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Below-Grade Solutions
Below-Grade Solutions

Underground waterproofing lays the foundational safeguard for all civil construction; improper material selection or careless on-site work easily triggers groundwater seepage, structural corrosion and costly long-term repairs, demanding enduring durability, robust environmental resistance, efficient construction and eco-friendly low-carbon performance.

Below-Grade Solutions
PMH-3040 Plus
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YUHONG PMH-3040 Plus pre-applied HDPE composite waterproof membrane forms an integral tight bond with cast concrete to block water lateral migration, featuring high puncture resistance, chemical/gas resistance and all-weather constructability for all below-grade basement, tunnel and underground infrastructure waterproofing.
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Application Fields
All below-grade underground structures: basement slabs & exterior walls, tunnels, subways, municipal integrated pipe corridors.
Cavern projects, permanent & removable concrete formwork systems.
Nuclear facilities, underground utility spaces, underground planting green roof base layers.
Civil, commercial & large infrastructure underground waterproofing new build & renovation.
Advantages

Composite HDPE structure with thick core film + pressure-sensitive adhesive + UV protective top layer, forms full integral bond with post-cast concrete.

Zero lateral water migration; blocks water, moisture and harmful gas penetration permanently.

Outstanding mechanical performance: high tensile strength (28 MPa), 500% elongation, superior puncture resistance (1000 N).

Excellent chemical & corrosion resistance: withstands soil sulfate, chloride, methane and radon gas erosion.

Stable under ground settlement; flexible at -29°C without cracking.

All-weather construction tolerates damp substrates; walkable right after laying, no separate protective concrete layer needed.

Cold-applied without open flame, fast installation to shorten construction schedules.

Integrated matched auxiliary tapes, sealants and coatings for seamless sealing around pipe penetrations, piles and wall terminations.

High hydrostatic resistance up to 71 meters, meets long-term structural design lifespan.

Low water absorption, ultra-low vapor permeability, long-term underground durability.

Multiple customizable roll sizes (1.2m width, 1.2/1.5mm thickness, 30m length) for flexible project layout.

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