Visqueen Ultimate HC BLOK 2.44m x 41m x 0.5mm RS058032

Product Overview:

Visqueen Ultimate HC Blok is a 0.5mm thick, chemically resistant co-extruded volatile organic compound barrier and gas barrier. It is coloured gold on the upper surface and white on the reverse. The product is supplied in single wound rolls (not folded), 2.44m x 41m.

Features & benefits

• Agrement certified - third party accreditation
• Complies with NHBC Foundation’s NF94 guidance for use in Type A and Type B membrane locations
• Complies with CIRIA C748:2014 - industry standard for volatile organic compounds (VOC) protection
• Complies with the methane gas transmission rate, mass per unit area and thickness requirements of BS 8485:2015 + A1:2019 - industry standard for methane and carbon dioxide protection
• Flexible - easy to detail and install on site
• Multi functional - also acts as a radon and damp proof membrane
• Dual jointing methods - lap joints can be taped or heat welded

Usage

• Visqueen Ultimate HC Blok is suitable for use in all types of buildings to prevent the ingress of harmful levels of volatile organic compounds (VOCs), methane, carbon dioxide and radon. The barrier can be positioned above or below a concrete ground foor slab or above a precast suspended segmental ground foor system, e.g. beam and block foor.
• The barrier also acts as a damp proof membrane.
• Radon, carbon dioxide, methane, and VOC protection – NHBC NF94 guidance: Visqueen Ultimate HC Blok when installed with either taped or welded joints (welded only for VOC protection) complies with NHBC Foundation’s NF94 publication, Hazardous ground gas - an essential guide for housebuilders, in Type A membrane locations in precast suspended segmental subfoors and reinforced cast in situ concrete foor slabs (ground bearing, suspended or raft).
• Visqueen Ultimate HC Blok also complies with this guidance when installed with welded joints in Type B membrane locations in reinforced cast in situ concrete foor slabs (ground bearing, suspended or raft). For site or zone characteristic gas situations of CS4 and above, contact Visqueen Technical Services.
• The product is not intended for use where there is a risk of hydrostatic pressure.