MBP - Multi-Surface Bonding Primer Size:1 Gal. Apply KERDI to walls with

Apply KERDI to walls with 1/8" × 1/8" square-notch trowel

creating a watertight connection between the drain and the waterproofing assembly without sealant or secondary membranes

and color consistency

a tile threshold

MBP - Multi-Surface Bonding Primer Size:1 Gal. Apply KERDI to walls withMortar 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