HydraShell is a line of two underlayments for metal roofing. HydraShell MAX is a standard synthetic underlayment with a four-layer construction. It’s compatible with all types of finished roofing materials, including steel, and can be used with roof pitches as low as 0.5:12.
HydraShell Supreme SA is ideal for high-temperature, self-adhering applications and has a cool gray surface to reduce heat buildup.
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