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Freshly sealed asphalt driveway in Kitchener

Coal-tar-free sealers only

Driveway Sealing and Asphalt Sealcoating in Kitchener

Kitchener Asphalt Paving Pros seals residential driveways and sealcoats commercial parking lots with coal-tar-free asphalt sealers, choosing a water-based emulsion or an oil-based sealer to suit each surface. Every job includes cleaning, crack filling and hand-cut edges before any sealer goes down.

Homeowners book driveway sealing every 2 to 3 years to keep the surface black and shed salt and oil. Plaza owners, condo corporations and industrial sites book asphalt sealcoating as part of a maintenance cycle, done in sections so tenants and residents can still park.

We have sealed asphalt across Waterloo Region since 2013, and the jobs that peel early almost always share one of three causes: sealer laid on dirty asphalt, on damp asphalt or on asphalt that had not cured. Our process is built to rule out all three.

Our services

Driveway Sealing and Parking Lot Sealcoating Services

We seal driveways, plaza and condo lots, church and office lots and industrial yards, as one-off visits or on a set cycle. Every visit includes the same preparation, because sealer is only as good as the surface under it.

  • Cleaning by blower and broom, or hot-water asphalt power washing where grime and oil call for it
  • Primer on oil and fuel spots so they do not bleed through
  • Crack filling with our hot-pour crack sealing service before any sealer
  • Edges cut in by hand along garages, walks, curbs and lawns
  • Barricades at the entrance until the sealer has dried

Residential Driveway Sealing

A typical double driveway is cleaned, crack filled, edged and sealed in one visit. You can walk on it the same evening and drive on it after 24 to 48 hours.

Commercial Lot Sealcoating

Plazas, condos and offices are sealed in sections with barricades, so part of the lot stays open while the rest cures. We coordinate a line painting contractor to restripe right after.

Maintenance Programs

Property managers can set sealing on a 2 to 3 year cycle alongside crack sealing and patching, priced and scheduled ahead through our asphalt repair and maintenance plans.

Honest expectations

What Sealcoating Does and Does Not Do

Sealcoating protects the surface of sound asphalt from sun, water, salt and spills, and restores its black colour. It does not repair anything, so damage has to be fixed before the sealer goes on.

What it does

A thin coat of sealer shields the binder that holds the stone together. These are the benefits you can expect.

  • Slows UV oxidation, the drying that turns asphalt grey and brittle
  • Closes surface pores so water and meltwater run off instead of soaking in
  • Resists road salt and de-icer brought in on tires
  • Slows oil and fuel from soaking in, though asphalt-based sealers are not fuel-proof
  • Restores a uniform deep black and fills fine surface texture

What it does not do

Sealer is a protective film a fraction of a millimetre thick, not a structural layer. These problems need a repair first.

  • It does not bridge or fix open cracks
  • It does not fill potholes, low spots or birdbaths
  • It does not fix a sinking, heaving or failed base
  • It does not make thin or worn-out asphalt stronger
  • It wears off in tire paths within 2 to 3 years and has to be renewed

If your surface has potholes or alligator cracking, start with asphalt patching and pothole repair and seal once the patches have weathered.

Sealer types

Oil-Based vs Water-Based Sealers

Oil-based sealers soak into older, dry asphalt and leave a deeper black; water-based emulsion sealers form a protective layer on top, dry faster and smell far less. Both types we use are coal-tar-free asphalt sealers.

We recommend one or the other after looking at the age, porosity and use of your surface.

Oil-Based Asphalt Sealers

Oil-based sealer penetrates older asphalt that has lost its oils, which helps a dry, open surface hold together a little longer. The trade-off is a longer cure and a solvent smell that some homeowners notice near open garage doors and windows.

Water-Based Asphalt Emulsion Sealers

Water-based sealer sits on top as a protective layer and dries faster with very little odour. It needs a warm, dry day to cure properly, so we schedule it for sunny weather and avoid cool, humid evenings.

Oil-based and water-based asphalt sealers compared
PropertyOil-based sealerWater-based emulsion sealer
How it worksSolvent carries asphalt into the surface and re-oils dry binderAsphalt emulsion dries into a film on the surface
FinishDeeper, richer blackEven black with a flatter sheen
Walk-on timeToward the long end of 4 to 8 hoursToward the short end of 4 to 8 hours
Drive-on timeUsually closer to 48 hoursOften 24 hours in warm sun
OdourStrong solvent smell for a day or soLow odour
Weather sensitivityNeeds 10 C and rising and dry pavementNeeds 10 C and rising, plus sun and low humidity to dry
Best useOlder, grey, porous drivewaysNewer driveways, commercial lots and well-kept surfaces

Regulations

Coal-Tar-Free Sealing Under Canada's 2025 Ban

Coal-tar pavement sealants are now illegal to make, import or sell in Canada. The federal Certain Products Containing Toxic Substances Regulations (SOR/2025-36) banned their manufacture and import from October 1, 2025 and their sale from December 31, 2025.

Why coal tar was banned

Coal-tar sealers contain high levels of polycyclic aromatic hydrocarbons (PAHs). As the sealer wears, PAH-laden dust is tracked indoors and washed into storm drains and creeks.

What we use instead

Every sealer we apply is asphalt-based, either a water-based emulsion or an oil-based sealer, and contains no coal tar.

Resealing old coal-tar surfaces

Driveways sealed with coal tar years ago can be resealed with asphalt-based sealer once they are cleaned. We check adhesion on a test area first if the old coating is thick or flaking.

How to check any sealer

Ask the contractor for the product's safety data sheet. A compliant sealer will not list coal tar, coal-tar pitch or refined tar among its ingredients.

Application

Brushed, Squeegeed or Sprayed: How Sealer Goes On

On driveways we cut in every edge by hand with a brush and spread the rest with a squeegee, which works the sealer into the surface texture. On large lots we hand-edge first and then spray, because spraying lays thin, even coats quickly over a big area.

Each method has a job it does best.

Brushing

A brush pushes sealer into pores and around edges, garage aprons and walkways. It is slow but gives the cleanest lines, so every job starts with it.

Squeegee

A rubber squeegee drives sealer into open, older asphalt and fills fine texture. It suits driveways and porous surfaces that need more material.

Spray

Spray equipment applies a uniform thin coat fast and suits commercial lots. Two thin sprayed coats outlast one heavy one, which can stay soft and track.

Half sealcoated plaza parking lot with barricades

Our process

Our Sealcoating Process

A typical driveway is sealed in one visit, and a commercial lot over one or more days by section. The order of these six steps never changes.

  1. Clean or power wash

    Dirt, sand, leaves and loose stone are blown and swept off; grimy or stained surfaces are washed with hot water and left to dry completely.

  2. Prime oil spots

    Oil and fuel stains get a primer that seals them in, so they do not lift or discolour the new coat.

  3. Fill cracks

    Cracks are filled or sealed with hot-pour rubberized sealant before any sealer is spread.

  4. Cut in edges by hand

    We brush a clean border along garage slabs, walkways, curbs and lawn edges, and mask anything that must stay clean.

  5. Apply one or two coats

    One coat suits most driveways in good shape. Older, porous surfaces and busy lots get two thin coats, with drying time between them.

  6. Barricade until dry

    Sawhorses or cones go across the entrance and stay until the sealer is ready for foot and then vehicle traffic.

Drying times

Weather, Drying Time and When You Can Drive

You can walk on a sealed driveway after 4 to 8 hours and drive on it after 24 to 48 hours. Sealing needs air at 10 C and rising, dry pavement and no rain for the following 24 hours.

What speeds up and slows down sealer drying
ConditionEffect on drying
Full sun, 20 C or warmerFastest; walk-on near 4 hours
Shade from trees or the houseSlower; shaded sections can stay tacky for hours longer
High humidity or heavy dewSlows water-based sealer the most
Cool evening after an afternoon jobCan push drive-on time toward 48 hours
Rain within 24 hoursCan wash off uncured sealer; we reschedule

Keep lawn sprinklers off the driveway for a day, and in hot weather avoid turning the steering wheel while the car is stopped on fresh sealer. We watch the forecast closely and move a booking rather than seal ahead of rain.

Sealing schedule

How Often to Seal in Waterloo Region

Seal new asphalt for the first time after about 12 months, then every 2 to 3 years. Sun exposure, traffic and how much salt reaches the surface decide where in that range your driveway falls.

Wait about a year on new asphalt

Fresh asphalt needs its first season to cure and release its oils. Sealing too early traps them and leaves a soft surface that scuffs.

Then every 2 to 3 years

South-facing driveways in full sun and busy lots fall toward 2 years; shaded, lightly used driveways can go 3.

Watch the tire paths

When grey asphalt shows through where tires run and turn, it is time. The calendar matters less than the wear.

Do not over-seal

Sealing every year builds up layers that crack, peel and turn slippery. Many of the flaking driveways we see were sealed too often, not too rarely.

Pricing

Sealcoating Prices

Residential driveway sealing costs $0.25 to $0.45 per square foot before HST, with a $250 minimum, and a typical double driveway runs $250 to $450. Commercial sealcoating runs $0.18 to $0.30 per square foot, depending on the size of the lot.

Price depends on area, how porous the surface is, the number of coats, and how much crack filling and oil-spot priming the surface needs first.

We seal across Waterloo Region and Wellington County, including driveway sealing in Waterloo, driveway sealing in Cambridge and driveway sealing in Guelph, all within about 15 to 35 minutes of our Kitchener shop.

FAQ

Sealcoating Questions

These are the driveway sealing questions homeowners and property managers ask us most.

How long after sealing can I drive on my driveway?

Usually 24 to 48 hours. Shade, humidity and a cool evening slow drying, so a shaded driveway sealed late in the day sits at the longer end.

Can a brand-new driveway be sealed right away?

No. New asphalt should cure for about 12 months, so a driveway paved this summer is first sealed next season. Sealing sooner traps oils still leaving the surface and can leave it soft enough to scuff.

Which sealer holds up best in Canadian winters?

The sealer that lasts is the one applied well, more than any brand. What matters is solids content, a clean and dry surface, thin even coats rather than one heavy one, and enough warm days to cure before cold nights arrive in late September.

Is it worth sealing a driveway?

Yes, if the asphalt is sound. At $250 to $450 for a typical double driveway every 2 to 3 years, sealing slows the oxidation and salt damage that shorten a 15 to 25 year driveway life; on a failing driveway, the money is better spent on repair or replacement.

Do you sealcoat parking lots after hours?

Yes. We phase lots by section and can schedule early mornings, evenings or Sundays so a plaza or condo can keep operating while the work is done.

Book early

Book Sealing Before the Summer Rush

Driveway sealing demand peaks from June to August, so booking in April or May gets you the dry, warm date you want. Tell us your driveway or lot size and we will quote the sealer type, coats and prep in writing.

  • Coal-tar-free water-based or oil-based sealer, matched to your surface
  • Cleaning, crack filling and hand-cut edges included
  • Sealed only on dry days at 10 C and rising, with 24 hours clear of rain
Shop
324 Stirling Ave S, Kitchener, ON N2M 3H6
Monday to Saturday
7:00am to 9:00pm
Sunday
9:00am to 9:00pm
Call 548-457-2043Free Quote