How Do I Paint Exterior Concrete Block?

Concrete block is a simple substrate to coat it is very important to ensure all absorbency is evened out prior to application of topcoats. If this process is not completed correctly spread rates for finishing coats will be greatly reduced. 

Cleaning

Clean from all atmospheric, algae, mould contamination using Valtti Mould Removal Solution (1 part solution:4 parts water).

Priming

1. Hydrosol Masonry Primer (1-2 coats Hydrosol Masonry Primer, primer coat should run off blockwork when it is adequately sealed)

Topcoat Options

1. Finngard Silicone Protect
2. Finngard Opaque (High-performance option)
3. Hydroblock WB  (Clear protection). Note, no primer is required before application of Hydroblock WB