HPDE Sheet Waterproofing

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Specification Details

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2
Dimensions
8.5" x 11"
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07 13 54
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Use this 3-part SimpleSpecs specification template to specify HDPE sheet waterproofing for use on below-grade walls and slabs.

Waterproofing is an essential aspect of construction, particularly for structures that are exposed to moisture or water. Whether it is a roof, basement, or foundation, waterproofing protects the structure from damage and deterioration caused by water. There are several methods of waterproofing, and one of the most popular is HDPE sheet waterproofing. In this blog post, we will explore what HDPE sheet waterproofing is and how it differs from other popular waterproofing methods such as bituminous and bentonite waterproofing.

HDPE

A method that involves the use of high-density polyethylene sheets to create a waterproof barrier. The HDPE sheets are applied to the surface to be waterproofed, and they are anchored or sealed to prevent water from penetrating the surface. The sheets are available in different sizes and thicknesses, making them suitable for various applications. HDPE sheet waterproofing is a popular choice for flat roofs, foundations, and basements, as it is relatively easy to install and provides long-lasting protection against water intrusion.

One of the significant advantages of HDPE sheet waterproofing is its resistance to chemical and environmental factors that can cause damage to other types of waterproofing materials. HDPE sheets are also resistant to ultraviolet rays, making them an ideal choice for outdoor applications.

vs. Bituminous

Is a traditional method of waterproofing that involves the use of asphalt or coal-tar pitch. The asphalt or tar is applied as a liquid to the surface to be waterproofed and then allowed to cool and solidify. This creates a waterproof barrier that protects the surface from water intrusion. Bituminous waterproofing is commonly used in roofing applications, and it provides excellent protection against water penetration.

One of the primary advantages of bituminous waterproofing is its durability. It can withstand extreme temperatures, making it ideal for use in areas with harsh weather conditions. However, bituminous waterproofing can be challenging to apply, and it requires professional installation to ensure proper adhesion and sealing.

vs. Bentonite

Is another popular method of waterproofing that uses sodium bentonite clay to create a waterproof barrier. The clay is applied to the surface as a slurry, and it then dries to form a solid barrier that prevents water from penetrating the surface. Bentonite waterproofing is commonly used in foundation walls and basement floors, as it provides excellent protection against water intrusion.

One of the primary advantages of bentonite waterproofing is its ability to self-heal. When the clay comes into contact with water, it swells, filling any cracks or gaps in the barrier. This makes it an ideal choice for areas that are prone to settling or movement.

Notes:

HDPE sheet waterproofing is a self-adhering product consisting of an HDPE sheet with either bentonite or rubberized asphalt waterproofing that can be installed in one of two ways:

  • Applied to excavations or lagging systems in blindside (pre-applied) installations, prior to placement of concrete for below-grade walls.
  • Applied to interior of below-grade concrete or masonry surfaces (post-applied installation).

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