Copper Flashing - 16 oz 24 Gauge 10' Rolls in Various Widths for Roofing, DIY, or Contractor use-Lead Free Copper - can be Used with Pressure Treated Lumber (2" Width)

Product Information

Through-wall flashing is used at all points where moisture may enter the wall, and in selected places particularly susceptible to water damage. Commonly, our roof window flashing includes an upper element, 2 side parts, a bottom element and drainage gutter. Most modern construction materials are fairly resistant to moisture penetration. However, many joints between masonry units, panels, or architectural features are not. The effects of natural movement due to settlement, expansion, and contraction tend to compound the problems and may eventually lead to leaks. Flashing is used to prevent moisture from entering at such locations. It is also used to divert to the exterior moisture that has already entered various components of a structure. If your roof has many peaks, dormers, skylights, and chimneys, then you know that you need a considerable amount of flashing that will cost more than average. There are several parts of your roof that you may not even think about that require flashing, such as around your chimney or around your windows and skylights. Here are some of the main parts of your roof that you should consider applying flashing to:

There are a wide range of roof flashing types that are used in different contexts. Some are designed for roofers to install around features such as chimneys, roof windows and vents. Others are designed to protect the roof where it meets the house wall. Fasteners: Same metal as flashing/sheet metal or other non-corrosive metal as recommended by sheet manufacturer. Match finish of exposed heads with material being fastened. Copper– Longer lasting than aluminium and has the same malleable properties, but it is usually more expensive. It’s most commonly used for chimney flashing.General: Except as otherwise indicated, comply with manufacturer's installation instructions and recommendations and with the "Copper in Architecture" handbook published by the Copper Development Association Inc. (CDA). Anchor units of work securely in place by methods indicated, providing for thermal expansion of units; conceal fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weatherproof. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to work of this Section. On nailable sheathing, the flashing should be fastened with wide head nails or cleats. Nailing through flashing prohibits movement and should be avoided when movement is expected. The nail should be driven just above the upper edge of the flashing, allowing its wide head to hold the copper sheet. Nails or cleats should be spaced no more than 12" O.C. Nails can sometimes lead to issues with inflexibility – not allowing the roof to expand and shrink in different weather conditions – so roofing cement is usually preferable. Examples of flashing on roof elements

Product data for flashing, metal, and accessories: Manufacturer's technical product data, installation instructions and general recommendations for each specified sheet material and fabricated product. Roofing felt is sometimes used in flashing, but should only ever be used in conjunction with another material. Felt itself is not waterproof and is not particularly durable on its own. Sealant Valley flashing– This is installed around any open valleys on the roof (where two differently sloped sections of roof meet). It not only directs rain water off the roof correctly, but also helps to prevent debris build up. Install expansion joints at frequency recommended by CDA. Do not fasten moving seams such that movement is restricted.As a roofer or window installer, it’s important to select the correct flashing type that pairs with your roof window and roof material. A combination of different types of flashing are often used around elements of a roof. Roof windows SELECT FLASHING, COPING, FASCIA/GRAVEL STOP, SCUPPERS, OR CONDUCTOR HEADS BELOW AS APPROPRIATE FOR PROJECT.

The majority of materials used for flashings are thin, malleable metals, with the three most popular being: inch (150-mm) or 12-inch (300-mm) long samples of fabricated products exposed as finished work. Provide complete with specified finish.Clean exposed metal surfaces of substances that would interfere with normal oxidation and weathering. RETAIN ABOVE FOR NONPROPRIETARY OR BELOW FOR SEMIPROPRIETARY SPECIFICATION. REFER TO DIVISION-1 SECTION "MATERIAL AND EQUIPMENT." High Temperature Grade Water Barrier Underlayment: Cold applied, self-adhering membrane composed of a high density, cross laminated polyethylene film coated on one side with a layer of butyl rubber or high temperature asphalt adhesive. Provide primer when recommended by water barrier manufacturer.