When was sheetrock invented

Textured Wall Panels. Two of the most common forms of interior wall materials are plaster and drywall. Plaster has been used since ancient times. The earliest plaster was usually made of lime, sand, animal hair and water [source: MacDonald]. How much weight can drywall hold without anchors?

This can be 5 to 10 pounds, but keep in mind that the drywall is an extremely brittle material and, it is not strong enough to hold the weight for a longer period of time.

What Are the Signs of Asbestos? Crumbling drywall. Cracked siding. Damaged shingles. Discolored or cracked floor tiles. Old corrugated cement roofing.

Brittle ceiling tiles or coatings. Frayed building or piping insulation. In the s, Illinois fire-protection engineer Paul Quigg and a team of co-workers at the U. Gypsum Corp. Board Date Code: The board date code is printed on the back of all gypsum board. This code lists the month, day, year, plant, and time that the board was manufactured. Lath and plaster If your home was built before , you most likely have traditional lath-and- plaster walls.

Wooden lath strips are nailed across the framing and then plaster is applied to them. The plaster that oozes between the lath strips is called the key, which locks the plaster and lath strips together. Usually asbestos was only added to walls that were fire rated, such as elevator shaft walls and the walls in commercial buildings. Most houses don't have asbestos plaster in them.

Modern drywall does not use asbestos , but drywall workers — also called drywall tapers and removers — are one of the risk groups for asbestos exposure.

Buildings in the past were often constructed with asbestos insulation or asbestos embedded into other construction materials. Re- plastering the walls then will give you a fresh canvas for your decorating efforts, and if done appropriately, it can last up to 25 years. Expanded metal lath and plaster will be a newer material than older wood- lath. You would not be able to literally "see" asbestos in cement or plaster even if it is present as the individual fibers are too small. But there are downsides; the finish isn't plaster, it's paper, and it has a fuzzy finish that is a dust collector.

The normal half inch residential stuff is susceptible to damage; as Steve writes in an earlier post:. There is also the issue of the acoustic privacy that we have all come to expect. Steve doesn't think this is a big deal, but when I designed my drywall-free summer cottage I cheated in the master bedroom and put drywall behind the plywood in the wall separating us from the kid's room.

Noise just went around it anyways. Steve also makes the point that drywall often hides useful space. There are so many options that can work better than drywall, last longer, are more durable and are in the long term, healthier. OSB board might not be the best example.

There are a lot of reasons to look at other materials than drywall for our walls. Cedar is often used because it is hypo-allergenic. Wood walls have a warmth that you just don't get from drywall. As Steve notes, "You can hang a picture, attach a peg, hang a cabinet or a shelf, and never have to worry about whether it's solidly attached. Toronto architect Martin Liefhebber never uses drywall. He doesn't think it is healthy or green; the little hairs of paper fibre make it impossible to get a smooth finish.

When he is not using stone or wood, he uses real plaster on lath. Gypsum Company. The United States Gypsum Co. In , USG Corporation was formed as a holding company — a reverse merger in which United States Gypsum Company became one of just nine operating subsidiaries. The product was made into small, fire-resistant tiles and sold that way until large sheets were later created to speed up the laying process. Prior to the prevalent use of drywall, also commonly referred to as sheetrock, the use of plaster was the number one product for home builders and a highly desired product by homeowners.

When drywall became available, homeowners rebuffed it for lack of quality and craftsmanship. Drywall was considered cheap and the people of the early s did not want to live in homes considered as such.

The original product we call drywall today was Gypsum Board. The word gypsum is derived from the original Latin term gypsos , meaning plaster. A form of dry plasterboard was called gypsum. This was so named for the product of Gypsum used in its creation and manufacturing process.

Gypsum is a natural product that resembles a form of sand and is found in large beds. Natural Gypsum ranges in color from yellow and pink to gray, depending on the impurities in the gypsum. The largest and most leading manufacturer of drywall or gypsum board is still The U. Gypsum Company with net sales all over the world totaling billions of dollars.

Installing a new roof is a major job that requires planning and coordination between the property owner, our supplier, our staff, and — of course. From tornadoes, hurricanes, hailstorms, and. Any professional roofing contractor will seek to answer all of your questions before progressing on your roof repair or replacement.