Should flashing be under or over shingles?

All shingle manufacturers require step flashing at sidewalls for both asphalt, wood and slate. 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 is roof step flashing?

Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center. It is used for roof to wall flashing. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall.

What size is roof step flashing?

4 by 4 by 8 inch
Step Flashings are generally in 4 by 4 by 8 inch pieces. Step Flashings are used to seal roofing materials into a sloped roof. Such materials include: shingles, slate or tile.

What is the best sealant for flashing?

Loctite PL Roof and Flashing Polyurethane Sealant is a premium quality, commercial grade sealant developed especially for forming permanent, water and weatherproof seals in all exterior gaps and joints.

What do you seal roof flashing with?

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 do you need to know about roof flashing?

Roof flashing is a thin material, usually galvanized steel, that professional roofers use to direct water away from critical areas of the roof, wherever the roof plane meets a vertical surface like a wall or a dormer. Flashing is installed to surround roof features, such as vents,…

Why is flashing important, and how can I install it?

/ What is Roof Flashing, Why is it Important, and How Can I Install It? Roof flashing is a thin material, usually galvanized steel, that professional roofers use to direct water away from critical areas of the roof, wherever the roof plane meets a vertical surface like a wall or a dormer.

How to install kickout and step flashing on roof?

Here’s how to install kickout and step flashing: Step One: Place your kickout flashing on the base of the roof, snugly against the wall. Step Two: Place the first piece of step flashing over the end of the starter strip, ensuring it leads directly into the kickout flashing.

What’s the difference between step flashing and base flashing?

Counter-flashing: Placed opposite to base flashing, or above base flashing, counter-flashing completes the two-part team. Step flashing: Step flashing is a rectangular piece of flashing bent 90 degrees in the center. It is used for roof to wall flashing.