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Model #18436

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Alex Fast Dry 5.5 oz. White Acrylic Latex Plus Silicone Caulk

$3.98
  • Latex caulk seals cracks and gaps around windows, doors and more
  • Strong, durable adhesion to multiple surfaces and 100% waterproof
  • Crack resistant and paint ready after 20 minutes of application
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Product Details

DAP ALEX fast dry acrylic latex caulk plus silicone is specifically formulated to meet the demanding needs of professional painters and deliver outstanding paint finish results. It can be brush painted in 20 minutes after application or painted with a sprayer immediately, so the job gets done faster. This durable, flexible caulk won't crack or discolor paint and doesn't pick up dirt. It applies smoothly and easily, has outstanding adhesion to a wide variety of surfaces and provides a 100% waterproof seal. Ideal for sealing cracks and gaps around windows, doors, baseboards, molding and trim.

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From the Manufacturer

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Specifications

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Questions & Answers

44Questions
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Q:Can i add more caulk on top of the cracked caulk around my wood windows and my aluminum siding? It is all the same stuff and only 1 month old?
by|Oct 3, 2022
0 Answer
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Q:Is this product good for sheet-metal
by|Aug 18, 2022
1 Answer
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A:  Thank you for posting your inquiry. The DAP Alex Fast Dry Acrylic Latex Caulk Plus Silicone will adhere to many surfaces including sheet metal. Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

by|Nov 20, 2022
    36 found this answer helpful
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    Q:Is this product good for sheet-metal
    by|Aug 18, 2022
    1 Answer
    Answer This Question

    A:  Thank you for posting your inquiry. The DAP Alex Fast Dry Acrylic Latex Caulk Plus Silicone will adhere to many surfaces including sheet metal. Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

    by|Nov 20, 2022
      29 found this answer helpful
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      Q:Can this be used as a kind of adhesive to bond quartz countertops to cabinets or drywall, or to bond a piece of polywood board to another poly wood board?
      by|Aug 5, 2022
      2 Answers
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      A:  No, it’s just caulk, painters caulk

      by|Nov 20, 2022
        22 found this answer helpful

        A:  Thank you for posting your inquiry. DAP ALEX FAST DRY is designed, marketed, labeled, and recommended for use as a general-purpose trim sealant. It is not designed, tested, marketed, labeled, or recommended for use as a primary construction adhesive. For this type of application, we would recommend the use of DAP DYNAGRIP Heavy Duty Max Construction Adhesive. Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

        by|Nov 16, 2022
          25 found this answer helpful
          Showing 1-4 of 44
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          Customer Reviews

          4.4 out of 5
          (596)
          • 4.4
            out of 596 reviews
          • 80%recommend this product
          Filter by:
          Showing 1-10 of 596 reviews
          Cracks overnight
          Every window used on, product has cracked overnight.
          by
          Response from DAPProductExpertNov 20, 2022
          Thank you for posting your feedback. We're sorry to see your low star review on DAP ALEX FAST DRY. Based on your commentary indicating: "product has cracked overnight", it would likely indicate that application site was subject to movement/instability prior to the product reaching full performance and/or that insufficient amount product was applied to the joint. Joints that are prone to experience significant expansion/contraction forces may require higher performance products, such as DAP DYNAFLEX 230 or DAP EXTREME STRETCH, these types of more specialized elastomeric joint sealants offer several times the amount of flexibility offered by DAP ALEX FAST DRY. Because you did not provide any project details, it is difficult to provide a more detailed response in this format. At your convenience, please contact DAP’s Technical Customer Service Department at 888-327-8477 so that we can obtain some additional information from you about your experience and to discuss alternate product options. DAP
            • Recommended
            WARNING: DRASTIC PRODUCT FAIL OF DAP CAULK
            It degraded after the first heavy October rainfall! Purchased in 2021 and opened in August of 2022 for use on an exterior project, a 1/8” to 1/4" depth was placed over foam backer material in 7/8” diameter counter bored holes to protect lag bolt heads. The caulk was installed in sections over a period of 2 months, providing up to 7 weeks curing time. After removal, the bits of degraded DAP caulk had the consistency of crumbling Play-Doh. I’m not sure if it was a bad lot (number 121132A).
            by
            Response from DAPProductExpertOct 20, 2022
            Thank you for posting your feedback on DAP ALEX FAST DRY Acrylic Latex Caulk Plus Silicone. Based on your commentary, the product was not used in a manner that was consistent with its usage guidance. ALEX FAST DRY is designed to be applied in "bead" form, not into "holes" as a repair filler. As indicated on the product package label and supporting product literature: "Not for continuous underwater use, filling butt joints, surface defects, tuck-pointing or expansion joints." and "Joint size should not exceed 3/8" wide x 3/8" deep. If joint depth exceeds 3/8", use backer rod material." The use of this product, in the manner as you described, would not be recommended. Of additional note, based on the "lot (number 121132A)" that you provided, this product would have been several months beyond its shelf life at the time of application. Should you have any additional questions or wish to discuss this, please contact DAP’s Technical Customer Service Department at 888-327-8477. DAP
              Messy and still cracks
              My biggest complaint is that it shrinks too much and the cracks come thru again, even after caulking 3x on 3 seperate days. Also continues to squirt out of the tube when you stop squeezing the handle. Messy and not effective.
              by
              Response from DAPProductExpertOct 14, 2022
              Thank you for posting your feedback. We're sorry to hear about your experience with DAP ALEX Fast Dry Acrylic Latex Caulk Plus Silicone. This product is considered fully dried within a few days of application (depending on the joint size, temperature and humidity). After the product has gone through this drying phase, additional shrinkage/volume loss does not continue. The "shrinkage" that you are referring to is not likely an artifact of the sealant's internal performance, rather, it is the result of the movement of the surrounding substrate materials. For applications where significant joint movement is expected, we would recommend the use of DAP DYNAFLEX ULTRA or DAP EXTREME STRETCH. Should you have any additional questions or wish to discuss this matter further, please free to contact DAP’s Technical Customer Service Department at 888-327-8477. DAP
              • Verified Purchase
              1 found this review helpful
              Cracks once dry
              I used this caulk thinking the fast dry time would allow me to complete my work faster. Guess again. A month later, the caulk has cracked in every place ive used it. Now i have to repaint everything. Worst finishing product ive ever used.
              by
              Response from dappwrApr 21, 2022
              Thank you for posting your feedback. DAP ALEX FAST DRY is designed for use as a fast-drying general-purpose caulk, where low to moderate joint movement is expected. Based on the photograph that you provided, it would appear the there is an insufficient amount of sealant in the joint. As a general rule, application of sealants at less than 1/8" (bead) is not recommended, as the product's ability to properly flex will be limited. For application where higher joint movement is expected, we would recommend the use of softer/more flexible sealants such as DAP DYNAFLEX 230 or DAP EXTREME STRETCH. Because you did not provide any background regarding your project (such as: application conditions, surface preparation, application technique), it is difficult to provide a more detailed response in this format. At your convenience, please contact DAP's Technical Customer Service Department at 888-327-8477 so that we can obtain some additional information regarding your experience and to discuss the above-referenced alternate product options.
                Works great
                We love using this silicone to finish off our trim and get it ready for painting. It cleans up real nice and paints easy.
                by
                20 found this review helpful
                It comes off
                I am disappointed in this caulk. I cleaned the surface hours before, put it on, let it dry up for several days, and when I’m ripping the tape off it comes off on the edges. This means the ceiling paint will rip off too when I’m taping it. I’ve never experienced this before.
                by
                Response from DAPProductExpertAug 19, 2021
                Thank you for posting your feedback. The issue that you describe, regarding your use of masking tape, is not related to a product performance issue, rather it is as a result of the application technique employed. When using masking tape, the tape should be removed immediately after tooling and prior to the applied sealant skinning over (surface drying or drying through). If you wait until after the sealant has skinned over or dried through to remove the tape, you may pull up the sealant with it (as the tape typically becomes embedded under the applied sealant). At your convenience, please contact DAP’s Technical Customer Service Department at 888-327-8477 so that we can obtain some additional information regarding your project and to offer some additional application guidance. DAP
                  9 found this review helpful
                  My go to caulking to close up gaps!
                  Very easy to apply and I generally use this caulking to close up gaps no more then 1/8 wide. I recently learned the secret to having clean caulking lines and it’s to go over the initial caulking bead with a wet finger and then using a wet sponge to clean up the line. This caulking is paintable after it dries.
                  by
                    • Recommended
                    19 found this review helpful
                    We install windows for a living and all we use is DAP clear and white silicone. It has great perf...
                    We install windows for a living and all we use is DAP clear and white silicone. It has great performance for a great price!
                    by
                    • Verified Purchase
                    • Recommended
                    35 found this review helpful
                    Poor choice
                    I sealed the relief joints of a pool deck with foam backer rods and this caulk. A day later I painted the sealant with paint to match the deck. After a week the sealant shrank and rain has eroded the sealant staining adjacent areas with white residue. It is a mess.
                    by
                    Response from DAPProductExpertOct 22, 2020
                    Thank you for posting your feedback. We're sorry to see your low star review on DAP ALEX FAST DRY. DAP ALEX FAST DRY is a general-purpose trim sealant, is not designed, tested, labeled or recommended for use on "traffic surfaces" (general flooring, sidewalks, driveways, patios or pool decks). Traffic surface applications require the use of more specialized products, such as DAP Premium Polyurethane Adhesive Sealant or DAP 3.0 High Performance Self-Leveling Concrete Sealant. For a recommendation on the proper products and methods for this type of work, please feel free to contact DAP’s Technical Customer Service Department at 888-327-8477. DAP
                      11 found this review helpful
                      Product turned liquid
                      Caulked around shelves on wall. Product is very thin and shrunk down after drying requiring second caulking. Used about 1/10 of tube. A few months later when I went to use tube it had liquified and came out like white water.
                      by
                      Response from DAPProductExpertJan 28, 2020
                      Thank you for posting your feedback. We're sorry to see your low star review on DAP ALEX FAST DRY. Based on your commentary regarding the product's texture/consistency, it would appear that you have product that is well beyond its shelf life. At your convenience, please contact DAP's Technical Customer Service Department at 888-327-8477 so that we can obtain some additional information from you. When calling, please be sure to have the package (cartridge) available, as we will need to verify the production code in order to determine the date of manufacture. DAP
                        8 found this review helpful
                        Showing 1-10 of 596 reviews

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