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We've all seen the details showing an aluminum flashing along the top of deck joists. It makes a lot of sense to keep water off the deck framing, especially where pressure-treated lumber is not used. But when it comes to bending a drip edge on a long strip of 24- gauge aluminum, our enthusiasm begins to wane. That's where Deck Seal comes in. Deck Seal is an asphalt rubber strip laminated to aluminum foil with an adhesive backing. It's 45 mils thick (about 1/16-inch), comes in 33- foot-long rolls, and is available in 1 1/2- , 3 1/2-, and 6-inch widths. Deck Seal bends easily by hand and cuts readily with a utility knife. The 6-inch