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Question DetailsAsked on 10/10/2014

what is the difference drywall and sheetrock

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Technically, from the olden days when I used to drive my dinosaur to the jobsite, sheetrock was portland cement-based silica anhydrite board - similar to the concrete backer board used today and almost as hard but not quite as water resistant and was used under exterior finishes and in moisture exposed locations such as locker rooms and bathrooms and basements and behind tile and for screened porch ceilings; and drywall is gypsum wallboard and not at all water resistant.

However, these days most people use the terms interchangeably and normally mean regular gypsum wallboard like most walls and ceilings are done in. If in doubt ask exactly what they mean, because there is regular gypsum wallboard, more fire-resistant varieties (Type X being the most common), water-resistant wallboard ("green board"), and concrete backer board - all of which some people call "sheetrock", but each has its own uses or place it is required to be used.

Answered 5 years ago by LCD

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