#1 Home Improvement Retailer

Customer Reviews for OSI QUAD Max 9.5 fl. oz. Clay #329 Exterior/Interior Window Door and Siding Sealant (12-Pack)

Internet #313865626

Model #1869358

Store SKU #1005537370

  • All-weather, 3-in-1 exterior finishing, interior, bedding sealant
  • Long-term durability for window, door and siding applications
  • Low odor, paintable and bonds without primer to most materials

Customer Reviews

  • 4.6
    out of 606 reviews
  • 92% recommend this product
Filter by:
Showing 1-30 of 606 reviews
Tough Stuff
Builder used it on our house to chalk the concrete siding - I used it same way on the matching She-Shed. Really tough stuff - would have no problem using in place of construction adhesive its bond is so strong. Using it now for another shed.
by
Response from OSI - Henkel CorporationOct 13, 2021
Thank you for the nice review on the OSI QUAD Max Window Door and Siding Sealant. We are glad you are happy with it. Please let us know if we can ever be of assistance. -The Henkel/OSI Team, 1-800-624-7767 OSI
    • Recommended
    Covers and smooths out well with finger. And bonds...
    Covers and smooths out well with finger. And bonds well to multiple surfaces
    by
    • Verified Purchase
    1 found this review helpful
    The best exterior caulk on the market. Used by siding professionals exclusively. NOT water solub...
    The best exterior caulk on the market. Used by siding professionals exclusively. NOT water soluble so have a steady hand! Comes in many colors to match siding.
    by
    • Pro
    • Verified Purchase
    • Recommended
    OSI is the only product to use for exterior siding, windows and doors. Excellent grab, no sag, bo...
    OSI is the only product to use for exterior siding, windows and doors. Excellent grab, no sag, bonds to most clean surfaces and allows for up to 1/4-inch expansion and contraction. Great selection of colors on the shelf for common use and a huge selection of custom colors from OSI. Far superior to other exterior caulking sealers on the market.
    by
    • Verified Purchase
    • Recommended
    1 found this review helpful
    QuadMax is Great
    [This review was collected as part of a promotion.] I work with an Aluminum contractor doing metal roofs and additions. QuadMax is one of our preferred brands because of its durability, longevity and ease of use. The detachable snout makes it easy to store in a truck or tool box. The slice off the top opening means you don’t have to use the puncture rod on your caulk gun. I love that because it makes the job so much cleaner. QuadMax has claimed to have improved their clear to last for years. Time will tell, but either way this is a great product and worth every penny.
    by
    Response from The OSI TeamJul 10, 2023
    Your positive feedback means a lot to us. We're glad to hear that our product has performed well for you.
      • Recommended
      Great Product & Great Seal!
      [This review was collected as part of a promotion.] I recently used this product to seal several areas in my basement and around exterior windows. The product worked great and provided a smooth and seamless seal. For my application, I used the "clear" color which provided the look I was going for. The adhesive seems extremely strong and really holds everything in place while waterproofing at the same time. Odor was minimal. If using on cold days, I would suggest warming to room temperature in order to get a smooth and steady flow. Very pleased and will be getting more to finish up the never-ending to do list.
      by
      Response from The OSI TeamJul 11, 2023
      Thank you for sharing your positive experience with our product. We're glad to know that it has met your expectations and made you happy.
        • Recommended
        crystal clear with excellent grip!
        [This review was collected as part of a promotion.] Quad Max Clear is an excellent solution to address any number of areas that need a watertight seal. The number of options for a clear and durable solution are somewhat limited and Quad Max does not disappoint in any regard.
        by
        Response from The OSI TeamJul 11, 2023
        Your positive feedback means a lot to us. We're glad to hear that our product has performed well for you.
          • Recommended
          Good brand
          [This review was collected as part of a promotion.] I used this for a room addition and I’m completely happy with it’s performance. It was easy to use, inserted into the gun just fine. Dispensed great and didn’t drip like crazy. Was easy to smooth on and dried quickly. I was able to paint the same day. I will be switching to this brand for all my home improvement needs.
          by
          Response from The OSI TeamAug 9, 2023
          Your positive feedback means a lot to us. We're glad to hear that our product has performed well for you.
            • Recommended
            Excellent for Energy Efficiency Projects
            [This review was collected as part of a promotion.] This product is easy to use, strongly bonds to all types of siding and windows products! After using OSI Quad Max, I will not use any other caulking products. I used this product on a siding installation during cold, wet weather and had such great results. I was very pleased with the smooth finish.
            by
            Response from The OSI TeamSep 4, 2023
            Your positive feedback means a lot to us. We're glad to hear that our product has performed well for you.
              • Recommended
              Great wet application
              [This review was collected as part of a promotion.] I needed a product that I could apply in the rain. Quad Max worked great. We sealed a leak along a masonary wall where it met a metal window frame in a light rain. The window was leaking and it stopped. Thanks OSI
              by
              Response from The OSI TeamAug 9, 2023
              We are grateful for your feedback and are pleased to hear that you are satisfied with our product.
                • Recommended
                This product is as good as commercial grade caulk but half the price
                This product is as good as commercial grade caulk but half the price
                by
                • Verified Purchase
                • Recommended
                1 found this review helpful
                OSI is magic....I've been using it for 20 years...most guys use the cheap water based crap.....OS...
                OSI is magic....I've been using it for 20 years...most guys use the cheap water based crap.....OSI levels itself out beautifully and lasts for ever.....I love it.....send me a couple of cases...lol
                by
                • Verified Purchase
                • Recommended
                4 found this review helpful
                Very easy to use, it applied smoothly and consistent. I have a sunroom that had windows covering ...
                Very easy to use, it applied smoothly and consistent. I have a sunroom that had windows covering two sides of the room. They were old single pane, wooden and leaked. I replaced them with 1 picture window on each wall. I closed the areas on either side of the windows and covered it with siding. The White No.001 QUAD Advanced Formula Window Door and Siding Sealant VOC was used to seal the J-channel to the existing structure. It met all my expectations.
                by
                • Verified Purchase
                2 found this review helpful
                when you get it out of the tube it does what it says 3 out of 12 unusable... broke seal but would...
                when you get it out of the tube it does what it says 3 out of 12 unusable... broke seal but would not flow out except from the bottom... ruined caulk gun definitely for pro use only... unless you like working with marshmallow cream like sticky mess that can only be cleaned up with mineral spirits
                by
                • Verified Purchase
                7 found this review helpful
                We inherited a caulked deck (never wouldn't have caulked if I'd built it myself...!). Not too pr...
                We inherited a caulked deck (never wouldn't have caulked if I'd built it myself...!). Not too pretty now, but this repair will get us through the winter, and then we'll finish stripping the paint next spring and stain the deck. The space below is staying dry so far. Fingers crossed! Strongly advise using a power caulk gun to apply, as it's stiff and thick.
                by
                  • Recommended
                  2 found this review helpful
                  Fantastic product
                  Just installed a new door. Works great in cold weather. I live in Buffalo NY. I’d absolutely recommend buying the better caulking gun for this product.
                  by
                  Response from OSI - Henkel CorporationMar 28, 2024
                  We're happy our product worked well for your project. OSI
                    • Recommended
                    by
                    • Verified Purchase
                    Great product!! Applied easy and clean up was easy.
                    by
                    Response from OSI - Henkel CorporationMar 21, 2024
                    We are pleased to hear that you are satisfied with your experience using our product. OSI
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    Thicker than most caulks. Making it easy to seal smaller spaces. Works beautifully
                    by
                    Response from OSI - Henkel CorporationJan 25, 2024
                    We are glad that you are happy with the performance of our product. OSI
                    • Verified Purchase
                    It says it works in cold weather. That is 100% untrue. In 40* it just balls up. Completely useless in cold weather applications
                    by
                    Response from OSI - Henkel CorporationJan 18, 2024
                    We are sorry to hear that our product did not work as you expected. OSI QUAD MAX can be applied between 0°F (-18°C) and 140°F (60°C). For easier extrusion of the sealant at lower temperatures, store the cartridge at room temperature for at least 24 hours prior to use. If you would like to share the details of your application, feel free to reach us at 1-800-624-7767 so we can help you have a positive future experience. OSI
                    • Verified Purchase
                    by
                    • Verified Purchase
                    by
                    • Verified Purchase
                    this siding sealant works great.
                    by
                    Response from OSI - Henkel CorporationDec 14, 2023
                    We are glad that you are happy with the performance of our product. OSI
                    • Verified Purchase
                    Showing 1-30 of 606 reviews