Can You Paint, Stain or Pressure Wash TimberTech Decking?
Homeowners who have spent years taking care of a wood deck tend to ask the same questions when they switch to TimberTech. Can I stain it? Can I power wash it? What do I do about snow?
The short version: TimberTech is low maintenance, not no maintenance. But the routine is very different from wood, and a few wood habits can actually hurt it. Here's what to do and what to skip.
For the full picture on TimberTech materials, start with our complete TimberTech decking guide.
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Quick answers
Can you paint it? No. TimberTech says never to paint or seal its composite or Advanced PVC decking.
Can you stain it? No, and you'll never need to. The color is built into the board's protective cap.
Can you sand it? No. Sanding wears through the cap that protects the board.
Can you pressure wash it? Only to rinse, at 1,500 PSI or less, with a fan tip.
Can you shovel it? Yes, with a plastic shovel.
Can you use ice melt? Yes, calcium chloride. Skip rock salt.
Why you can't paint or stain TimberTech
Wood needs stain because it soaks up water and fades in the sun. TimberTech boards have a protective cap that does that job for you. The color is in the board, not on top of it.
Paint and stain have nothing to grab onto on that cap, so they peel. You'd also void TimberTech's fade and stain warranty, and you'd sign yourself up for exactly the kind of yearly upkeep you bought TimberTech to get away from.
What if you have an older composite deck that's faded? Some early composite boards had no cap at all, and those can take paint. But if your deck is old enough to be uncapped, the frame underneath is usually due too. That's when it's worth looking at a full replacement instead of a paint job.
Why you shouldn't sand it
With wood, sanding takes off the gray and gets you back to fresh boards. With TimberTech, sanding takes off the protective cap. What's underneath isn't meant to face the weather. A scratch you sand out today turns into a dull, rough patch that soaks up dirt.
Most light scuffs fade on their own as the board weathers. A board with real damage can be swapped out.
Can you pressure wash a TimberTech deck?
Yes, but only to rinse, and only the right way. TimberTech's care guide says:
1,500 PSI maximum. Most gas pressure washers run well above that, so check yours.
Fan tip nozzle only. Never a pinpoint or zero degree tip.
Spray with the grain, never across the boards.
Rinsing only. The pressure washer rinses off the cleaner. It shouldn't be doing the scrubbing.
A garden hose does the job just as well, and it's the safer choice.
The right way to clean it
Once or twice a year is usually plenty.
Sweep off leaves, dirt and anything stuck between the boards.
Use TimberTech DeckCleaner or another cleaner TimberTech approves. Skip harsh solvents like acetone, paint remover or lacquer thinner.
Use the right brush. Use a stiff natural fiber brush for TimberTech Advanced PVC, and a medium to stiff nylon brush for TimberTech composite. They're different, and the wrong one can dull the finish.
Scrub with the grain, then rinse well so no cleaner is left behind.
Spills like grease or wine come up easiest if you get to them the same day.
Snow, ice and Minnesota winters
Shovel with plastic. Use a plastic shovel with no metal edge, and push in the same direction as the boards. Metal blades and ice choppers gouge the surface.
Ice melt: calcium chloride is fine. TimberTech says products with calcium chloride can be used on its decking. Avoid rock salt. Ice melt can leave a white film, which rinses off once it warms up.
You don't have to clear every snowfall. Snow sitting on a properly built TimberTech deck won't hurt it. Clear it when you want to use the deck or keep a path to the stairs.
Furniture, grills and rugs
Use pads under furniture legs, and lift rather than drag.
Put a mat under the grill to catch grease, and clean any spills quickly.
Choose breathable outdoor rugs. Rubber backed mats trap moisture and can discolor the boards.
Move planters now and then, or set them on feet so water doesn't sit under them.
Can you put TimberTech over your old deck boards?
No. New boards always go on the frame, never on top of old decking. Layering them traps water, adds weight, and raises the deck height at your door and stairs.
Whether the old frame can stay is a separate question. We only reuse a frame when it's in excellent structural condition and can be grandfathered in under current code. If there's any doubt, we replace it. More on that in our guide on how long TimberTech decking lasts.
Low maintenance, done right
Compare a couple of cleanings a year to sanding and staining a wood deck every spring, and it's not close. That's the real payoff of TimberTech. You just have to stop treating it like wood.
If you're still deciding, see what a TimberTech deck costs in our guide on TimberTech deck cost, or read our TimberTech vs Trex comparison.
Ready for a deck you don't have to stain?
Book a free deck consultation and we'll bring TimberTech samples to your home in Plymouth, Maple Grove, Minnetonka or anywhere in the west metro. Want a ballpark first? Try our online deck estimate tool. You can also see more of our deck replacement work.
FAQ
Can you paint TimberTech decking?
No. TimberTech says never to paint or seal its composite or Advanced PVC decking. Paint won't hold on the protective cap, and it voids the fade and stain warranty.
Can you stain composite decking?
Not modern capped boards like TimberTech. The color is built into the cap, so there's nothing to stain. Only older uncapped composite boards take stain.
What PSI is safe for a TimberTech deck?
1,500 PSI maximum, with a fan tip, spraying with the grain, and for rinsing only.
What ice melt is safe for TimberTech?
Calcium chloride products are fine on TimberTech decking. Avoid rock salt, and rinse off any white film once it warms up.
What brush should I use on TimberTech?
A stiff natural fiber brush for Advanced PVC, and a medium to stiff nylon brush for composite.
How often should I clean a TimberTech deck?
Once or twice a year, plus quick cleanup of spills. That's it.
Related reading
TimberTech Composite Decking: Everything Minnesota Homeowners Should Know
How Long Does TimberTech Decking Last?
How Much Does a TimberTech Deck Cost?
TimberTech vs Trex: Which Decking Is Better?
What Are the Downsides of Composite Decking?
TimberTech Composite vs Advanced PVC: Which Is Right for Your Deck?
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