Wall System 2 (Mineral), comprising mechanically-fixed enhanced expanded polystyrene (EPS) insulation boards, with a reinforced basecoat and render finishes.
Mineral wool slabs, 30–200 mm thick., Expanded polystyrene (EPS) boards, 30–200 mm thick., Phenolic foam boards, 20–120 mm thick.
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Adhesive
Envirobed adhesive.
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Additional mechanical fixings
Exact type and length to be determined by system and substrate.
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Fire barriers and stops
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Material
Mineral wool fire break., Not required.
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Fixings
For application to second storey walls and above, it is recommended that the designer considers at least one stainless steel fixing per m2 and fire barriers in line with compartment walls and floors as advised in BRE Report BR 135 :2013.
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Beads and trims
Not required., Powder-coated galvanized steel with PVC nose., Stainless steel variant., PVC clip-on starter track beads., Window frame seal beads., Stop beads.
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Movement joints
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Form with
Movement joints (V and E version).
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Sealant
Designers and installers should take particular care in detailing around openings, penetrations and movement joints to minimize the risk of water ingress.
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Accessories
Generally, movement joints are not required in the system but, if an expansion joint is already incorporated in the substrate, a movement joint must be made through the insulation system.
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Render carrier or reinforcement
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Material
Retrobase base coat/ glassfibre reinforcement mesh.