How To Use Flex Seal Power Putty
Sealing gaps, cracks, and holes just got a lot easier with Flex Seal Power Putty. This moldable, waterproof sealant gives you all the sealing power of Flex Seal in the palm of your hand. No tools, no mixing, just results.
Ready to get started? Let's walk through exactly how to use Flex Seal Power Putty, including helpful tips, storage guidance, and what to avoid so you can get the best results every time.
How to Use Flex Seal Power Putty
1. What Is Flex Seal Power Putty?
2. Where Can You Use Flex Seal Power Putty?
3. How to Use Flex Seal Power Putty
5. How to Store Flex Seal Power Putty
1. What Is Flex Seal Power Putty?
Flex Seal Power Putty is a flexible, rubberized sealant that instantly seals gaps, cracks, and holes. Unlike products that dry hard or require mixing, this formula stays pliable and reusable while delivering a strong, waterproof seal. It adheres to virtually any surface, including metal, wood, fiberglass, glass, plastic, PVC, brick, concrete, and painted surfaces. It is also designed to perform in extreme weather and temperatures ranging from approximately -40°F to 180°F.
2. Where Can You Use Flex Seal Power Putty?
Flex Seal Power Putty is a versatile option for sealing and protecting a wide range of areas inside and outside your home. It can be used to fill cracks, gaps, and holes, seal around pipes and plumbing fittings, seal windows and doors, support RV and marine repairs, seal HVAC ducts, and even help reduce vibration and rattling. It also works on wet or damp surfaces and can even be applied underwater, giving you versatility for repairs in tough conditions.
3. How to Use Flex Seal Power Putty
Start by cleaning the surface to remove loose material, oil, dirt, or debris. A cleaner surface helps the putty grip more effectively.
Peel the putty from its release liner and tear or cut the amount you need.
Press the putty directly onto the surface, then mold and shape it by hand to completely fill the gap, crack, hole, or seam. Once pressed firmly into place, the seal forms.
For compression-style applications: Press the putty between two surfaces to create a watertight seal. After it is in place, any extra material can be trimmed off for a cleaner finish.
Flexpert Tip: Flex Seal Power Putty stays flexible, so it can conform to irregular shapes and contours without hardening or cracking.
4. Tips for Best Results
- Make sure the putty is pressed firmly onto the application area so it fully contacts the surface.
- For compression applications, it may help to press the putty onto one surface, remove its paper backing, then bring it into contact with the second surface. Once compressed, trim excess putty for a clean look.
- Because Flex Seal Power Putty remains removable and reusable, you can reshape or reposition it when needed. That makes it especially helpful for jobs where flexibility matters or where you may want to adjust the fit.
Flexpert Tip: When sealing uneven areas, mold the putty tightly into the surface so it fully fills the space to create a better barrier.
5. How to Store Flex Seal Power Putty
Store unused material back in its container for future use. Under normal storage conditions, Flex Seal Power Putty stays fresh and does not dry out, which makes it easy to keep on hand for your next project or repair.
6. What Not to Do
While Flex Seal Power Putty is strong, waterproof, and highly versatile, it is not intended for structural repairs or applications that require a rigid, permanent bond. Since it stays flexible and removable, it is best used for sealing, filling, and protecting rather than load-bearing repairs.
Do not apply Power Putty over loose debris, oils, or dirty surfaces, since buildup can interfere with adhesion. For best results, start with a properly prepped surface and press the putty firmly into place.
Flex Seal Power Putty is an easy, mess-free way to seal out water, air, and moisture without the hassle of mixing, tools, or cure time. Just mold it, shape it, and seal with confidence.
