Abstract: An exterior insulated finish wall assembly includes an exterior panel member and an insert member. The exterior panel member includes a rigid insulative substrate having a body portion and a tail portion extending from the body portion, wherein a recess is defined by a sloped surface and a back surface of the tail portion. The insert member is disposed within the recess and is sized and shaped to correspond to the recess. A drainage channel is defined between the sloped and back surfaces of the tail portion and the insert member.

Abstract: Embodiments disclosed herein include fastener assemblies. In an embodiment, a fastener assembly comprises a sleeve with a hole, an inner surface, and top and bottom ends. The top end has a planar surface, and the inner surface has a cylindrical surface. The fastener assembly includes a fastener downwardly extending through the hole, and having a drive slot, a head, a shank, and a threaded region. The head is positioned within the bottom end. The head is separated from the threaded region by the shank. The fastener assembly comprises a cover disposed on the top end and having an access hole and top and bottom surfaces. The cover is welded to the sleeve to define an inner cavity between the cover, sleeve, and fastener head. The access hole is positioned over the drive slot. The cover, sleeve, and fastener comprises materials having high temperature, strength and oxidation resistances.

Abstract: A method of fabricating panels includes providing an insert having an interior portion with a top portion and a positioning stop opposite the top portion, and an exterior portion including a fastener hem. Further, the method includes placing the insert in a mold such that only the fastener hem and the positioning stop contact the mold and centering the insert in the mold with the top portion and the positioning stop. The method also includes filling the mold with a casting material such that the interior portion is submerged in the casting material including the top portion, but some of the positioning stop is not submerged in the casting material, curing the casting material to form a panel on the insert, and removing the panel form the mold.

Abstract: An anchor assembly for anchoring an object on a wall includes a first anchor component and second anchor component, each anchor component pivotable relative to the assembly and having a back side and a front side, and each anchor component having at least one curved wall penetrating retainer extending therefrom. The anchor assembly has an install orientation in the wall in which the wall penetrating retainer of each anchor component is inserted within the wall for a jaw-type grip of the wall.

Abstract: A flooring board spacing assembly including an elongate platform member locatable on a flooring joist, the platform member having a plurality of first spacers evenly spaced at regular intervals along the length of the platform member, wherein, in use each of the first spacers separates adjacent flooring boards located on the platform member and forms a predetermined space between the adjacent flooring boards.

Abstract: A wall assembly includes tracks structured to be coupled to supports and wall studs coupled to the tracks. The wall studs include a first sidewall, a first web coupled to the first sidewall and a second sidewall coupled to the first web to define a first channel. The wall studs further include a second web coupled to the second sidewall and a third sidewall coupled to the second web to define a second channel as well as a third web coupled to the third sidewall and a fourth sidewall coupled to the third web to define a third channel. The second web is offset from the first web and the third web to isolate each of the channels and attenuate sound waves. Further, the studs may include one or more openings for further isolation and to reduce the amount of steel in the studs, which reduces cost.

Abstract: The invention relates to a drywall construction system comprising a plurality of metal profiles which at least on one side are panelled using dry construction boards. At least on this one side spring rails are arranged between the metal profiles and the dry construction boards. The invention is suitable, in particular, for improving sound insulation in lightweight steel constructions.

Abstract: The present invention provides for a metal stud for use in sound attenuating wall systems utilizing high density, abuse resistant wallboard, the metal stud having specific steel chemical and mechanical properties to result in increased sound attenuation properties while maintaining the load carrying capacity and screw performance providing improved economics. The metal stud is a generally C shaped metal stud constructed of 0.0180 steel having at least 57 ksi strength having two parallel spaced apart flanges joined along the length of one edge by a central web and being provided with an in-turned double thickness hemmed ledge along the length of the second edge, the flanges having a width of greater than 1? inches between the one edge and the second edge, each of the flanges being provided with a reinforcing rib centrally located in the flange extending the length of the flange.

Abstract: A frame system for a building structure includes beam members. Each beam member comprises two opposed, parallel flanges. A web is interposed between the flanges. Spreader members comprise two opposed, parallel side flanges, a web interposed between the side flanges and two opposed end flanges bridging the side flanges at respective terminal ends of the web. The beam members and the spreader members are configured to be fastened to each other to form a frame assembly.

Abstract: A panel comprises a board having a front face and a back face. The back face has a first edge and a second edge that is aligned with the first edge. A first set of tabs and a second set of tabs are attached to the back face, the first set of tabs being positioned along the first edge of the back face and the second set of tabs being positioned along the second edge of the back face, each individual tab being oriented transversely to the respective edge and protruding from the respective edge. The positions of the individual tabs on the first edge of the back face are offset from the positions of the individual tabs on the second edge of the back face.

Abstract: The invention relates to a method for producing a drywall. In the method, a panel made of a plurality of paneling boards (3) placed alongside one another is fixed to a frame structure (1). According to the invention, fixation elements (5) are first affixed to a substructure (2) in the edge area of a paneling board (3) and/or in the joint area (4) of two adjacent paneling boards (3). Then, by means of a clamping tool (7) for example, fastening elements (6) are set alongside the fixation elements (5), the respective paneling board (3) being simultaneously clamped between the substructure (2) and the fastening element (6).

Abstract: A wall panel is configured as a load-bearing structure for supporting vertical loading in a building. The wall panel forms a frame with first and second faces configured to receive sheathing and has thickness defined between the first and second faces. The wall panel includes a plurality of vertical load-bearing columns centrally disposed between the first and second faces of the wall panel frame. A load distribution member is disposed at the top of the wall panel and is coupled to the load-bearing columns, which are supported at the bottom of the wall panel by a lower member. A plurality of sheathing supports are disposed on opposite sides of the load bearing columns, and each includes an attachment surface disposed at a distance from the load-bearing column. The attachment surfaces define the respective faces of the wall panel frame and are configured to hold the sheathing.

Abstract: According to the present invention, a fastener system is provided having an anchor (20) and a washer (40). The anchor includes an upset stud shaft (28) to which the washer is attached. The fastener system is preferably used in the inventive method of restoring/applying cladding such as plaster or plaster-like materials such as stucco. According to the inventive method, the anchors of the fastening system are driven into the building structure before application of a moisture barrier membrane. After application of the membrane, a support mesh (90) is secured to the anchors using the washers (40). This allows the membrane to provide a watertight seal around the fasteners. The inventive method may be used in new construction or restoration.

Abstract: A fastening assembly includes a housing, a press, and a sealant material located in a chamber formed between surfaces of the housing and the press. The fastening assembly may be used to install cladding to a structure.

Abstract: The present invention pertains to an assemblage of sealing nail essentially containing a nail, a propeller, and a blocker that is partially extended beyond the propeller. Wherein, the nail would sequentially penetrate the propeller, the blocker, and then a plank. By means of the nail entering the plank, the propeller and the blocker would be simultaneously urged to densely cover up where the nail inserted. Therefore, a preferred sealing efficiency between the nail and the plank is achieved to guarantee a favorable grouting on the plank.

Abstract: A fastener including a body having a predetermined axial length, wherein the body includes a screw head at one axial end of the body, a threaded portion at an opposite axial end of the body and an unthreaded shank portion extending between the screw head and the threaded portion, and wherein the shank portion has an axial length in excess of at least one-third of the axial length of the fastener body.

Abstract: A rigid guard for a metal wall stud comprising a flat outer wall with apertures for accommodating fasteners to affix it to the outer side of a wall stud, a first pair of flanges extending perpendicularly from one edge of the outer wall at upper and lower ends of the guard, and a second pair of flanges extending perpendicularly from an opposite edge of the outer wall at the upper and lower ends of the guard and each carrying a laterally inturned lip on its free end.

Abstract: A fastener including a body having a predetermined axial length, wherein the body includes a nail head at one axial end of the body, a textured portion at an opposite axial end of the body, a shank portion extending between the nail head and the textured portion, and wherein the shank portion has an axial length in excess of at least one-third of the axial length of the fastener body, a raised ring integrally formed in the shank portion intermediate the nail head and the textured portion and a resilient ring seated against the raised ring on the side of the raised ring opposite the nail head.

Abstract: A fastener for securing a 0.625 inch (? inch) thick gypsum wallboard panel to a wooden building frame. The fastener includes a body having a predetermined axial length. The body includes a cupped head at one axial end of the body, having a diameter that is at least in excess of 0.297 inches ({fraction (19/64)} inches), a threaded portion at an opposite axial end of the body and an unthreaded shank portion extending between the cupped head and the threaded portion, wherein the shank portion has an axial length that is at least in excess of one-third of the axial length of the fastener body, and a shank portion diameter that is at least in excess of 0.098 inches.

Abstract: A self-furring wire lath has stiffening trusses. In a preferred embodiment the lath comprises a grid of intersecting transverse and longitudinal wires welded at their intersections. Stiffening trusses are formed at bent sections in the transverse wires by first longitudinal wires affixed at the shoulders of the bent sections and second longitudinal wires affixed on the bent sections. A barrier layer is disposed between the first and second longitudinal wires. A building paper backing may be affixed to the barrier layer. The lath reduces cracking and wastage of stucco while remaining easy to work with.

Abstract: A composite construction panel having a thin panel of concrete material and a reinforcing grid of sheet metal studs with embedment portions which are actually embedded into the concrete panel, each of the studs having a web, main web openings through the web, a right angular flange formed on a free edge of the web, an embedment angled flange portion formed along the opposite edge of the web, an edge strip formed on the angled flange at an angle thereto; and, spaced apart angled flange openings formed in the angled flange for flow of concrete therethrough. An alternate form of stud has a triangular tube structure along one edge of the web. Another form of stud has a discontinuous webs defining spaces between them. In one embodiment two concrete panels may be secured to the studs in spaced relation to create a hollow structure.

Abstract: A shear wall system comprises stucco fasteners consisting of an elongated first portion that is driven into a wood frame wall, and an elongated second portion that is completely embedded in a stucco wall panel. In one embodiment, the fasteners consist of an assembly having a first element that is driven into the wood frame wall, and a second annular element receiving a portion of the first element and that is embedded rigidly into the cement stucco wall. Ductile movement of the fastener components with respect to wood frame wall and the stucco wall provides energy dissipation.

Abstract: The present invention comprises various combinations of 2″×4″, 2″×6″, 2″×8″, 2″×10″ and 2″×12″ members stacked on top of one another with one longitudinal edge of each member co-aligned. In this configuration, the non-aligned longitudinal edges form shallow steps which act as a ramp, allowing wheeled implements to easily transition form ground level to the floor level of the portable building.

Abstract: A shear wall system comprises stucco fasteners consisting of an elongated first portion that is driven into a wood frame wall, and an elongated second portion that is completely embedded in a stucco wall panel. In one embodiment, the fasteners consist of an assembly having a first element that is driven into the wood frame wall, and a second annular element receiving a portion of the first element and that is embedded rigidly into the cement stucco wall. Ductile movement of the fastener components with respect to wood frame wall and the stucco wall provides energy dissipation.

Abstract: A fastener clip for use in constructing a security wall system, and a security wall system so constructed are disclosed. The fastener clip has an elongate smooth surfaced planar body, a counter-sunk fastener recess formed s centrally within the body, a fastener opening defined within the recess and extending therethrough, and at least two spaced prongs formed as a part of the body which extend away from the body in a common direction. The fastener recess is sized and shaped to fit within an opening of a rigid mesh wall panel placed in registry with at least one structural frame member of a building. A threaded fastener is passed through the fastener opening and driven into the frame member to seat a bottom portion of the recess and a driving head of the fastener against the frame member.

Abstract: Generally large, typically eight feet by two inches by ten or sixteen or twenty-four inches, sidewalls for modular concrete forms are easily, efficiently and economically produced by cutting and by routing sheet-type polymeric material, preferably polyurethane or expanded polystyrene foam. Metal connecting members are produced in standard sizes by cutting and bending sheet steel and/or wire. The sidewalls and connecting members are transported to a building site tightly and compactly in pieces, and then flexibly assembled into precision wall forms at the site with good efficiency at any scale. The wall forms so assembled define a cavity into which reinforcing steel rod, electrical and/or communications conduit, plumbing, etc., may be entered. Concrete is poured into the cavity to create a wall having the form sidewalls as its permanent surfaces.

Abstract: An insulation confining shield and application method, the shield mountable between elongated structural framing members in an unfinished wall or ceiling for insulation dispensed as curable liquid having a blowing agent or an insulation material with a curable adhesive, comprising: a sheet of elongated semi-rigid or rigid material having a center web section and a pair of opposed flanges extending substantially perpendicular from the center web section defining an insulation confining volume, the web section and the flanges being constructed and arranged to fit between the structural framing members in the wall or ceiling to retain the insulation when cured after being applied against the web section and the flanges, in one embodiment, the flanges having a plurality of vent apertures defined therethrough to enable a quantity of the insulation, when applied, to migrate from the insulation confining volume to an area outside of the confining volume and adhere to a portion of the structural framing members to mi

Abstract: A storage mantel for storing video and audio media. The storage mantel includes a mantel that is adapted for mounting over an open face of a fireplace. The mantel has a top side, a bottom side, and first and second lateral sides. The top and bottom sides and the first and second lateral sides define a front opening into the mantel. A door closes the front opening of the mantel. The mantel has spaced apart first and second divider walls extending between the top side and bottom side thereof and positioned between the first and second lateral sides. The first and second divider walls are substantially perpendicular to the bottom side of the mantel. A first storage compartment is defined between the first lateral side of the mantel and the first divider wall. A second storage compartment is defined between the first divider wall and the second divider wall. A third storage compartment is defined between the second divider wall and the second lateral side of the mantel.

Abstract: A self-sealing furring nail has a nail and a furring wad assembly. The furring wad assembly includes a plunger friction fit on the nail and a housing friction fit on a shaft of the plunger at one end of the housing, and at the other end of the housing there is a gap between the housing and the nail. The activating surface of the plunger is located within the housing, and the plunger's shaft extends from within the housing outside of the housing towards the nail head. The housing has a package of sealant material inside. The package has a sealant encased within a burstable bag. When the furring nail is driven through building paper into a frame of a building, the head of the nail contacts the plunger's shaft causing the plunger's activating surface to compress the bag of sealant. The bag bursts and the sealant passes through the gap between the nail and housing and seals the penetration hole between the nail and the building paper.

Abstract: An improved light weight wall structure for buildings is disclosed. It contains: (a) a skeletal frame having a plurality of posts for quick assembly; (b) a plurality of gusset sub-panels and base board sub-panels disposed in overlapping and alternate relationship fastened to the skeletal frame; (c) connection means provided in each junction between adjacent sub-panels for securely adjoining the sub-panels together; (d) a slurry retention device disposed on at least one major surface of a selected number of sub-panels; (e) a wall facing layer applied to the sub-panels in the form of a setable slurry, so as to increase the strength of the wall structure; and (f) a protection plate mounted on a portion of the wall structure that is most likely to be damaged.

Abstract: A versatile surround trim mounting device comprises an extruded metal surround trim piece formed as three separate legs and joined together to form a U-shaped frame structure. The extrusion comprises a pair of parallel trim edges that are separated from each other by a connecting recessed tile support therebetween. The recessed tile support is further provided with two side support structures. A spring bias force is placed against one of the side supports to urge a tile to lock it against the opposite side support so that the versatile surround trim appears to the eye be horizontal and vertical rows of decorative tiles surrounding a prefabricated fireplace.

Abstract: A fireplace shelf and mantel support system includes slotwall panels affixed to the structure wall above and to the side of the fireplace opening. The slotwall panels include T-shaped support slots. A mantel and shelves are provided and are supported on the slotwall panels with support brackets. The support brackets include a leg having an inturned upper portion extending into the slotwall support slots and an arm extending away therefrom for supporting the mantel or shelves. Edge trim is provided along the perimeter edge of the slotwall panels.

Abstract: A fire resistant wall or other building structure makes use of specially constructed panels secured to a metal stud framework. Each panel has a core constructed of gypsum, cement, perlite aggregate and powder, and a polyvinyl acetate catalyst. Glass fiber reinforcement is pressed into the core materials on both sides. After the panels are secured to the framework, a metal mesh lath is applied and covered with a cementious surface coating that can be smoothed and finished as desired.

Abstract: A collapsible mantel assembly for use with a fire place opening. A horizontally extending member includes a breast board and a mantel top. A first vertically extending support member and a second vertically extending support member are provided and are located relative first and second ends of the breast board by tongue and groove arrangements extending between the support members and the breast board. Recessed portions are formed in the support members and the breast board and are in alignment upon positioning of the support members and the breast board. A fastener assembly is applied within the recesses at each end of the breast board and secures the support members to the breast board.

Abstract: A wall form structure comprises modular components, wherein individual components are fitted together to construct residential or commercial wall structures. The wall form structure has prefabricated inner and outer walls, a connecting member which is positioned between the walls, and column members to hold the walls against the connecting member. The column member is equipped with perpendicular connectors which are inserted into openings of the prefabricated walls. The connectors are sufficiently longer than the thickness of the wall and engage onto the connecting member. The connecting member includes a mesh area to restrict the flow of concrete poured into cavities defined by two walls and a plurality of connecting members. Concrete may be poured into all or selective cavities depending on the use and purpose of the wall structure. The prefabricated wall may comprise a base wall, a mesh, a screen, a brace, an insulation, or any combination thereof.

Abstract: A built-up post for use in a building is disclosed. It includes: (a) an upper post resembling a long column, the upper post having a first end to be fixedly connected to a steel girder or a ceiling of a building, and a second end having a longitudinal hole, the longitudinal hole having an inner wall with an internal thread; (b) a lower post resembling a long column, one end to be fixedly connected to a steel girder or a floor of a building, the other end having a longitudinal hole, the inner wall of the longitudinal hole having an internal thread; and (c) an intermediate post resembling a long column, each end thereof having a long thread for screwing into the longitudinal holes of the upper and lower posts. The upper post, intermediate post and lower post are joined in alignment with each other, with the long threads of the intermediate post being screwed into the longitudinal holes of the upper and lower posts, respectively.

Abstract: A laminated construction board comprising a kraft board support backing adhesively bonded to a foam insulating panel is disclosed. Also shown is an improved method for attaching laminated construction boards with fasteners. The fasteners are driven through the foam panel, until the retaining portion thereof engages the support backing, securing it in abutting relationship with an underlying wall substructure. The insulated surface of the board may be covered with various surface finishes, and is especially suited for use with acrylic mortar systems.Also disclosed is a building structure, a method of constructing a building structure, a wall surfacing system, and a method of constructing a wall sheathing, all utilizing construction boards attached to a substructure with staples wherein the crown of the staple engages the support backing of the construction board.

Abstract: A drywall support device for the temporary support of drywall, such as for ceiling installation, during installation. This device is a small and compact device having a piercing end, a supporting tongue, and a striking end. The piercing end and the striking end are opposite one another and essentially in the same plane which is transverse to the plane in which the supporting tongue lies. The drywall support device has the piercing end merely driven substantially perpendicular into a ceiling joist by striking the striking end with a hammer. The tongue supports one end of the drywall sheet while the installer secures the opposite end working towards the support devices. Once the entire sheet is secured, the drywall support devices are removed and reused in the installation of the next sheet. The drywall support device is also useful for installing drywall sheets on walls with ceilings above standard height, such as in old homes where ceiling may be over eight feet or in homes with cathedral ceilings.

Abstract: A new concept wall system is provided, wherein a moisture and vapor barrier is positioned in an enterior insulation finish system to provide thermal stability regardless of climatic variations. Specifically, a two part membrane of multiple cross-laminated layers of polyethylene film fully bonded to a layer of rubberized asphalt is placed between the substrate and insulation layers of the exterior insulation finish system.

Abstract: A composite roof structure, and a corresponding method of fabricating the structure, are disclosed which includes use of a layer of adhesive material (preferably a foamed, cellular adhesive such as polyurethane) along with a flexible membrane including a rubber-like sheet having a fleece-like matting secured to the underside thereof. The adhesive is preferably sprayed onto a roof substrate and prior to complete solidification thereof the membrane is pressed into the adhesive so that the matting becomes embedded therein.

Abstract: A hollow wall having a V-shaped rigid wire clip with two almost parallel legs engaged in holes in a metal element on a wallboard back face, with the clip head extending across the wallboard edge joint, to hold abutting wallboard edges coplanar, in which at least one of the clip legs has an intermediate bend engaging the hole periphery, whereby a thin tool, extended through the joint, can rotate the clip head around the intermediate bend, which is engaged with the hole periphery, which removes the clip head from behind one of the two abutting edges, for nondestructive removal of one of the wallboards of the wall.

Abstract: A reinforced composite sheathing paper for use in wall construction between interior framing and exterior materials such as stucco in which a backing sheet of asphalt saturated kraft paper is provided on the interior surface with a plurality of reinforcing bands extending for the length of the paper in spaced parallel relation, each band including a plurality of fiberglass yarns, a thermoplastic adhesive coating each of said yarns and bonding each yarn to said interior side surface whereby each of said bands reinforces said kraft paper and minimizes deflection of said paper during application of stucco to the exterior surface of the sheathing paper. A method of preparing a wall frame construction for application of exterior stucco material including the step of wrapping in one operation the wall frame construction with a longitudinally reinforced backing sheet including reinforcing bands and securing the backing sheet to the studs of the wall frame construction.

Abstract: A building wall covering system for application to a wall support comprises a layer of insulative material and an overlying layer of matting which is attached to the wall support structure. The matting is particularly adapted to provide structural strength in the cementitious material applied thereto. The matting is of a bulkly layer of open construction formed by randomly directed interconnected flexible filaments. The cement layer is applied to fill the voids in the matting and cover same. A finish coat is applied to the layer of hardened cement material to complete the covering. The system has considerably enhanced impact resistance compared to existing systems.

Abstract: Disclosed is a wallboard panel construction including first and second abutting wallboard panels secured to generic framing members by a series of distortable clip pairs, each of the clips having substantially flat, coplanar plate and tongue portions, extending at substantially right angles and in opposite directions from central web portions, the web portions extending within the wallboard panel joints terminate with wallboard impaling pointed portions extending in the direction of and substantially parallel to the plate portions, the tongue portions are severed or slotted to form a fastener attachment terminal end portion, hinged from the plate portion by leaf spring edge portions, the first wallboard panel having a first series of clips, initially having coplanar plate and tongue portions with the terminal fastener ends mechanically secured (screwed or nailed) to a framing subsurface, the second wallboard panel having a second series of identical clips with tongue portions urged between the first wallboard

Abstract: A rigid wooden composite assembly such as a beam, post or the like, includes a plurality of elongated wooden boards of varying lengths disposed in face-to-face relationship and forming a plurality of layers. At least one of the layers includes a plurality of boards, the inner ends of which abut to form a joint therebetween. A connector device has a base plate with openings therein. Prongs extend outwardly from the plate and initially generally normal thereto. The prongs of adjacent openings extend in opposite directions from the plate. The connector device is disposed between the layers so that the base plate bridges the inner portion of the joint and the oppositely extending prongs penetrate the opposing board faces. When the assembly is compressed together, the prongs deform and clinchingly engage the wood surrounding the joint. The abutting boards are spliced together, and the facing boards are held tightly together.

Abstract: A panel fastener for attaching a wall panel to a flange of a vertical stud in a movable wall system. The panel fastener is fabricated from sheet metal and includes a flat body portion, pointed teeth for driving into an edge of the wall panel and a portion which engages the rear surface of the flange. The panel fastener is deformable, thus permitting the wall panel to be installed by movement toward the stud along a path perpendicular to the panel. In addition, the panel fastener is fractured during wall panel removal, thus permitting the wall panel to be removed from the stud without damage to the stud or the wall panel.

Abstract: A first wallboard and a second wallboard in edge-to-edge abutment are secured to an underlying stud by a double acting fastener which bends around the stud from a flange to the web where a screw passing through a bight in the fastener holds it in place. Oppositely oriented wire talons 20 and 25 are extensions of a first arm 17 and a second arm 18, respectively. Talon 20 is impaled in the edge of the first wallboard and talon 25 is impaled in the edge of the second wallboard. A loop 23 in the second arm 18 rests behind the first wallboard and both arms rest behind the second wallboard. A force tending to move either wallboard away from the stud is resisted by both arms.

Abstract: A progressive demountable partition in which gypsum wallboard is affixed against I-shaped vertical studs by a plurality of small sheet metal clips having short tangs projecting into the wallboard back face and having a flange-engaging forwardly extending portion engaged behind the vertical stud flanges.

Abstract: An improved panel or wallboard fastener for securing a panel to a framing member. The wallboard fastener comprises a substantially planar base having a single impaling flange secured to it at a midpoint. The impaling flange includes a first leg which extends substantially perpendicularly outwardly from the base and a second leg secured to the first leg and which lies in a plane substantially parallel to but spaced from the base. The second leg of the impaling flange forms a point which is insertable into an edge of the panel, typically a sheet of wallboard.

Abstract: An integrated roof system for buildings of the type wherein the roof structure is supported on spaced apart rafters, the system comprising a series of V-trusses extending between the rafters at spaced apart intervals, the V-trusses comprising independent load supporting units which are self-bracing and do not require interconnecting bracing members. The V-trusses are formed from half-truss sections having top and bottom chords interconnected by webbing, the half-truss sections being diagonally disposed with respect to each other with their bottom chords juxtaposed and their top chords interconnected by tie members. The system includes seat members at the ends of the top chords by means of which the V-trusses are secured to the rafters, and a roof structure adapted to be secured to the top chords of the V-trusses.