Cleaning & Care
Cleaning your deck regularly will help keep it looking new for years to come. Always test chosen cleaners in a small inconspicuous area of your deck for approved results. Never mix any other cleaners (ammonia, phosphoric acid, etc.) with bleach. Always spray water on plants and shrubs around the deck before and after the use of any deck cleaning solutions. You may want to fully cover sensitive vegetation.
Recommendations for specific cleaning issues
Dirt and Debris
Keep your deck clean by sweeping to remove dirt and debris. Using a leaf blower can be a very helpful quick clean once a week. If necessary, mild soap and warm water can be used with a scrub brush to gently remove stubborn spots.
As with all products containing wood, tannin stains can occur. MoistureShield products should be allowed to weather naturally for about 12 weeks before these stains are addressed. Using a deck brightener containing oxalic acid like Olympic® Deck Brightener or Cabot Problem Solver® Wood Brightener should remove these spots.
Oil and Grease Stains
Household degreasing agents, such as Dawn dishwashing detergent, should be used to remove the oil and grease stain as soon as the stain is noticed. Be sure to thoroughly rinse the detergent off of the deck with hot water. If the stain sits for more than a few hours the most effective method of removing it is with an oil stain remover such as Pour-N-Restore.
Based on our testing the most effective cleaner for quickly removing mold stains is Olympic Premium Deck Cleaner. Please note that Olympic Deck Cleaner is a bleach based cleaner and may temporarily lighten the surface appearance. After cleaning, for long lasting results use Spray and Forget as an inhibitor. Spray and Forget can also be used as a cleaner in situations where instant results are not needed. Please note that Spray and Forget is a non-bleach cleaner that will not lighten the deck. Please refer to Mold and Mildew Cleaning for more information on mold removal.
You can use a pressure washer to clean your deck. Always use a fan tip blade with no more than 1300 PSI, and do not apply closer than 8-10″ from the deck surface. Doing so may cause damage to the surface of the deck.
Scratches or Surface Abrasions
Markings of this type on your deck should fade within 12-16 weeks of installation. Using a deck wash containing hypochlorite (bleach) can speed this process up after natural weathering has occurred.
We recommend using a blue or white chalk line when installing your deck. DO NOT USE RED CHALK. Scrub the affected area with soap and hot water to help remove the stain. For stubborn stains, bleach can be added to the cleaning solution to achieve the desired result.
Rust Stains / Stubborn Spots
A cleaner containing oxalic acid, commonly known as deck brighteners, can be used to remove these stains. In order to achieve desired results, the cleaner may need to sit on the stain for up to 15 minutes prior to rinsing.
You can remove bird droppings from your composite deck with warm soapy water or deck cleaners. It is best to clean these off as soon as you notice them to avoid the natural tannins to stain the deck, which will require more vigorous cleaning.
Removing Ice or Snow
Calcium chloride or rock salt can be used to remove ice from MoistureShield products.
Although not very common, sometimes temporary bluish-black “tannin” stains can develop on composite decking. These will naturally fade over time or can be quickly removed with a deck cleaner containing oxalic acid (commonly known as wood brighteners). Using a deck cleaner containing oxalic or phosphoric acid may lighten your deck, be sure to follow manufacturer instructions.
Most often, tannin oils are washed out of plant matter or debris as it dries, regular cleaning will help prevent these from occurring.
Periodic cleaning keeps your composite decking looking refreshed, even years after installation.
These manufacturer recommended products are safe to use on MoistureShield wood composite decking products.
*Follow all package directions for proper usage, safety precautions and disposal. In some cases more stubborn stains will require reapplying cleaners until the desired level of cleanliness is achieved. At times, brushing the deck with a hard bristle brush may be necessary to remove any stubborn staining. Remember to always test chosen cleaners in a small inconspicuous area of your deck for approved results. Never mix any other cleaners (ammonia, phosphoric acid, etc.) with bleach.