If your home has traditional hardwood flooring, the heavy cleaning required before every family gathering or barbecue can be exhausting—let alone the sanding, sealing, and staining that consume time and money! With composite decking, however, cleaning and maintenance are effortless.
Compared to traditional hardwood, composite decking is much easier to maintain—see our detailed WPC vs wood decking comparison to learn more.
Composite decking is designed for long-term durability and low maintenance. Still, following the right cleaning steps will keep it looking fresh and vibrant.The good news: thanks to its high-performance material, composite decking does not require sanding or staining, and maintenance costs are far lower compared to hardwood floors. Simply clean it periodically with the right method—this guide shows you how to finish the job in just one afternoon. Compared with traditional wood decking, composite decking can save up to 90% of maintenance time and thousands of dollars in long-term upkeep.
The 6-Step composite decking Cleaning Method
Step 1: Clear the Deck Area
- Plan your cleaning path and carefully remove all furniture, potted plants, and décor (avoid dragging items to prevent scratches)
- Pay special attention to corners and hard-to-reach areas
- Prepare non-slip mats or protective covers for temporarily placed items
Step 2: Remove Surface Debris
- Use a soft-bristle broom or leaf blower to clear debris from the inside out
- Check gaps and drainage channels for trapped dirt
- Cover immovable plants or decorations with waterproof sheets
- A dust mask is recommended for this step
Step 3: Prepare the Cleaning Solution
Tools Required:
✅ Deck Cleaner (or mild dish soap)
✅ 5-gallon bucket | Garden sprayer | Deck brush
✅ Measuring cup | Microfiber cloth | Absorbent mop
✅ Rubber gloves | Safety goggles (optional)
Dilution Ratio:
One gallon of diluted cleaner covers about 93 m² (1,000 sq ft)
- Light dirt: 1:40 dilution
- Heavy dirt: 1:20 dilution
- Stubborn stains: 1:10 spot treatment
Step 4: Clean in Sections
- Divide the deck into areas (no larger than 10 m² each)
- Use a “Z” spray pattern for even coverage
- Let the cleaner sit for 30–60 seconds (do not allow it to dry)
- Pay special attention to seams and joints
Pro Tips:
▸ Clean in the morning or late afternoon to prevent rapid evaporation from direct sunlight
▸ Pre-treat stubborn stains before scrubbing
▸ Start with the dirtiest areas first
Step 5: Scrub and Rinse
- Scrub along the grain at a 45-degree angle (use a stiff natural fiber brush for PVC surfaces and a medium nylon brush for composites)
- Rinse immediately with clean water (pressure washer limited to 1500 PSI, nozzle 30 cm / 12 in from surface)
- Rinse from high to low areas for better drainage
- Flush drainage channels thoroughly
Step 6: Dry Completely
- Use an absorbent mop to remove standing water
- Follow with a leaf blower or wet/dry vacuum for remaining moisture
- Inspect all areas and re-clean if necessary
- Wait 24 hours for complete drying before replacing furniture
Stain Removal Solutions
| Stain Type | Professional Method |
|---|---|
| Grease/Oil | Blot with paper towels, apply degreaser, rinse with warm water |
| Mold/Mildew | Use mold remover + nylon brush, ensure thorough drying |
| Tannin Stains | Remove source debris, treat with mild alkaline cleaner |
| Ice/Snow | Use a plastic shovel, rinse with warm water (avoid metal tools) |
| Wine Stains | Wipe immediately with saltwater, then use neutral cleaner |
Daily Maintenance Tips for Composite Decking
- Sweep with a soft broom or vacuum weekly
- Wipe pet footprints or food spills immediately to prevent staining
- Use protective mats when construction work is nearby
- Perform deep cleaning at least twice a year (best during spring and fall)
- Regularly check drainage systems for blockages
Frequently Asked Questions
Q: Can I use dish soap for cleaning composite decking?
A: Yes, diluted dish soap (1:50 ratio) works, but Gladol Deck Cleaner contains special protective agents that enhance performance and prolong deck life.
Q: Can I use a pressure washer?
A: Only for rinsing, and under these conditions:
→ Pressure ≤ 1500 PSI
→ Use a 40° fan-tip nozzle
→ Maintain 30 cm (12 in) distance
→ Do not spray directly into board joints
→ Limit spraying to 3 seconds per spot
Q: How often should I clean composite decking?
A: A full clean every 6 months in temperatures above 13°C (55°F). High-traffic areas should be cleaned every quarter.
Upgrade Your Outdoor Space with Gladol
Tired of high-maintenance decking? Gladol composite decking offers the beauty of wood with unbeatable durability:
→ Patented waterproof and anti-mold technology
→ 10-year UV fade protection guarantee
→ 20-year product warranty
→ Anti-slip surface (ASTM certified)
Take Action Now:
- Book a professional measurement service
- Request free samples (experience the real texture)
- Get a customized 3D design and quote
Pro Tips:
- Confirm your decking material (PVC or composite) before starting
- Avoid harsh acid/alkaline cleaners (pH 6–8 recommended)
- For tough stains, take a photo and consult official support
- Consider professional maintenance every 3 years
By following this expert maintenance plan, your deck will stay like new—ready to welcome friends and family anytime. Customer feedback shows this guide can extend deck lifespan by over 35%.
Looking to match your deck with modern exterior solutions? Consider pairing it with WPC wall panels for a cohesive and weather-resistant finish.
