Rated 4.4 out of 5 by 20
Rated 5.0 out of 5.0 by BvilleBound Great 'final layer' sealant for foam board insulation panels
In addition to all of the typical applications for DAP 230, it is an excellent 'final layer' sealant for XPS and polyiso foam board insulation panels. It does not dissolve the foam and remains flexible as assemblies expand and contract each day.
We recently 'wrapped' the outside of a house in Massachusetts with 2" Foamular XPS panels, for example. We sealed all of the joints and edges first with the 'Windows and Doors' version of Great Stuff, which remains flexible. Then we covered all of the joints and edges with a generous layer of DAP 230, to make sure all of the air leaks were well sealed. A couple of photos are attached.
I hope this is helpful.
September 26, 2015
Rated 5.0 out of 5.0 by Mike Best caulk I have ever used
Dynaflex 230 adheres very well to a variety of surfaces including vinyl, aluminum siding and masonry. It is easy to work and takes paint well. I used it on several exterior windows and doors I installed last year and the caulk today looks like the day i applied it - very flexible with very good bonding characteristics. I highly recomend the product.
June 12, 2015
Rated 5.0 out of 5.0 by Doresoom Good Stuff
Works great, easy to apply, economical... what's not to like?
I use this for all the trim in my house. Recently I installed a laminate floor in my guest bedroom, and this caulked worked great to seal the prefinished quarter round and the existing baseboards. It matches the trim perfectly and makes it look like one piece! I also used it for filling in the nail holes as well.
Clean up is easy, since it's water based. Just keep a damp paper towel with you as you work. You don't need any special tools for smoothing it out either. Just a wet fingertip!
January 8, 2015
Rated 1.0 out of 5.0 by disappointed Does NOT hold up!
This was used on both the inside and outside of our windows by a contractor. We ended up with leaking windows and 1k+ in damages due to dry rot in under 2 years. When we removed it it was still tacky and was originally applied in the summer. I don't recommend using this, period.
August 21, 2015
Rated 5.0 out of 5.0 by PatsPOV best caulk
I've used other cheaper caulk, big mistake. Get this stuff works great, sticks well, doesn't crack or dry out. Even better if you paint over it.
It doesn't like constant exposure to water so I don't use it where it could be wet for a long time. In places like that I use 100% silicon but then you can't paint over it and it's even messier to clean up.
In any case, don't get the cheap caulk, and if you have someone working for you, don't let them use it either.
September 27, 2012
Rated 5.0 out of 5.0 by AIRbyDzn DAP dynaflex 230
This is not just a caulk - this is a sealant. When cured you would think it had silicone in it, but it doesn't, so it doesn't smell bad. Easy cleanup. 50 yr warranty. Great product!
July 1, 2010
Rated 4.0 out of 5.0 by 19mp11 works well holding up
works well holding up can"t say for long term only up for 90 days. It works well so far
November 16, 2013
Rated 3.0 out of 5.0 by nrpardee Looking for Better
I've used more than 10 tubes over a period of several years. It's relatively easy to work with. The main reason I'm looking for something else is that unpainted on the exterior it becomes very dirty looking. I've also had more cracking than I wish- perhaps other caulk would work no better, but I'm looking.
July 14, 2014