Many people choose composite decking because it's low maintenance compared to a traditional wood deck. While that's true, it doesn't mean that your deck won't require a little bit of care. You'll want to keep it clean, of course, and you may encounter problems here and there that need to be handled quickly and efficiently. With a little extra effort, you can ensure it looks as good as new even years after it was built. Follow these tips to keep your composite deck looking good year-round.
1. Do a General Cleaning Every Six Months
One of the best things you can do for your composite decking is to keep it clean. Most experts recommend a general cleaning at least twice a year. It doesn't involve much. All you need is some warm water and some sort of soap — dish detergent works fine. Use a rag or soft-bristled brush that won't scratch the surface and give your deck a good cleaning every six months or as needed. Always scrub or wipe in the direction of the grain pattern. Once you're finished, use a garden hose to wash the soapy water away.
2. Try To Tackle Stains Within a Week
In general, it's hard to stain composite decking, but it does happen if you spill something like oil. Water stains can also occur over time. Try to tackle any spills or stains within a week, but the sooner, the better. Start with warm soapy water and, if that doesn't work, switch to a water-based cleaner meant to be used on composite decking materials. Before you use any type of cleaning product on your deck, test it in an area that isn't easily seen to make sure it doesn't affect the appearance of your surface.
3. Clear Ice and Snow Away as Soon as Possible
If you live in an area that sees ice and snow, you'll want to keep it off your deck as much as you can. Again, a composite deck isn't prone to staining, but if the water sits on your deck for long periods of time, it could occur. Also, ice and snow can make the surface slick and dangerous for walking. Avoid using metal shovels and rakes that have sharp angles or can scratch your deck. A plastic broom or shovel is always a better choice. You'll also want to avoid using salt on your deck surface. Not only can it scratch the surface but it can leave a residue. Opt for an ice-melting product that is salt-free instead.
4. Sweep and Remove Debris From Gaps in the Boards Regularly
Keeping debris off your deck is a great way to keep it clean and problem-free. Sweep regularly — maybe once a week or as needed. You'll probably need to do it more frequently after storms or during the fall when leaves are building up on it. Always remove any branches or limbs falling on your deck as soon as possible. You'll also want to regularly remove any debris that gets stuck in the gaps between your boards. Use a broom, brush, spatula, or putty knife to dislodge them gently. Again, avoid using metal or sharp objects that might accidentally scratch the surface.
5. Keep the Underside of Your Deck Ventilated Well
Most of your focus will be on the surface of your composite deck, but you also need to be concerned about the space underneath it. Experts recommend that you keep at least 6 inches of space free below your deck for good airflow and ventilation. This can prevent mold and decay over time. That means keeping an eye on any weeds, brush, or other materials that may grow underneath it and trimming them back as necessary.
6. Clean Up Food and Grease Spills as Soon as Possible
Any type of stain on your composite deck should be tackled as soon as possible. Many people opt to grill or dine on their decks, which often leads to spills. If you do spill food, particularly grease, it can leave a mark. Start by soaking up as much as you can with paper towels. Once you do that, use warm soapy water and a soft-bristled brush to scrub the remaining grease or food from the surface. You may want to use a dish detergent designed to clean grease. Again, if that doesn't work, consider a cleaner designed specifically for composite decks, but test it first to ensure it doesn't leave marks of its own.
7. Don't Let Your Grill or Furniture Scratch Your Deck
You want to enjoy your deck, so you probably plan to fill it with comfortable furniture where you can sit out back and enjoy a cup of coffee and a good book. You may even add a grill where you can spend your summers cooking burgers, steaks, and other goodies for your family. There is nothing wrong with this, but be careful as these items can also scratch the surface. Consider putting a mat under your grill and look for furniture that won't scratch or consider adding pads and protectors to your deck furniture. A splash mat around your grill can also help prevent you from spilling and creating grease stains.
8. Use Caution If You Use a Pressure Washer
It might be tempting to use a pressure washer to clean your composite deck, and that is a possibility, but you have to be careful when you do. Do not use it above 2,500 PSI, although some experts say 3,100 PSI is fine. You may want to check with the manufacturer or company who installed your deck to get a more accurate number as not all composite decking is created equally. Make sure you keep the spray wand at least 12 inches above the deck's surface to reduce the chances of damaging the boards with too much intense pressure.
