Additional flashing pieces may be required for shakes or other thick roofing materials.
Flashing a skylight in a cedar roof.
When it comes time to replace your cedar roof and are considering a switch to asphalt shingles there are some differences to consider.
The installer starts at the bottom of the skylight with the sill flashing.
Copper is a popular flashing material with wood roofs although some experts caution against using copper in direct contact with red cedar or its runoff since the soluble tannins in cedar can etch copper and in extreme cases lead to perforation of the flashing within 10 to 20 years see also flashing wall details copper and metal.
If it s carefully removed when the old roof is torn off it should be reusable.
The purpose of all roof flashing including skylight flashing is to keep as much of the moisture as possible on the surface of the roofing material.
Open valleys have metal flashing to protect this critical area of the roof.
After a row of roofing material is installed over the bottom edge of the underlayment the sill flashing is placed at the bottom of the skylight.
Step flashing is laced over each course of asphalt shingles cedar shakes and shingles and most alternative steep sloped roofing materials no more than 1 above the weather exposure of the roofing.
The life expectancy of either material is a huge consideration.
Sill flashing step flashing and saddle flashing.
Most residential skylights sit on a raised curb made watertight with metal flashing.
Velux standard flashing has no option to match roof colour.
Velux standard flashing is available in one colour only.
The flashing kit has three components.
We offer a variety of skylight flashing systems to ensure a weathertight fit for virtually all roof types and slopes.
Some skylights come with a kit and you don t have to build the aprons and install step fl.
Asphalt shingles are rated for 30.
Asphalt shingles are more fire resistant than cedar shingles too although some additives may help with that.
Velux skylight flashing kits are designed to shed water without relying on sealants that can break down over time.
Skyspan custom pitch adaptor flashings for velux pitched roof skylights and for velux flat roof skylights are available.
The skyspan pitch adaptor flashing lifts the skylight on the top side so that it s pitched greater than 15.
While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately.
If not you ll have to buy new flashing 50 to 100 either from the skylight manufacturer or from a roofing company that has a metal fabrication shop look under roofing.
Properly installing a skylight requires detailed skylight flashing.
