Rainwater Catchment Roof Coating Planning

Projects that collect roof runoff for potable or other regulated uses require more than general coating compatibility. Confirm the intended water use, applicable local requirements, roof materials, treatment equipment, and the current third-party listing for the exact product and use.

Verify the current listing

Do not rely on an older webpage, product-family statement, or similar product name. Obtain the current listing or certification record for the exact Lexis product and confirm the listed application, limitations, cure or conditioning requirements, and maintenance instructions.

Review the complete catchment system

Document the roof substrate, existing coatings and repairs, gutters, first-flush equipment, storage, treatment, overflow, and maintenance plan. A roof coating is only one component of the catchment system and does not establish that collected water is suitable for a particular use.

Confirm compatibility and current instructions

Review the current Lexis product data and safety data for every proposed cleaner, primer, sealant, reinforcement material, and coating. Confirm that the products are compatible with the existing roof and with one another. Complete any required adhesion testing on the actual roof before ordering the full project quantity.

Define the work before ordering

Document preparation, repairs, detail treatment, application method, coverage or film-thickness requirements from approved product data, weather limitations, safety responsibilities, and exclusions. Contractors should include these items in the written scope. Building owners doing their own research should use the same checklist when comparing options.

Ask Lexis about product selection

Send the roof type, approximate area, current condition, existing coatings or repairs, photographs, and project location through the Lexis contact page. These details help narrow product choices without assuming that one system fits every roof.