- Features + Benefits
Uses + Applications
Formulated for Demanding Window, Door & Siding Applications
Won't crack from expansion and contraction caused by sun, heat, cold, wind, and rain.
Powered by WEATHERMAX Technology for long-lasting all weather protection creating a 100% waterproof and weatherproof seal.
Strong and durable multi-surface adhesion with a lifetime mold, mildew, and algae resistance guarantee.
1 hour rain* and paint ready for increased productivity.
Dynaflex Ultra Products
DYNAFLEX ULTRA™ Advanced Exterior Sealant
Powered by innovative Weather Max Technology™ for long-lasting, All Weather Protection.VIEW PRODUCT
How to Choose the Right Caulk
Are you not sure what caulk or sealant is right for your project? With so many choices, it can be confusing.Learn More
Be aware of the weather
Apply in temperatures above 40 F. Not for continuous underwater use, high temp surfaces or surface defects.
Prime when necessary
Priming not usually necessary. Priming only required if testing indicates a need or where sealant will be constantly subjected to high levels of moisture after cure.
Use backer rod
Joint side should not exceed 1/2" wide by 1/2" deep. For joints deeper that 1/2", use backer rod.
Secret to straight lines
Prior to dealing, apply painter's masking tape above and below the joint you are sealing. Once finished, make sure to remove the tape at a 45 angle while the caulk is still wet.
Store away from extreme heat/cold
Lower Your Energy Bills by Weatherizing Your Home
Properly sealing windows and doors not only prevents unwanted drafts, but also protects against damage from the elements.Learn More
5 Steps to Winterize Your Home
Ready for that cold snap? Here’s how to make your home more comfortable and energy efficient—and maybe even save you some money.Learn More
How to Seal and Insulate a Window and Door
Prevent air leaks and help your home be more energy efficient and comfortable with this step-by-step project.Learn More
Choosing the Right Caulk or Sealant
Use this guide to help you find the right caulk or sealant for the most common home projects.Learn More
How to Fix Drafty Windows
Keep currents of cool air in check with these indoor and outdoor solutions.Learn More
How to Caulk Like the Pros
Hone your caulking skills with these 8 tips for indoor and outdoor projects.Learn More