What is Poly Sand Haze and How to Fix?
To understand what poly sand haze is, let’s first take a look at how pavers are installed. Most pavers, regardless if it is a driveway, sidewalk, patio, or pool deck area, are laid on a compacted bed of sand. The bricks are laid out in whatever pattern you desire and are leveled to create an entire paver structure. Sand is then poured onto the paver surface and swept into the gaps between the pavers. This is typically fine polymeric sand especially designed for paver construction.
The polymeric sand joints are then misted with water. The water reacts with the poly sand and creates a binding agent that helps bind the sand particles together. However, before water is misted onto the surface, the poly sand dust left over on the surface must be completely removed. If the poly sand dust is not removed, it will create a white haze on top of the pavers. This is called poly sand haze.
How to Clean White Efflorescence from Bricks and Concrete
Efflorescence is a white deposit of water soluble salts that can appear on masonry bricks. It can be a fine powdery substance or a crystallized buildup. Depending on the type of salts present it can also appear green, brown, or yellow. Efflorescence happens when soluble alkalis are present in the brick or grout and moisture is able to penetrate the brick forcing salt deposits to the surface. This can happen a month after the brick was laid or as long as a year later.
Before applying a concrete sealer or water repellent it is typically needed to prep the surface first. Prepping consists of cleaning with water and using a chemical cleaner that is specific to the stain you are trying to remove. Cleaners for concrete and brick pavers come in many different formulas.
Let’s look at the main reasons to clean and prep your concrete:
General Dirt and Grime Cleaning
When cleaning to remove dirt and grime you may just need water and a pressure washer. If the stains are stubborn, then a general all-purpose concrete cleaner or even bleach would help with the washing.
Why has my Brick Paver or Stamped Concrete Sealer Turned White?
This is a very common question and a fairly common occurrence. Typically this happens to filming acrylic based sealers that leave a shine on the surface. These sealers are typically applied to brick pavers and stamped concrete surfaces to enhance the overall appearance.
There is not one specific reason that your old sealer has blushed by turning white or cloudy so there is not one remedy to fix. In this article, we will go over the main reasons that your sealer has failed so you will be able to fix this problem permanently.