How to Seal Pavers: Full Contractor Process (Clean, Sand, Seal)
To seal pavers properly, inspect the surface, clean it thoroughly with a surface cleaner and the right chemical, remove efflorescence, let it dry, refill joints with clean dry jointing sand, then apply the sealer in thin, even coats within the TDS temperature range and keep traffic and rain off until it cures. Skipping any step, especially drying, is the main cause of callbacks.
What does a professional paver sealing job include?
A paver sealing job is really three jobs: clean, sand, seal. The sealer gets the attention, but the result is decided by the first two.
| Phase | Goal | Key products and tools |
|---|---|---|
| Inspect and quote | Identify stains, failing sealer, efflorescence, joint condition, drainage | Water test, test patches |
| Clean | Remove dirt, organics, oil, efflorescence and old sealer | Surface cleaner, EffBOMB, OxyShock MAX, GreaseGone MAX, Tidal Wave X |
| Dry | Get moisture out of pavers and joints | Time, sun, air movement |
| Sand | Fill joints to the correct height with clean dry sand | Trident SEK jointing sand, broom, blower |
| Seal | Apply sealer evenly at the right rate | Sprayer or cart, rollers, brushes |
| Cure | Protect from traffic and rain | Cones, tape, client communication |
How do you inspect and quote the job?
- Walk the site with the client. Ask what look they want and what bothers them.
- Check for existing sealer. Water beading, sheen or peeling suggests an old film.
- Note stains. Oil, rust, organics, efflorescence, tire marks.
- Check joints. Low, washed-out or weedy joints need full re-sanding.
- Check drainage. Downspouts and irrigation that feed water onto pavers will cause efflorescence later.
- Do test patches. Clean and seal a small area if the client is undecided on finish.
How do you clean pavers before sealing?
- Remove furniture, planters and debris. Blow off loose material.
- Pre-treat stains. Oil and grease with GreaseGone MAX; organics with OxyShock MAX; efflorescence and haze with EffBOMB.
- Strip failing sealer if present. Use Tidal Wave X and a stripping surface cleaner.
- Surface clean the field. Overlapping passes for an even result.
- Clean out joints. For full re-sanding, remove old sand to the depth the sealer and sand system require.
- Treat efflorescence. Apply EffBOMB at 10:1 via downstream injection (EffBOMB covers 1,000-6,000 sq ft per 5 gal pail, depending on dilution), keep wet for about 10 minutes, then rinse with high pressure.
- Final rinse. Remove all chemical residue.
How long do pavers need to dry?
Until both the paver surface and the joint sand are dry. Sanding wet joints causes sand to stick and bridge; sealing damp pavers causes blushing. In BC, after a full wash, plan a dry day or more. Elsewhere in Canada, dry, warm summer weather shortens this. When in doubt, wait.
How do you sand the joints?
- Use clean, dry, angular sand. Trident SEK Premium Paver Jointing Sand meets ASTM C-144, is washed, screened and dried, and is designed for use with Trident joint stabilizing sealers for joints up to 3/4". It comes in pearl, tan, gray, platinum, black and fieldstone.
- Spread and sweep diagonally across the joints.
- Compact if appropriate to settle sand; top up.
- Sweep the surface clean. Sand left on the face will be sealed in.
- Blow off fine residue.
See the paver jointing sand collection.
How do you apply the sealer?
- Check conditions. Temperature, humidity and forecast must meet the TDS for application and cure.
- Mix correctly. For 2-part sealers like CAT 5, mix and dilute exactly as directed. One 7 gal CAT 5 kit makes 15 gallons ready to use at the D1 ratio or 20 gallons at D2. D1 gives more gloss and stronger joint sand stabilization; D2 is the leaner, economy ratio.
- Mask off. Siding, garage doors, door thresholds.
- Apply. Use a sprayer to flood joints for stabilizing sealers as directed, then back-roll to remove puddles. A cart such as the MonsterWash Sealer Pail Sprayer Cart keeps the pail mobile and speeds large areas.
- Work in sections with a wet edge to avoid lap marks.
- Second coat only if the TDS calls for it and within the stated recoat window.
- Cure. Cone off the area and tell the client when foot and vehicle traffic are allowed per the TDS.
Which sealer should you use?
| Client wants | Use |
|---|---|
| Natural look, no film | Trident Break Wall |
| Matte, hardened joints | Trident Cyclone |
| Deepest wet look, high gloss | Trident Hurricane CAT 5 |
How does Canadian weather change the process?
- Short season. Most regions have a reliable window from late spring to early fall. Book accordingly.
- Overnight lows. Cure conditions matter as much as application. A cold night after sealing can ruin a coat.
- Spring salt. Rinse driveways well; salt residue affects adhesion and appearance.
- Wet climates. In coastal BC, drying is the bottleneck. Use dry-weather windows.
- Freeze-thaw. Stabilized joints help resist washout from spring melt.
What causes callbacks?
- Sealing damp pavers (white haze).
- Sealing over efflorescence.
- Sand left on the surface.
- Puddled sealer in low spots.
- Rain during cure.
- Poor client communication about cure time.
What does the crew need on the truck?
A complete clean, sand, seal kit for a typical residential driveway:
- Pressure washer with enough flow for your surface cleaner, plus hoses and reels.
- Surface cleaner and a wand with a selection of tips, plus spare nozzles.
- Downstream injector and soaper tip for EffBOMB and OxyShock MAX.
- Pump sprayer for spot treatments like GreaseGone MAX.
- Leaf blower, push brooms and a stiff deck brush.
- Jointing sand in the colour agreed with the client.
- Sealer, mixing pails and a drill paddle for 2-part kits.
- Sprayer or sprayer cart, roller frames and sleeves, and disposable brushes for edges.
- Masking tape and plastic for siding and doors.
- Safety cones, gloves, eye protection and a first aid kit.
Browse sealer applicators for rollers, brushes and tape.
How do you hand the job over to the client?
Leave the client with clear written instructions: when they can walk on it, when they can drive on it, what to avoid while it cures, how to clean it and when to call for a maintenance check. A short handover prevents most "it's ruined" calls, such as a car parked on curing sealer or a lawn sprinkler left running.
Frequently asked questions
How long after cleaning can I seal pavers?
When the pavers and joints are completely dry. That may be the same day in hot dry weather, or several days in BC or in cool weather.
Do I need to re-sand before sealing?
If joints are low, dirty or washed out, yes. Joint-stabilizing sealers need properly filled joints with clean, dry sand.
Can I use polymeric sand with Trident sealers?
Trident pairs its joint-stabilizing sealers with SEK jointing sand, which the sealer hardens. Ask us before combining with polymeric sand.
Should I spray or roll sealer?
Most contractors spray and back-roll for even coverage and to work sealer into joints. Follow the TDS for your product.
How long before I can drive on sealed pavers?
Follow the cure times on your sealer's TDS, and allow extra time in cool weather.
How often should pavers be resealed?
Inspect yearly. Reseal when water stops beading or joints start to wash out.
Where does the product information in this guide come from?
Product details, dilutions, dwell times and performance claims in this guide are taken from the manufacturers' product data and technical data sheets (TDS) as published on the linked StoneSealer Canada product pages (Trident Protects, DryTreat Stain-Proof, HiLow Solutions, Genuine Performance Machinery, ESTEAM, Scrubo, Rampage and StoneSealer Canada). Always read the current label, TDS and Safety Data Sheet before use, and test a small area first. Questions about your project? Email sales@stonesealer.ca.
