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Application

Vertical application: The sheets should be installed with the white active fleece in contact with the freshly placed concrete and aligned vertically ensuring that all lap joints face down away from the concrete pour. Horizontal appliction: COMBI-SEAL should be laid with the white fleece facing the installer and in direct contact with the concrete. Adjoining lapse should be a minimum of 150mm and tapped using COMBI-SEAL TAPE or by making use of the selvedge (refer to above methodology) it is recommended to stager the lap joints by 300mm to avoid 4 sheets lapping at one location. 

Description

COMBI-SEAL is a cross-laminated, lightweight, pre-applied membrane which will resist ground gases and water. The membrane utilises PREMCRETE APAN™ technology to produce a membrane which will effectively resist water pressure and gases from within the ground.


General information

Color

Black

Finish

Matt

Material

Polyethylene

Shape

Rectangle

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

25 year

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

D21/350 Gas-retardant membrane

D21/38 Gas-retardant membranes

J40/120 Loose-laid plastics or rubber sheet damp-proofing

J40/130 Loose-laid plastics or rubber sheet oversite damp-proofing

J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes

J40/20 Loose-laid plastics or rubber sheet damp-proofing

J40/30 Loose-laid plastics or rubber sheet oversite damp-proofing

J40/35 Loose-laid plastics or rubber gas-retardant membranes

Product range

Gas Membranes

Specification data - Plastics sheets

Material

Polyethylene.

Purpose

Gas-resistant waterproof membrane.

Standard

BS 8485:2015, BS 8102:2009.

Third-party certification

KIWA BDA Certificate BABKIWA; BDA Certificate: BAB-20-143-P-UK-20-144-P-UK.

Performance characteristics

-

Tensile strength (minimum)

To DIN EN ISO 12311-2: Machine direction (MD): 600 N/5 cm; Cross direction (CD): 1100 N/5 cm.

Tear resistance

To DIN EN ISO 12310-1: Machine direction (MD): 500 N; Cross direction (CD): 454 N.

Elongation to break

To DIN EN ISO 12311-2: Machine direction (MD): 90%; Cross direction (CD): 80%.

Resistant to underground gases

Methane, carbon dioxide and radon.

Form

Reinforced with a 12 micron aluminium foil core.

Root inhibitor

Aluminium foil core.

Physical properties

-

Colour

Black.

Weight (minimum)

780 g/m².

Dimensions

-

Thickness (minimum)

3 mm.

Width (minimum)

2 m.

Roll length (minimum)

25 m.

Moisture vapour transmission rate

0.003 g/m²/day (to ISO 15106).

Methane permeability

14 ml/m²/day (to ISO 15105-1).

Carbon dioxide permeability

18 ml/m²/day (to ISO 15105-1).

Static load resistance

20 kg.

Watertightness

Pass (to DIN EN 1928 B).

Impact resistance

To DIN EN 12691: Pass.

Literature

Combi-Seal TDS

Combi-Seal TDS

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