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  • Overview
  • Specs
  • Coverage Rate
  • Application

Plugger 25 Masonry and Wood Acrylic Sealer

Rainguard Plugger 25™ Acrylic Sealer is a versatile, high performance modified silicone acrylic clear water repellent and sealer for application on painted and unpainted, vertical or horizontal concrete, masonry, brick or wood surfaces. Plugger 25 has Rainguard’s exclusive Micro-lok™ nano based technology for improved water repellent and stain resistant performance.

On unpainted surfaces, Plugger 25™ helps keep moisture out and resists staining for easier cleanup. It can be used as a primer to seal previously painted or wood substrates. On painted surfaces, Plugger 25™ can help solve moisture problems with a clear, protective coating with little change in surface appearance. It can be used as a primer to seal previously painted or wood substrates.

Plugger comes in both a 5-year 25% formula and a 3-year 10% formula, depending on the level of protection and length of warranty desired.

Where is Plugger 25 typically used?

  • Construction & Remodel Projects:   Exterior building walls
  • Homeowner projects:  Exterior brick|stucco walls, decks, patios, porches, walkways, fences

Why Plugger 25 Masonry & Wood Sealer?

  • Labor and material water repellent warranty available for 3 years
  • Seals and binds chalked surfaces and improves adhesion of topcoat materials
  • Helps prevent efflorescence
  • Stain resistant
  • May be applied to previously painted and properly prepared surfaces
  • Easy to use Concentrates available that saves money, time and easier on the environment!
  • Protects wood from swelling, shrinking or grain raising
  • May be applied to concrete or stucco as curing agent to promote hardening
  • 100% Eco-friendly: low VOC
  • Minimal change in surface appearance, UV resistant – will not yellow


Color Clear, minimal change in appearance
Sheen/Gloss Level Flat sheen
Dry To Re-Coat 1 hour
#Coats Recommended 1 (2 coats if especially porous)
Back in-service time 2 hours walk on
Application method Low pressure hand pump or airless sprayer
Where Can it be Used All Interior|Exterior and Vertical|Horizontal painted and unpainted surfaces
Apply to New Concrete 48 hours
Low Application Temperature 40F|4.4C Surface & Air
 Base  Water
VOC Content <20 g/L
Use on Material Concrete, brick, masonry, stucco, block. natural stone, EIFS, wood, painted surfaces
Warranty Available 5 years material/labor standard –  download warranty application to register, see DOCUMENTS tab above
Leed 4.2 (1) point credit available Meets LEED and SQAMD low VOC requirements
Porous masonry 60-100
Dense masonry 100-150
Succo/EIFS 150-200
Wood 175-200
Painted Surfaces 400
Fluted, scored block, raked joints Reduces coverage rates 20%-30%


Temperature (surface|air) 40F to 90F (4.4C 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, 12 hrs after application
Cure time for newly poured concrete Apply 48 hrs after pour
Application method Use low pressure hand pump or garden sprayer


CR-1527 32 oz 5 Gal Empty 32oz into 5 gal pail, fill with water, stir (19 parts water to 1 part Plugger 25)
CR-1527PK 32 oz 30 Gal Case of 6 quarts CR-1527 see that sku for instructions


Horizontal Concrete Surfaces
Apply two saturation coats to damp concrete to assist the
curing and hardening process. Apply one saturation coat to ex-isting concrete surfaces to dustproof surfaces. Remove excess standing or ponding materials with a roller. Caution: PLUGGER 25 is not recommended for application to surfaces subject to wheeled traffic.

Apply one saturation coat with run-down and back roll material. Apply second saturation coat when the first coat is dry.

May be applied to stucco or plaster during the curing process or when fully cured. Apply one saturation coat and back roll materi-als. Apply second coat when the first coat is dry.

Chalked Surfaces
Apply one coat to chalked surfaces. Allow material to dry
and check surface for chalking. Apply a second coat to surfaces as needed to control remaining surface chalk.

Surfaces shall be clean and bare. Pre-treat knots with a small amount of material. Apply a minimum of one saturation coats to wood surfaces. Apply second coat when the first coat is dry.

Masonry and Concrete
All surfaces to be coated shall be structurally sound, clean, and dry, free of laitance, accumulated dirt and grime, efflorescence, lime run, form oils and release agents, grease, mud, excess mor-tar, and mold and mildew, etc. Remove loose and peeling paint, excessive chalk, and other contaminants from surfaces. Dry brushing is the preferred method for cleaning surfaces prior to material application. However, chemical, mechanical, abrasive, or high-pressure water blasting may be used. Allow wet, cleaned surfaces to dry for 2-3 days before application of materials.

EFIS and Other Surfaces
Surfaces shall be structurally sound, clean, and dry. Clean EFIS surfaces following manufacturer’s recommendations.

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.