Q. What is parging?
A. Parging is a layer of mortar that is applied over foundations, concrete and other masonry units. It create a sacrificial layer, protecting whats underneath (ie. a concrete foundation)
Q. How is parging applied?
A. It’s applied by hand with trowels and floats. Usually a basecoat is needed to repair any deeper holes and cavities and then a finish coat is applied.
Q. How is it finished?
A. Its sponge floated after application to create a “sand finish”. This removed the trowel marks and helps seal the wall.
Q. How long does it last?
A. Depends on the application. If a foundation that is being parged moves each year, the parging may only last 1-5 years. If it’s stable it could last 15-30 years. The amount of water hitting the parging also changes its lifespan, so grading and water run-offs are important factors.
Q. What colour is it? Can I get different colours?
A. 95% of all parging is a variation on grey. The exact shade of grey usually changes depending on the wall, the cement, and the drying time. Different pigments do exist to alter the colour, but unlike painting it’s very difficult to get a uniform colour over a whole wall surface.
Q. Will my new parging match my existing parging?
A. We always match the specific finish of the parging. The colour will likely not be the exact same, usually because older parging is dirty and polluted, but the new parging will change over time to blend more closely.