CODE: UXHP 4516REVISION DATE: 20.12.16

DESCRIPTIONCombi-Seal is a factory produced combinationof Premcrete Maxiprufe Plus and Premcrete Hydroprufe 9000. The resulting formulation is a light-weight pre-applied, self-healing, gas resistant membrane which utilises Premcrete APANTM technology to resist a hydrostatic head of water pressure. The reinforced polyethylene layer is reinforced with a 12 micron aluminium foil core to restrict the gas vapour transmission rate to less than 40ml/day/M2 in accordance with BS 8485:2015. The self healing properties of the hydrophilic, water reactive polymers secure the integrity of the membrane, producing a membrane which is unaffected by the presence of contaminants in the groundwater. Combi-Seal fully complies with BS8485:2015 and BS8102:2009 to provide complete protection against Carbon Dioxide, Radon and Methane as well as hydrostatic water pressure.

USESCombi-Seal is satisfactory for use as a pre-applied waterproofing and gas-proofing membrane for Type A basement constructions, grades up to and including Grade 3 as defined in Table 1 of BS 8102:2009. It provides a gas and waterproof membrane in the construction of sub-structures providing protection against hydrostatic water pressure and ground gases. Combi-Seal is also satisfactory for use at ground level as a loose laid gas membrane and acheives 2 points when correctly installed in accordance with Table 7 of BS8485:2015.

ADVANTAGES• Lightweight but robust membrane provides

easy handling on site• Easily installed by semi-skilled labour• High tear resistant• Self-healing in the event of puncture• Forms strong adhesive bond to concrete

Combi SealHigh Performance Gas Resistant Waterproof Membrane

The information provided in this data sheet is intended for general guidance only and is given in good faith based on Premcrete’s current knowledge and experience. No warranty in respect of fitness for a purpose, or any other liability whatsoever can be inferred from the information contained within this datasheet. Users should determine the suitability of the materials for

their particular application and should always refer to the most recent issue of the product data sheet for the product concerned. All materials are supplied in accordance with Premcrete Sales Terms & Conditions (available upon request)

26 Whitehall Road Leeds West Yorkshire LS12 1BET: +44 (0) 800 619 1619 E: sales@premcrete.com W: www.premcrete.com

Property Test methods

Weight DIN EN 1849-2

Thickness (20 kPa) DIN EN 1849-2

Maximum Tensile MD Maximum Tensile CD

DIN EN ISO 12311-2 DIN EN ISO 12311-2

Elongation at break MDElongation at break CD

DIN EN ISO 12311-2 DIN EN ISO 12311-2

Tear Resistance MD (nail shank) DIN EN 12310-1

Tear Resistance CD (nail shank) DIN EN 12310-1

Water Tightness DIN EN 1928 B

Resistance to impact DIN EN 12691

Moisture/Vapour Transmission Rate

Methane Permeability(ISO 15105-1)

TYPICAL PROPERTIES

Combi Seal

CODE: UXHP 4516REVISION DATE: 20.12.16

Value Tolerance

900G/M2 450 - 620

3mm +- 1,0

600N/5cm1100N/5cm

>550>900

90%80%

>70>55

500N >280

454N >280

PASS

PASS

<0.01g/M2/24Hr

<0.1ml/Day/M2

COMPLIANCE

BDA Agrément® BAB 17-061/01/A

PROCEDURESurface Preparation: The substrate should be well compacted or blinded with lean-mix concrete with the surface free from any excessive undulation or sharp projections. Irregularities in the surface should be filled with a repair mortar or Twinseal Compound. Any other defects in the substrate should be repaired using a suitable Premcrete repair product.

Application to Horizontal Surfaces: Combi-Seal should be laid with the white fleece to be directly in contact with the concrete that forms the structure. Adjoining sheets should be lapped by a minimum of 150mm and taped using Combi-Tape. it is recommended to stagger the lap joints by 300mm to avoid four sheets lapping at one locations. Laps may be stapled to prevent displacement during the pouring of concrete. It is possible to weld the joints of Combi-Seal, for further information contact the Premcrete Technical department.

REGULATIONS COMPATIBILITY TABLE

CIRIA 665 Characteristic

Situation 2

Methane =

Carbon Dioxide

=

Radon N/A

CIRIA 665 Characteristic

Section 3-6

BS8485 Characteristic

Section 2

= =

= =

N/A N/A

BS8485 Characteristic

Section 3-6

BRE 211 Radon

= N/A

= N/A

N/A /

NHBC Amber

1

NHBC Amber

2

= =

= =

N/A N/A

Application to Vertical Surfaces: Combi-Seal should ideally be pre-applied to the inside face of the shuttering to be subsequently filled with concrete. The sheets should be installed with the white fleece in contact with the concrete and aligned vertically ensuring that all lap joints face down, away from the concrete pour. The laps must be taped with Combi-Tape. The membrane will then remain adhered to the concrete when the shutter is removed. The membrane should be protected during backfill to ensure it is not punctured. Backfill material should be free from builder’s debris and angular aggregate and should be compacted to a minimum 85% Modified Proctor. Combi-Seal should not be installed above intended final ground level.

Alternatively Combi-Seal may be applied directly to foundation piles once they have been correctly prepared and excessive surface irregularities have been removed.

The information provided in this data sheet is intended for general guidance only and is given in good faith based on Premcrete’s current knowledge and experience. No warranty in respect of fitness for a purpose, or any other liability whatsoever can be inferred from the information contained within this datasheet. Users should determine the suitability of the materials for

their particular application and should always refer to the most recent issue of the product data sheet for the product concerned. All materials are supplied in accordance with Premcrete Sales Terms & Conditions (available upon request)

26 Whitehall Road Leeds West Yorkshire LS12 1BET: +44 (0) 800 619 1619 E: sales@premcrete.com W: www.premcrete.com

Concrete is then poured directly against the membrane. In this instance the membrane at the corner junction between the concrete pile and the blinding beneath the floor slab requires careful detailing using Twinseal Compound to ensure integrity of the joint.

ANCILLARY PRODUCTSCombi-TapeTwinseal CompoundMaxiprufe Metal Washer Fixings Hydroseal FXHydrostop BRHydrostop WS10Hydrostop WSM Cemflex VBHydrobar PVC

PACKAGING Roll Dimensions: 2 x 25 M Roll Weight: 50 Kg Pallet Quantity: 5 rolls.

STORAGE Store in cool, dry, frost-free conditions. The membrane should be protected against UV.

HEALTH & SAFETYPlease refer to seperate Material Safety Datasheets.

The information provided in this data sheet is intended for general guidance only and is given in good faith based on Premcrete’s current knowledge and experience. No warranty in respect of fitness for a purpose, or any other liability whatsoever can be inferred from the information contained within this datasheet. Users should determine the suitability of the materials for their particular application and should always refer to the most recent issue of the product data sheet for the product concerned. All materials are supplied in accordance with Premcrete Sales Terms & Conditions (available upon request)

Seymour House, Mayflower Close, Eastleigh, Hampshire, SO53 4ART: +44 (0) 800 619 1619 E: sales@premcrete.com W: www.premcrete.com