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  • Overview
  • Specs
  • Coverage Rate
  • Application

Clear-Seal Low Gloss is a Heavy Duty Urethane Acrylic Sealer

Rainguard Clear-Seal™ is a premium blend of urethane and acrylic which results in a tough, durable and breathable low gloss sealer.  It provides a nice looking low gloss finish for concrete, stone, masonry and wood surfaces.  It is a water based, low VOC, single-component, self cross-linking clear urethane acrylic blended water based sealer. Clear-Seal™ is resistant to UV, chemical spills, staining agents and wear due to heavy foot traffic.  It makes it an excellent choice for homeowners wanting to upgrade the look of their deck, patio or walkway (not recommended surfaces subject to vehicular traffic).

Clear-seal is available in both a low gloss and high gloss formula in 1 gallon and 5 gallon pails.

Where is Clear–seal typically used?

  • Construction & Remodel Projects:   Commercial floors subject to light to medium foot traffic, walkways, protection of outdoor and indoor painted wall murals
  • Homeowner projects:  Decks, patios, porches, walkways, fences

Why Clear-Seal Urethane Sealer?

  • Heavy duty Impact and wear resistant
  • Non-yellowing formulation
  • Resistant to stains, acids, bases, gasoline, alcohol, oil (vegetable & motor)
  • Resists UV rays – won’t yellow
  • Environmentally-friendly, low odor, Non-hazardous
  • Water clean-up
  • Excellent adhesion
  • Fast dry time and cure time
  • No pot-life issues – one component self-cross-linking system
  • Applying first coat of Rainguard Micro-seal water repellent adds to performance of Clearseal on unpainted porous surfaces
  • Specified by architects in CSI Division:  099123


Color Clear
Sheen/Gloss Level Low gloss
Dry To Re-Coat 60 Minutes
#Coats Recommended 1 – 3 coats depending on level of gloss and protection desired
Back in-service time 24 hours to walk-on
Application method Low pressure hand pump or airless sprayer, brush, t-bar, lamb’s wool applicator
Where Can it be Used All Interior|Exterior architectural surfaces
Apply to New Concrete 10 days
Low Application Temperature 50F|10C Surface & Air
 Base  Water
VOC Content <50 g/L
Use on Material All masonry, concrete and wood surfaces
Warranty Available 5 year warranty available –  download warranty application to register, see DOCUMENTS tab above

Leed 4.2 (1) point credit available Meets LEED and SQAMD low VOC requirements
Porous Surfaces 200-300
Dense Surfaces 300-400
*Textured surfaces Decreases coverage rates


Temperature (surface|air) 50F to 90F (10C to 35C) and at least 5F above dew point
Moisture of substrate Less than 15%
Humidity Less than 90%
Rain No rain 48 hrs prior to, 48 hrs after application
Cure time for newly poured concrete Apply 10 days after pour
Application method Use low pressure hand pump or garden sprayer, t-bar, brush, lambs wool applicator

1.CLEAR-SEAL Acrylic Urethane Sealer should be applied using either brush, t-bar, lamb’s wool applicator, or most pump-up sprayers. We do not recommend using a roller to apply, as this may allow too much air, causing bubbles to stay in the film.
2.At time of application, moisture content of all surfaces should be 30%or less as measured with an electronic moisture meter.
3.Establish that air, surface and material temperatures are above 40°F (4.4°C) and at least 5°F above the dew point prior to painting. Do not apply at temperatures below 40°F or when temperatures are expected to drop below 40°F within 48 hours of application. Do not apply if rain, snow, or lower temperatures are expected within 48 hours. Do not apply if relative humidity is greater than 80%.
4.Allow at least 1 hour or until tack-free before applying a second coat.
5.Wait 24 hours before opening up to light to moderate traffic, and 72 hours before heavy traffic,

1. All surfaces to be coated should be clean of any dirt and grime, efflorescence, lime run, form oils and release agents, grease, mud, excess mortar, and mold and mildew, etc.
2. All cracks should be pointed or caulked. All voids, bee holes, masonry surface defects and openings such as conduits, pipes, drains, door frames, vents, air conditioner openings, electrical openings, control joints, or any dissimilar materials should be repaired using urethane or other approved patching.

Store materials in a well-protected area between 45° and 90°F. Avoid freezing temperatures, direct sunlight, and moisture. Keep away from heat sources.