Frequently Asked Questions About Paver Sealer

All three have different jobs. The container label gives product-specific directions and warnings; the product or technical data sheet (PDS/TDS) covers compatible surfaces, preparation, mixing or dilution, application, coverage and cure; the Safety Data Sheet (SDS) covers hazards, PPE, first aid, spills, storage, disposal and transport.

Match the exact product name and batch. If the documents conflict or cannot be matched, stop and contact TPSS. Do not average instructions or substitute another product’s sheet.

Start with finish, chemistry and substrate—not just the container size.

• UltraGloss SX: single-component 1K urethane; high-gloss wet look.
• ULTRA SEAL Classic Gloss: two-component water-based urethane; classic-gloss wet look with joint-sand stabilization.
• Ultra Seal Eco Shield Dry Look Penetrating Concrete Sealer: penetrating protection with a natural, dry-look finish on compatible concrete and masonry.
• Ultra Seal Penetrating Natural Stone Sealer: penetrating protection intended to retain a natural appearance on compatible stone.
• Ultra Seal Enhancing Impregnating Stone Sealer: color-enhancing treatment for compatible stone, tile, brick, pavers and cementitious surfaces.

Use the Sealer Finder, then confirm the exact current label and matched PDS/TDS and SDS before ordering.

A 1K sealer is supplied as one component. UltraGloss SX is a 1K system—do not add a catalyst or hardener. A 2K sealer has separate components that must be combined exactly as directed. ULTRA SEAL Classic Gloss is a 2K system with a finite working time after mixing.

Never transfer mixing, dilution or cure instructions between the two. Use the manufacturer’s current 1K urethane sheet and 2K urethane sheet only after matching them to the current TPSS-branded product and batch; the container label controls the product in hand.

Film-forming sealers leave a protective film that can deepen color, add sheen and—in products designed for it—help stabilize joint sand. Film build, trapped moisture, recoat timing and wet traction must be controlled.

Penetrating treatments absorb or react within a porous mineral surface and usually preserve a natural or dry look. They require an absorbent, compatible substrate and careful removal of unabsorbed material. Neither category is universal for every stone, coating history or location.

Yes. Use a representative, inconspicuous area with the same preparation, application rate, coat count and cure conditions planned for the project. Check adhesion, absorption, color, gloss, residue, traction and compatibility with any old coating or joint material.

For a penetrating sealer, unabsorbed residue or uneven darkening is a stop sign. For a film-forming sealer, whitening, softening or poor bond is a stop sign. Approve the test only after the product reaches its stated evaluation or cure time.

Performance depends on the exact product. Current technical sheets describe benefits such as reduced water absorption, color enhancement, joint-sand binding and resistance to stains, UV exposure or surface wear.

A sealer does not make a surface stain-proof, maintenance-free, algae-proof, slip-proof or immune to moisture and traffic. Clean spills promptly, maintain drainage and follow the product-specific maintenance instructions.

Identify the substrate and any old coating. Remove dirt, grease, organic growth, efflorescence, cleaner residue and failed film; correct drainage and joint defects; protect adjacent materials; rinse thoroughly; and let the surface reach the moisture condition required by the exact label.

A surface that looks clean may still contain moisture, salts or incompatible coating. Finish with a representative test patch. See the Learn hub for preparation and troubleshooting guidance.

There is no catalog-wide 30-day rule. Confirm the paver manufacturer’s and installer’s requirements, the cure of any cast-in-place concrete, grout or repair material, the condition of the joints, visible efflorescence and moisture, and the sealer label.

Do not seal over visible efflorescence, saturated joints or uncured repair materials. The correct wait is the longest applicable requirement for the actual assembly and product.

Only when the exact current label or matched TDS allows it. Current manufacturer sheets for the 1K and 2K urethane families and for penetrating natural-stone and concrete/brick treatments permit damp-surface application under defined conditions. That is not catalog-wide permission.

“Damp” does not mean standing water, saturated joints, active runoff or a surface facing rain or dew before cure. Some coatings require a fully dry surface, so same-day cleaning and sealing is a product- and jobsite-specific decision—not a promise.

Follow the exact label and measure the surface temperature, not only the air. Current manufacturer sheets for the 1K and 2K urethane families specify application above 50°F. The penetrating natural-stone and concrete/brick sheets specify above 32°F and rising.

Do not apply when rain, irrigation, dew or condensation may reach the surface before cure. Heat, direct sun, wind, shade and humidity can shorten working time or delay cure even when temperature is within range.

Only as the exact container label directs. UltraGloss SX is a single-component product; do not add a catalyst or hardener. ULTRA SEAL Classic Gloss is a two-component system; combine Parts A and B and use only the water adjustment specified on its current label. Penetrating products may have different ready-to-use or application instructions.

Do not guess ratios, interchange volume and weight, add a different catalyst, or retemper mixed material after its working time expires.

Coat count is product-specific. Current 1K and 2K urethane directions use controlled film coats, while penetrating concrete and stone treatments use an absorption or saturation procedure rather than building a surface film.

More is not better. Excess material can cause puddles, unabsorbed residue, slow cure, whitening, tackiness and reduced wet traction. Apply only within the exact label’s rate, recoat window and maximum build.

Published coverage is planning data, not guaranteed yield. Current manufacturer sheets list approximately 200–300 square feet per gallon for the 1K urethane family, 200–400 for the 2K water-based urethane family, 200–300 for the penetrating concrete/brick treatment and 800–1,000 for the penetrating natural-stone treatment. Use a range only after matching the sheet to the exact TPSS product.

Porosity, surface profile, joint width and depth, coat build and application loss can change consumption substantially. Measure actual yield on a test area, then use the Coverage Calculator and include a reasonable project reserve.

“Dry to touch” is not the same as recoat time, foot traffic, vehicle traffic or full cure. For example, current manufacturer sheets for the 1K and 2K urethane families include separate milestones such as 24 hours before foot traffic and 72 hours before vehicle traffic under their published conditions.

Use those times only for the exact matched product. Cool temperatures, shade, high humidity, damp joints and heavy film can extend cure. Protect the area from people, vehicles, sprinklers, pool splash, rain, dew and debris until the label’s return-to-service requirements are met.

Use only the tools approved by the exact label or TDS. Current sheets variously list brush, roller, airless sprayer, garden sprayer or pump sprayer. The correct tip, equipment materials, pressure and film control depend on the product.

Back-roll only when the product procedure calls for it. Do not use equipment contaminated with an incompatible solvent, cleaner or coating, and never assume a sprayer approved for one product is suitable for another.

There is no universal sand requirement. Choose polymeric or non-polymeric joint material from the paver system, joint width and depth, drainage, traffic and compatibility instructions.

A film-forming sealer designed for sand stabilization can help bind properly installed joint sand. It does not replace correct sand depth, compaction or joint repair, and it should not be used to bridge empty, eroded or unstable joints.

Any sealed surface can become slippery when wet, especially when it is smooth, glossy, over-applied or contaminated. There is no responsible catalog-wide “non-slip” guarantee.

Test a representative area wet and dry, maintain drainage and control film build. Use a traction additive only when it is compatible with the selected product and allowed by the label. Pool decks, steps and slopes require a project-specific traction assessment.

No sealer, cleaner or stripper should be described as harmless across every exposure route. Keep people and pets out of the work area and away until the product’s return-to-service requirements are met. Protect vegetation, glass, plastic, metals and water features as directed.

Prevent product, wash water and stripping residue from entering pools, storm drains or surface water. Do not rely on a pool filter to remove sealer. The current SDS for the exact product controls handling and environmental precautions.

The current SDS for the exact branded product and batch—not a product page, TDS or another sealer’s SDS—controls PPE, first aid, spills, storage, disposal and transport. TPSS did not publicly link an exact current SDS for every active sealer when this page was reviewed, so request the matching SDS from TPSS before opening or using the product.

Do not generalize across water-based urethanes, penetrating treatments, cleaners and solvent-based enhancing products. Until the exact SDS is in hand, do not use the product. Then follow its requirements for ventilation, eye and skin protection, respiratory protection, ignition control and emergency response.

Only after identifying the existing chemistry, confirming that the film is sound and verifying compatibility with a test patch. If the old sealer is white, hazed, peeling, soft, tacky or contaminated, do not bury the problem under another coat.

The current ULTRA SEAL package label directs removal of hazed or peeling prior sealer before recoating. A bonded coating may still require controlled cleaning, abrasion or a compatible recoat window. If the existing product is unknown, stop and use the troubleshooting guide or contact TPSS.

Common causes include trapped moisture, dew or rain before cure, puddling or excessive film, an incompatible old coating, cleaner or salt residue, an incorrect mix or dilution, a missed recoat window, or unsuitable temperature and humidity.

The symptom alone does not prove the cause. Restrict traffic, stop adding product and document the exact product and batch, substrate, old coating, preparation, application rate, coat count, weather and timeline before choosing a repair.

Yes, after the sealer has reached the label’s maintenance or return-to-service time and only with a surface-safe method. Test first and use a tip, pressure and distance that will not etch the pavers, cut out joint sand or lift the coating.

Pressure washing can remove loose failed film, but it is not a controlled substitute for removing a bonded incompatible coating. Avoid repeated aggressive washing that shortens coating life or damages the substrate.

Do not use a calendar alone. Inspect a clean, dry surface for loss of water repellency, visible wear, loss of the desired appearance, reduced stain resistance and the condition of the existing film.

Before recoating, confirm chemistry and compatibility and complete a test patch. Penetrating and film-forming systems wear differently, and traffic, UV exposure, cleaning frequency, drainage and climate can shorten or lengthen the maintenance cycle.

Send the exact product name, size and batch; clear photos of the container label and affected area; substrate type and age; prior sealer history; cleaners or strippers used; joint-sand details; measured area and gallons used; coat count; tools; mix or dilution; application timestamps; surface and air temperature; humidity; rain, dew or irrigation; and timing of foot or vehicle traffic.

Those facts allow a reliable diagnosis. Call 813-308-9202 or use the contact page before adding more product to a failed or uncertain system.