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Warm insulation side
Reflective membranes

Alkreflex 2L-2

Alkreflex® 2L-2 is a two-layered composite air-cushion membrane, which is finished with a layer of coated pure aluminium on both sides. Alkreflex® 2L-2 is a two-layered composite air-cushion membrane, which is finished with a layer of coated pure aluminium on both sides. When combined with an air cavity of 20 mm on both sides, Alkreflex® 2L-2 offers excellent insulation by reflecting heat radiation. The extra coating protects the aluminium against corrosion in alkaline surroundings (brickwork, cement and concrete).

Technische tekening Alkreflex 2L-2
Technische tekening Alkreflex 2L-2 - Vloer
alkreflex 2l-2
Technische tekening Alkreflex 2L-2
Technische tekening Alkreflex 2L-2 - Vloer
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Reflective membranes

Alkreflex 2L-2

Alkreflex® 2L-2 is a two-layered composite air-cushion membrane, which is finished with a layer of coated pure aluminium on both sides. Alkreflex® 2L-2 is a two-layered composite air-cushion membrane, which is finished with a layer of coated pure aluminium on both sides. When combined with an air cavity of 20 mm on both sides, Alkreflex® 2L-2 offers excellent insulation by reflecting heat radiation. The extra coating protects the aluminium against corrosion in alkaline surroundings (brickwork, cement and concrete).

1,20 x 25 m Article no. 5535012000
1,50 x 25 m Article no. 5535015000

Applications

Alkreflex® 2L-2 is used as a vapour barrier insulation in (cavity) walls, floors, the warm side (often the inner side) of roofs, industrial buildings like warehouses, units, containers and caravans. Alkreflex® 2L-2 is perfect for insulating crawl spaces. It is possible to realise a higher RC rating because heat flows in the correct direction.

Processing

To ensure effective insulation, the insulating properties of Alkreflex® 2L-2 must be maximised by using it in combination with two air layers (cavity) of at least 20 mm. In outer facades, the outer air layer must be lightly ventilated. When used as roof insulation, we recommend only using Alkreflex® 2L-2 on the inside of the roof. It will thus serve two functions: insulation and vapor barrier. Use TAFTEX® Alu tape to finish off joints and overlaps. When used as floor insulation, attach Alkreflex® 2L-2 to the underside of wood floor beams, whereby slight ventilation is realised along the beam. If implemented under concrete-like floors, Alkreflex® 2L-2 should be used with an air layer of minimum 20 mm between the insulation and the floor.

Benefits

Extremely vapour-proof

Two-sided reflection

Reduces energy consumption

Unaffected by humidity

Minimum loss of space

Reflects minimum 80% of heat outdoors in the summer

Membrane and insulation – 2-in-1

Easy to cut to size

Specifications

Weight 350 gr / m²

Fire class F

Water tightness W1

Water vapour resistance Sd >1500 m

Water vapour transmission < 0,015 g / m² / day

Tensile strength machine direction >175N / 50 mm

Tensile strength cross direction >110N / 50 mm

Elongation machine direction 150 %

Elongation cross direction 70 %

Tear resistance machine direction 120N

Tear resistance cross direction 145N

Temprature resistance -40°C / +70°C

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