Clean vinyl decking with a mixture of mild dish soap, warm water, and a soft-bristle brush. Sweep loose debris first, scrub the surface in sections, and rinse thoroughly with a garden hose. Avoid bleach, ammonia, abrasive cleaners, pressure washers, and steel wool. A proper cleaning takes 30-60 minutes and should be done once or twice a year on a Valordek vinyl deck.
Cleaning vinyl decking is the easiest part of owning a vinyl deck. Unlike wood that needs annual staining or composite that needs specific cleaners, vinyl deck membrane only needs water, mild soap, and a soft brush to stay looking new for the full 10-15 year warranty period. The challenge is not the cleaning itself, it is knowing what NOT to use. Cleaners that work on indoor vinyl flooring or composite boards can damage vinyl deck membrane permanently. This guide explains the right way to clean a Valordek vinyl deck and what to avoid. For Valordek's full vinyl decking lineup, see our vinyl decking hub.
What you need to clean a vinyl deck
Cleaning a vinyl deck requires four basic supplies, all of which most homeowners already own. The right tools matter less than avoiding the wrong ones. The wrong cleaner can scratch the surface, fade the colour, or break down the PVC over time.
What you need:
- Mild dish soap. Dawn, Sunlight, or any standard liquid dish detergent. About 2 tablespoons per gallon of water is enough.
- Warm water. A standard 5-gallon bucket works fine.
- Soft-bristle brush or sponge mop. Soft is the key word. A push broom with synthetic bristles works for larger decks. A long-handled deck brush makes the job easier on a knee.
- Garden hose. Standard pressure is fine. Do not use a pressure washer.
- Optional: A bucket of clean rinse water if you want to do a final wipe-down with a clean cloth.
What you do NOT need: bleach, ammonia, vinegar in concentrations above 1:4 with water, abrasive scrub pads, steel wool, wire brushes, pressure washers above 1500 PSI, or any cleaner labelled "for indoor vinyl flooring." None of these are appropriate for outdoor vinyl deck membrane.
How to clean vinyl decking step by step
The cleaning process for vinyl decking takes 30-60 minutes for a typical 100 square foot balcony. Work in shade if possible (cleaning solutions evaporate too quickly in direct sun) and pick a day when there is no chance of rain for the next 4 hours.
- Sweep or blow away loose debris. Leaves, dirt, dust, pet hair, and any loose material on the surface. A standard push broom or leaf blower works. This step prevents you from grinding debris into the surface during scrubbing.
- Mix your cleaning solution. 2 tablespoons of mild dish soap per gallon of warm water in a bucket. Stir gently. You do not need foam.
- Wet the deck surface. Use a garden hose to lightly wet the entire deck. This pre-soak loosens dirt and prevents the soap from drying on the surface before you can scrub it off.
- Scrub in sections. Apply the soap solution with a soft-bristle brush or sponge mop and scrub in small overlapping sections. Use moderate pressure. The goal is to lift dirt, not to abrade the surface. Work from one end of the deck toward the other.
- Pay attention to seams and edges. Dirt and debris collect along heat-welded seams, at edge flashing, and around drains. Use the brush to clean these areas thoroughly. Do not use a wire brush or anything that could scratch the membrane.
- Rinse thoroughly. Use the garden hose at standard pressure to rinse all soap residue off the deck. Soap residue left to dry will leave a haze on the surface. Rinse from the highest point of the deck toward the drains.
- Let the deck air-dry. No need to towel-dry. The vinyl membrane is fully waterproof so standing water will not damage it. Within 30-60 minutes the surface will be dry and ready to walk on.
For tougher dirt or staining, repeat steps 4-6 in the affected area. For most balconies and rooftop patios, a single pass is enough.
What you should NOT use on vinyl decking
Vinyl decking has specific cleaning restrictions. Cleaners that work on other surfaces will damage the PVC membrane, fade the colour, or void the manufacturer warranty. Knowing what to avoid is more important than knowing what to use.
Avoid these cleaners and tools:
- Bleach. Chlorine bleach degrades PVC over time and can permanently fade colour. Even diluted bleach will damage the membrane with repeated use. Do not use it.
- Ammonia. Same problem as bleach. Ammonia attacks the PVC formulation and shortens the life of the membrane.
- Concentrated vinegar. A 1:4 vinegar-to-water mixture is fine for an occasional spot. Stronger concentrations or daily use will dry out the PVC plasticizers and accelerate aging.
- Abrasive cleaners. Comet, Bar Keepers Friend, anything with grit. These scratch the textured surface of vinyl deck membrane and create permanent dull patches.
- Steel wool, wire brushes, abrasive pads. Same problem as abrasive cleaners. The membrane texture is part of how it sheds water and resists slipping. Scratching that texture damages the deck permanently.
- Pressure washers above 1500 PSI. High-pressure water can lift the membrane at edges and seams, drive water under the surface, and damage the texture. A garden hose at standard pressure is enough. If you must use a pressure washer, keep it under 1500 PSI, use a wide fan tip, and stay at least 12 inches from the surface.
- Solvent-based cleaners. Acetone, mineral spirits, paint thinner, brake cleaner, or any product designed to dissolve oil-based substances. These dissolve PVC.
- Indoor vinyl flooring cleaners. These are formulated for LVP and sheet vinyl, not for outdoor PVC waterproofing membrane. The chemistry is different.
If you accidentally used one of these cleaners and the membrane looks damaged, stop using it immediately and rinse the affected area thoroughly. If the damage is visible after rinsing, contact your local Valordek dealer for guidance on whether the area can be repaired or needs replacement.
How to remove stains from vinyl decking
Most stains on vinyl decking come off with the standard soap-and-water cleaning. For stubborn stains, a few specific approaches work without damaging the membrane. The key principle is "least aggressive first" — start with the gentlest method and only escalate if needed.
Common stains and how to handle them:
- Bird droppings. Wipe up immediately if possible (acidity can damage the surface if left). Clean with soap and warm water. Should come off completely.
- Tree sap or pollen. Soak the area with warm soapy water for 5-10 minutes to soften, then scrub gently with a soft brush. Repeat if needed.
- Food and drink spills. Wipe up while wet, then clean with soap and water. Wine, coffee, and grease all come off vinyl easily if addressed promptly.
- Grease spots from BBQ or grill. Standard dish soap is designed to break down grease. Apply directly to the spot, let it sit for 2-3 minutes, then scrub and rinse.
- Rust stains from outdoor furniture. Use a mild solution of cream of tartar and water (about 1 tablespoon per 1/4 cup water) on a soft cloth. Rub gently. Rinse thoroughly.
- Mildew or algae. A 1:4 solution of vinegar and water works for light cases. For heavier mildew, use a vinyl-safe mildew cleaner from a hardware store. Read the label to confirm it is safe for PVC. Avoid bleach.
- Tire marks (if you wheel furniture across the deck). Soap and water usually works. If not, a magic eraser used very gently on the spot, then rinsed.
- Paint splatters or dried adhesive. Do not use solvents. Try soap and water first. If that fails, contact your Valordek dealer for guidance on safe removal methods.
How often should you clean a vinyl deck?
Clean a vinyl deck twice a year for most homes — once in spring after winter debris accumulates, and once in fall after leaves come down. Light decks in low-traffic areas can get away with cleaning once a year. High-use decks, decks under trees, or decks with pets may need quarterly cleaning to keep the surface looking fresh.
The key timing principles:
- Spring cleaning (March-May). Removes winter dirt, salt residue if applicable, and any debris that accumulated during cold months. This is the most important annual cleaning.
- Fall cleaning (October-November). Removes leaves, pollen buildup, and dirt before winter sets in. Wet leaves left on a vinyl deck through winter can stain the surface.
- Spot cleaning as needed. Bird droppings, food spills, and tree sap should be cleaned within a day or two. The longer they sit, the harder they are to remove.
- After heavy use. Big party, BBQ event, or outdoor renovation work? Do a quick cleaning afterwards rather than waiting for the next scheduled clean.
Regular cleaning is required to maintain the Valordek appearance warranty. The warranty is voided if the deck is allowed to accumulate damaging debris or contamination over extended periods. Twice-yearly cleaning is the minimum to keep the warranty valid.
What about cleaning around hardware, drains, and edges?
Hardware, drains, and edges need extra attention during cleaning because they are where dirt accumulates and where water pools if drainage is blocked. A vinyl deck can be perfectly clean across the field but still develop problems at these critical points if they are ignored.
Drainage points: clean any drains, scuppers, or weep holes during every cleaning. Remove leaves, hair, and debris that block water flow. A blocked drain causes water to pool on the deck, which over time can compromise the membrane and damage the substrate. Use your fingers or a plastic tool to clear blockages, never a metal tool that could scratch the drain edge.
Edge flashing and walls: where the deck meets a wall or post, dirt and moisture get trapped along the edge. Clean these areas thoroughly with the soft brush. Inspect the sealant at edges during cleaning. Cracked or missing sealant should be flagged for repair (Valordek warranty requires annual sealant inspection at penetrations and edges).
Hardware: any railings, posts, light fixtures, or attached items collect dirt at their base. Clean around them carefully. Do not use abrasive cleaners on the metal hardware that could splash onto the vinyl.
For a deeper guide on what to inspect during cleaning, see our vinyl decking maintenance guide.
Frequently asked questions about cleaning vinyl decking
Can I use Dawn dish soap on vinyl decking?
Yes, Dawn dish soap is safe for vinyl decking and is the recommended cleaner for routine maintenance. Use about 2 tablespoons of Dawn per gallon of warm water with a soft-bristle brush. Dawn is mild enough not to damage the PVC membrane and effective enough to lift dirt, grease, and most common stains.
What is the best cleaner for vinyl decking?
The best cleaner for vinyl decking is mild dish soap diluted in warm water. Specialty vinyl deck cleaners exist but are not necessary for routine maintenance. Avoid bleach, ammonia, abrasive cleaners, and any product labelled for indoor vinyl flooring. Valordek vinyl decks require only soap, water, and a soft brush to maintain their full 10-15 year warranty.
Can you pressure wash vinyl decking?
Pressure washing vinyl decking is risky and not recommended. A standard garden hose at normal pressure is sufficient for cleaning. If a pressure washer is necessary, keep the pressure below 1500 PSI, use a wide fan tip, and stay at least 12 inches from the surface. High pressure can lift the membrane at edges, damage the texture, and void the Valordek warranty.
How do you remove stains from vinyl decking?
Most stains on vinyl decking come off with mild dish soap and warm water. For stubborn stains: pre-soak with soapy water, scrub gently with a soft brush, then rinse. For mildew use a 1:4 vinegar-water mixture. For rust use cream of tartar paste. Never use bleach, solvents, or abrasive cleaners on vinyl deck membrane.
How often should you clean a vinyl deck?
Clean a vinyl deck twice per year minimum: once in spring and once in fall. High-traffic decks, decks under trees, or decks with pets may need quarterly cleaning. Spot-clean spills, bird droppings, and debris as needed. Regular cleaning is required to maintain the Valordek appearance warranty.
Will cleaning vinyl decking with bleach damage it?
Yes, cleaning vinyl decking with bleach damages the PVC membrane, can permanently fade the colour, and voids the Valordek warranty. Even diluted bleach causes damage with repeated use. Never use chlorine bleach, ammonia, or any cleaner containing these chemicals on vinyl deck membrane. Mild dish soap and water is the safe alternative.
