TimberTech wood/plastic composite products are formulated to inhibit mildew growth and minimize staining. Rinse off your TimberTech products periodically with a hose. Even if it appears clean, it is important to prevent build-up of pollen/debris. Mildew stains may occur where moisture, pollens, and/or dirt are present. Mildew needs a food source to grow, which can be grass, pollens, dirt, debris, wood and wood resins.
Maintaining a clean, dry surface is the best method for combating mildew. Ensure that water drains effectively from your deck. For TimberTech TwinFinish, DockSider and ReliaBoard, be sure that gaps exist between planks to allow for drainage.
Cleaners that are recommended for mildew removal and/or heavy cleaning are:
- Wash Safe Spray and Clean Composite Deck Cleaner
- Resist Mist Composite Deck Cleaner
Like any wood-based product, TimberTech’s wood-plastic composite products (ReliaBoard, TwinFinish, and DockSider) may experience a naturally occurring process called Extractive Bleeding/Tannins. This process may cause a temporary discoloration that will weather away with exposure to flushing rainfall and UV. In most cases the weathering process takes 8-10 weeks but could vary depending on location and specific product application such as a covered porch. Tannins may also be cleaned by utilizing the cleaners referenced for Basic Cleaning Recommendations for ReliaBoard, TwinFinish, and DockSider.
(These guidelines may not cover every care and maintenance scenario encountered. For additional questions about care and maintenance, call (800) 307-7780).