Mass timber is at its most exposed between delivery and close-in.
Fortifier Ultra is a water-based elastomeric coating that shields CLT and other exposed timber through the construction phase. It forms a tough, flexible film that moves with the timber instead of fighting it, and it keeps moisture and site wear out of the wood.
Fortifier Ultra is a water-based elastomeric coating that shields CLT and other exposed timber through the construction phase. It forms a tough, flexible film that moves with the timber instead of fighting it, and it keeps moisture and site wear out of the wood.
Fortifier Ultra – Protection from weather, foot traffic, spills and trades.

Benefits
- Water-based elastomeric coating with low odour and water clean-up
- Contains anti-microbial/anti-bacterial capabilities.
- Flexible film, 250–320% elongation, that moves with the timber
- Self-priming straight onto bare timber, with no separate primer
- UV-Stable for protection against sun bleaching.
- Exterior-grade resin, suitable for interior and exterior use
- Two-coat system covering faces, joints and end grain
- 12 Month Warranty
- Vapour permeable
- Allow overcoating with most proprietary waterproofing and sealing coatings.


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