Below is the table which shows the top 6 best silicone caulk for outdoors 2018. Each and every silicone caulk for outdoors is chosen by our specialist reviewers.

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# 1 - Gorilla Clear 100 Percent Silicone Sealant Caulk, 10 Oz, Clear

Tough, clear, 100% silicone sealant. Gorilla sealant is great for kitchen, bath, window, doors, auto, marine Plumbing, gutters and more! ready for water exposure in just 30 minutes, this waterproof sealant is mold & mildew resistant. The clear silicone sealant and won't yellow, shrink or crack over time! directions: all surfaces should be clean and free of dirt, grease, oil and old sealant. Best if used above 40F. Cut tip to desired bead size. Apply sealant with a caulking gun. Smooth bead immediately after application, before a skin forms. Store in cool, dry location. Clean-up: wipe wet sealant off project…


  • Incredibly versatile 100% silicone sealant that dries translucent clear
  • Best for sealing gaps or cracks between two surfaces; works on window, door, kitchen, bath, gutters, auto, marine and more
  • Indoor/outdoor; 100% waterproof
  • Won't yellow, shrink or crack
  • Mold and mildew resistant


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# 2 - Gorilla 100 Percent Silicone Sealant Caulk, 2.8 Oz., Clear

Gorilla 100% Silicone Sealant, 2.8 oz., Clear


  • Incredibly versatile 100% silicone sealant that dries translucent clear
  • Best for sealing gaps or cracks between two surfaces; Works on window, door, kitchen, bath, gutters, auto, marine and more
  • Indoor/outdoor; 100% Waterproof
  • Won't Yellow, shrink or crack
  • Mold and Mildew resistant


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# 3 - Dap 08641 Clear Silicone Sealant 9.8-ounce

Dap Inc. 10.3-oz. Cartridge, clear, silicone sealant. Protect and seal with 100% silicone rubber. Waterproof, weatherproof, won't crack, crumble or dry out.


  • Protect and seal with 100% silicone rubber
  • Waterproof, weatherproof, won't crack, crumble or dry out
  • Cured sealant is mildew resistant
  • Can be used indoors or outdoors
  • Meets ASTM C920, Specification C719, Class 25


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# 4 - Ge Silicone 2+ Window & Door Caulk, 10.1 Oz. Tube, Clear, Ge5000

GE Silicone 2+ Window & Door 100% Silicone is a 100% waterproof sealant that is rain-ready in as little as 30 minutes. Ideal for a wide range of projects exposed to harsh weather from the attic to the basement. It is permanently flexible with a 10-year mold-free product protection. It will not discolor most metal finishes and adhere to porous materials such as brick and mortar. Guaranteed for as long as you own your home


  • GE 100% Silicone is 100% waterproof and 100% weatherproof
  • 30-minute exposure to rain and water
  • Ideal for exterior weatherproofing and sealing projects including windows, doors, siding, trim, and around vents, wire and pipes
  • Exceeds ASTM C920 Class 25 specifications
  • Permanently flexible to keep gaps sealed, shrink-proof and crack-proof
  • Will not break down due to extreme weather conditions, freeze-proof and sun-proof
  • 10-year mold-free product protection is resistant to stain-causing mold and mildew growth
  • Sealant adheres to more surfaces including metal, masonry, ceramic tile, laminates, glass, porcelain, granite, plastic and wood
  • Will not discolor high-end metal finishes such as chrome, bronze and nickel
  • Excellent adhesion for wet and dry applications


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# 5 - Ge Silicone I All Purpose Caulk, 10.1 Oz. Tube, White, Ge112a

GE Silicone 1 All Purpose is a 100% silicone and 100% waterproof sealant ideal for a wide range of projects exposed to harsh weather from the attic to the basement. Permanently flexible, it stretches and moves with the house and will never break down due to ultraviolet rays or freezing temperatures. Formulation is resistant to unsightly stain causing mildew growth. Guaranteed for as long as you own your home.


  • GE 100% Silicone is 100% waterproof and 100% weatherproof.
  • Permanently flexible to keep gaps sealed, shrink-proof and crack-proof
  • Will not break down due to extreme weather conditions
  • Cured sealant is resistant to stain-causing mold and mildew growth
  • Fast cure with 30-minutes tack free and 12-hour water exposure
  • Ideal for exterior weatherproofing and sealing projects including windows, doors, siding, trim, and around vents, wire and pipes
  • Exceeds ASTM C920 Class 25 specifications
  • Compliant for incidental food contact under FDA 21 CFR177.2600
  • Adheres to most wood, metal, vinyl siding, drywall, plaster, glass and plastic
  • Permanently weatherproof
  • 100% Silicone
  • Typical Uses: windows, doors, siding, trim, molding, baseboards, vents, around wires/pipes and other attic/basement applications
  • Adheres to: Most wood, metal, vinyl siding, drywall/plaster, glass and plastic
  • Meets federal specifications: TT-S-001543A (COM-NBS), TT-S-00230 (COM-NBS), ASTM-C-920 type S, NS, class 25 use NT, G A&O test requirements