How To Flat Roof Flashing

Fasten loose nails and cover exposed nail heads with roofing cement.

How to flat roof flashing.

Of course you don t want cement oozing all over your roof but you do want to ensure a strong seal. As you lift the shingles apply the cement to the back of the shingle about six inches in. Recaulk the joints between the roof and the flashing. Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing.

It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. Details concrete masonry roofing wrb flashing. Locate all of the areas around the flat roof where water can potentially enter. When applying the cement you want to apply a very liberal quantity.

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. Ensure it sits flat and extends at least 8 inches above the shingles. Flat roof flashing is also installed around the perimeter of the roof to protect the underside of shingles. Purchase the cement in a tube that will fit your caulk gun.

This can be a source for anything from smoke to steam. One common method is to lay the edge metal under the eaves membrane and over the rake. Look for any type of vents as well. 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.

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. Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing. Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound as shown at right. Look for the chimney or any type of pipe coming out of the building.

Two ways to flash roof edges.