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All homes move -
Big Stretch moves with them.

Big Stretch is a high-performance water-based elastomeric window, door & siding caulk that won't just stretches.

Find Big Stretch Near You
What is Big Stretch? Video 0:48
MSRP $7.69

Caulk needs
to stretch.

That's why you need Big Stretch. It has powerful adhesion to many surfaces and great flexibility. It will twist, bend, compress, and stretch to handle all of the movement homes can dish out.

Superior adhesion & elasticity

Allows the caulking to stretch as your home moves instead of tearing or cracking, even handling wide joints with no slump. 

Unparalleled UV & weather resistance

Prevents the caulk from cracking and discoloring, even in the most intense UV exposure, making it perfect for interior and exterior projects.

Easy to use & easy water clean up

Unique commercial-grade performance in a water-based formula that goes on smoothly, tools easily, and is easy to clean up with just water.

Paintable without the paint gloss

Compatible with latex paint and most oil-based paints, sealers, and stains and won’t cause paint gloss, making it easy to use on any color.

Easily applies and blends in

You’ll love Big Stretch. You can smooth it on as easy as mayo on a BLT. It’s low odor, it meets the strictest VOC requirements, and it’s environmentally friendly. Performs well in any type of climate and is freeze-thaw stable. Simply thaw and apply. No wasted product, no special storage requirements. 

No more ugly cracked caulk

Big Stretch keeps the weather out with its permanently waterproof seal. It spans gaps up to 2 inches wide and stretches up to 500% of original joint size without cracking, eliminating costly call-backs, and rework.

Big Stretch colors: white, clear, black, tan, gray, redwood, ironstone, slate gray, woodtone, pine green, dark brown, limestone, almond

Great for interior and exterior use

Big Stretch comes in a variety of colors*: White, Black, Gray, Slate Gray, Ironstone, Limestone, Almond, Tan, Dark Brown, Woodtone, Redwood, Pine Green, and Clear, and is available in 10.5oz plastic cartridges. White is also available in 29oz fiber cartridges. A 10.5oz cartridge will yield approximately 26 lineal feet with a 1/4 inch (6mm) bead.

*Colors available in the USA, not all colors listed are available in Canada.


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#1 In Best Selling Window & Door Sealant

Find Out What Big Stretch
Can Do

Big Stretch will handle most any movement your substrate can experience all without cracking. It’s perfect for many interior and exterior applications, including:

  • Windows and doors
  • Siding and trim
  • Vents
  • Soffits
  • Baseboards and crown molding
  • Sound-proofing interior walls
Adheres to a variety of building materials and other surfaces, including:
icon metals

Aluminum, Anodized Windows, Brass, Steel

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Acrylic Sheet, ABS, Fiberglass, Nylon, Plexiglass, PVC, Urethane, Vinyl

icon others surfaces
Other Surfaces:

Asphalt, Brick, Cinder Block, Concrete, Drywall, EIFS, Fiber Cement, Glass, Mortar, Stone, Stucco, Tile, Wood

Where not to use

You shouldn’t use Big Stretch:

In areas of constant water submersion or frequent, prolonged puddling. 

In areas with high foot or vehicle traffic such as driveways, sidewalks, or decks.

On roofs exposed to prolonged dampness, because that’s what Through the ROOF!® is for.

On copper flashing, you’ll want to use colored Big Stretch, Lexel, or Through the ROOF!

We’re here to help see your project through to the end

Not sure which sealant, caulk, or other product is right for your job? Looking for the nearest location to buy products for your next home project? Don’t know exactly how to tackle your repair? We’re here to help.

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