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Shaped like a “U” or channel to catch water (e.g., where the edge of a tile roof meets a wall). Through wall flashing Spans the thickness of the wall and directs water to weep holes. Cap flashing (drip cap) Often used above windows and doors. Drip edge A metal used at the edges of a roof. Step flashing (soaker, base flashing)
Eaves must be designed for local wind speeds as the overhang can significantly increase the wind loading on the roof. [7] The line on the ground under the outer edge of the eaves is the eavesdrip, or dripline, and in typical building planning regulations defines the extent of the building and cannot oversail the property boundary.
A roof must be designed with a suitable fall to allow the rainwater to discharge. The water drains into a gutter that is fed into a downpipe. A flat roof should have a watertight surface with a minimum finished fall of 1 in 80. They can drain internally or to an eaves gutter, which has a minimum 1 in 360 fall towards the downpipe.
This means a roof coating actually becomes the top layer of a composite roof membrane and underlying system. As such, the roof coating is the topmost layer of protection for the membrane, receiving the impact of sunlight (both infrared and ultraviolet (UV)), rain, hail and physical damage. Roof Coatings should not be confused with deck coatings.
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.
Cross hipped: The result of joining two or more hip roof sections together, forming a T or L shape for the simplest forms, or any number of more complex shapes. Satari: A Swedish variant on the monitor roof; a double hip roof with a short vertical wall usually with small windows, popular from the 17th century on formal buildings.
In architecture, a hood mould, hood, label mould (from Latin labia, lip), drip mould or dripstone [1] is an external moulded projection from a wall over an opening to throw off rainwater, historically often in form of a pediment. This moulding can be terminated at the side by ornamentation called a label stop.
A warm roof is a roof that is not ventilated, [9] where the insulation is placed in line with the roof pitch. [10] A hot roof is a roof designed not to have any ventilation and has enough air-impermeable insulation in contact with the sheathing to prevent condensation [ 11 ] such as when spray foam insulation is applied directly to the under ...