What's the best way to vent the top of a shed roof where it meets a vertical wall? It's one of those head-scratching details seldom explained in the plans. Cor-A-Vent's Roof-2-Wall Vent was designed to solve this vexing problem. Suitable for roof pitches of 3/12 and greater, it's sold as a kit containing everything needed to ventilate up to 24 feet of roof: six 4-foot sections of vent, 25 feet of 14-inch flashing, four end caps, and 2 1/2-inch nails. Cor-A-Vent, 800/837-8368, www.roof-2-wall.com

I'll concede that fixing a roof with tape sounds a little dubious, but I've been assured by two commercial roofers that RoofSeal really works. According to the maker, this tape adheres to most types of roofing, including EDPM, TPO, PVC, coated metal — even concrete, wood, and tile. Available in widths from 2 to 48 inches, it can be installed in...

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