Garage roof joists. Want to run the joists for the roof length ways which is 545m length gonna be doing osb board and epdm roof. You need 170mm at 400 centres otherwise 200mm joists you dont have wallplates for flat roofs you can use plain or treated but treated are obviously better for a roof which might get damp and suffer insect attack. Where a new flat roof abuts an existing external wall the joists can be hung on metal joist hangers which are fixed to a horizontal timber plate wall bolted to the wall. If you have an attic over your garage these joists also bear the load of your attic flooring and any materials you store in the attic.
In this video i will provide you with a few ideas and reasons behind them on why you should not use certain garage roofs for storage and how you can add floor joist so that they can be used for. A cavity closer should be provided to the top of the walls to prevent fire spread and to stop damp air entering the roof space. When i drew the plans for the extension of the garage i could see that the increased roof height in the rebuilt section of roof would be fine for shorter cars like the mini but the joists of the original roof structure would be an obstruction to lifting average length cars like the evo. This step by step diy project is about how to build a garage roof.
The wooden joists or beams over your garage help hold your roof in place. This video will provide you with a way to strengthen your garage ceiling for storage but doesnt make any. Building a roof for a single car garage is easy but there are a few thing you should take into account such as the shape and structure of the rafters. Click on this link for more information about garage construction and roof framing.