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Model # 1675293

Internet # 203164965

PL S40 10 fl. oz. White Polyurethane Window, Door and Siding Sealant (12-Pack)

This item has been discontinued.
The Home Depot no longer carries this specific product.

$68.88 /package




Model # 1675293

Internet # 203164965

Loctite PL S40 Polyurethane Window, Door and Siding Sealant is a premium quality commercial grade sealant developed especially for forming permanent, water and weather resistant seals in most exterior gaps and joints. This sealant exhibits outstanding durability, tear resistance and a movement capability of ± 25% which accommodates construction material movement to protect the original seal. Loctite PL S40 Polyurethane Window, Door and Siding Sealant is UV and ozone resistant, and does not soften in the sun. It is also CARB (California Air Resources Board) compliant.

California residents: see  Proposition 65 information

  • Polyurethane formula is durable and weatherproof to withstand harsh exterior environments
  • Paintable to blend with surrounding surfaces for a professional finish
  • Permanently flexible, excellent for use on expansion joints
  • Low VOC formula complies with Federal and State regulations Nationwide
  • Subject to or will include a recycling fee in the following states: CA, OR

Info & Guides

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Individual size (oz.) 
Caulk Form 
Standard Tube 
Caulk Type 
Coverage (linear ft.) 
Cure time (hours) 
Dry color family 
Dry to touch (min.) 
Fire and high heat resistant 
Longevity (years) 
Moisture Resistant 
Mold and mildew resistant 
Paint Product Type 
Permanently flexible 
Professional Paint Supplies & Values 
Pro Supplies 
Warranty / Certifications
Certifications and Listings 
ASTM Compliant 
Manufacturer Warranty 


Rated 4.9 out of 5 by 10 reviewers.
Rated 5.0 out of 5.0 by 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 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 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 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 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 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 Good stuff Flows good. Sticks to anything. Used it for retrofit plastic windows. March 24, 2015
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