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Exterior Foundation Waterproofing Membrane

Exterior Foundation Waterproofing Membrane

An exterior foundation waterproofing membrane is a special type of membrane that is designed to prevent water from entering a building's foundation. It is typically made from a high-density polyethylene (HDPE) material that is strong, durable, and resistant to punctures and tears. The membrane is applied to the outside of the foundation walls before backfilling, providing a barrier between the soil and the foundation. It works by directing moisture away from the foundation walls and preventing it from penetrating into the building's interior.

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Product Introduction

Product Description

The membrane is applied to the outside of the foundation walls before backfilling, providing a barrier between the soil and the foundation. It works by directing moisture away from the foundation walls and preventing it from penetrating into the building's interior.

Advantages over Other Membranes

Compared to other types of waterproofing membranes, HDPE offers several advantages. First and foremost, it is environmentally friendly and poses no risk to humans or the ecosystem. Unlike some other materials that require solvents or flame to install, HDPE can be installed using a heat welding process, which is safer and less harmful.

Another advantage is that HDPE is extremely durable and long-lasting. It is able to withstand harsh weather conditions, including extreme temperatures and UV radiation, without deteriorating or degrading. This means that it can provide reliable protection for many years, with minimal maintenance.

Additionally, HDPE is able to resist root penetration, making it an ideal solution for properties with trees or shrubs planted near the foundation. These plants can cause damage to the foundation over time, but a high-quality HDPE membrane can prevent this from occurring.

Specification

Length	HDPE Thickness	Membrane Thickness
1m/2m	0.8mm/1.0mm	1.2mm/1.5mm

Construction Method

The installation of an exterior foundation waterproofing membrane typically involves the following steps:

1. Excavation: The soil around the foundation walls is excavated down to the footing level.

2. Cleaning: The foundation walls are thoroughly cleaned and inspected for cracks or other damage.

3. Membrane Application: The HDPE membrane is applied to the foundation walls using heat welding.

4. Protection Board: A protective board is installed over the membrane to prevent it from being punctured or damaged during backfilling.

5. Backfill: The soil is backfilled, compacted, and graded to provide proper drainage away from the foundation.

Technical Data

No.	Test Item	Test Method	Result		Conclusion
1	Peel Strength	ASTM D903-98(2017)	0.201kgf/mm		Pass
2	Puncture Resistance	ASTM E154/E154M-08a(2013) Section 10	995N		Pass
3	Tear Strength	ASTM D624-00(2012)	Transverse	77.1kN/m	Pass
			Lengthways	77.6kN/m
4	Tensile Strength	ASTM D882-12	Transverse	24.5Mpa	Pass
			Lengthways	24.8Mpa
	Elongation at break		Transverse	935%	Pass
			Lengthways	930%
5	Tensile Strength	ASTM D412-16 Method A	Transverse	25.6Mpa	Pass
			Lengthways	26.2Mpa
	Elongation at break		Transverse	860%
			Lengthways	800%

Conclusion

Protecting your foundation is critical to maintaining the integrity and value of your property. An exterior foundation waterproofing membrane made from HDPE can provide reliable, long-lasting protection against the damaging effects of groundwater and soil moisture. With its many advantages over other types of membranes, it is a wise investment for any homeowner.

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