People who don’t like to detail flashing tape around pipes and other curved wall penetrations might consider Zip Liquid Flashing. This liquid-applied product is being marketed as a complement to flashing tape and will waterproof and air-seal penetrations in one step. The maker’s engineers told us that it combines the waterproofing properties of polyurethane with the long-term durability of silicone. The application temperature range is 35°F to 110°F. It can be applied to wet surfaces and dries tacky in 15 minutes. It’s sold in 20-ounce sausage tubes or cartridges; a tube costs around $20.

Huber Engineered Woods, 800/933-9220,

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