The Ultimate Waterproof Membrane

Advanced Coating Technology

Our Story

ExpandoThane™ was created in 2004 and is used for a Protective Roof Coating, Specialty WaterProof Coating and any areas needing a high build Waterproof Coating. It is a VOC free Plural component hybrid with micro blowing agents to create a hard skin that expands five to seven times its volume to span gaps and fill bug holes. It may be applied directly over existing roof substrates such as metal, modified bitumen, BUR, CONCRETE, EPDM, TPO, and spray urethane foam. It also makes a great waterproof membrane for foundation walls.

Our Product

Our ExpandoThane™ product is an expanding waterproofing compound. It contains micro blowing agents that create a tough and flexible waterproofing membrane capable of sealing the gaps and crevices. This amazing formula allows for a barrier between the outside and the interior of a foundation wall or applied as a secondary roof covering that completely eliminates the water from finding a way in. Standard polyurea will not fill the gaps in between crevices, or bug holes, because it was designed to mimic the contours of the object being sprayed. However the ExpandoThane material will expand in those holes and crevices 5-7 times the volume sprayed.

Ultimate Waterproof Membrane

See an ExpandoThane Roof Job

When applying ExpandoThaneTM as a flat seamless roof system you can save cost by leaving it this color and applying pea gravel over it or should you elect to we have a single component Aliphatic Polyurea in White and other colors, as well as our own SiliconeSeal 3000 especially designed for use with the ExpandoThaneTM System.

What our Clients say?

""I have been doing business with SprayEZ for a couple months now. I have been making upgrades to my home and their products, service, and staff have always gotten me what I need and shipping was always on time. Thank you for the help guys.""

Reference Sheets

Safety First

ExpandoThane Tech Data Sheets

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ExpandoThane Brochure

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Our Friends

Our parent company, where we specialize in spray insulation and waterproofing materials, the manufacture of custom trailers, and machines for the rigs and the packaging and distribution of our materials and products.

Specialty built spray rigs. Here you can see what our rigs come equipped with and you can choose between different models. We offer amazing financing options, and most rigs are ready within 1-4 business days.

DIY Foam supply is our cartridge material spray foam Do It Yourself site that specializes in the foam products for smaller projects.

RockHard bed liner material is the innovation of the benefits of the spray on bed liner without the major issues seen in the other brands like peeling, cracking and fading from black to white.

Before & After

Contact Us

Nationwide installation available. Fill out form for a quote
from one of our local applicators.





Please feel free to call us at 904.225.1047 or 877.772.9629 if you have any question. We also have the contact form you can fill out and someone will get back to you within 24 hours. Thank you so much for visiting expandothane.com