HydroBond 402-CCSM is a high performance membrane for the external waterproofing of below-ground foundation structures, basements, water holding tanks, culverts and tunnel bases. Pliable and durable, the membrane negates the requirements for a smooth blinding and protection boards when used as a ground level radon DPM.
 
A composite of LDPE and a non-woven geotextile fleece, the membrane has excellent crack-bridging capabilities at places where cracks occur within the concrete. When pre-applied before the concrete, the wet concrete is absorbed into the fleece, integrally bonding it to the membrane. This results in a high-strength bond with exceptional peel adhesion qualities, preventing water migration between the concrete and the membrane, even when damaged.
 
HydroBond 402-CCSM can also be post-applied to the wall surface, and can be used alongside other Newton products to provide a coordinated and combined approach to the waterproofing of the whole structure that includes protection against water penetrating through construction joints, through and around service entries and to movement joints.
 
Key Benefits
 
Full mechanical bond to the concrete prevents water migration between membrane and structure
Very flexible – Resistant to movement and fissures in substrates
Unique pre-installed dual component (chemical fusion bond) adhesive laps at membrane selvedge
 
Typical Applications
 
As a continuous Type A, externally applied waterproofing membrane and radon barrier to earth-retained structures
Below slab DPM and Radon DPM without the need for smooth blinding and protection
 
Suitable Substrate
 
RAFT OR SLAB
 
Concrete blinding
Compacted type 1 hardcore
Compacted sand
 
The following can be placed above the blinding or hardcore prior to the installation of 402-CCSM:
 
Void former
Clay heave board
Closed-cell flooring grade insulation
HydroBond 410 GeoDrain
 
WALL FORMWORK
 
Existing structure
Secant or contiguous concrete piles
Metal sheet piles
Diaphragm walls
King post wall
Sufficiently stable ground such as clay or chalk
Temporary timber shuttering/formwork