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ExpandoThane™ Waterproofing System

ExpandoThane™ is an expanding polyurea-based waterproofing system for eligible roof and foundation applications. Its expanding characteristics are designed to help the material reach irregularities and small voids that can be difficult to address with a conventional coating alone.

Because every coating application is different, coverage rates, thickness, cure times, and finish options must be confirmed for the specific system and project. We work from the applicable manufacturer guidance rather than applying one generic specification to every roof or foundation.

System selection, surface preparation, and application details vary by substrate, drainage, exposure, and manufacturer requirements. Spray Foam San Antonio evaluates conditions and helps determine whether an ExpandoThane™ system is appropriate for the project.

Contact Spray Foam San Antonio to discuss your roof, foundation, waterproofing, or protective-coating project. Call 210.445.2461 or request a quote to start the conversation.


ExpandoThane FAQs

What types of projects may be suitable for ExpandoThane?

ExpandoThane may be considered for eligible roof, foundation, waterproofing, and protective-coating applications. Suitability depends on the substrate, existing system, moisture conditions, drainage, and project requirements.

Can ExpandoThane restore every existing roof?

No. Some roofs may be candidates for restoration, while others may require repairs or replacement. The existing assembly must be evaluated before a recommendation is made.

Why is surface preparation important?

Cleaning, repairs, moisture evaluation, adhesion testing, and other preparation steps can affect system performance. Requirements must follow the selected manufacturer system and site conditions.

How are thickness and cure time determined?

Coverage, thickness, cure time, and finish depend on the selected system, environmental conditions, and manufacturer guidance. Those details are confirmed for each project rather than assumed.