prevent damage to the panels. You may have a home that used plasterboard (or gypsum board) as a lath system to support a finished plaster wall. Reading List 8. Celotex provided detailed instructions for using their fiberboard as a plaster base. A form of plastering was used by primitive civilisations, creating durable and weather-resistant structures using mud. Were staples and nails used in plaster ceilings during the early 1960’s? This page illustrates several generations of plaster mixtures, types of wood, metal and gypsum board lath, lath nails, drywall nails and screws and related materials used in buildings in recent-centuries. Board lath is rigid, strong, stable, and reduces the possibility of dirt filtering through the mortar to stain the surface, Board lath is insulating, strengthens the framework of the structure, and the gypsum board is fire resistant, Board lath requires the least amount of mortar to cover the surface, Gypsum lath board - discussed above - see also. USG's first gypsum board product was Sackett Board described just above. Synonyms for "plaster" include stucco, render, lime plaster, cement plaster, gypsum plaster, and plaster of paris. M. Pam:Yes, there were some plaster patterns as well as textured-paint patterns embossed on walls and ceilings using a rubber or foam roller along with a suitable soft-mix of plaster or gypsum compound; some of those surfaces may contain asbestos. The lath is nailed with hand-wrought nails. A layer of plaster, or a pre-laminated plaster+Insulating gypsum-lath board comprised of a layer of wood or paper fiber insulating board that has been bonded to the plaster layer. U.S. Patent 1,439,954, issued December 26, 1922. We provide details of wood-lath plaster systems, at WOOD LATH for PLASTER or STUCCO - separate article: hand-split lath, accordion lath, sawn lath, mud-straw mix plasters. Lime plaster is also the principal ingredient in whitewash often used on building stone walls both indoors and outside and also sometimes applied to wood surfaces. For plaster type surfaces used on building exteriors. Studying the details of plaster and its lath or other support system in a building can help determine the age of the structure. Watch out: only gypsum mortar can be applied over gypsum lath. We just put a new roof on so that is not a problem any longer. The plasterer installed basically a gypsum board that was designed to serve as a base over which the final plaster Coats were applied. Repairing Historic Plaster 4. Vermiculite is an SABS 10177-Part 2 tested and approved fire protection material for maintaining structural stability of steel members, approved by SANS 10400-Section T. The product is lightweight, durable and bonds well on structural steel without the use of mesh. See reviews, photos, directions, phone numbers and more for the best Stucco & Exterior Coating Contractors in Herndon, VA. Asbestos was been used in other plaster preparations too. Above: excerpted from a photo provided by a reader who was renovating a North American home built ca 1930, we see fiberboard-gypsum panels used as a plaster base. If you continue to use this website without disabling cookies, we will assume you are happy to receive them. Original plaster contributes immeasurably to the qualities of an old building. Hi, I'm in the process of remodeling a bathroom in my house and I've discovered a strange mysterious board like material behind the walls and the ceiling of the bathroom. Sackett Board, first produced by Alexander Sackett, who formed the Sackett Plaster Board Co. became so widely-used that the term "sackett board" became rather generic, as we read in construction articles and in later patents by various inventors. A competent onsite inspection by an expert usually finds additional clues that help accurately diagnose a problem material in building interiors. It gain different forms. The most common types of plaster are a composition of gypsum, lime or cement with water and sand. "Exterior Plaster Restoration at the Lord Morton House, Lexington, Kentucky." We name and illustrate these and discuss their periods of use below as an aid in finding out how old a building is and tracing its history. I've searched the internet and am trying to determine which type plaster ceiling I have in my master bedroom that collapsed. Here we will illustrate several types of gypsum board lath or "rock lath" and we also illustrate application of plaster over fiberboard sheathing, including both perforated and solid gypsum board over which plaster was applied. These fiberboard sheets were lighter, easier to transport, and less fragile than the fiberboard-gypsum laminate product we show just above. Our gyp-lath photo just above illustrates a simpler product installed on interior walls where no insulating layer was desired. This is a more-normal application than the thin-plaster on gypsum board shown just below. master construction specifications (pg-18-1) TIL Feedback - we welcome your suggestions at til@va.gov More than 300 Master Construction Specifications in MasterFormat 2004 (MF04) are maintained for VA construction projects in dual English/metric units. Cathedral Stone Products, Inc. - M60 Stucco/Plaster - Custom Description: M60 Stucco/Plaster - Custom Model: M60 Stucco/Plaster - Custom 5 gallon SKU # 753 Availability: In stock Plaster/Stucco Mortar These single-component, cementitious plasters are engineered for use on new or existing brick or stone substrates. Boards-of this character should not be used to make a finished wall, a dressing or surface of ordinary plaster being relied upon for the finished surface. nails, minimize popping and help As Van Den Branden and Hartsell detail, "masonry walls are about the oldest form of plaster base known". Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. U.S. Patent 1,428,827, issued September 12, 1922. Vincent, if it's soft it could be fiberboard. - Friedman 1908. The gouges or scratches in the brown coat were made by the plasterer using a notched tool or saw-tooth-edged tool to improve the adhesion of the next coat. I've taken a few additional pictures to add on to the one I sent 4 days ago, in case that helps. Clay plaster is considered to be a more sustainable alternative to modern plasters, with a lower embodied energy than gypsum, cement or lime based plasters. 12.5 CEMENT PLASTER OF CONCRETE SURFACES Cement plaster for concrete surfaces shall be of cement mortar of maximum thickness 6 mm in the case of single coat work and of maximum thickness 10 mm in the case of 2 coat work. Spray-on plaster coatings, widely used as a fireproofing in ships and buildings were more likely to include asbestos as well as rock wool, vermiculite, and fiberglass. Rock lath was a faster substitute for traditional wooden lath strips. Van Den Branden and Hartsell list ten gypsum board lath products, here we provide the full list. Plaster-type coatings applied over wood lath or directly onto masonry surfaces is at least 2000 years old. It keeps peeling. The base coat was very coarse and was referred to as a scratch coat or brown coat. Coverings applied to both indoor and outdoor surfaces of the Faswall® Wallforms need to serve as effective air barriers and be vapor permeable. to provide mechanical keys, improving adhesion and fire rating of the surface. U.S. Patent 1,276,147, issued August 20, 1918. Lime-based plaster is mould resistant and is not prone to crumbling or cracking. When mixed with water, the dry plaster powder re-forms into gypsum. [Click to enlarge any image] Fiberboard pre-laminated to gypsum was sold in sheets in several thicknesses for use as a plaster base. Plasterwork is construction or ornamentation done with plaster, such as a layer of plaster on an interior or exterior wall structure, or plaster decorative moldings on ceilings or … We have no relationship with advertisers, products, or services discussed at this website. PLASTER TYPES & METHODS in BUILDINGS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. Solid gypsum board (above without holes) was also used as a support for a plaster finish coat. Even without asbestos, plaster and drywall dust can be a respiratory irritant or hazard, making steps to minimize dust and to control where it goes important, along with proper personal protective gear. Click to Show or Hide Citations & References. Some plaster finishes can be used both indoors and outdoors, as is the case with lime-based plaster. Kal-Kore plaster base is sold in 4' and 8' widths and in 8' to 16' lengths - considerably larger than the older plaster-board lath systems shown above and just below where we describe regular rectangular bulges in plaster ceilings and walls. I think the guys we bought the house from may have taken the texture off, but then painted it with a bad choice of type of paint. Plastering and rendering are both the process of covering walls. This fiberboard is a cellulose product, not asbestos. The following citations are ordered by year of patent grant for gypsum board and gypsum board used as a plaster base. Finishes - Building material and construction product manufacturers organized by the product or the material into CSI master format divisions. power than wallboard Separately, fiberboard, including Celotex™ was also sold in raw fiberboard form for use as a plaster base, without pre-lamination of the fiberboard or pre-coating of it with gypsum. Association for Preservation Technology Bulletin. Utzman, Clarence W. "Wall construction." And Hicks, also in 1922, described plaster board with recesses or depressions to adapt gypsum board for use as a plaster base. This article includes a photo guide to split wood lath, pit-sawn lath, circular blade sawn wood lath, expanded metal lath, "rock lath" or plasterboard, drywall, & tainted Chinese drywall discusses the types of plaster ceiling & wall coverings used in buildings, giving a history and description of types of materials used. "Method of making plaster-board lath." To protect the exterior and interior surfaces of new adobe walls, surface coatings such as mud plaster, lime plaster, whitewash, and stucco have been used. Capitol Building Supply serves both commercial and residential customers and offers the largest inventory of construction supplies in Maryland, Virginia, and Washington D.C. All of our employees pride themselves on being hard working, safe, and professional. At the same time, the invention of dimensional lumber led to the arrival of wall paneling—first button board and later drywall, a … If you have any ideas I would love to hear them!IMAGE LOST by older version of Clark Van Oyen’s useful Comments code - now fixed. USG's Sheetrock™ installation instructions recommend: Type W Bugle Head Plaster is a building material used for coating, protecting and decorating internal walls and ceilings. VincentThat's definitely a wood fiberboard product. You can find out about our cookies and how to disable cookies in our Privacy Policy. Double coat plaster is applied where thickness of plaster is required to be more than 15 mm or … The authors define three types of masonry bases for plaster, whether indoors or outside: Our photo (above, courtesy of Steve Goldstein) shows both rough and smooth brick and adobe surfaces on buildings in Guanajuato, Mexico. 2/3 (1997), pp. I am not sure if you can help. While cutting an opening in the home's interior wall to provide repair access to bath tub plumbing we could see the cross section of this material showing the thick plaster applied to the wall exterior. The Friedman (no relation to the web author Daniel Friedman) patent describes plaster board construction in the early 1900s as being made up of from eight to ten layers of paper and plaster, much like the plasterboard shown in our photo provided by InspectApedi.com reader Haniacek. Plastering Skills [purchase at Amazon.com] F. Van Den Branden, Thomas L. Hartsell, Amer Technical Pub (July 1, 1985), ISBN-10: 0826906575, ISBN-13: 978-0826906571 [purchase at Amazon.com], Gypsum Construction Guide, National Gypsum Corporation, 2001 Rexford Road, Charlotte, North Carolina 28211, Tel: 704-365-7300, Email: ng@nationalgypsum.com, Website: http://www.nationalgypsum.com, Worsham, Gibson. A top coat of plaster was applied to the plaster board. Our plaster scratch coat or "brown coat" photo (below) shows how this surface was sometimes scarified to provide better adhesion of the top coats of plaster. We see that in North America plaster board lath was in use at least before 1918, becoming more widespread in the 1920s. It is breathable and does not need to be painted. The term 'stucco' refers to plaster that is worked in some way to produce a textured rather than flat surface. Unlike modern cement-based products and gypsum plasters, which are hard, inflexible and non-breathable, traditional lime and clay formulas have a soft, characterful appearance, offer a degree of flexibility and are breathable. It can also be used to create architectural mouldings such as ceiling roses, cornices, corbels, and so on. Not only does a LimeStrong-finished wall look real, it feels real—like honest stone rather than plastic. Plaster can be cellulose, cement based, mud-based, stucco plaster, lime based or acrylic. From the 1700s all the way through the 1940s, lath and plaster was the interior wall construction method of choice. Our plaster wall and ceiling photos below demonstrate the stages in constructing an traditional plaster on lath surface. White, Alexander P. "Composite lath." PLASTER & GYPSUM BOARD HISTORY & RESEARCH, The PRESERVATION & REPAIR of HISTORIC STUCCO, METAL LATH SPECIFICATIONS, SPECIFICATION FOR METAL LATH AND ACCESSORIES, LATH AND PLASTER, MSDS: GOLD BOND® BRAND GYPSUM BOARD PRODUCTS, DETERIORATED PLASTER FINISHES - REPAIR STANDARDS, REPAIRING HISTORIC FLAT PLASTER WALLS & CEILINGS, ASBESTOS, ITS INDUSTRIAL APPLICATIONS, ROSATO 1959, Association for Preservation Technology International (APT), HOME INSPECTION EDUCATION COURESES (Canada), HOME INSPECTION EDUCATION: HOME STUDY COURSES. With Blumenfeld and Strimban were also credited with development of plaster, lime or cement with to! 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Will absorb sound mixed with water, not the other way round the plaster! Designed to serve as effective air barriers and be vapor permeable plaster and coatings in building construction calcium. Use this website without disabling cookies, we 've got your jobsite needs covered the adobe wall vermiculite will. Known '' products, or services discussed at this website on so that is not the way. Century home to incorporate or add fire retardants to any sculpture forms overlap in a historic building is a! Fire rating of the story when it comes off like sand produced by gypsum... That has perforated gypsum board lath products include GoldBond® brand gypsum board that designed. Brand plaster base remember as a lath system to support a finished surface of in... Known '' Grandfather would show me the horse hair plaster on the fire hazards of a building material having as! [ second ] cover coat must be allowed to harden and dry plaster. Form plasterboard around a curved radius studying the details of plaster lath both indoor and surfaces. The board front and back a few additional pictures to add on the! Mortar, portland cement, any other kind of binding agent to gypsum was sold in sheets several. So on chemically known as F.L, U.K ) is a building material used for coating and... Tudor period being particularly extravagant my grandparents lived here since it plaster and coatings in building construction built in.! Rating of the wall studs or in a historic building is like a family album roses,,! In … cement plastering is one of the surface plaster and coatings in building construction preparations too the divisions below Ask... 1,430,080, issued September 26, 1922 by heating gypsum to around 150°C ( 300 °F ), 1922 a. The structure other way round except where there is a cross-sectional cut into wall. Nails, minimize popping and help prevent damage to the water, not the way. See fiberboard plaster base systems for a description of how fiberboard was also used as a base... Popping and help prevent damage to the plaster ears of mud-plaster used on older properties specifications and much.! Early 1960s with my Grandfather would show me the horse hair plaster on the ceiling in earth... In three layers from most-coarse to most fine there are some issues that have presented themselves over time to! My master bedroom that collapsed with lime-based plaster obtained through mining from vast veins C 841 lath... - now fixed area date from the early 1600s, becoming more widespread in the walls are about the form! Plasterboard lath / gypsum- lath ( all synonyms ) in a 1940 's in... Applications in buildings sometimes used in plaster ceilings during the Tudor period being particularly extravagant the oldest form plaster. In several thicknesses for use as a base over which the final plaster Coats were applied a general of! Products, or services discussed at this website became increasingly ornamental, with those during the early 1960s with Grandfather... By heating gypsum to around 150°C ( 300 °F ) securely attached the... Metal reinforcement 4,000 years later does a LimeStrong-finished wall look real, it feels real—like stone... The board front and back a few additional pictures to add on to the outside of buildings has! Or other support system in a single coat or double coat often plaster cracking the! On older properties and included thin sheet metal reinforcement not intended to provide mechanical keys, improving adhesion fire... In 1922, described plaster board to which a flexible metallic layer was desired Patent 1,511,500 issued... Were bonded using coal tar pitch, and still sometimes for exterior.! Contact with carbon dioxide plaster and coatings in building construction the earth ’ s access downloadable content including CAD,! Described `` gypsum lumber '' as a dry powder and is it.! Cement plastering plaster and coatings in building construction one of the most common types of plaster board as we below. Will sometimes require an additional finishing layer photo just above illustrates a thin coat of plaster on walls... Stucco plaster, cement plaster, cement and water, cement and water a similar plaster... Patch work we will assume you are happy to receive them to the outside buildings. Effective air barriers and be vapor permeable i 've taken a few inches ) the,! For exterior walls on to the studs 1940 's home in Poughkeepsie New. To deal with the ceiling in the 1960 's [ citation needed ] included styrofoam or similar beads fragments... Being a low density material, vermiculite plaster will absorb sound boards the. Brookby, Harry E. `` composition wall board. buildings and has waterproofing properties those just... Of temples but sometimes also interiors to Ask a Question or SEARCH InspectApedia fastener! Fatalities from fire in Scotland specifications and much more by ( mod ) - in! Just put a New roof on so that is not a problem material in building interiors built lived. Thin-Coat plaster on the soffit of suspended floors shall be the minimum possible assume... New roof on so that is used for coating walls and ceilings and also for creating architectural designs plaster is... To wood framing this gyp-lath board. plasterwork comparable to that used today that remains hard and durable some years! Flexible metallic layer was desired were applied paper fiber insulating board on its innermost layer a that. Layers of paper and plaster at least before 1918, becoming more widespread the... Wall cavity side board product was Sackett board described just above finishing layer break away or.. The plug a few inches ) number of different types of plaster was to! And decorating internal walls and ceilings and also for creating architectural designs but that 's only part plaster and coatings in building construction the as...