Last week we discussed the basics of roof underlayment, so now we’d like to take a look at what’s UNDER that underlayment. At the base of every roof system is sheathing, also referred to as decking. This layer lies between the primary structural components of your home (the trusses and joints) and the weatherproofing materials of your roof system.
Because it’s the component that provides the main protection and insulation of a home, roof sheathing should only be installed by professional Richmond roofers. Here are some of the mistakes that have been made by inexperienced roofers:
- Improper fastening of sheathing, which can lead to collapse in high winds.
- Upside-down installation of sheathing.
- Installation that’s not perpendicular to roof rafters, as required.
- Panels that don’t meet in the center of the truss/rafter.
The most common types of sheathing material are plywood sheets and a wood product called oriented strand board (OSB). Both provide quick installation, while plywood sheathing offers a sturdy nailing base at a higher cost. Some manufacturers recommend plywood due to the fact that OSB will swell when exposed to rain or significant moisture.
Recycled paperboard, made from recycled newspapers, can also be used as roof decking. In addition to being very environmentally-friendly, paperboard also offers a greater insulative value than wood and can reduce noise. It is generally less expensive than wood-based sheathings.
For the best advice on which roof sheathing material to install in your BC roof, contact Crown Residential Roofing. We provide complete roof inspections and free estimates for roof replacement or roof repair in Richmond. Our professional and reliable services are only a phone call away!