Read the product-specific requirements
Some silicone products are designed for resistance to ponding water. For example, Henry lists ponding-water resistance for Pro-Grade 988. That property does not establish that every roof is a suitable candidate or remove the need to examine drainage.
Compare the complete system
- Existing substrate and compatibility of previous coatings.
- Cleaner, primer and detail reinforcement requirements.
- Repair scope and treatment of suspect wet areas.
- Future repair products and maintenance instructions.
The silicone-versus-acrylic comparison provides questions to use with a contractor.
Ask what evidence supports selection
Request a specification tied to your roof and documented adhesion testing where required. Product category alone does not establish bond strength, warranty eligibility or building-specific performance.
This is planning information, not a site assessment or installation procedure. Use current product documents, qualified personnel and site-specific requirements for a project decision.