Ecodur Roof Coating

The unbreakable bond.

Ecodur Roof Coating

Repair and restore flat roofs — even problematic tar & gravel — in less time with jaw-dropping adhesion

Hands down the best Flat Roof Product of the Century. Just see a demo of [Ecodur] and the product will sell itself.

— J.R.B. Enterprises

Why Choose Ecodur Roof Coating?

No other commercial roof coating bonds to the substrate like Ecodur. Designed for repairing and restoring even the most difficult substrates, 100% sustainable Ecodur offers the best adhesion in the industry — up to 3x the strength of most conventional roof coatings!


Ecodur helps your customers avoid costly roof replacements and saves you time and labor —with fewer callbacks.


No more time-consuming & costly tear-offs

With Ecodur Roof Coating, you can stop further damage to a flat roof without reroofing. Ecodur’s extreme adhesion and durability means it can usually be applied directly over hard-to-coat substrates such as embedded gravel, without the need for spudding or complete tear-off — saving you time and labor!

Unparalleled performance

    Ecodur is the flat roof coating of choice for longevity, waterproofing, and heat deterrence. Over the past three decades, more than 10,000 tests have been performed to prove and improve Ecodur’s performance, including:

  • Waterproof testing

  • Long-term UV tests

  • Saltwater emersion tests

  • Chemical resistance testing

  • Abrasion testing

  • Fire-resistance tests

    The results? Ecodur Roof Coating offers you:

  • Amazing waterproofing and UV resistance

  • Fast curing at any mil thickness!

  • Lifetime flexibility and repairability

  • Resistance to impact from debris and hailstorms

  • An exceptional winter temperature application range

  • Outstanding performance in even the harshest environments

  • Better bleed protection than available bleed blockers

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Easy and safe to apply!

Ecodur Roof Coating is, if we may be so bold as to say, a contractor’s dream. Applied quickly and easily by brush, roller, or squeegee — without any chemicals, odors, or off-gases — Ecodur self-levels during its remarkably fast curing time to create a smooth surface that is completely nontoxic. It’s so safe, in fact, that Ecodur even has an ANSI/NSF-61 certification (it can be used in contact with drinking water and food).

100% sustainable

While most coatings are either good performers or good for the environment, Ecodur Roof Coating was specifically developed to combine maximum performance with safety. You can even tell by its name: “Ecodur” stands for “eco-friendly” and “durability,” so you’ll always remember its promise to be high performing without harming the planet.

Made with natural ingredients — its two core ingredients being renewable castor oil and recyclable, naturally occurring gypsum — Ecodur has:


Zero VOCs


Zero BPA


Zero toxicity


Zero measurable effects of saltwater submersion


Broad spectrum resistance to pollution and chemicals

Frustrating Roof Problems — Solved!

Ecodur Roof Coating has helped thousands of contractors and building owners solve even the trickiest of roofing problems!


Ecodur Packaging

Ecodur Roof Coating is a 2-part product that requires mixing until fully combined. Please see our Application Instructions for complete details.

For tips and tricks on Ecodur mixing and application, check out our YouTube channel for the Castagra 101 Playlist — and make sure to subscribe so you won’t miss any of our new videos!

Compatible Substrates

Many problematic roofs have substrates that you can’t pressure-wash without risking further damage. Ecodur Roof Coating bonds without the need for pressure washing — even on tar and gravel roofs!

Recent Case Studies

See how Castagra's Ecodur Roof Coating excels in repairing, restoring, and helping to extend the lives of roofs by decades — on a wide range of substrates!

Central Roof NB3

Storage Unit Roof Repair

Storage is something most of us would like to have more of. Sheds and other outbuildings are fantastic if you have land to place them on. But, for the rest of us, there is the storage industry..

Ecodur roof coating


Do you have a failing roof that needs rejuvenation without disrupting the people below?

Have additional questions about Ecodur?

Visit our Product FAQ for answers to our most frequently asked questions!

NOW AVAILABLE! Patch & Repair Kits for quick repairs

Our easy-to-use, portable Patch & Repair Kit is a fantastic cost-effective way to quickly patch, repair, and waterproof almost any roof substrate. Click here for more information!

Our Quality Promise

Your roofing project is important to us. That’s why we don’t leave anything to chance when it comes to our products. We take samples from every batch of Ecodur and cure them; then, we conduct hardness tests to ensure the coating is to exact specifications. It’s all part of keeping our promise to deliver nothing but the best quality!

Our Guarantee

We’re confident that you’ll love Ecodur Roof Coating — in fact, we’re so confident that you’ll be happy with the result, we’d bet our almost three decades of experience on it. But to make certain you’ll rest assured, we offer a choice of warranties to prove just how much we stand behind our roofing products.


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