Installing A Roof Over An Existing Deck

Building a shed roof over a deck.

Installing a roof over an existing deck. We will walk you through the entire process from siting the patio roof to raising posts attaching beams and installing the roof. A properly installed layover roof can look and function as well. You have to do it thoroughly so that the rafters sit flush on it. Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.

Make a cutting on one of the sides of the horizontal roof beam on an angle. Strips of 4 in wide epdm provide a layer of protection between the sleepers and the roof. A free standing roof needs to have posts sunk into the ground. Typical decks are designed to support 55 psf lbs per square foot.

Do not attach the post base to only decking. Joining a home made roof to your existing roof might require a level of expertise that you don t really have. The sleepers aren t fastened in place and the floor floats. Building on an existing deck.

These roofs are usually easy to install over a deck or patio just make sure you re not breaking any local building codes. In this scenario it might be a good idea to hire a professional to get the job done for you. Install post base connectors to attach the support posts to the deck frame. A free standing roof can be built over a deck paved patio or concrete pad.

If local codes allow setting the overhead directly on an existing slab but the concrete is not thick enough to support the overhead s weight you will have to pour new footings around the slab s perimeter or break out sections and pour deeper footings. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. Discuss the following issues with your professional handyman during the deck roof design process. Start here if you want to build a roof over a patio or deck.

Make sure the frame has the appropriate blocking to ensure a solid connection. If you have an existing deck it s possible to add a roof to it by installing additional supports. Porch decks require 25 additional psf for roof loads for a total of 80 psf. If it is next to a house or structure it should be secured to the siding or roof of that structure as well to keep it stable through high winds and lashing rains.

One alternative option that you can do yourself is to have a slightly higher roof on your deck so that it s above your main roof slightly and overhangs. The best time to build a roof over your deck is during the construction of the deck itself. It will probably only be a couple of days work and might not cost as much as you think. Attach the horizontal beam by using a nail gun.

After that to make it flush with the roof of the existing house cut the two outer rafters. Roof over deck cost.