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Waterproof decks – surface needs cleaning

Waterproof decks – water ponding

Waterproof decks – blocked drainage outlets

  • Debris obstructs water flow

    How to repair

  • The drainage outlet is not large enough for the volume of water the deck/balcony receives

    How to repair

Waterproof decks – water leaking into the house

  • The threshold from the house down to the waterproof deck or balcony is not deep enough

    How to repair

  • The deck membrane is not turned up enough (150 mm minimum) behind the bottom of wall and solid barrier cladding 

    How to repair

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Waterproof decks – deterioration under cantilevered balcony

Waterproof decks – impact or puncture damage

Waterproof decks – surface cracking, blistering, buckling or crazing

Waterproof decks – the deck is springy

  • There is damage to the substrate and/or framing due to water entry through the membrane or through adjacent wall claddings 

    How to repair

  • The substrate material is not thick enough to span the rafters/joists

    How to repair

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Waterproof decks – seam separation or failure

Waterproof decks – popped nails in substrate

Waterproof decks – bubbles under the membrane

  • Poor adhesion of the membrane to the substrate

    How to repair

  • Glue misses (the membrane was never fully adhered when installed)

    How to repair

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Waterproof decks – deteriorated patching

  • Incompatible patching material was used – for example,  rubber membrane was used to patch a bitumen-impregnated membrane

    How to repair