Patio and Walkway Washing and Sealing Costs in Ontario in 2026 | Price Calculator

The cost of patio and walkway washing and sealing in Ontario is $400 to $1,000 for an average 200-300 square foot space and is affected by paver condition, material type, size of the area, and whether polymeric sand replacement is needed. Most contractors charge $1 to $3 per square foot for the complete service including pressure washing, polymeric sand installation, and sealing.

Which factors affect the total cost?

Project size matters most. Larger patios cost less per square foot because contractors spread equipment and travel costs across more area. A 200 square foot walkway runs $2.20 to $3.25 per square foot. A 500 square foot patio drops to $1.50 to $2.50 per square foot.

Paver condition changes the price. Clean pavers with minor dirt need basic pressure washing. Pavers covered in weeds, stains, or efflorescence require extra cleaning steps and specialty products. Heavy staining adds $0.50 to $1 per square foot to the base cost.

Material type affects cleaning methods and time. Concrete pavers handle high-pressure washing. Flagstone and natural stone need gentler techniques to avoid surface damage. Tumbled pavers with deep crevices take longer to clean than smooth pavers.

Polymeric sand replacement is usually necessary. Old sand breaks down and washes away over time. Removing deteriorated sand and installing new polymeric sand adds $0.75 to $1.50 per square foot to pressure washing alone.

Sealer type changes the final price. Water-based sealers cost less but need reapplication every 2-3 years. Solvent-based sealers cost more upfront but last 3-5 years. Wet-look sealers that enhance color cost $0.20 to $0.50 more per square foot than matte finishes.

What size patio costs what amount?

Small walkways and patios under 200 square feet pay premium pricing. Contractors have minimum service charges that make tiny projects expensive per square foot. Some charge flat rates of $300 to $400 regardless of size for very small areas.

Medium patios between 200 and 400 square feet hit the average price range. This is the most common residential project size. Pricing becomes more competitive because the job is substantial enough to be worthwhile.

Large patios over 500 square feet get the best per-square-foot rates. Material and equipment costs spread across more area. A 700 square foot patio might cost just $1.25 to $2 per square foot for the complete service.

These prices assume standard conditions. Add $100 to $300 for heavy staining. Add $200 to $400 if extensive weed removal is needed. Subtract $150 to $300 if sealing isn’t required.

Which service components cost how much individually?

Breaking down the services shows where the money goes:

Polymeric sand materials cost $45 to $60 per 50-pound bag. Each bag covers approximately 75 to 100 square feet for standard pavers. A 300 square foot patio needs 3 to 4 bags, which is $135 to $240 in materials alone.

Sealer material costs $150 to $300 per 5-gallon pail. One pail covers 300 to 500 square feet depending on paver porosity and sealer type. Solvent-based sealers cost more than water-based versions.

Labor makes up 60 to 70 percent of the total cost. This covers equipment use, expertise, insurance, and overhead. The price reflects professional results that last years longer than improper installation.

What does the pressure washing process include?

Contractors start with surface preparation. They sweep away loose debris and move furniture or planters. Pre-treatment chemicals get applied to stubborn stains, oil spots, and organic growth. The chemicals sit for 10-20 minutes before washing begins.

Pressure washing removes years of buildup. Commercial equipment delivers 3,000 to 5,000 PSI for concrete pavers. Flagstone and natural stone get cleaned at lower pressure to protect the surface. The process blasts out old polymeric sand from joints along with dirt and grime.

Efflorescence treatment happens during washing if needed. This white, chalky residue comes from salt deposits in the pavers. Special cleaners dissolve the minerals without damaging the paver color. Dark-colored pavers show efflorescence more than light ones.

Weed removal gets completed during washing. Pressure washing kills weed roots between pavers. Any remaining growth gets pulled by hand. The high-pressure water opens up joints completely for new sand installation.

The surface must dry completely after washing. This takes 24 to 48 hours depending on weather. Contractors won’t proceed to sanding until all moisture evaporates from the pavers and joints.

Why do weeds grow through pavers?

Old polymeric sand breaks down over time. Rain, freeze-thaw cycles, and UV exposure deteriorate the polymer bonds. Once the sand loses its binding strength, gaps form. Weed seeds land in these gaps and germinate.

Missing or insufficient sand creates perfect growing conditions. Soil and organic debris accumulate in empty joints. Moisture collects in the gaps. Seeds sprout easily with dirt, water, and sunlight available.

Poor installation causes premature sand failure. If the original polymeric sand wasn’t properly wetted and activated, it never bonded correctly. Inadequate compaction leaves voids that fill with soil over time.

Water drainage issues contribute to the problem. Standing water weakens polymeric sand faster. Areas with poor drainage see more weed growth. Puddling accelerates sand washout.

How does polymeric sand installation work?

Joint preparation comes first. All old sand must be completely removed. Contractors use pressure washing and specialized tools to clean joints down to the paver base. Joints need to be at least 2 inches deep for proper sand installation.

The pavers must be bone dry before sand application. Any moisture in the joints prevents proper sand activation. Contractors check weather forecasts and wait for at least 24 hours of dry conditions before proceeding.

Sand gets swept into joints in multiple passes. The first pass fills joints about halfway. Compaction settles the sand deeper. A second pass tops up the joints to about 1/8 inch below the paver surface. Never fill joints completely to the top.

Excess sand must be removed completely. Every grain left on the paver surface will harden when activated. Contractors blow off or sweep away all surface sand before wetting. This step prevents a rough, gritty texture on the pavers.

Activation happens with a fine mist of water. Too much water washes out the polymers. Too little leaves the sand unactivated. The sand changes color slightly when properly wetted. The surface needs to stay undisturbed for 24 to 48 hours while curing.

Coverage varies by joint width and paver size. A 50-pound bag of polymeric sand covers 75 to 100 square feet for standard pavers with 1/8 to 1/4 inch joints. Wider joints or tumbled pavers need more sand per square foot. Expect to use one bag per 80 square feet as a general estimate.

What causes pavers to lose color?

UV exposure fades pavers gradually. Sunlight breaks down pigments in the concrete over years. Red and brown pavers fade faster than grey ones. Areas in full sun show more color loss than shaded sections.

Weathering strips away the surface layer. Rain and freeze-thaw cycles erode the top of each paver microscopically. This exposes the aggregate and removes the colored cement paste. The paver looks washed out and dull.

Dirt accumulation makes pavers look faded. Organic debris, pollen, and atmospheric pollution coat the surface. This film masks the original color. Sometimes pavers aren’t actually faded—they’re just dirty.

Improper cleaning damages the surface. Using too much pressure or harsh chemicals strips the paver face. This removes color permanently. Acid-based cleaners can bleach concrete pavers if not rinsed properly.

Old, failing sealer turns cloudy white. When sealer breaks down from moisture trapped underneath, it develops a milky appearance. This makes the pavers look faded even though the color is still there under the bad sealer.

How does sealing restore paver color?

Sealer penetrates the paver surface. It fills the microscopic pores in the concrete. This brings out the rich, saturated color that was hidden by weathering. The effect is similar to how water temporarily darkens pavers.

Wet-look sealers provide the most dramatic color enhancement. They create a glossy finish that deepens color significantly. The shine makes pavers look wet all the time. Natural-look sealers enhance color more subtly with a matte finish.

Color-enhancing sealers contain tint. These products add pigment while sealing. They can even out color variations between pavers. Some restore very faded pavers to near-original appearance.

The sealer must bond to clean pavers to work properly. Any dirt, efflorescence, or old failing sealer prevents proper adhesion. This is why thorough cleaning before sealing is not optional—it’s essential for color restoration.

Protection from UV and weather preserves the restored color. Sealed pavers resist fading because the sealer shields pigments from sunlight. The protective layer also repels water and prevents further weathering.

How long does the complete project take?

A typical patio takes 2 to 3 days from start to finish. Day one is pressure washing and cleaning. The surface dries overnight and through day two. Polymeric sand gets installed on day two afternoon if conditions are dry. Sealing happens on day three after the sand fully cures.

Weather controls the timeline significantly. Rain delays every step. High humidity slows drying. Projects scheduled during Ontario’s spring and fall rainy periods often stretch to 4 or 5 days waiting for dry conditions.

The actual work time is shorter than the calendar time. Pressure washing a 300 square foot patio takes 2 to 4 hours. Polymeric sand installation takes 2 to 3 hours. Sealing takes 1 to 2 hours. Most of the project duration is waiting for things to dry.

Larger patios take more work time but similar calendar time. A 500 square foot patio might take 6 hours to pressure wash instead of 3. But it still needs 24 to 48 hours of drying between steps.

Complex issues extend the project. Heavy efflorescence needs multiple cleaning treatments. Deep stains require specialty products and extra time. Paver repairs or releveling add a day or more to the schedule.

What should homeowners know before starting?

How do paver types affect the cost?

Concrete pavers are the least expensive to clean and seal. They handle high-pressure washing well. Standard sealing techniques work perfectly. Most pricing estimates assume concrete pavers.

Flagstone costs more to service. The natural stone is more fragile than concrete. Lower pressure settings are required. Cleaning takes longer. Uneven surfaces make sealer application more difficult. Add 15 to 25 percent to concrete paver pricing.

Tumbled or textured pavers increase the price. Deep crevices hold more dirt. Extra time is needed to clean all surfaces. These pavers use more polymeric sand because of wider, irregular joints. Add 10 to 20 percent to standard pricing.

Brick pavers fall in the middle price range. They’re tougher than flagstone but more porous than concrete. Some brick types absorb more sealer, increasing material costs. Pricing is typically similar to concrete pavers.

Travertine and limestone are the most expensive materials to clean and seal. These natural stones are very porous and delicate. Specialty cleaners and sealers are required. Contractors experienced with these materials charge premium rates.

General Ontario Requirements

Residential construction work hours are regulated at the municipal level across Ontario. Most municipalities permit outdoor construction and maintenance activities during daytime hours on weekdays and Saturday mornings. Typical permitted hours are 7:00 AM to 7:00 PM Monday through Friday and 9:00 AM to 7:00 PM on Saturdays.

Work is generally prohibited on Sundays and statutory holidays throughout Ontario. This restriction applies to noise-generating activities including pressure washing equipment, which produces significant sound levels during operation.

Contractors must check local bylaws before scheduling work. Each municipality sets its own specific time restrictions. Homeowners hiring contractors should verify that scheduled work times comply with local regulations to avoid service interruptions.

Some municipalities require noise exemption permits for work outside standard hours. Applications typically need to be submitted in advance with project details. Permits may be granted for specific circumstances but are not guaranteed.

Municipality-Specific Bylaws

The following municipalities within one hour of Toronto have specific construction hour regulations. Contact information is provided for residents who need to verify current bylaws or report concerns.

Frequently Asked Questions