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2. Flashing (weatherproofing) - Wikipedia

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

   Before the availability of sheet products for flashing, builders used creative methods to minimize water penetration. These methods included angling roof shingles away from the joint, placing chimneys at the ridge, building steps into the sides of chimneys to throw off water, and covering the seams between roofing materials with mortar flaunching.

3. EPDM rubber - Wikipedia

   en.wikipedia.org/wiki/EPDM_rubber

   A roll of EPDM flashing with fleece on the back, used for waterproofing roofs. EPDM is stable towards fireproof hydraulic fluids, ketones, hot and cold water, and alkalis. As a durable elastomer, EPDM is conformable, impermeable, and a good electrical insulator.

4. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

5. Rain gutter - Wikipedia

   en.wikipedia.org/wiki/Rain_gutter

   Roof integral trough along the lower edge of the roof slope which is fashioned from the roof covering and flashing materials. Discrete trough of metal, or other material that is suspended beyond the roof edge and below the projected slope of the roof.

6. Roof shingle - Wikipedia

   en.wikipedia.org/wiki/Roof_shingle

   Where slates are particularly heavy, the roof may begin to split apart along the roofline. This usually follows rot developing and weakening the internal timbers, often as a result of poor ventilation within the roof space. An important aspect to slate roofs is the use of a metal flashing which will last as long as the slates. Slate shingles ...

7. Covering (construction) - Wikipedia

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

   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.) Elements ensuring rainproofing and proper drainage of the roof (ridge caps, flashing, edge waterproofing elements, etc.)