Flashing refers to thin pieces of impervious material installed to prevent the passage of water into a structure from a joint or as part of a weather resistant barrier system. In modern buildings, flashing is intended to decrease water penetration at objects such as chimneys, vent pipes, walls, windows and door openings to make buildings more durable and to reduce indoor mold problems. Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, and other materials. After soldering, carefully remove flux and other residue from surfaces. Neutralize acid flux by washing with baking soda solution, and then flushing clear water rinse. Wipe and wash solder joints clean. Loudon, J. C.. An encyclopædia of cottage, farm, and villa architecture and furniture; containing numerous designs for dwelling … each design accompanied by analytical and critical remarks .... London: Longman, Rees, Orme, Brown, Green, & Longman, 1833. 126. Print.

Bread-Pan" construction details similar to Detail 9.2I can also be used. For Additional Information: Flashing damage is, without a doubt, an indicator that you may need roof repairs or an update, so regularly monitoring the quality of your flashing might save you big down the road. Copper is an excellent material for flashing because of its malleability, strength, and high resistance to the caustic effects of mortars and hostile environments. Flashing, in general, is expensive to replace if it fails. The long life copper flashing offers, is a major asset in this application. General Requirements You are probably aware of the status of your roof’s lifespan—however, your flashing’s lifespan should be considered as well. Advise Contractor of required procedures for surveillance and protection of flashings and sheet metal work during construction to ensure that work will be without damage or deterioration other than natural weathering at time of Substantial Completion.The 12 most common roofing problems a homeowner, and therefore a roofer, might encounter and what to do abo... There are a number of different types of flashing that you can choose from when either updating your roof or sealing it for the first time.

Adhesives: Type recommended by flashing sheet manufacturer for waterproof/weather-resistant seaming and adhesive application of and compatibility with flashing sheet.

9.3E. Partial Cover at Short Parapet

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. Counter-flashing– This is paired with base flashing to protect the upper edge of the base flashing, creating a much stronger seal.

Drawings are diagrammatic and are intended to establish basic dimension of units, sight lines, and profiles of units. Installation: Installed above windows and doors, or the edges of an entire roof, Drip tray flashings help to control the water flow away from the fascia of the house by providing an efficient course for it to run from the roof. 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 General: Submit the following in accordance with Conditions of Contract and Division 01 Specification Sections. Aluminium– Arguably the most commonly used material, it is easy to form and shape as needed and is also lightweight.

9.1A. Brick Veneer on CMU at Decking

Install units plumb, level, square, and free from warp or twist while maintaining dimensional tolerances and alignment with surrounding construction. Sealant Joints: Where movable, nonexpansion type joints are indicated or required for proper performance of work, form metal to provide for proper installation of elastomeric sealant, in compliance with CDA standards. Sternthal, Daniel (2000). Copper flashings in contemporary construction, The Construction Specifier, Magazine of the Construction Specifications Institute, October 2000 There are different terms given to flashing, often determined by where they are used or their shape.