Bituthene Roof Construction Over Plywood Decking

Bv021594 08 07pm 02 09 20.

Bituthene roof construction over plywood decking.

Bituthene deck prep surface treatment surface leveler for application to uneven or rough concrete surfaces. The bituthene waterproofing system is the most trusted post applied waterproofing membrane. If you re wondering why the roofers can t just install new shingles and roofing accessories over your existing roof deck this article will guide you through one of the most common reasons. The new plywood will have to be nailed to the rafters or roof trusses.

After receiving a few estimates some or all of the roofing contractors propose to tear off your existing roofing material and re sheet with plywood. The 1 ply material is not durable and if used can. The bituthene 4000 membrane and bituthene 4000 surface conditioner are specifically designed for use as detailed in this product data sheet and are not intended for any other use. Cdx plywood glued and screwed to the framing.

To create a smooth surface and to protect the bottom of the rubber roofing from any fasteners or rough edges on the plywood i installed 1 2 in. Plazas decks inverted roofs green roofs and elevated decks. The plywood should be clean and free of raised nail heads to provide a uniform deck structure for the metal. If doing an all new roof decking definitely go with at least 5 8 thickness if you are spanning more than 16 inches between roof framing elements.

The roof sheathing is 3 4 in. For each of these applications and more there s a bituthene product developed by gcp applied technologies. Energy efficient and available in a variety of colors that will add value to your home metal roofing is a wise choice for homeowners. Fiber roof underlayment as a final substrate.

Plywood is a bit more expensive but is usually stronger and is often selected in cases where the roof covering is heavier such as for slate clay or concrete tile roofs. Modified bitumen roofs have a lot of advantages over other types of membrane roofing and are often seen as the modern alternative to the built up roof. Continuous notched 4 6 posts support the framing and also serve as rail posts. But in recent decades the asphalt composite shingle has taken off as the main roofing style.

Bitumen roofing is also available in 1 2 or 3 ply. Install waterproof felt over the plywood to add protection against moisture. Tunnels metro stations and infrastructure products. Given the large numbers of homes with cedar shake roofs installed in the 1980 s and 90 s many are coming to end of life now.

Cedar shakes have always been a popular roofing material especially in the pacific northwest.