Rated 4.9 out of 5 by 10
Rated 5.0 out of 5.0 by naplescontr Really Good Stuff
My favorite polyurethane caulk is the Chem Caulk 915 but my limited experience with the PL S40 has been very positive. They're very similar to use. I haven't compared their adhesion yet. The Chem caulk has an adhesion like no other. The white PL S40 is a brighter white than the white Chem Caulk and that's an advantage at times.
October 20, 2015
Rated 5.0 out of 5.0 Easier to work with then silicone sealant and adheres to just about anything
For exterior use where you would like to paint over it polyurethane sealant is usually the way you need to go. It a closer to the silicone then latex sealants is how easy it is to work and how stringy it can be. But I think polyurethane works better at bonding to porous surfaces then silicone. I just use disposable latex to nitrile gloves to work it in and smooth it out. It does take longer to cure than silicone but it should hold up better. Plus this is paintable too. Paint does not adhere well to good quality silicone.
September 8, 2015
Rated 5.0 out of 5.0 by Legosdad Great Product
Easy to use, easy to apply and easy to clean up, plus great coverage.
July 4, 2014
Rated 5.0 out of 5.0 by Sonny Excellent product
Absolutely, it works as advertised and is relatively easy to apply and is the best in its class.
Expands and contracts well, does not crack, and resists water. It's paintable.
August 18, 2015
Rated 5.0 out of 5.0 by Chuck One of the Best polyurethane caulks I have ever used
This caulk should be used for virtually all exterior caulking applications. Although far more difficult to use than latex caulks, there is no comparison with the quality and durability of the end result. There is virtually no shrinkage like there seems to be with the Quad brand of polyurethane caulk. It is applied best with latex gloves and old pairs of socks to get the best results.
The only reservation I have is that the shelf life of the product is limited. If you keep an unused tube of it around for a year or more, it can be difficult to squeeze out of the tube to the point that the tubes will sometimes burst. Therefore, I recommend buying only what you need. If you need more, then buy fresh tubes when you need them.
February 3, 2015
Rated 5.0 out of 5.0 by Steve Very versatile
I have been using PL brand for approx over 11 year before Locktite bought out PL. Still an excellent product that stands up to anything that is thrown at it.
April 22, 2015
Rated 4.0 out of 5.0 by ss Good Sticky stuff
Seems to be stickier than silicone, and works better and lasts longer on roof and gutters (at least for me) seems to take a little longer to dry than silicone.
April 7, 2015
Rated 5.0 out of 5.0 by Pete Good stuff
Flows good. Sticks to anything. Used it for retrofit plastic windows.
March 24, 2015