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Polyurethane Caulk

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LOCTITE PL Roof Flashing 10-oz Exterior and Specialty Black Paintable Polyurethane Caulk
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for pricing and availability

4.7
395
Features:Waterproof
For Use on:Roofing
Product Set Time:24-48 hours
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LOCTITE PL Poly Concrete and Masonry Sealant 10-oz Exterior and Specialty Limestone Paintable Polyurethane Caulk
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for pricing and availability

4.5
420
Features:Waterproof
Product Set Time:12-24 hours
Clean-up Method:Mineral spirits
LOCTITE PL 10-oz Exterior and Specialty Gray Paintable Polyurethane Self Leveling Caulk
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for pricing and availability

4.5
139
Features:Waterproof
Product Set Time:24-48 hours
Clean-up Method:Mineral spirits
Pella Window and Door Caulk
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for pricing and availability

4.5
82
Features:Waterproof
For Use on:Gutters
Product Set Time:1-4 hours
Tremco Vulkem 116 12 -Pack 10.1-oz Exterior specialty Paintable Polyurethane Caulk
Color: Gray
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for pricing and availability

4.6
130
Features:Waterproof
For Use on:Gutters
Product Set Time:4-8 hours
3M 5200 Marine Adhesive Sealant 3-oz Exterior and Specialty White Paintable Polyurethane Caulk
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for pricing and availability

4.5
60
Features:Waterproof
For Use on:Marine
Product Set Time:24-48 hours
Vulkem 45 SSL 1-quart Exterior and Specialty Limestone Paintable Polyurethane Self Leveling Caulk
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for pricing and availability

4.3
11
Features:Waterproof
Product Set Time:4-8 hours
Clean-up Method:Mineral spirits
DAP Polyurethane Adhesive 12 -Pack 10.1-oz Exterior and Specialty Black Paintable Polyurethane Caulk
Color: Black
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for pricing and availability

Features:Waterproof
For Use on:Gutters
Product Set Time:24-48 hours
Sika  Pro Gray Polyurethane Self Leveling Sealant 10.1 oz
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for pricing and availability

Features:Waterproof
For Use on:Gutters, Roofing
BASF  Sonolastic NP1 Polyurethane Sealant Black 10.1 oz (24-Pack)
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for pricing and availability

Features:Waterproof
3M 5200FC Fast Cure Marine Adhesive Sealant 10-oz Exterior and Specialty White Polyurethane Caulk
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for pricing and availability

4.7
57
For Use on:Marine
Product Set Time:24-48 hours
LOCTITE PL S40 Window, Door and Siding 10-oz Window and Door White Paintable Polyurethane Caulk
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for pricing and availability

4.5
54
Features:Waterproof
Product Set Time:24-48 hours
Clean-up Method:Soap and water
DAP Vulkem 45 SSL 12 -Pack 29-oz Exterior and Specialty Limestone Paintable Polyurethane Caulk
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for pricing and availability

Features:Waterproof
Product Set Time:4-8 hours
Clean-up Method:Mineral spirits
Find everything you need to install, protect and waterproof your tile for years to come. Shop now.
Sherwin Williams Color of the Month for August. Pennywise. Explore more now.

Related Products

Shop Caulk to Seal Gaps and Support Long-Lasting Home Repairs


Caulk helps seal gaps and joints around surfaces to prevent moisture, air and debris from entering your home. Whether working in kitchens, bathrooms or exterior areas, choosing the right caulk supports durable sealing and clean finishes. Explore our selection at Lowe’s to find the right option for your project.


Benefits of Caulk

  • Effective Gap Sealing: Caulk helps fill small openings around fixtures, trim and other surfaces to create a tight seal against moisture and air.
  • Suitability for Multiple Rooms: Specialized products such as bathroom caulk are designed to help manage moisture around tubs, sinks and showers.
  • Flexible Joint Protection: Silicone caulk provides flexibility that allows sealed joints to expand and contract with temperature changes.
  • Smooth Finishing: Grout caulk helps maintain a clean, finished appearance where tile surfaces meet walls or countertops.
  • Color Matching: Products like gray caulk allow you to coordinate sealant color with surrounding tile grout or trim.


Key Features of Caulk

  • Moisture-Resistant Formulas: Options such as silicone caulk help create durable seals in areas exposed to water or humidity.
  • Textured Joint Filling: Sanded caulk is designed to blend with grout lines and textured tile surfaces for consistent appearance.
  • High-Temperature Protection: Fire-rated caulk helps seal penetrations around pipes, wiring and other areas where fire resistance may be required.
  • Tile and Surface Compatibility: Grout caulk is formulated to adhere to tile, ceramic and other common bathroom or kitchen surfaces.


Caulk provides a reliable way of sealing joints and gaps anywhere, from bathrooms and kitchens to the exterior areas of your home. Whether selecting waterproof bathroom sealants, flexible silicone formulas or color-matched grout caulk, these products help maintain durable seals and clean finishes. Pair your project with tools such as caulking guns or other sealants available at Lowe’s to complete your repair or installation.