How To Flat Roof Flashing

When fitting cover flashings to a flat roof like the one pictured bottom right there is no need for the third covering angle of lead the lead is simply cut just above the flat roof to stop capillary action and the flashing cutting into the flat roof itself.

How to flat roof flashing. Look for any type of vents as well. Flashing is critical to certain areas of your roof namely the places where the roof surface meets a wall sidewalls and front walls the low points where two roof slopes meet called valleys roof protrusions bathroom kitchen vents skylights and the roof s edges rakes and eaves. Of course you don t want cement oozing all over your roof but you do want to ensure a strong seal. Purchase the cement in a tube that will fit your caulk gun.

Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Recaulk the joints between the roof and the flashing. Look for the chimney or any type of pipe coming out of the building. Two ways to flash roof edges.

Locate all of the areas around the flat roof where water can potentially enter. Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing. Fasten loose nails and cover exposed nail heads with roofing cement. It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling.

Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right. Flat roof flashing is also installed around the perimeter of the roof to protect the underside of shingles. Bend the corner flashing tightly around the corner. One common method is to lay the edge metal under the eaves membrane and over the rake.

Details concrete masonry roofing wrb flashing. Ensure it sits flat and extends at least 8 inches above the shingles. Nail it in place with two nails one on each side of the top edge. This can be a source for anything from smoke to steam.

If you are working with valley flashing lift the edges of the surrounding shingles and spread roofing cement on the flashing about 6 inches in from the edge of the shingles.