How to Shingle a Barn Roof

What You'll Need
Tar paper
Tape measure
Staple gun with staples
Hammer and nails

Building a barn roof is no different to building any other sloping roof. Providing you have some basic DIY experience and the right tools and materials at your disposal, there is no reason why you can’t shingle a barn roof by yourself. Nonetheless, it does require some important preparation to make sure that the barn roof is going to be free of leaks.

Step 1-Taking the Measurements

To get the right amount of materials that you need, you will have to make accurate measurements first. Begin by determining the complete square footage of the barn roof. To calculate this, simply multiply the measurements of the length and width of the roof. If there are multiple sections to the roof, work out the measurements for each section and then add them together. Once you have done this, you will then know how many packs of shingles you will need to buy. It is a good idea to order 5 to 10 percent extra just in case you run out. Also, make sure you have plenty of tar paper.

Step 2-Applying the Tar Paper

The tar paper is a very important part of any sloping roof. It helps to insulate the roof and prevent any leakage of water that may manage to seep between the tiles. It also forms a base upon which you put the shingles. To start applying the tar paper, begin at the peak of the roof. Carefully lay the paper upon the roof and use the staple gun to staple it firmly in place. It is a good idea to have around 3 inches of overlapping tar paper on each section, as this will further help to prevent leakage. Extra tar paper should also be applied to the pinnacle of the roof, again improving insulation against leakage.

Step 3-Applying the Shingles

Applying the shingles is not a particularly difficult job, but it is time consuming and needs to be done carefully. There are various methods, but the best way is to begin with one of the corners of the bottom of the roof and work your way to the other side. Lay the shingles carefully so that they are overlapping each other as designed. Nail them in place and make sure that each layer overlaps appropriately. To continue with the second layer, it is a good idea to begin from the center of the roof. Align the first shingle of the second layer with the top of the seam of the previous layer. Continue in this manner until you have reached the top of the roof.

You will also need to have a stack of shingles that have been cut in half. These are to be used on the apex of the roof. As with the other shingles, these should be nailed in place and overlapping the other shingles appropriately. If there are any excess shingles hanging over the side of the roof, they should be trimmed away.