Flashing A Roof Window

The second half of window flashing occurs once the window unit is secured and squared within the rough opening.

Flashing a roof window.

In addition to metal flashing self adhesive flashings similar to waterproof shingle underlayment wsu sheets used for roofing edges are often applied around window or door openings. Roof window flashing is available for slate tile roofs in a range of sizes. It is essential to ensure you select the right size window flashing to ensure a water tight fit and that this is installed correctly. With the help of underlayment roof flashing is required on your roof to keep water from getting underneath your shingles.

Typically flashing a window is a two part process. Because of their versatility. As mentioned above apron flashing or cover flashing are probably the most common type of roof flashings in the u k. 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.

The first half of window flashing occurs when you or your builder preps the rough opening for the window s installation. 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. Flashing is installed to surround roof features such as vents chimneys and skylights. If the window already exists the self adhesive flashing will likely cover the sheathing and any window flanges only.

Window flashing is installed at the same time as the window unit. Often seen on the front and back of a chimney abutting brickwork on flat roofs or where a roof meets the brickwork of a house or outbuilding.