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Dynaflex 230 10.1 oz. White Premium Exterior/Interior Window, Door and Trim Sealant

  • Long lasting, all purpose acrylic latex caulk plus silicone
  • Seals joints up to 1 in. wide in windows, doors and siding
  • 100% paintable and crack resistant
  • See More Details

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Product Overview

DAP DYNAFLEX 230 100% waterproof window, door, siding and trim sealant is a premium elastomeric sealant with silicone like toughness to withstand the elements. Combines outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor and water clean-up. Highly flexible to handle joint movement without cracking, crumbling or losing adhesionIdeal for sealing around window and door frames, siding and trim both inside and out.

Info & Guides

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Specifications

Dimensions

Individual size (oz.)
10.1

Details

Color/Finish
White
Coverage (linear ft.)
55
Cure Time (hours)
24
Dry Color Family
White
Dry to touch (min.)
30
Features
Moisture Resistant,Mold and Mildew Resistant,Permanently Flexible
Indoor/Outdoor
Indoor/Outdoor
Interior/Exterior
Exterior,Interior
Kit
No
Longevity
50 years
Longevity (years)
50
Number of Tubes Included
1
Professional Paint Supplies & Values
Pro Supplies
Sealant Form
Standard Tube
Sealant Type
Latex
Transparency
Solid

Warranty / Certifications

Certifications and Listings
ASTM Compliant
Manufacturer Warranty
See Use and Care Manual

Questions & Answers

157Questions24Answers

Can this be used for wood stained with an oil base stain? I'd like to seal any possible gap where...

Asked by Annoyed May 9, 2021
2
Answers

Thank you for posting your inquiry. DAP DYNAFLEX 230 can be applied to primed, painted, and stained surfaces (in a fully dried state). Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

What are the differences between Dynaflex 230 and Alex Flex? What is most suitable to use when p...

Asked by James March 25, 2021
3
Answers

The dynaflex 230 is a much better product more elastic easier clean up longer lasting

Can this be used to seal Polycarbonate roof panels where two panels overlap. To stop rain water f...

Asked by Mick March 18, 2021
1
Answer

Thank you for posting your inquiry. When sealing between/at the edges of two nonporous materials, the use of a more specialized (non-water-based formula) such as: DAP DAP 3.0 Window, Door, Siding & Trim would be required. Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

How long does this product take to achieve a full cure?

Asked by Eka March 8, 2021
1
Answer

Thank you for posting your inquiry. As indicated on the product package label and supporting product literature: As indicated on the product package label and supporting product literature: "Apply in temperatures above 40ºF. Do not apply when rain or freezing temperatures are forecasted within 24 hours. Cooler temperatures and higher humidity will slow down dry time. Return to Service Time: 24 hours, Full Dry Through: 7-14 days". Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477.

What product do I use for a window seal

Asked by Boy March 2, 2021
4
Answers

Hi Boy, This Dynaflex 230 is a great choice for sealing around windows, but you also might want to consider the Dynaflex Ultra product - which is slightly better for just a few dollars more. Both hold paint well, should not crack, and if applied around a white window trim - don't even need to be painted afterwards. Both are sold by Home Depot and come in multiple colors if needed.

Can this be used on drywall corners in a high humidity area such as a bathroom ? Not using it f...

Asked by Dwight February 18, 2021
2
Answers

Dear Dwight: New drywall corners (inner) are connected with paper tape and fastened / covered with plaster, and outer corners are protected with a poly or metal corner that is also fastened and covered with plaster compound. If there are cracks in the corners of existing, painted drywall, DAP 230 is a good solution. Apply it with a damp finger, moving quickly. Keep a damp sponge handy. You can paint over it as soon as it cures. I hope this is helpful, Mark

Wha’s the lowest temperature I can apply

Asked by Ed February 12, 2021
4
Answers

Thank you for posting your inquiry. As indicated on the product package label as well as supporting product literature, DAP DYNAFLEX 230 has an Application Temperature Range of: 40ºF to 100ºF. Should you have any additional questions or require further assistance, please feel free to contact DAP’s Technical Customer Service Department at 888-327-8477.

Is this the correct product to apply indoors for sealing around a leaking window?

Asked by Sticky January 29, 2021
1
Answer

Thank you for your inquiry and for your interest in the DAP products. The inquiry that you have posted does not contain enough detail or background to allow us to provide a definitive response in this format. As a general rule, sealing (to prevent water infiltration) should be done on the exterior surface, to prevent water entrapment. At your convenience, please contact DAP’s Technical Customer Service Department at 888-327-8477 so that we can obtain this additional information from you and provide you with the guidance you need to move forward with your project.

Can i use this to fill nail holes in pvc trim without it discoloring/collecting dirt? What should i use

Asked by Ricky January 4, 2021
2
Answers

I haven't had any issues with mine discoloring in the sun after being outside for about a year now. If you're worried about it though you could touch it up with some paint to give it that extra protection you want.

Can it be used as a fire block?

Asked by CU January 3, 2021
4
Answers

Thank you for posting your inquiry. DAP DYNAFLEX 230 is not designed, tested, marketed or labeled for use as a "fire block". Should you have additional questions or require further assistance, please feel free to contact DAP Technical Customer Service at 888-327-8477.

Dynaflex 230 10.1 oz. White Premium Exterior/Interior Window, Door and Trim Sealant - page 2

Customer Reviews

  • 4.3
    out of 703 reviews
  • 81% recommend this product
Filter by:
Showing 1-10 of 703 reviews
Typo on label it seems, 2-4 hours to paint...not 7-14 days. See picture.
I bought this in clear mistakenly. I've gone through probably 20 tubes of white. When I looked on the label to see the time until you can paint over it, it says 7-14 days! I checked the white tube and it says 2-4 hours, 7-14 days to full cure. I'm assuming this is a typo based on a previous customer review that I searched out that said 7-14 days until paint is nuts and gave it a low rating. The response from a rep was that 2-4 hours AS THE LABEL STATES is the time until it will accept paint. Most likely the rep doesn't have a misprinted label like I got, and most likely the reviewer had. Good stuff, doesn't go on as easily and isn't as easy to work with as the white stuff, but still way better than acrylic latex painters caulk (cheap stuff). Hopefully this review helps someone.
by Beefjrkytime
Response from DAPProductExpertMar 29, 2021
Thank you for posting your feedback. DYNAFLEX 230 (Clear) and DYNAFLEX 230 (White) have significantly different paint application times. The label data that you reference in your commentary is not a typographical error. The labels for “Clear” and “White/Colors” communicate different data, as they reflect the inherent performance differences between the “Clear” and “White/Color” versions of the product, more specifically, “Clear” acrylic-latex (water-based) sealants dry slower than White/Color versions. As indicated on both the product package label and supporting product literature (Technical Data Sheet) - DYNAFLEX 230 (Clear): "Allow sealant to dry clear (approximately 7-14 days) before painting with latex or oil-based paints." As indicated on both the product package label and supporting product literature (Technical Data Sheet) - DYNAFLEX 230 (White): "Allow sealant to dry 2-4 hours (longer in cool or humid conditions) before painting with latex or oil-based paints.” Should you have additional questions or wish to discuss this in more detail, please feel free to contact DAP Technical Customer Service at 888-327-8477. DAP
This is my go-to for filling in trim molding gaps
After installing white crown, chair rail, and baseboard molding in our old house, the unevenness of the walls became very obvious. Dynaflex 230 to the rescue! With a little practice and the tip cut at an angle, you can put in a bead of caulk into the gap without too much cleanup required. For the photo, I stopped a couple feet short of the wall. The top edges were already done. It makes for a MUCH cleaner appearance. Three weeks and multiple daily showers later - no cracking or shrinking or anything. I have done the same with trim installed in other rooms with similar high quality results. This approach also makes it a lot easier to paint adjacent to the trim by cutting in with a brush.
by Eric
1 person found this helpful
I had an old stock tank I wanted to turn into a water container garden, but it had some small lea...
I had an old stock tank I wanted to turn into a water container garden, but it had some small leaks around the base. I used this sealant on the inside of the tank and the outside around the seams, and let it dry for about a week. Then I got impatient and filled it with water anyway (it said it could take a couple of weeks to dry completely). When I filled it up the leaks were much better, and it could hold water almost completely, but still leaked a little bit. I figured it wasn't that big of a deal and I would need to do periodic water changes anyway, so I left it at that. The biggest surprise came like a week later when this stuff finished drying (while holding water) and now it doesn't leak at all! THIS STUFF IS MAGIC!
by Nicole
Response from DAPProductExpertSep 9, 2020
Thank you for posting your feedback. While we are happy to see your positive comments, we must note that DAP DYNAFLEX 230 is not designed, tested, labeled or recommended for use in submerged (below waterline) applications. As indicated on the product package label and supporting product literature: "Not for continuous underwater use...". Should you have any additional questions or require further assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477. DAP
1 person found this helpful
Clear version - Perfect for brick to wood trim!
I recently stripped and scraped 50 years worth of old white caulk from the wood trim around my front door where the trim abuts to brick. After removing the old caulk, the contrast between the brick and dark newly-painted trim looked really good - but there was an air gap. Filling with white caulk would not have looked good, so I tried the clear variety of this product. The result was very satisfying. The photos show the result and what the trim to brick transition looked like "before". Note that the clear caulk goes on white, but after several days it turns clear as it cures. Don't forget to fill wider gaps with foam backer as the instructions suggest.
by Louie
4 people found this helpful
I have used this on a number of different projects. I just got more of this today, I used it this...
I have used this on a number of different projects. I just got more of this today, I used it this time to glue camouflage on a toy tank.
by JurassicParkStaff
1 person found this helpful
I have used this product before. It works well and seals perfectly. Whenever, I install windows, ...
I have used this product before. It works well and seals perfectly. Whenever, I install windows, Dynaflex 230 is my first purchase.
by GmacF150
2 people found this helpful
100% Water proof unless you get it wet. DAP = "Don't Apply Period" It NEVER cured and now it's a...
100% Water proof unless you get it wet. DAP = "Don't Apply Period" It NEVER cured and now it's all over a brand new $25,000 deck. Calling them was no help. All I can do now is scrape and scrub and hope I don't destroy the deck or the house. This stuff is JUNK!
by mess
Response from DAPProductExpertNov 9, 2018
Thank you for posting your feedback. We're sorry to hear about your experience with DAP DYNAFLEX 230. Because you did not indicate the size of the joint, application surfaces, surface preparation, application technique or application conditions, it is difficult to provide a proper response. DYNAFLEX 230 is a water-based formula, as such, the sole drying mechanism is the evaporation of water. Dry time can be significantly impacted by cool or humid application conditions, moisture in the application surfaces or by thick (deep) applications of the sealant. When more challenging applications are present, DAP would recommend that you consider our line of fast cure sealants, such as DAP 3.0 Window, Door, Trim & Siding High Performance Sealant. The fast cure sealants will be surface dry and ready for paint in approximately 30 minutes, even in cooler and/or more humid application conditions. Should you require additional assistance, please contact DAP’s Technical Customer Service Department at 888-327-8477. DAP
11 people found this helpful
Works great!!
[This review was collected as part of a promotion.] It was so easy to use. After cutting the tip at an angle it goes on so easy. I had never cut at an angle before. Make sure you do this. It makes it so much better to apply. The color is super white and very pretty. It seals great. Easy to clean. No smell. Makes everything look clean and neat.
by Mkb74
Easy application
[This review was collected as part of a promotion.] We used this to redo the seals around our bathtub. It was easy to apply and the extra cleaned right up. Also was dry in less time than expected so it heats always a plus.
by Eklypze79
I Would Definitely Buy Again
[This review was collected as part of a promotion.] DAP Dynaflex 230 100% Waterproof Window, Door and Trim Sealant is good for windows, gutters, siding, doors, trim, flashing, composite wood and pvc trim board. It claims to be 100% water and weatherproof. It's also for interior and exterior and seals up joints up to two inches wide. I have heard, tried and bought DAP products before. It's a good quality brand. My experience with DAP Dynaflex 230 sealant was very positive. I sealed my windows on the porch and has kept the water from coming. Especially with all the rain I have gotten. I like there is low odor, it goes on smooth, it fills in the cracks and crevices and dries very quickly. I love how it deals out the water and the weather. It's easy to use, apply and spread nicely. However, I do recommend using a small scraper to help smooth it out. To me this DAP Dynaflex 230 100% Waterproof Window, Door and Trim Sealant feels like paint and clay texture. I would recommend DAP Dynaflex 230 100% Waterproof Window, Door and Trim Sealant and buy too.
by Dmlcll
Showing 1-10 of 703 reviews