How To Apply Flashing With A Rolled Roof

Hammer nails into the rolled roofing to secure it.

How to apply flashing with a rolled roof.

First use a stiff wire brush and solvent to clean the surface of any dirt debris or corrosion keep solvent away from asphalt shingles. Step flashing on roof peak. Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent. Coat the flashing with a zinc based primer followed by two or more coats of spray on rust preventive metal paint.

You may want to paint the flashing to match the roof. Water can accumulate in the roofing or flashing on a flat roof causing ponding that will eventually result in rotted underlayment and a roof leak. If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend. Install an asphalt roll surface with polymer bituminous flashing on a low pitched but not flat roof.

This product is ideal for those parts of the roof that are connected to an extension or where the addition meets the fabric of the older building. Bend the corner flashing tightly around the corner. Once even a small section of roofing cement fails you ll have a leak. Lay it from the bottom of the roof to the top ensuring 4 inches of overlap at each base line.

Apply a thin bead of silicone around the opening of the vent pipe area and lay the membrane in place. The metal flashing must overlap the material not the other way around. Cut the sections of flashing with tin snips as needed and nail them to the roof with roofing nails or screw them with. Provide 6 inches of overlap under each side of the flashing.

But it doesn t work that way. Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Roof shingle over step flashing. This aluminum flashing protects the edges of the roof sheathing from water.

Make sure you use a strong hammer and 1 inch 2 5 cm roofing nails. Ensure that you hammer the nails properly into the roof don t leave the nails sticking up above the layer. It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing. Hammer the nails in at 10 inches 25 cm intervals across the roof.