Booking a professional to replace your garage or shed roof could leave you facing a sky high bill from your local roofing company. If you live in an area which isn't known for strong winds, you might want to install a tin roof. Tin is a relatively cheap option and is well known for its durability. To find out how to install a tin roof, please read on.
Determine which sort of tin roof you wish to install. The two basic options available are R-panel and V-crimp. R-panel has high ridges and requires 5/16" lap screws to install. A much simpler option can be found in V-crimp roofing as it doesn't need lap screws.
Take down the measurements for the roof's length and height on each side. This will help determine the quantity of metal edging that will be required.
Next, measure your roof's height. To this figure, add 2 to 4" for overhang. This figure will help determine the quantity of metal roofing that is needed.
Take these measurements to your local roofing supply company. With these figures they will be able to provide you the quantity needed to effectively install a tin roof on your shed or garage.
Use a roofing shovel to remove your roof's old shingles, if possible, prior to installing your tin roof.
Line roof with tar paper or roofing felt to prepare for new tin roof to be installed.
Lay down slat board into the old roofing so the new roofing can be attached easily. Lay lengths of pine at 2 ft intervals length-wise measuring from the bottom of the roof. Secure with 3" Phillips head screws.
Using your hammer and the 1 1/4" roofing nails, nail down the metal edging along the edge of the roof.
Now it is time to lay your tin sheets/panels. If you are right handed, start on the right hand side - and vice versa for lefties. You should work your way across the roof with your panels.
For your first sheet, screw 1/4" metal wood screws every 2 feet (using slat boards installed in step 7 as your guide) along the center and inside edge of the sheet only.
Your second sheet should overlap the one just laid. If it is V-crimp, one dip or crimp in the sheet above will overlap one crimp in the sheet beneath. For R-panel tin roofs, one ridge should overlap a ridge in the panel below. Likewise, in V-crimp, one crimp should overlap the crimp in the one below.
This (and the sheets which follow) can be secured into the slat boards -every 2 feet - using the 1/4" metal wood screws.
Once you get to your last sheet on this side of roof, use your measuring tape to measure how much extra space there is left over. Use some chalk to mark the ridge or crimp which runs just after the roof's edge. Use your tin cutter/snips to trim this before screwing in.
Repeat on opposite side.
For R-panel only: Once both sides are covered, screw in 5/16" lap screws every four feet at the points where metal sheets overlap.
Metal trim can now be laid on the roofs' sides at the edge and also over roof's peak. To lay it over the peak/central ridge, you will need to notch it so it can be bent over it. Secure with 1/4" metal wood screws every 24".
For R-panel only: Install your closures which are 36" lengths of foam rubber. These self-adhesive strips needs to be pushed up into the openings along the bottom edge to prevent animals from being able to enter.
Screw the bottom of your sheets down.
R-Panel only: To do the ridge, you will have a foam enclosure to fill in the wide gap at the top of the sheets.
R-Panel only: install the metal ridge. Screw into the ridge at the high point - every 2 feet - using 5/16" lap screws.
V-crimp only: Using 1/4" metal wood screws, secure on each side close to - but not at - the very peak. Again this should be every 2 feet.