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wall covering
Any material used on a wall surface as a finish.
warping
The change of a surface; wall, floor, ceiling, etc. from its
original shape due to water, moisture or heat.
waste water
Spent water from a residential, commercial, industrial facility.
water mark
A stain on any material caused by water.
water analysis
The testing and analyzing of a waters content for bacteria and
chemicals.
Water Loss Institute
WLI, division of the ASCR International.
water migration
The action of water to move in and out of a materials capillaries.
weak acid
An acid that is not fully associated in aqueous solutions.
weathering
The actions of the weather to change the texture, color, strength
and composition of a material and its finish.
weep hole
A small hole as designed within a system or a post-penetration in a
system to drain or relieve water.
wet bulb temperature
The temperature reading using a thermometer having a moist sock
covering, the temperature where secondary damages will occur.
wicking
The evaporation of moisture or liquid from porous materials, as
induced through equilibrium or as forced using air movers.
winterize
The process of protecting a building from freezing when the primary
heat source is not in commission.
work authorization
A document as signed by both parties directing the contractor to
perform its work, which also includes payment terms.
work order
A written directive to a contractor, subcontractor or employee
authorizing the work to proceed with a start and completion date.
wrinkling
The distortion or rippling of a surface.
