Best Water Sealer In January 2025

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In this review, we evaluate the Best Water Sealer available today. We have also included a comprehensive guide that helps you pick the best product. We hope that by going through the top 10 Best Water Sealer reviews below, you can effectively narrow down your choice and find the most appropriate one you need.

To help you in your search, we have completed this list of the Best Water Sealer.

Top Rated Best Water Sealer Of 2025

Rank Product Name Score
1
Thompsons TH.010100-18 Clear Multi-Surface Aerosol Waterproofer
Thompsons TH.010100-18 Clear Multi-Surface Aerosol Waterproofer
9.7
2
Thompsons WaterSeal TH.A21711-16 Advanced Natural Wood Protector, gallon
Thompsons WaterSeal TH.A21711-16 Advanced Natural Wood Protector, gallon
9.5
3
THOMPSONS WATERSEAL 21802 VOC Wood Protector, 1.2-Gallon
THOMPSONS WATERSEAL 21802 VOC Wood Protector, 1.2-Gallon
9.1
4
Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce
Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce
8.8
5
THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain, Woodland Cedar
THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain, Woodland Cedar
8.6
6
THOMPSONS WATERSEAL TH.041851-16 Transparent Waterproofing Stain, Woodland Cedar
THOMPSONS WATERSEAL TH.041851-16 Transparent Waterproofing Stain, Woodland Cedar
8.3
7
Thompson's TH.042841-16 Waterseal Waterproffing Stain - Semi Transparent, Acorn Brown, 1 gallon
Thompson's TH.042841-16 Waterseal Waterproffing Stain - Semi Transparent, Acorn Brown, 1 gallon
8.1
8
Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer, Water
Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer, Water
7.8
9
THOMPSONS WATERSEAL TH.043841-16 Solid Waterproofing Stain, Acorn Brown
THOMPSONS WATERSEAL TH.043841-16 Solid Waterproofing Stain, Acorn Brown
7.5
10
5-Gal. SX5000 Penetrating Clear Solvent-Based Silane-Siloxane Concrete & Masonry Sealer, Water Repellent, Salt
5-Gal. SX5000 Penetrating Clear Solvent-Based Silane-Siloxane Concrete & Masonry Sealer, Water Repellent, Salt
7.2

1. Thompsons TH.010100-18 Clear Multi-Surface Aerosol Waterproofer

1
9.7/10 our score

  • Clear waterproofer
  • 10100: 12 oz aerosol
  • Will effectively seal any porous material against damage by water, including concrete, brick, stone, plaster, wood, and asbestos
  • Is unsurpassed as a penetrating sealer for concrete hardening and dust-proofing, and meets astm c309 specifications for concrete curing
  • When used as an additive to, or under-seal for solvent thinned paints, it shields paint against weather.

2. Thompsons WaterSeal TH.A21711-16 Advanced Natural Wood Protector, gallon

2
9.5/10 our score

  • One day project - applies to both damp or dry wood in just one coat
  • Exceptional, long lasting beading and waterproofing
  • Long-lasting coating resists mildew growth, uv damage and fading
  • Waterproofer product
  • Water-based for easy soap and water clean up
  • Maximum strength one coat waterproofer

3. THOMPSONS WATERSEAL 21802 VOC Wood Protector, 1.2-Gallon

3
9.1/10 our score

  • Brand name: thompson's water seal
  • Item weight: 9.65 lb
  • Country of origin: china
  • Item dimensions: 4.1"l x 6.6"w x 11.0"h

4. Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce

4
8.8/10 our score

  • Sensor-safe, noncorrosive rtv silicone gasket material formulated specifically for water pumps and thermostat housings
  • Superior adhesion and flexibility, can be used as a gasket maker or dressing
  • Temperature range: -65f to 500f (-54c to 260c) intermittent
  • Suggested applications: water pump and thermostat housings
  • Highest water-glycol resistance available in an rtv silicone

5. THOMPSONS WATERSEAL TH.042851-16 Semi-Transparent Waterproofing Stain, Woodland Cedar

5
8.6/10 our score

  • Coating resists mildew and uv damage
  • Exceeds industry standard astm d-4446 for waterproofing wood
  • Advanced polymers provide fade resistant color
  • Applies to freshly cleaned damp or dry wood
  • Prevents water damage

6. THOMPSONS WATERSEAL TH.041851-16 Transparent Waterproofing Stain, Woodland Cedar

6
8.3/10 our score

  • Coating resists mildew and uv damage
  • Advanced polymers provide fade resistant color
  • Applies to freshly cleaned damp or dry wood
  • Exceeds industry standard astm d-4446 for waterproofing wood
  • Prevents water damage

7. Thompson's TH.042841-16 Waterseal Waterproffing Stain - Semi Transparent, Acorn Brown, 1 gallon

7
8.1/10 our score

  • Exceeds industry standard astm d-4446 for waterproofing wood
  • Advanced polymers provide fade resistant color
  • Formula is moderately pigmented to add beautiful color, but still show some wood texture and grain.
  • Applies to freshly cleaned damp or dry wood, color: acorn brown
  • Exterior wood stain and sealer that provides complete outdoor wood protection
  • Prevents water damage, coating resists mildew and uv damage

8. Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer, Water

8
7.8/10 our score

  • Use on driveways, garages, basements, patios, pool decks. covers up to 250 sqaure feet per gallon per coat.
  • Resists deicing salt/chloride damage, freeze thaw damage, spalling, pitting, cracking, mold, mildew, efflorescence
  • An industrial-grade, water-based, silane/siloxane engineered to reduce water and moisture intrusion, while protecting concrete or masonry substrates from chlorides and deicing salts.
  • Excellent water beading effect, excellent penetration, easy application with sprayer, roller or brush, no appearance change - dries clear, low vocs
  • Reduces water ingress, moisture intrusion and asr

9. THOMPSONS WATERSEAL TH.043841-16 Solid Waterproofing Stain, Acorn Brown

9
7.5/10 our score

  • Coating resists mildew and uv damage
  • Exceeds industry standard astm d-4446 for waterproofing wood
  • Prevents water damage
  • Applies to freshly cleaned damp or dry wood
  • Advanced polymers provide fade resistant color

10. 5-Gal. SX5000 Penetrating Clear Solvent-Based Silane-Siloxane Concrete & Masonry Sealer, Water

10
7.2/10 our score

  • Resists damage cause by de-icing salts and freeze/thaw cycles.
  • Superior efflorescence and strong alkali resistance. stops concrete dusting.
  • Lasts up to 10 years and won't change the look of the concrete.
  • Penetrating (2") solvent based silane/siloxane water repellent. interior/exterior.
  • Provides excellent resistance to mold, mildew, and fungus.

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