Pressure Washing
What PSI to Pressure Wash Patio Furniture (500 to 1,500 PSI)
Quick answer
Patio furniture takes 500 to 1,500 PSI and about 1.2 GPM with a 40 degree tip held 12 to 24 inches away. Resin and aluminum handle the top of that range; wood and wicker want the bottom or a brush. A six-piece dining set takes roughly 25 minutes at 1.2 GPM.
Furniture is a wide range because the word covers very different materials. Poly lumber and powder-coated aluminum shrug off 1,500 PSI. Resin wicker over a steel frame does not: the strands fray and the weave loosens. Teak and other woods behave like decking and gouge. One setting does not fit a patio, so match the pressure to the piece.
Cushions never see a pressure washer at all. Get times for your set from the pressure washer PSI calculator.
On this page
What PSI do I need to clean patio furniture?
| Setting | Patio furniture |
|---|---|
| Pressure | 500 to 1,500 PSI |
| Resin, HDPE lumber and powder-coated aluminum | Upper end, up to about 1,500 PSI |
| Resin wicker and painted steel | Middle of the range, tested first |
| Wood and natural wicker | 500 to 800 PSI, or a brush and hose |
| Minimum flow | 1.2 GPM |
| Nozzle | 40 degree |
| Distance from the surface | 12 to 24 in |
| Cleaning rate | About 4 sq ft per minute for each 1 GPM |
| Watch for | Fraying wicker, loose fasteners, and cushions, which never get pressure washed |
Resin and aluminum tolerate the upper end; wood furniture and wicker need the low end or a brush and hose. Remove cushions first.
Which nozzle should I use on outdoor furniture?
| Tip | Color | Use on furniture |
|---|---|---|
| 40 degree | White | The working tip for every material here, kept 12 to 24 inches back. |
| 65 degree or soap | Black | Applies soap so it can dwell in the weave and the joints, which is where the dirt is. |
Narrow tips split resin weave, lift paint off steel frames and drive water into fastener holes. A 0 degree tip has no use on furniture.
How long does it take to clean patio furniture?
| What you are cleaning | Surface area | 1.2 GPM | 1.4 GPM | 1.8 GPM |
|---|---|---|---|---|
| Bistro set, 2 chairs and a table | 60 sq ft | 13 min | 11 min | 8 min |
| Six-piece dining set | 120 sq ft | 25 min | 21 min | 17 min |
| Dining set plus a lounge set | 200 sq ft | 42 min | 36 min | 28 min |
| Full patio, several sets and a deck box | 300 sq ft | 63 min | 54 min | 42 min |
Minutes = area divided by (GPM x 4 square feet per minute per GPM), the same formula the pressure washer PSI calculator uses. Heavy staining, mildew and detergent dwell time add to every figure, and a pass with detergent plus a rinse pass doubles the wand time.
How do I pressure wash patio furniture step by step?
- Strip the cushions and covers. Take every cushion, pillow and umbrella fabric off. These are washed by hand or per their care label, never with a pressure washer.
- Move the furniture off the deck. Set pieces on grass or a driveway so runoff and grit do not stain the deck or get driven into board gaps.
- Check the material and test. Try a chair leg or the underside of a table first, and start at the low end of the range for anything woven, painted or wooden.
- Soap and let it dwell. Apply cleaner with the soap tip and give it a few minutes in the weave and the joints, which is where mildew grows.
- Rinse at 12 to 24 inches. Use the 40 degree tip, keep the wand moving and work from the top of each piece down so dirty water does not run over clean surfaces.
- Dry before storing. Stand pieces so water drains out of tube frames, and let everything dry fully before stacking or putting it in a deck box.
Can you pressure wash cushions and umbrellas?
No. Pressure forces water deep into foam that then takes days to dry and grows mildew from the inside, and it can tear the seams and the coating on outdoor fabric. Cushions get washed by hand with mild soap, rinsed with a hose and dried standing on edge. Umbrella canopies follow the same rule, and many are removable for exactly that reason.
Dry storage is the real fix. A weather-tight box keeps cushions out of the rain instead of drying them out afterwards: Keter Luma 230 Gallon Deck Box is the largest here at 230 gallons, and Lifetime 130 Gallon Heavy Duty Deck Box is a dual-wall option for rainy climates. More choices are in the best deck boxes, and if the furniture itself is tired, see the best patio furniture sets.
Which pressure washers suit patio furniture?
Small electric machines are ideal: light to carry around a patio and easy to keep at low pressure. See the best electric pressure washers.
Sun Joe SPX3000 Electric Pressure Washer
$169.00Two detergent tanks and five tips including 40 degree and soap. Furniture cleaning is mostly soap and dwell time, and this keeps both loaded at a low price.
Best for: a couple of sets cleaned each spring
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Kärcher K 5 Premium Electric Pressure Washer with Hose Reel
$386.01Vario Power dials pressure down for wicker and wood without changing tips, which matters when a patio has three different materials on it.
Best for: mixed patios with wicker, wood and aluminum
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Westinghouse ePX3500 Electric Pressure Washer
$169.00A 19 pound anti-tip body with a 25 foot braided hose, easy to carry around furniture rather than dragging a hose past chair legs.
Best for: balconies, decks and small patios
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Greenworks 2000 PSI 1.2 GPM Electric Pressure Washer
$194.99PWMA-rated 2,000 PSI and 1.2 GPM with auto stop, so the motor is off while you move chairs, plus an onboard soap tank for cleaner.
Best for: homeowners who want one small washer for light jobs
Check price on AmazonHow we chose
We did not test these products in person. Picks are researched from manufacturer specifications and owner manuals, engine and safety certifications where they apply, warranty terms, public recall records, and the recurring themes in verified owner reviews. We favor established brands with large review counts and parts support, match each pick to a real yard size or task, and place it in the tier where its price and capability actually belong.
Frequently asked questions
What PSI is safe for plastic patio furniture?
Resin and HDPE lumber handle the upper end of the 500 to 1,500 PSI range with a 40 degree tip at 12 to 24 inches. Resin wicker over a steel frame is different: the woven strands fray and the weave loosens, so keep to the middle of the range and test on a leg first. Soap and dwell time do more than pressure on any plastic.
Can I pressure wash teak or wood furniture?
Only at the low end, 500 to 800 PSI with a 40 degree tip, moved with the grain the way you would treat a deck. Wood furniture is thinner and more detailed than decking, so it fuzzes and gouges faster. For most teak, soapy water and a soft brush give a better result and let you decide later whether to oil it or let it silver.
How do I clean outdoor cushions?
By hand, not with a pressure washer. Brush off loose dirt, wash with mild soap and water per the care label, rinse with a garden hose and dry standing on edge so water drains out of the foam instead of sitting in it. Pressure forces water deep into the foam, which then grows mildew from the inside and takes days to dry.
When is the best time to clean patio furniture?
Early in the outdoor season before the furniture goes back into daily use, and again before it goes into storage, because putting away dirty furniture lets mildew work all winter. Cleaning on a warm, breezy day helps everything dry fully. Storing cushions in a sealed deck box between uses cuts how often the set needs washing at all.
Researched, not professional advice. This page is compiled from published specifications, manuals, labels and owner-review consensus, not hands-on testing. Follow the manufacturer's instructions and product label, and consult a qualified professional where safety, chemicals, fuel or structures are involved. As an Amazon Associate we earn from qualifying purchases.