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2. Flashing (weatherproofing) - Wikipedia

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

   In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...

3. Seam sealant - Wikipedia

   en.wikipedia.org/wiki/Seam_sealant

   Seam sealants are sprayed or extruded over the joined edges of these overlaps, and they then either cure to a flexible waterproof "seal" by drying (dehydrating) in the case of water borne compositions, or thermoset irreversibly to a flexible adherent seam seal by going through an oven bake in the case of plasticized polyvinylchloride compositions.

4. Covering (construction) - Wikipedia

   en.wikipedia.org/wiki/Covering_(construction)

   A roof covering is composed of various elements including: Roof support (beams, boards, rafters, battens, etc.) Roof underlayment (waterproof membrane, thermal insulation, etc.) Ventilation elements for the underlayment (moisture and vapor evacuation) Roof covering, visible exterior coating (tiles, slates, shingles, etc.)

5. Self-amalgamating tape - Wikipedia

   en.wikipedia.org/wiki/Self-amalgamating_tape

   Self-amalgamating tape is a non-tacky silicone rubber tape that when stretched and wrapped around cables, electrical joints, hoses, and pipes combines or unites itself into a strong, seamless, rubbery, waterproof, and electrically insulating layer. [1] [2] Unlike many other polymers and fibers, it is heat-, sunlight-, and weather-resistant.

6. Oakum - Wikipedia

   en.wikipedia.org/wiki/Oakum

   Oakum and tools for caulking Hemp Prisoners picking oakum at Coldbath Fields Prison in London. Oakum is a preparation of tarred fibers used to seal gaps. Its traditional application was in shipbuilding for caulking or packing the joints of timbers in wooden vessels and the deck planking of iron and steel ships. [1]

7. Waterproofing - Wikipedia

   en.wikipedia.org/wiki/Waterproofing

   The roof covering materials, siding, foundations, and all of the various penetrations through these surfaces must be water-resistant and sometimes waterproof. Roofing materials are generally designed to be water-resistant and shed water from a sloping roof, but in some conditions, such as ice damming and on flat roofs, the roofing must be ...