- 1 Does flashing go over or under shingles?
- 2 What are the different types of roof flashing?
- 3 Can you install step flashing on existing roof?
- 4 Where should flashing be installed in a masonry wall?
- 5 When should I use roof flashing?
- 6 Should roofer replace flashing?
- 7 What color should Roof Flashing be?
- 8 How do you seal the flash on a metal roof?
- 9 What is counter flashing in roofing?
- 10 Does metal roof need drip edge?
Does flashing go over or under shingles?
Instead of installing the step flashing between shingles, the flashing rests on top of the shingles. It’s not unusual to see sealant installed when sidewall flashing is missing.
What are the different types of roof flashing?
Common Types of Flashing:
- Continuous flashing: Also known as “apron flashing”.
- Drip edges: Often installed under the roofing felt along the eaves of a roof.
- Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center.
- Valley flashing: A W-shaped piece of metal flashing.
Can you install step flashing on existing roof?
Flashing is generally installed at any joints or edges in the roof where water could otherwise work its way in. In order to properly install new flashing, you‘ll have to remove the shingles surrounding your old flashing, and then re-lay them after installation.
Where should flashing be installed in a masonry wall?
Flashing must be located beneath the first course of masonry above the finished ground level above the foundation wall or slab and at other points of support, including structural floors, shelf angles, and lintels when masonry veneers are designed per Section R703.
When should I use roof flashing?
Roof flashing is required on your roof to keep water from getting underneath your shingles, with the help of underlayment. Flashing is critical to certain areas of your roof — namely, the places where the roof surface meets a wall, valleys, protrusions such as vents and skylights, and the roof’s edges.
Should roofer replace flashing?
Because of their location, these flashings are not always easy to remove and replace. In almost every circumstance of a roof replacement, vertical wall flashing should be replaced. Old flashing can be cut away with metal snips or torn out after prying up clapboard siding.
What color should Roof Flashing be?
Roof flashing is brown or white and does not present a problem if it matches the trim color. With other trim colors the flashing looks very bad unless you paint it to match.
How do you seal the flash on a metal roof?
Renew flashing seals by chipping out the old mortar and caulking along the edges of the flashing. Use special masonry caulk to seal the joints between the flashing and the chimney. Seal the seam between the cap and step flashing with urethane roofing cement or silicone caulking compound, as shown at right.
What is counter flashing in roofing?
Counter–flashing is designed to prevent moisture from entering behind the vertical flange of headwall or sidewall flashing. Sometimes, the exterior wall-covering material serves as the counter–flashing, and sometimes a separate counter–flashing might be installed.
Does metal roof need drip edge?
A drip edge is not needed for metal roofing. If you make sure to overhang your metal roofing at least an inch, the drip edge is not necessary at the eaves and rakes.