How to Build a Garden Shed Roof

Published: 14th February 2011
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How to Build a Garden Shed Roof

Building a garden shed roof is not as difficult as you might think. As long as you follow the instructions supplied with your garden shed plans, you should end up with a tidy, waterproof garden shed roof. Ensure that you have all your required materials before starting to build the garden shed roof.

After measuring your shed dimensions and taking note of the length and width at each end, find a large, level surface (as close to your shed as possible) and lay out some 2"x4" and 2"x6" trusses.
Ensure that all the trusses are outlined correctly. Each truss consists of a minimum of three pieces forming a triangle. Stack the timbers for each truss one on top of the other. Make sure that each piece lines up with the one beneath it. It is important that all the timbers are cut to the correct length at this stage.
If you are using aluminum plates to join the timbers, you will need a heavy hammer or sledge hammer to join them to the timbers.
Mark up the truss location on your garden shed walls. Take your time doing this as accuracy is very important at this stage.
Start nailing the trusses into position. Each truss will require at least three nails at each end to make it secure. Again, it is vital that the trusses are centered before fixing otherwise the garden shed roof will look curved when it is finished.
When all the trusses are in position you need to attach plywood to cover the roof. Make sure that the plywood is nailed at 6" intervals (or less) to the trusses.
When all of the plywood is attached, you can apply a layer of roofing felt or sheet metal (depending on the design of your garden shed roof). If you are using roofing felt, do not turn it under the eaves as rain water will find a way to follow it to make contact with the timber. It is best leave the roofing felt hanging about 1/2" below the eaves and that will force the water to drip off without making contact with the timber.
The roofing felt should have at least a 2" overlap with adjoining sheets and is secured to the plywood using clout headed felt tacks at 4" intervals.
The roofing felt may need to be cut at the corners. If so, bend the felt into position to mould around the corners and fix using 1 1/2" nails.
After all this hard work building a garden shed roof, you should now have a beautiful and waterproof roof on your shed.

John Toal is a technical writer and is currently writing articles on garden shed construction.

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