Woven Valley - Method of valley construction in which shingles from both sides of the valley extend across the valley and are woven together by overlapping alternate courses as they are applied. The valley flashing is not exposed.

WALKWAYS - Designated areas for foot traffic.

WATER-CEMENT RATIO - The strength of a concrete mixture depends on the water cement ratio. The water and cement form a paste. If the paste is made with more water, the concrete becomes weaker. Traditionally, concrete mixes have been identified in terms of the ratio of cement to fine aggregate to coarse aggregate. For example, the ratio 1:2:4 refers to a mix which consists of 1 cu. ft. of cement, 2 cu. ft. of sand and 4 cu. ft. of gravel. Cement and water are the two chemically active elements in concrete and when combined, form a paste or glue which coats and surrounds the particles of aggregate and upon hardening binds the entire mass together.

WATERPROOFING – Type of work done by PROOFROCK WATERPROOFING SYSTEMS; also the process where a building component is made totally resistant to the passage of water and/or water vapor.

WATER REPELLANT COATING – Transparent coating or sealer applied to the surface of concrete and masonry surfaces to repel water.

WATER VAPOR - Moisture existing as a gas in air.

WATTAGE - The electrical unit of power. KILOWATTS is 1000 watts and electric customers are billed on how many kilowatts of power they have used.

WEEP HOLE - A hole which allows for drainage of entrapped water from masonry or glazing structures.

WEEP SCREED – Tool used to drain moisture from concrete.

WELD - The joining of components together by fusing. In thermoplastics, refers to bonding together of the membrane using heat or solvents.

WET SEAL – Application of an elastomeric sealant between the glass and sash to form a weather tight seal.

WIND UPLIFT - The upward force exerted by wind traveling across a roof.

WIRE SIZE - Conductors for building wiring are available in AWG (American Wire Gauge) sizes ranging from No. 14 to 4/0. The larger the number size, the smaller the diameter. For example #10 is smaller than #8. The larger the diameter of a wire, the lesser the resistance.

WOOD FIBER PLASTER - Consists of calcified gypsum integrally mixed with selected coarse cellulose fibers which provide bulk and greater coverage. It is formulated to produce high-strength base coats for use in highly fire-resistant ceiling assemblies.

WORK LIFE – The time during which a curing sealant (usually two compounds) remains suitable for use after being mixed with a catalyst.

WALKWAYS - Designated areas for foot traffic on roofs.

WATER STOP - A device designed to protect the exposed edge of a partially installed BURM from water entrance.

WATERPROOFING - The process where a building component is made totally resistant to the passage of water and/or water vapor.

WATER VAPOR - Moisture existing as a gas in air.

WEEP HOLE - A hole which allows for drainage of entrapped water from masonry structures.

WELD - The joining of components together by fusing. In thermoplastics, refers to bonding together of the membrane using heat or solvents.

WIND UPLIFT - The upward force exerted by wind traveling across a roof.

WRINKLE - A raised pattern of ridges running in a random fashion in a BUR.