BASF MasterProtect 1000
MasterProtect 1000 (Master Builders Solutions, formerly BASF) is a single-component, water-based, flexible acrylic anti-carbonation coating for the protective coating of exposed concrete elements. The product is classified under EN 1504-2 as a coating providing principles 1 (protection against ingress) and 8 (increasing resistivity by limiting moisture content). MasterProtect 1000 is supplied as a ready-to-use liquid in 15 L pails, applied by brush, roller or airless spray in two coats over a primer (typically MasterProtect P or equivalent). The cured coating provides a low-permeability, high-elasticity barrier that significantly reduces CO2 ingress and thus carbonation propagation into the concrete substrate, while accommodating substrate movement (crack-bridging up to approximately 0.3 mm). TRSC specifies MasterProtect 1000 as a finishing coat over completed concrete repair on facade remediation projects, and as a stand-alone protective intervention on structurally-sound concrete elements where investigation has identified surface carbonation as the primary durability concern. The coating extends the residual design life of the substrate by interrupting the carbonation propagation mechanism, which is consistently a more cost-effective intervention than full cover replacement when carbonation depth is the controlling deterioration mechanism.
MasterProtect 1000 is the default anti-carbonation coating in TRSC facade remediation specifications for the same engineering reason MonoTop-412 NFG is the default patch-repair mortar: it is a category-leading product, independently certified to EN 1504-2 for the relevant protection principles, with documented performance data that supports residual-life calculations. The product is selected over alternatives such as Sika Sikagard-670 W and Mapei Mapecoat ACT on three job profiles: (1) where the facade architectural finish requires the slight texture and matt sheen that MasterProtect 1000 provides (the alternatives are typically gloss or semi-gloss); (2) where the contractor's site preference is for a Master Builders Solutions supply chain (which typically locks in MasterEmaco repair mortars and MasterProtect coatings as a system); (3) where a 0.3 mm crack-bridging capacity is the engineering-required specification to accommodate substrate movement. The most common specification pitfalls TRSC encounters in the field are: (1) substrate preparation — MasterProtect 1000 requires a sound, clean, dry substrate at the time of priming; substrates that are visibly damp, contaminated with surface laitance or curing compound, or carrying surface efflorescence will not achieve the published bond strength and the coating will delaminate within 12-24 months; (2) primer selection — the coating must be applied over the manufacturer-specified primer (MasterProtect P or equivalent); contractors substituting a generic acrylic primer compromise the coating's adhesion to the substrate and the coating's published EN 1504-2 performance; (3) application rate — the coating's anti-carbonation performance is a function of the achieved dry-film thickness; TRSC specifications cite the dry-film thickness target (typically 200-250 microns over two coats) and require the contractor to verify with a dry-film thickness gauge at agreed inspection frequencies. The product was used as the system finishing coat on the 12 Creek Street facade remediation, providing extended carbonation protection over the discrete patch repairs and the surrounding cover-zone concrete in a single integrated specification.