A "Split-Slab" parking deck, the original between-deck waterproofing had long ago failed. So that our deck coatings were not blown off from water vapor pressurization, we perforated the structural slab, thereby venting potential pressure downwards.
Preparation
Defects are Noted and Prioritised
Water, hot and cold temperatures and automotive traction breaks-up concrete and expands the destruction of weak spots.
Residual Dirt Removed
Embedded dirt must be removed if long-term adhesion were expected.
Repair of Spalls, Cracks & Joints
The walls of control joints, and spalls, are repaired using special high-strength, polymer-modified repair mortars. Regular concrete and mortar will not serve.
The Steps to Perfection
Epoxy-Polyamide Primer Applied
Polyurethane vehicular deck coatings bond tenaciously to well formulated primers. Polycoat Products' chemists are perfectionists.
Introducing a Base Layer
Primers dry and remain "open" for about eight hours, during which the first base layer must be poured-out, squeegeed and back-rolled.
The pRoof
Ultra violet resistant top coats, into which non-slip surfacing is broadcast, are harder than base coats and stand up to tires and rotating pressures.