Underseal® CRM™
| Underseal® CRM™ - Chemical Resistant Membrane - is a strong, 85-mil, robust pre-applied membrane that has been designed and tested to withstand elevated concentrations of soil, water and vapor contaminants. When installed below the slab and behind vertical walls, Underseal® CRM™ creates a barrier preventing water & vapor from transmitting into the structure. Underseal® CRM™ provides a continuous seal underneath the concrete slab and behind vertical “blindside” cast in place concrete walls. A strong mechanical bond is developed between the membrane and concrete at the time of pouring as the concrete intermingles with the fibers of the nonwoven geotextile fabric. Underseal® CRM™ is typically installed horizontally over a prepared subbase such as compacted soil, mud slab or #57 stone. It can also be used in vertical applications. |
Features & Benefits
Lasting Durability: Tough 3-layer composite membrane - Technology that has stood the test of time.
Outstanding Puncture Resistance: 2 times higher than the new AC 527 requirement - Better protection against backfill damage.
Strong Mechanical Bond: Our inner fiberous layer embeds itself into the cured concrete creating a very strong mechanical bond - ensures our waterproofing system will stay in place as the building and outside soil moves during the building's lifetime.
Resistant to Water Migration: An adhesive bond is created when heat from the concrete slab while curing , causes our compound to melt onto the concrete's positive side surface creating a continuous sealed structure.
Jobsite Adaptability: Flexible material that adapts to job site irregularities for ease of installation.
Superior Joints: Strong laps seams create a long lasting, water tight system - Outperforms the new AC 527 standard (ASTM 1876) by more than 150%.
Crack Protection: Underslab is thicker than most competitive products giving it stress-absorbing and elongation properties that maintain a watertight seal if cracks develop in the base material or the slab.
Helps Manage Harmful Gases : Acts as a barrier against toxic contaminants methane and radon gas, which may attempt to enter the structure through cracks in the concrete.
Product Details
Underseal CRM - Detail Set (CRH1-21)
Underseal CRM - Detail - Pre Applied Seal Of A Vertical Leg Turned Up From CRM Membrane End Lap (CRH17)
Underseal CRM - Detail Set (CRV1-16)
Underseal CRM - Detail - CRM Membrane Tie In To Ultra CRM Membrane At Outside Corner (CRV14)
