Install Flashing Rolled Roofing

Even if one piece of step flashing fails the flashing and shingle below it start the process over again.

Install flashing rolled roofing. Install a lead flashing mark edges of flashing on the new roof. In roofing one square equals 100 square feet. The roofing should overhang the eaves by inch except where you install drip edge flashing on top of the roofing along the rake edge. Nail the roofing strips parallel to the roof edge set in 1 and 8 from the roof edge with nails spaced 4 o c.

Do not use the eaves as a guide instead because they can be uneven. Install drip edge flashings roofing felt and wsu if needed. You can install metal valley flashing but it is common to simply apply an 18 inch wide strip of roll roofing instead. You will need 1 10 gallon of lap not mastic cement for every roll and 2 pounds of roofing nails for every square.

Attach drip edge along the edge of the roof with roofing cement. Snap a chalk line as a guide for the first layer roofing. How to install roof flashing against a wall. Reinstall lead flashing mechanically fastening it to decking.

Cut the sections of flashing with tin snips as needed and nail. Install the rolled roofing first making sure it is cut tight to the plumbing vent. Provide 6 inches of overlap under each side of the flashing. Set it in a bed of roofing cement smooth out any creases and drive nails near the edges.

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. On this video i showed you how to prepare a basic flat roof step by step hope you learn something and. How to install polymer bituminous flashing. Install roll roofing measure 35 inches up from the eaves at several intervals along the roof and mark them.

Install a drip edge around the perimeter of the roof. An underlayment of felt roofing is optional. Lay it from the bottom of the roof to the top ensuring 4 inches of overlap at each base line. Step flashing step flashing redirects the water back onto the shingle.

This aluminum flashing protects the edges of the roof sheathing from water. Flat roof installation. Remove flashing and install a layer of roof cement within the marks. Install drip edge and install 9 cant strips of roll roofing material along the rake and eaves edges gable ends and lower roof edge such that the roofing strip overhangs the roof deck by 1 4 to 3 8.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. Install an asphalt roll surface with polymer bituminous flashing on a low pitched but not flat roof.