What Thickness Plywood Should Be Used for Roof Decking?

Building codes allow different roof decking thicknesses depending on the spacing of rafters or trusses.

Homes with rafters spaced sixteen inches apart may allow thinner panels such as half inch plywood. However many modern homes use roof framing spaced twenty four inches apart, which requires thicker structural panels.

Because of these factors many roofing professionals prefer to install five eighth inch plywood even when thinner materials may technically meet minimum code requirements.

One of the most important steps during roof replacement is inspecting the roof decking after the old shingles are removed. Removing the old roofing materials allows the contractor to examine the plywood for signs of water damage, rot, or structural weakness.

If damaged decking is discovered it should be replaced before the new roofing system is installed. This ensures the new shingles are attached to solid wood and helps prevent future roofing problems.

A properly installed roof does more than simply replace old shingles. Professional roofing contractors inspect the entire roof structure including flashing, ventilation, and roof decking before installing new materials.

Ensuring the correct roof decking thickness and replacing damaged plywood helps create a strong foundation for the new roofing system and helps protect the home from water damage for many years.

Original article published by WA Roofing Expert

https://www.waroofingexpert.com

Professional roofing advice written by experienced roofing contractors. 

A professional roof repair can solve many common roofing issues, particularly when leaks or damage are identified early. For roofs that are nearing the end of their lifespan, a full roof replacement is often the more reliable solution. WA Roofing Expert offers roof repair, roof replacement, seamless gutters, and downspouts throughout King County and Snohomish County Washington.