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Internet # 205035373

Model # 1637184

Store SKU # 1000168795

QUAD Advanced Formula 10 fl. oz. Gray #540 Exterior Window, Door, and Siding Sealant (12-Pack)

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  • All-weather, self-tooling, permanently flexible formula sealant
  • Designed for diverse window, door, siding and trim applications
  • Resists dirt, dust and bonds without primer to common substrates
  • View More Details

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Product Details

About This Product

Arm yourself against the elements with OSI QUAD Window, Door & Siding Sealant. OSI QUAD Window, Door & Siding Sealant (1638674) is an all-season formula designed for superior caulking performance on exterior window, door and siding applications, fiber-cement and vinyl siding, PVC trim, and much more. It can be applied to wet or dry surfaces, even at freezing temperatures and, unlike other sealants, it resists dirt and dust collection, yellowing and water washout. OSI QUAD bonds without a primer to most common substrates like cedar, painted or stained woods, fiberglass, vinyl, coated aluminum, steel, metal, brick, masonry and concrete. With resistance to UV and extreme temperatures (20°F to 120°F) and proven wet surface application, OSI QUAD is the versatile and durable choice for professional contractors. OSI QUAD is self-tooling and once cured is paintable with latex paints. Our color specialists work closely with leading window, door and siding manufacturers to ensure perfect color matches. OSI QUAD is composed of elastomeric polymers and high quality synthetic resins. OSI offers an arsenal of adhesives, caulks, and outdoor construction sealants for the true professional. OSI: Tougher Than the Elements.

Highlights

  • Click here to find your exact OSI Color Match
  • Strong adhesion to primary window, door and siding building materials
  • 100% waterproof with proven wet and cold surface application
  • Class 25 for long-term elasticity and durability in any condition
  • Self-tooling formula saves time and provides professional finish every time
  • Paintable to perfectly blend in with surrounding materials
  • Superior resistance to UV, water, dirt, dust, and extreme temperatures (20°F to 120°F)
  • Match with any color: Free online OSI color match chart tool offers a match for 9,200+ manufacturer colors
  • VOC and CARB Compliant
  • Quad Window & Door System: Use in conjunction with OSI QUAD Foam and OSI Butyl Flash for the toughest air and moisture barrier to maximize energy efficiency
  • OSI offers online and offline resources like best practice guides, and installation programs with limited warranty
  • Need help choosing the right Caulk? Click Here for Home Depot's Buying Guide!
  • Click Here for the How to Caulk Project Guide
  • Due to individual screen limitations, colors shown here may not accurately reflect OSI Quad sealant colors.
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Product Information

Internet # 205035373

Model # 1637184

Store SKU # 1000168795

Additional Resources

Shop All OSI
From the Manufacturer

Specifications

Individual size (oz.): 10 oz

Dimensions

Individual size (oz.)

10 oz

Details

Caulk and Sealant Application

Window & Door

Caulk and Sealant Type

Solvent

Color/Finish

GRAY #540

Dry Color Family

Gray

Dry to Touch (min.)

40 min

Features

Fire and High Heat Resistant, Moisture Resistant, Paintable, Permanently Flexible

Interior/Exterior

Exterior

Number of Tubes Included

12

Returnable

90-Day

Sealant Form

Standard Tube

Transparency

Solid

Warranty / Certifications

Manufacturer Warranty

N/A

Questions & Answers

Does it work on brick and block
ByOct 14, 2026
1 Answer | 
Answer This Question

Thank you for your question. Yes, OSI QUAD is recommended for use on brick and block surfaces. Please ensure the surface is clean, sound, and free of contaminants before application.

By|Oct 15, 2026


    Which Grey is the closest match to Timber Tech's Castle Grey?
    ByOct 13, 2026
    1 Answer | 
    Answer This Question

    Thank you for your question. Unfortunately, we need the exact product details to recommend the closest matching OSI QUAD Sealant color. Once you have this information, you can visit www.ositough.com and select the Color Match tab to look for a suitable match. If you need further assistance, please contact our team at 1-800-624-7767.

    By|Oct 17, 2026


      Can this be used over oil based semi transparent stain? Will it adhere to that?
      ByOct 6, 2026
      1 Answer | 
      Answer This Question

      Thank you for your question. OSI QUAD is not specifically recommended for application over oil-based semi-transparent stain without testing. The surface must be clean, dry, and free of oils or other contaminants that could interfere with adhesion. If the stain cannot be removed, we recommend testing the sealant's adhesion on the stained surface before proceeding with the entire project.

      By|Oct 6, 2026


        If this cannot be used if stucco has polystyrene insulation foam base material underneath it, do you offer a product that will work if the stucco does have polystyrene insulation foam base?
        BySep 5, 2026
        1 Answer | 
        Answer This Question

        Thank you for your question. Not knowing the specific details of your project makes it difficult to say the Loctite Clear Silicone Waterproof Sealant is suitable. Please give us a call at 1-800-624-7767 and let us know the details of your application so we can help you.

        By|Sep 7, 2026


          Can it be sanded to smooth itt after it’s cured?
          ByAug 27, 2026
          1 Answer | 
          Answer This Question

          Thank you for your question. OSI QUAD is not recommended to be sanded.

          By|Aug 27, 2026


            On the back of tube is says to not use on field or butt joints on pre-finished fiber-cement siding - however, the website says this is ok to use on fiber-cement siding. Which is true?
            ByAug 23, 2026
            1 Answer | 
            Answer This Question

            Thank you for your question. OSI QUAD is not recommended to be used for the project described.

            By|Aug 24, 2026


              Can this be used directly over Behr Marquee exterior satin enamel on trim without scuff sanding?
              ByJul 23, 2026
              1 Answer | 
              Answer This Question

              Thank you for your question. OSI QUAD is not recommended for use in the manner described. For best adhesion and performance, painted surfaces should be sanded before applying the sealant.

              By|Jul 24, 2026


                Can this caulk be worked with a tool
                ByJul 11, 2026
                1 Answer | 
                Answer This Question

                Thank you for your question. OSI QUAD does not require tooling nor recommended. If you need more information on our product, please visitwww.ositough.com and review the product's technical data sheet.

                By|Jul 14, 2026


                  Viewing 1-8 of 258

                  Customer Reviews

                  4.5 out of 5

                  • 4.5 out of 2,207 reviews
                  • 81% recommend this product
                  Filter by:
                  Showing 1-10 of 2,207 reviews
                  Its a fine black caulking. It does get a little grainy at times and one of 10 tubes blew out the back.
                  by
                  Response from OSI - Henkel CorporationSep 21, 2026
                  Thank you for choosing OSI. OSI
                  OSI Quad is my absolute go to sealant especially for outdoor projects. I'm a siding contractor and I wouldn't use anything else for sealing around window and door openings. Once it dries it forms a very strong yet flexible bond and its 100% water tight. There are few basic colors available at the HD store but the manufacturer actually makes color coordinated sealants which match factory siding colors which are available from specialized siding suppliers.
                  by
                  Response from OSI - Henkel CorporationSep 15, 2026
                  Thank you for being a valued OSI customer. OSI
                  Fast drying
                  [This review was collected as part of a promotion.] Overall, It is an exceptional, rock solid choice for exterior waterproofing if you have the caulking gun skills to lay a clean bead on the first try, if you are a beginner who relies on smoothing out your caulk lines with your finger, the fast drying, sticky nature of this product will likely cause frustration.
                  by
                    These vents are simple and easy to install and prevent any rain, snow or moisture from entering the room. They provide great ventilation and ensure air movement when ventilated on at least 2 sides of the room. Great product and great price!!
                    by
                    Response from OSI - Henkel CorporationAug 24, 2026
                    We are glad that you are happy with our product. OSI
                    Very strong & durable!
                    [This review was collected as part of a promotion.] I received this complimentary from Influenster in exchange for my honest review and so far it seems to be a pretty solid product! It applies easily but just like with any caulking/sealant, it does take a steady hand because it dries very quickly! I used it to seal around my drafty old windows where the old caulking had cracked and it went on super smooth and cured with a clean and flexible finish. It has a really sticky consistency which makes it bond really well to the casing and gives the windows a much cleaner look. So far it’s held up really well in various temperatures and bad weather. Definitely a professional grade external sealant that will come in handy for various different projects around the house!
                    by
                      This customer chose to rate the product and not provide text.
                      by
                      Response from OSI - Henkel CorporationAug 14, 2026
                      Thank you for choosing OSI. OSI
                      • Verified Purchase
                      Great product
                      [This review was collected as part of a promotion.] This sealant is great for doors, windows and around siding openings. It holds it texture while also holding up to the weather and remains flexible.
                      by
                        Works.
                        [This review was collected as part of a promotion.] Osi quad window, door and siding sealant white works great. I used it to seal my windows. It goes on smooth and looks great. Dries pretty fast and smell is not too bad. Very easy to use.
                        by
                          Sealant
                          [This review was collected as part of a promotion.] My husband did a small section around our back door to test it out. He usually buys another brand, and so far, this is holding up well to the weather, and it's a pretty bright white. He says it's not as thick as the kind he's used to(not enough body). But he likes how easy it comes off his hands compared to others.
                          by
                            It’s sticky
                            [This review was collected as part of a promotion.] Love quad. Can’t go wrong with it. Don’t crack and seals great. It’s very sticky. Spray soppy water on top before spreading. Other wise it spreads and hard to clean up
                            by
                              Showing 1-10 of 2,207 reviews