DAMPFIX^® 1K

Bostik Dampfix 1K is a one-component, fibre-reinforced cementitious waterproofing membrane mixed with water, formulated to protect internal wet areas, external balconies, rooftops, podium decks, planter boxes, retaining walls and swimming pools. Its standout benefit is that it withstands both positive and negative hydrostatic pressure to 50 metres, making it the go-to for below-ground and retaining structures.
It's rated Class 1 for low extensibility under AS 4654.1 and AS/NZS 4858, and it's a trusted choice among waterproofers for planter box, retaining wall and swimming pool waterproofing where resisting structural, below-ground water pressure matters most.

Why choose Dampfix 1K?
Dampfix 1K is fast-drying (recoat in 1 to 2 hours per coat), potable-water certified (SAI0205/2018), and is Class 1 rated under AS 4654.1 and AS/NZS 4858. It withstands hydrostatic pressure to 50 metres in both directions, and is made in Australia. 

Where to use it
Dampfix 1K protects concrete, cement-rendered masonry, FC sheeting, water-resistant plasterboard and structural plywood (Type A Stamped). It's applied by brush, roller, trowel or spray , with Ultra Multiprime A530 recommended as a primer on porous substrates.
It must not be applied directly onto standing water, contaminated, or friable substrates.

TIP: Don't need negative hydrostatic pressure resistance, just a fast, general-purpose membrane? Reach for Bostik Dampfix Platinum - the rapid-drying, all-in-one liquid choice for everyday wet area jobs.