Make sure to have a materials list, if not I have a list here for you:
* Asphalt rolls
* Roofing cement
* Roof paint
The first step in learning how to build a flat roof storage shed is to start by placing a layer of underlayment over the roof. This will act as a protective membrane and provide an additional barrier against bad weather.
Start at one end of the storage shed roof and lay the underlayment material onto the roof surface, be sure that there is about 2 inches extra on either end to hang over the edges of the shed’s flat roof.
The second step to take is to start cutting the asphalt rolls to the appropriate length. This will vary according to the length of the storage shed. It is very important to make sure the rolls are cut longer than required.
The next step is laying the asphalt rolls where the underlayment was first placed, and leave an extra 2 or 3 inches hanging over the edge of the roof from all sides. This provides drainage for rain water.
The fourth step is to tack the rolls into place. When the entire roof has been covered, use nails to secure the asphalt into place. The nails need to be 4 to 6 inches apart.
The fifth step in building your storage shed is to cover the entire roof with roof paint. This should be a tar based solution and will ensure the maximum life span of your storage shed.
The final step is to inspect the shed’s roof either twice a year or after any bad storms to optimize its lifespan. Be sure to pay attention to the seams in the roof where the asphalt has overlapped. If you find any gaps be sure to fix them with roof cement. Also make sure there is no build up of water as this will become heavy and may cause your roof to collapse.