Alkreflex® Roof 1.7
Alkreflex® Roof 1.7 is a multi-layer insulating breathable membrane. It is waterproof, breathable, insulating and space-saving. Extremely suitable for application where adjustments of gutter and fascia due to the thickness may not or hardly be adjusted, such as with monuments or terraced houses. Alkreflex® Roof 1.7 consists of a core of high density wool sealed by two vapour permeable membranes. The bottom layer contributes to the overall thermal resistance of the structure through reflection of thermal radiation (infrared). Alkreflex® Roof 1.7 contains no stitching which prevents air or moisture leaks. Alkreflex® Roof 1.7 is an efficient and effective insulation solution with low space loss.
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Alkreflex® Roof 1.7
Alkreflex® Roof 1.7 is a multi-layer insulating breathable membrane. It is waterproof, breathable, insulating and space-saving. Extremely suitable for application where adjustments of gutter and fascia due to the thickness may not or hardly be adjusted, such as with monuments or terraced houses. Alkreflex® Roof 1.7 consists of a core of high density wool sealed by two vapour permeable membranes. The bottom layer contributes to the overall thermal resistance of the structure through reflection of thermal radiation (infrared). Alkreflex® Roof 1.7 contains no stitching which prevents air or moisture leaks. Alkreflex® Roof 1.7 is an efficient and effective insulation solution with low space loss.
1.20 x 10 m Article No. 8413012000
Applications
Alkreflex® Roof 1.7 is to be applied as a breathable and waterproof layer on the cold side of the construction. The waterproofing layer should face outward. For optimal results, it is recommended that the reflective layer be kept at least 20 mm clear of the substrate. Alkreflex® Roof 1.7 can be used in both new construction and renovation work in facade and roof constructions.
Installation
Alkreflex® 1.7 must be installed horizontally and in a shingle fashion. Alkreflex® 1.7 is equipped with an overlap flap for excellent drainage without build-up of thickness. Tape the overlaps along the entire length with VASTR® non-woven tape for an air and watertight finish. The material should be fastened between battens. For optimal reflection, it is recommended to maintain an air cavity of at least 20 mm on the aluminium reflection side.
Advantages
Vapor-open
Waterproof
R-value of 1.7m 2 K/W when an air layer and transitional resistances are applied
Requires minimum space
Airtight insulation
Energy saving
Insulating
Foil and insulation, 2 in 1
Foil flap provides quick waterproofing without thickness buildup
Specifications
Weight 1040 gr /m²
Fire class E
Water tightness W1
Water vapour resistance Sd 0.068 m
Water vapour transmission 300 g / m² / day
Tensile strength machine direction minimum 400N / 50 mm
Tensile strength cross direction minimum 400N / 50 mm
Temperature resistance -20°C / +80°C
