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Box Gutter Expansion Joint

Box Gutter Expansion Joint

Our “stretch and seal” roof flashing system is ideal for square ducts, chimneys, skylights, and more. It joint flashes hi-rib and standing-seam profiles and easily flashes between dissimilar materials with a superior fit and seal. Made with recycled material in the USA, it’s backed with a 20-year manufacturer’s warranty.

Benefits

If you need expandable edge strip flashing, go with quality you can trust: Box Gutter Expansion Joint from Marco. It stretches and forms easily to fit and seal, even between dissimilar materials, including brick, fiber cement, galvanized steel, aluminum, stainless steel, and concrete. And with our Box Gutter Expansion Joint, vibration and expansion are not a problem. Available in 9” width by 12’, 33’, and 50’ lengths, Box Gutter Expansion Joint comes with a 20-year warranty and the peace of mind you get with all Marco-quality products.

Related Products

Related Products

Universal RoofBoot™ Round Flexible Sleeve

Our Universal RoofBoots’ flexible round base is designed to form a seal on all types of roofing surfaces (including metal, plastic, tile and more), and on almost any panel configuration and roof pitch, regardless of the pipe location.

Specialty Boots

Extreme angles, retrofits, multi-flash, solar, multi-port and more, we have the specialty boots to provide the perfect fit and seal your unique roofing designs. All with great warranties and proven performance.

Standard RoofBoot™ Square Flexible Sleeve

Our Standard RoofBoots feature a flexible square base designed to form a seal on almost any panel configuration and roof pitch, regardless of the pipe location or type of roofing surfaces (including metal, plastic, tile and more).
Additional Resources

ADDITIONAL RESOURCES​​

VENTILATION CALCULATOR​​

Calculate the exact amount of ventilation needed for a well-balanced system.

TECHNICAL TOOLS​​

Dive deep into product sheets, diagrams, and full spec breakdowns. 

Roofing FAQ

Learn everything you need to know about ventilation.

Marco Industries