Concrete is a popular material in pool deck design. It is available in a variety of colors and is highly durable and resistant to outdoor elements. Concrete is also slip resistant, making it a safer construction choice when building a pool deck. Concrete requires little maintenance and can be cleaned as needed when residue accumulates or stains develop on the deck.
Fill a cleaning bucket with water and bleach, using a cup of bleach for each cup of water.
Hose off the pool deck with the garden hose.
Pour about two quarts of the bleach and water solution onto the deck; then scrub the deck with a long-handled scrub brush. Repeat until the entire deck has been cleaned.
Rinse the deck once more with the garden hose.
Make a stain-removal paste by pouring a small amount of the bleach and water solution into a bucket. Stir in flour until you form a thick paste.
Spread a layer of paste roughly 1/4-inch thick over the stain, and let it sit until dry. On a warm, sunny day this should take roughly two to three hours; on an overcast or chilly day it may take several hours, or overnight.
Hose off the area. Rpeat the paste application if any stain remains.