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Key Features
hard-to-bond surfaces — concrete that's been sealed
Stair nosings are the safety-critical transition in any stair installation — they define the edge of each step
and color consistency
MBP - Multi-Surface Bonding Primer Size:1 Gal. Key FeaturesMortar Bond Primer (MBP) from Custom Building Products solves the adhesion problem on dense, hard to bond surfaces concrete that's been sealed, power troweled slabs, terrazzo, and other non porous substrates where standard thin set struggles to get mechanical grip. Applied before your setting mortar, MBP creates a bonding bridge that dramatically improves adhesion on surfaces that would otherwise be borderline for direct tile installation. Ready to
