How do you install a built-up roof?

First, contractors attach base sheets to the roof’s subsystem using roofing nails. Then, they use tar, concrete, adhesive, or asphalt to glue down felt over the top of the base sheeting. Next, roofers install a layer of gravel or cap sheets, which they then cover with a final layer of asphalt.

What is flashing in building terms?

Flashings are thin, waterproof sections of material designed to protect seams in building construction from water intrusion. Flashings are typically used in places where surfaces are joined that are susceptible to leakage. Roof protrusions such as chimneys or vent pipes are common locations for the use of flashings.

How many pieces are in a bundle of flashing?

There are 100 pieces in each package.

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.

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.

Can a built up roof be repaired?

Although built-up roofs are durable, leaks can develop. If simple repairs do not remedy leaks, the roof surface may need to be replaced. This is a job for professionals; rolling out layers of roofing felt and hot mopping asphalt is more than most homeowners will want to take on.

What is the most common material used for roof flashing?

Copper is the most preferred for most flashing applications. Aluminum – its durable and easy to form and relatively cheap. Aluminum is the best for a chimney, Valley or base flashing but a finish must be applied to prevent corrosion especially when it comes into direct contact with treated wood, concrete or cement.

What materials are used in roof flashing?

around the chimney and at the walls or step-up areas.

What’s the purpose of roof flashing?

Roof flashing is sheet metal that prevents water from seeping into a home. The roof of a residential home serves one major purpose, and that is to be a barrier against the weather outside. The most difficult weather element to control is water, and roof flashing acts as the last line of defense against water leakage.

What does flashing on a roof mean?

Flashing — Flashing on a roof refers to the metal pieces that are used to divert water from places where it might collect, such as hips and valleys. Flashing can be made from a variety of materials. You can use a galvanized flashing, a galvanized alloy, copper, lead coated copper or stainless steel.

What are roof/sidewall flashings?

SIDEWALL FLASHING A sidewall is a junction between a wall and a sloped portion of a roof . Except where walls are brick, the vertical part of the sidewall flashing should extend up behind the exterior wall covering, just like with headwalls. The horizontal part of the flashing will vary, depending on the type of roof-covering material