Roof Decking Over Old Decking

One important reason to avoid doing this is that the deck foundation may not be able to handle the extra weight.

Roof decking over old decking.

This is usually because low quality leak prone decking materials such as epdm rubber are used often in an effort to save money. Aluminum drip edge over the corner of the roof. Seal the drip edge. The new plywood will have to be nailed to the rafters or roof trusses.

Roof decking or sheathing is the lumber that is attached to the roof trusses of your home. Use uncured epdm tape to cover the nails and seal the drip edge to the roof. This contact area should be limited only to the top of the joists leaving most of the decking exposed on both sides. The joints between two materials will readily trap water in wet environments.

Onto the board below. Whether your deck framing is treated or not if a screwdriver penetrates into punky soft wood anywhere indicating rot it s best to start your deck from scratch. Guide a knife along it to trim the excess rubber. The rubber roofing i ve been using for 15 years a glue down 60 mil epdm membrane from international diamond systems offers several advantages.

If you remove it all then reinstall you can have cracking and popping of the drywall ceiling. A quality re roof begins with a solid foundation which is the roof decking. Installing decking over old decking will drastically reduce the lifespan of the material. But with the old plywood left in place it will be considerably more difficult to locate the rafters to ensure proper nail.

Neither wood will last nearly as long as your low maintenance deck improvements. Plywooding over old roof deck one thing to consider when stripping off the old plywood is to remove and replace as you go. Of roof decking costs 800 2 800 to install depending on the material you choose. It s reliable it s fairly easy to work with and it requires no special tools.

No matter the reason the keys to a long lasting deck above a living space are the same. Uncured epdm must be protected from uv rays which the decking. This is the material that your roofing shingles are nailed to. If your deck is framed with cedar or redwood it s best to start over and reframe it with treated wood.

Remove the wood decking depending on the size of your deck you could save two or three days work by installing new decking boards directly over the old ones. On average 300 sq ft. A reliable roof membrane and details that minimize any damage to the roof from the deck loads. Unfortunately many homeowners who have a flat deck roof have to deal with frequent leaks.

Drip edge protects the corner. Without a good solid roof deck in which to nail the shingles problems are sure to arise when the first big windstorm occurs.