How To Apply Asphalt Roof Cement

You can get special forms of roofing cement that can be laid down effectively even on a wet surface though the regular style adheres best to dry surfaces only.

How to apply asphalt roof cement. Spread the roofing cement along the edges of your roof so it s about 1 8 1 4 inch 3 2 6 4 mm thick. Apply the cement in stages. Starting at the bottom of the roof map out a guideline with chalk. You can get roofing cement at the local hardware or building supplies store.

Plastic roofing cement also called mastic asphalt plastic or flashing cement typically contains asphalt and various solvents and fillers. It is applied to your roof along with your primary roofing material to provide a solid barrier against moisture and to prevent cracking and leaks. Modern roof cement will not contain asbestos. Also apply asphalt cement over the nail heads exposed on the last ridge shingle to prevent water.

Roofing cement comes in a caulking tube ready for application or in a tub. Use a trowel to scoop up the roofing cement. At any hardware or home improvement store you ll be able to pick up roofing sealant or cement. Nail at the four corners to the end of the ridge and always add a little dab of tar to cover the nail heads.

Continue to chalk additional guidelines based on the width of the shingle through at least four courses rows across the roof. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. If the sealant or cement doesn t come with an applicator you can use a caulking gun to apply it to the shingle. Of course you can t use roofing cement for just anything but on the other hand it is a rather multi purpose product.

Application apply roof cement with a trowel going to a depth of about 1 8 inch. Apply a heavy bead of asphalt cement. Apply roofing cement to the roof. Roof cement is an emulsion of asphalt refined mineral spirits plasticizers and non asbestos reinforcing fibers.