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Premcrete Hydroflow HP - HDPE Drainage Membrane

Verified by manufacturer 6 months ago

Premcrete Hydroflow HP8

Premcrete Variant:

Cavity drain membrane system.

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Application

HYDROFLOW HP should be fixed to the wall or to the vertical face using HYDROFLOW QS PLUGS at 600 mm fixing centres. The membrane should be drilled using an 11 mm diameter masonry drill and HYDROFLOW QS PLUGS should be hammered into the hole to secure the membrane. The selvedge, along the length of the HYDROFLOW HP8, should lap onto the adjacent sheet and is sealed using HYDROFLOW BUTYL TAPE.

Once the HYDROFLOW HP8 has been installed to the vertical walls then installation of the HYDROFLOW HP20 floor membrane should commence. HYDROFLOW BUTYL TAPE should be applied between first and second row of cuspates. The adjacent sheet should then interlock by two cuspates with the HYDROFLOW BUTYL TAPE forming an effective seal between the two sheets.

The junction between the wall and floor membrane should be taped using HYDROFLOW CORNER TAPE. The same tape should also be used to effectively seal where the membrane may terminate such as at the soffit junction.

Description

HYDROFLOW HP is a cuspated HDPE drainage membrane suitable for installation on internal walls and floors. It is designed to provide a free-draining void for the collection and control of water that permeates through a concrete or masonry sub-structure. The void created by the cuspated sheet allows the water to free flow to a drainage channel or sump.


HYDROFLOW HP is available in two thicknesses. The 8 mm-thick membrane is typically used for application to vertical substrates or for the control of light water ingress. The 20 mm membrane is typically used for application to horizontal or floor constructions or where the control of higher volumes of water ingress is a consideration.

General information

Color

Black

Finish

Eggshell

Material

High density polyethylene (HDPE)

Shape

Rectangle

Length

Bespoke

Width

Bespoke

Height

8 mm

20 mm

Manufacturer guidance

Stud height.

Warranty description

25 year

Uniclass

Pr_25_57_51_36 High-density polyethylene (PE-HD) studded sheetsPrimary

CAWS

J40/290 High-density polyethylene/ polypropylene studded cavity drain membrane

Product range

Drainage Membranes

Specification data - High-density polyethylene (PE-HD) studded sheets

Standard

BS 8102: 2009 Grade 3.

Third-party certification

British Board of Agrément Certificate: 12/4948.

Stud height

8 mm.

Weight (minimum)

500 g/m².

Colour

Black.

Performance characteristics

-

Water storage capacity

5.3 L/m².

Studded layer

High-density polyethylene (HDPE).

CompressiveStrength

200 kN/m².

Literature

Hydroflow HP TDS

Hydroflow HP TDS

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