Alpha Pro Tech, Ltd. develops, manufactures, and markets disposable protective apparel and infection control products, operating through two segments: Building Supply and Disposable Protective Apparel. The Building Supply segment offers weatherization products such as housewraps, flashing, seam tapes, and synthetic roof underlayment. The Disposable Protective Apparel segment provides shoe covers, caps, coveralls, lab coats, gowns, hoods, face masks, and face shields. Products are sold under the Alpha Pro Tech brand and private labels, primarily for cleanrooms, industrial safety manufacturing, health care facilities, and building and re-roofing sites. The company was founded in 1983 and is headquartered in Aurora, Canada.