WaterProofing Report

"Do I have to shot-blast the concrete prior to installing your product?" I hear this often from people looking
for information on our products because they just found us in a national specification and want some information about the products.

The simple answer of course is, "Yes!" and the follow up question I always hear is,"Why?"

When concrete cures, there are naturally occurring bleed-water tracks (or capillaries) forming, bringing water and unreacted calcium hydroxide to the surface. The calcium hydroxide reacts with atmospheric CO2 and produce calcium carbonate. Calcium carbonate is weaker than reacted CaOH and therefore must be removed by mechanical means.