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2. Flashing (weatherproofing) - Wikipedia

   en.wikipedia.org/wiki/Flashing_(weatherproofing)

   Roof penetration flashing Used to waterproof pipes, supports, cables, and all roof protrusions. Stainless steel penetration flashings have proven to be the longest lasting and most reliable roof flashing type. Channel flashing Shaped like a “U” or channel to catch water (e.g., where the edge of a tile roof meets a wall). Through wall flashing

3. Nail (fastener) - Wikipedia

   en.wikipedia.org/wiki/Nail_(fastener)

   Copper nail – nails made of copper for use with copper flashing or slate shingles etc. D-head (clipped head) nail – a common or box nail with part of the head removed for some pneumatic nail guns Double-ended nail – a rare type of nail with points on both ends and the "head" in the middle for joining boards together.

4. Roof - Wikipedia

   en.wikipedia.org/wiki/Roof

   Often, the first part of a slate roof to fail is the fixing nails; they corrode, allowing the slates to slip. In the UK, this condition is known as "nail sickness". Because of this problem, fixing nails made of stainless steel or copper are recommended, and even these must be protected from the weather. [7]

5. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   It protects the roof deck from rain before the roofing is installed. It provides an extra weather barrier in case of blow offs or water penetration through the roofing or flashings. It protects the roofing from any resins that bleed out of the sheathing. It helps prevent unevenness in the roof sheathing from telegraphing through the shingles.

6. Architectural metals - Wikipedia

   en.wikipedia.org/wiki/Architectural_metals

   Ornamental stamped metal made from tinplate was an affordable alternative to plasterwork. Although tinplate is still available today for ceilings, roofing and flashing, it is generally considered expensive since the initial cost is more than that for common modern roofing types such as asphalt shingles or built-up roofs. A well-maintained ...

7. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   Detailing of these systems also plays a part in success or failure: In some systems ready-made details (such as internal and external corners, through-roof pipe flashings, cable or skylight flashings etc.) are available from the membrane manufacturer and can be well bonded to the main sheet, whereas with materials such as tar papers this is ...