is also known as sheathing or substrate.

This causes the decking material to buckle or have gaps that can result in conditions that may require major roof repair. It acts as a base to which the metal roof material is attached securing the fasteners and clips used to hold the panel. There are a variety of steel substrates and coatings available in the marketplace and the wrong selection could result in disappointment and reduced service life. When shopping for metal roofing purchasers must be vigilant to ensure the substrate and coating on the metal panels they choose will match their long term performance expectations.

Green roof growing substrates are designed to have a mix of large and medium sized particles to create an open porous structure inside which smaller particles can fit. What causes roof substrate movement. An intentional depression around a roof drain or scupper that serves to promote drainage. It often is used in part to support vapor retarders and air barriers.

Choice roof contractors select particular conklin roofing systems for roof repairs and restoration projects depending on the substrate that currently exists on the commercial roof. The exposed portion of strip shingles defined by cutouts. There are many different types available including options for green roofs and fsc sustainably sourced and produced types. The primary function of a deck is to act as a unifying structural diaphragm by tying all the components of a roof together.

It can be the roof deck an insulation system or a complete preexisting roof system. The surface upon which the roofing or waterproofing membrane is applied e g in roofing the structural deck or insulation. Roof substrate movement is a condition where the substrate or roof deck in residential properties expands and contracts. As a key part of the metal roofing system the substrate or substructure which rests underneath the metal roof panels serves two main functions.

The substrate or decking material typically plywood or oriented strand board osb expand and contract when exposed to heat resulting in roof substrate movement. Fasteners and clips would be attached into the substructure.