gypsum concrete roof deck systems

Guidelines and Procedures | NRDCA.orgNRDCA Guidelines and Procedures. The NRDCA is developing industry consensus guidelines and quality control procedures for the application of systems represented by Association members. The documents represent an industry consensus on the subjects of application, quality control and repair or replacement of various roof deck systems. These current and future documents should be valuable documents for the construction community. T

Gypsum Concrete | NRDCA.orggypsum concrete roof deck System. gypsum concrete roof deck systems have been installed since the early 1950's in all types of commercial markets. These include office complexes, schools, public buildings, shopping malls and warehouses located throughout the United States. Many of these installations continue to perform and provide support to roofing materials that have been added over time. Repair and reroofing of these constructions continues everyday with immense cost ...

USG Structural Panel Concrete Roof Deck | USGStructural Panel concrete roof deck Panels are durable, non-combustible roof panels that offer fast installation and are buckle- and warp-resistant. ... A concrete roof deck that can be combined with other noncombustible materials to create 1- and 2-hour fi re-rated roof-ceiling assemblies. Strong .... Unlike traditional roofing systems where multiple layers are required, concrete roof deck is both the noncombustible structural sheathing and either the nail base or thermal barrier. Strong ...

Loadmaster: A Structural Composite Roof Deck SystemLoadmaster is an engineered roof deck system composed of a high tensile steel sections with thermal insulation and high performance Duraflex Mineral Board mechanically anchored to the steel sections with engineered attachments to provide structural composite strength. Through the use of engineered and ... See our Retrofit Section for information on retrofitting Loadmaster-Lightweight Insulating concrete-Poured gypsum roof decking. Loadmaster provides a complete roof ...

Retrofitting Structural Composite Roof Decks - LoadmasterIn roof decks, the rst widespread use of SCA was the poured gypsum roof deck on bulb tees that began over 70 years ago. It was produced by several manufacturers such as United. States gypsum Co., Bestwall Company, and Georgia~Pacic Corp. Next came lightweight insulating concrete [LWIC] over galvanized form deck, which fol- lowed some years later and has now been around for 60 years. The initial LWIC for roof decks con- sisted of a lightweight aggregate (usu- ally either ...

What You Should Know About Your Cement Roof Deck? - NIR27 May 2014 ... When it comes to roof decks, you probably don't pay much attention to what is underneath your roof membrane. Just like roof membranes, there are a variety of different types of decks that provide support and stability to the roof system as a whole; metal, concrete, gypsum and even wood. Some come precasted, while others are constructed/poured on-site. Hopefully, your architect/designer of the building took this into account before chosing what type of roof deck was ...

Roof Decks: Don't Underestimate the Backbone of the Roof System ...24 Mar 2014 ... roof deck Types. There are many types of roof decks being installed today: Steel; Precast concrete panel; Structural concrete; Cementitious wood fiber; Wood planking; Plywood/OSB; Poured gypsum. Some decks are covered with topping fills that become the base for the roof system and may also be an integral structural component: concrete; Lightweight insulation concrete topping; Lightweight aggregate concrete topping. Other deck toppings are available, such as ...

section 03 51 16, gypsum concrete roof decks - WBDGgypsum concrete roof deckS. SPEC WRITER NOTES: 1. Delete between // ____// if not applicable to project. Also delete any other item or paragraph in the section and renumber the paragraphs. 2. This is a sole source system. Prior approval for its use is required. 3. Insure details show system. PART 1 - GENERAL. 1.1 DESCRIPTION. A. Section specifies gypsum plank systems for fire rated roof decks //. B. Optional system for and roof decks. //. 1.2 RELATED WORK. A. Steel ...

Retrofitting Gypsum - LoadmasterRetrofitting gypsum. RETROFITTING / REroofING POURED gypsum deckS. The poured gypsum roof deck consists of steel bulb tees, a form board (usually composed of gypsum or fiberglass), wire reinforcing mesh, and the gypsum concrete. The bulb tees, which are very strong vertically but quite flexible horizontally, provide the long span strength. The gypsum concrete, which spans tee to tee, encases the tees and prevents them from rotating or deforming horizontally when ...

Gypsum Roof Decks | New Century RoofingOld bald asphalt roof over wet fiberboard over asphalt/felts and the white is a gypsum deck. Poke too hard and the tool will go through the deck. Flat roofing Information. Evaluating an Existing roof · What Length of System Fits Your Needs · Extending roof Life · 10+ Year Solution · 20+ Year Solution · Job-Specific Issues · Green Issues. roofing systems & Components Examples. roof decks · concrete · gypsum · Steel · Tectum · Wood · Insulation · Waterproofing. We are proud to be ...

Roof decks A to Z Part 4: Poured Gypsum - RCI, Inc.patible with built-up roofing, the apparent system of choice at the time. They are rarely seen in new construction of modern proj ects, however, and that increasing obscurity is the cause for confusion on several fronts. The author has often witnessed this type of deck being mistaken for other cemen titious substrates. As poured decks go, gypsum may indeed be lighter weight than structural concrete, but it is by no means lightweight concrete, vermiculite concrete, or insulating concrete ...

It All Starts with the Roof Deck - BuildingsThe basic roof decks commonly used with commercial membrane roofing systems are: Steel light-gauge, cold-rolled sections, welded or screwed to bar joists (see FIG 1); Wood sheathing sawed lumber, plywood or OSB (oriented strand board); concrete poured-in-place or precast; gypsum precast or poured-in-place; Cementitious wood fiber (see FIG 2); Composite decks of lightweight insulating concrete on corrugated steel or form boards (see FIG 3); Thermoset, compacted ...

Gypsum Repair Western FireproofingUSG Securock USG-Securock-bag. USG Securock Brand gypsum-concrete Patch is mill formulated and composed of specially calcined gypsum and wood chips or shavings. It is mixed at the jobsite with clean water only and poured in place as a patch for existing gypsum decks. USG Securock gypsum-concrete Patch is noncombustible and used in several UL-approved roof deck systems. Securock Data Submittal ...

Gypsum Roof Deck Replacement Procedures - NRDCA.orgNRDCA 500 gypsum roof deck Replacement Procedures*. gypsum concrete. Wire Mesh. Formboard. Bulb or Truss Tee. History. gypsum cast over formboards and structurally supported by bulb tees or truss tees was introduced as a roof deck substrate in the 1940s. This system provides fire resistance, seismic and wind load diaphragm values in addition to an economical roofing membrane substrate. The gypsum roof deck system is supported by bulb tees generally spaced ...

Systems Engineering Roof Decksstructural concrete deck is a design issue and JM will not be responsible for problems related to the structural deck as a result of utilization of mechanical fasteners. 7.0 Poured gypsum decks. 7.1 While not common today in new construction, poured gyp- sum decks are found in many existing structures. Whether new or existing, poured gypsum can provide a satisfactory substrate for built-up, modified bitumen, or single-ply roofing systems, when properly specified and installed.

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