top of page

Waterproofing Sealants


PWS-5 Regular,

PWS-8 Extra,

PWS-15 SupeR


Professional® Water Sealant is a unique penetrating water repellent which is manufactured using room temperature vulcanizing (RTV) silicone rubber as the active ingredient. This high performance “gun grade” silicone rubber was developed for use by the military during World War II to meet applications requiring superior durability and resistance to extreme temperatures. It’s use provides all formulations of Professional® Water Sealant with performance characteristics that far exceed those of other penetrating water repellent technologies.

A Superior Alternative to Silanes and Siloxanes


  • Capable of bridging hairline cracks (400% elongation)

  • Protects even the most porous, lightweight concrete block

  • Effectively protects all natural stone and all above-grade porous substrates

  • Provides extremely long lasting, durable protection

Additional Performance Characteristics

  • Breathable (allow for moisture vapor transmission)

  • Penetrating (lines the substrates pore structure)

  • Transparent (dries clear and flat; may slightly enhance some substrates)

  • Withstands wind driven rain

  • Provides masonry structures with protection from damage caused by:

    • Freeze-thaw cycles

    • Efflorescence

    • Calcium Carbonate stains

    • Mold

    • Acid rain

    • Chloride Ion penetration

Available in Three Strengths

Professional Products of Kansas, Inc. manufactures three strengths of Professional® Water Sealant that provide superior protection for all types of porous, above-grade building materials.


PWS-5 Regular

Hard fired brick, poured concrete, most horizontal surfaces

PWS-8 Extra

Very porous brick and concrete, stucco, sandstone and limestone

PWS-15 Super

Split face, fluted, expanded shale and other extremely porous block


MasterProtect H 177


High-performance, breathable, water-based, silane/siloxane water-repellent sealer.

How does MasterProtect H 177 work?

MasterProtect H 177 is a high-performance, water-based, VOC-compliant, clear silane/siloxane sealer designed for dense, vertical masonry surfaces like hard-burnt brick.

Recommended uses:

  • Vertical

  • Interior or exterior

  • Above grade

What are the unique features of MasterProtect H 177?

  • Water repellency extends life of building

  • VOC Compliant for EPA and most regional jurisdictions

  • Transparent and non-staining; does not alter surface appearance

  • Easy to apply

What are the benefits of MasterProtect H 177?

  • Treats brick and mortar providing long-lasting protection against moisture intrusion

  • Excellent water bead so the substrate maintains dry appearance during rainfall

  • Breathability allows interior moisture to escape without damaging sealer


MasterProtect® H 400

Formerly Enviroseal 40


Water-based 40% silane penetrating sealer

How does MasterProtect H 400 work?

MasterProtect H 400 is a water-based, 40% alkylalkoxysilane penetrating sealer. It provides long-lasting protection against moisture intrusion, freeze/thaw cycles, and chloride intrusion.

Recommended uses:

  • Interior or exterior

  • Horizontal

  • Above grade

  • Parking garages

  • Stadiums

  • Bridge decks

  • Concrete highway road surfaces

  • Ramps and barrier rails

  • Many other reinforced concrete structures

What are the unique features of MasterProtect H 400?

  • 40% silane

  • Ideal for traffic-bearing surfaces

  • Does not alter surface appearance

What are the benefits of MasterProtect H 400?

  • Excellent penetration protecting against damage from moisture intrusion and chloride ion penetration

  • Breathable to allow interior moisture to escape without damaging sealer

  • One component for ease of application


MasterProtect H 1000


MasterProtect H 1000

High-performance, clear, breathable, 100% silane penetrating sealer

How does MasterProtect H 1000 work?

MasterProtect H 1000 is a clear, breathable, high-performance, 100% silane, water repellent sealer that achieves highest depth of penetration.

Recommended uses:

  • Interior and exterior

  • Horizontal and vertical

  • Above grade

  • Traffic-bearing concrete substrates

  • Bridge decks and substructures

  • Concrete highway surfaces

  • Ramps and barrier rails

  • Parking garages

  • Buildings

  • Stadiums

  • Many other reinforced concrete structures

What are the unique features of MasterProtect H 1000?

  • No masking of windows necessary and requires no cleaning after application

  • No residue, will not harm glass windows, metal frames, or painted surfaces

  • 100% silane

  • Protects against chloride ion penetration

  • Excellent depth of penetration

  • Protects the structure from damage caused by wind-driven rain

  • Does not alter surface appearance

  • Surface sealer helps reduce efflorescence, atmospheric staining, and mildew

What are the benefits of MasterProtect H 1000?

  • Breathability allows interior moisture to escape without damaging sealer

  • Solvent based, excellent for cold weather applications

  • Superior water repellence so it penetrates deeply and chemically reacts within the pores of concrete to provide long-lasting protection

  • Abrasion resistant so it provides long-lasting protection to horizontal substrates subject to traffic, such as bridge decks and highway surfaces​






LUSTER SEAL 350 is an acrylic curing compound and cure & seal that protects and enhances the appearance of concrete with a clear, non-yellowing film that is more durable than standard polymer blend cure and seal products. LUSTER SEAL 350 is formulated in an exempt solvent carrier formulated for use in VOC-regulated areas. LUSTER SEAL 350 is designed to enhance the color of stamped concrete, exposed aggregate, and colored concrete pavers, making these surfaces look deeper and richer in appearance. It provides protection against the damaging effects of traffic, weather, and de-icing salts. Applied properly, LUSTER SEAL 350 will not turn white in the presence of moisture. LUSTER SEAL 350 gives concrete a satin finish that highlights the color and texture of surfaces. LUSTER SEAL 350 can be tinted with Euclid Universal Color Packs, which are available in 33 standard colors.

Features & Benefits

  • Ensures proper curing of new concrete

  • Pure acrylic polymer ensures no yellowing and a more durable seal

  • Enhances the appearance of colored concrete

  • Slower drying than products based on acetone or tert-butyl acetate exempt solvents

  • Can be tinted with Euclid Universal Color Packs to even out variegated concrete surfaces


  • Stamped, colored concrete

  • Terrazzo

  • Driveways and sidewalks

  • Acid-stained concrete

  • Concrete pavers

  • Decorative concrete overlays

Specifications / Compliances

  • ASTM C1315, Type 1, Class A

  • ASTM C309 Type 1, Classes A & B

  • Complies with Federal AIM rule VOC regulations, and with VOC standards in the OTC and LADCO states


LUSTER SEAL 350 is packaged in 55 gal (208 L) drums, 5 gal (18.9 L) pails, and in cases of 1 gal (3.8 L) jugs (4 jugs per case).


Clear Multi-Surface Waterproofer


Proven to waterproof wood, concrete and brick. Use as a wood sealer, brick sealer, or for concrete waterproofing.


Key Features

  • Prevents Water Damage

  • Allows Wood to Gray Naturally


Gator Seal Wet Look


GATOR SEAL WET LOOK SEALER is made from acrylic-based polymers. GATOR SEAL WET LOOK SEALER penetrates deep into the concrete pavers, thus reducing the oil and dirt penetration, as well as protecting them from the corrosion of de-icing salt. Specifically formulated to be used on unsealed surfaces only.

bottom of page