07 10 00 Dampproofing and Waterproofing

07 10 00 Dampproofing and Waterproofing

Product Spotlight: Duradek

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Duradek has been in the deck and balcony waterproofing industry since 1974. They pioneered the use of PVC membranes as an outdoor walking surface and were the first to have an approved single ply "walk on" roof membrane. Duradek membranes are the primary approved roofing materials on tens of thousands of roof decks throughout North America. From large condominium and townhouse complexes to single-family homes, Duradek is the choice of architects, builders, property managers, and homeowners who appreciate our attention to detail.

Bentonite Waterproofing

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Bentonite is a type of clay having the unusual characteristics of cohesion, binding, sealing, and thickening. It is usually gray in color and when processed has the consistency of fine powder, similar to cement or flour. When bentonite is installed below grade as a waterproofing membrane, it becomes hydrated with the moisture that is naturally present in the soil and forms an impermeable barrier that absorbs and expels water and most chemicals, such as acids and salts (sodium bentonite). Bentonite can expand and contract an infinite number of times and is capable of absorbing seven to 10 times its own weight in water, swelling up to 18 times its dry volume. However, for bentonite to function properly as a waterproofing barrier, it is extremely important that this barrier remain under a constant minimum pressure of 30 to 60 pounds per square foot (PSF).

Water Repellents

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This topic includes information related to water repellents used during construction. Water repellents resist moisture from penetrating exterior building surfaces such as masonry, concrete, stucco and other exterior siding materials. Water repellents are a fluid substance made from acrylic, silane, silicone, siloxane and stearate.

Sheet Metal Waterproofing

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This topic includes information related to sheet metal waterproofing installed during construction. Sheet metal waterproofing, commonly referred to as flashing, is an exposed continuous waterproofing formed of sheet metal (aluminum, copper, steel or zinc). Sheet metal waterproofing deflects or directs water from roofs and exterior walls, preventing water from entering a structure.

Sheet Waterproofing

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This topic includes information related to sheet waterproofing installed during construction. Sheet waterproofing materials prevent the passage of water. Sheet materials including bituminous, modified bituminous, elastomeric or thermoplastic. Sheets are attached or self-adhering.

Fluid-Applied Waterproofing

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This topic includes information related to fluid-applied waterproofing installed during construction. Fluid-applied waterproofing materials prevent the passage of water. Fluid-applied waterproofing materials are either hot fluid applied rubberized asphalt or cold fluid applied. Liquid is commonly applied in a viscous state to vertical walls beneath grade.

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