CertainTeed WinterGuard Pro HT Waterproofing Underlayment

The CertainTeed WinterGuard PRO is a premium waterproofing underlayment engineered to protect your roof from water intrusion in the most vulnerable areas, eaves, valleys, and low-slope sections. Specifically formulated to handle high temperatures under metal roofs, this self-adhering membrane forms a durable seal around nails and resists cracking or drying over time. As part of the trusted CertainTeed Integrity Roof System, it works in tandem with shingles, accessories, and ventilation for long-term performance in any climate. Whether you're installing slate, tile, or metal roofing, WinterGuard PRO is your go-to solution for a watertight, worry-free installation.

Please Note: WinterGuard is a vapor barrier and must be installed with proper deck ventilation. Avoid excessive solvent-based adhesives and do not use silicone sealants. Cover within 6 months; do not expose to sunlight or install over shingles or other underlayments.

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