RU95703U1 - FLAT ROOF PC 4 - Google Patents

Abstract

 Roof covering, comprising a vapor barrier layer sequentially laid on the base, a heat insulation layer, a layer of flat pressed asbestos-cement sheet located between the thermal insulation layer and the roof carpet, characterized in that it further comprises a frame made of metal profiles with a telescopic mounting system, all of which constituent fasteners have the possibility of mutual movement, flat pressed asbestos-cement sheets with a thickness of at least 10 mm are mounted on bearing rails profiles of the frame through a shock-absorbing pad made of frost-resistant material.

Description

The utility model relates to the field of construction, namely to the roofs of buildings; it can find application in new construction, during repair and reconstruction of roofs.

A known design of a roof covering, consisting of profiled steel flooring, vapor barrier, insulation and roll roofing (Garmash A.I. Roofs and roofs of buildings and structures. - Kiev, Budivelnik, 1988, p. 79-80).

The disadvantage of this design is that its layers are glued in an adhesive manner and when exposed to vibration, in particular from ventilation equipment, deformation and destruction of adhesive joints occur.

In this case, the necessary protection against lifting force under wind load is not provided, which reduces the overhaul time and reduces the durability of the coating.

A known fastening system for mechanically fixing the protective and sealing material on a flat roof (see Appendix No. 1 to the application, DE 20106568 U1, IPC 7 Е04В 1/74, Е04D 3/36, "Befestigungssystem zur Fixierung von Damm - und Dichtungsmaterialien auf Flachdachern" ), which consists of a tubular element 11 with a flange 13 and a conical end, as well as a fixing sleeve 1, a coupler 23 and an anchor element 16. The fixing element 11 is installed in the upper part of the roof, while its flange 13 rests on the surface 33 of the protective coating, it perceives the loads of the mounting system and distributes them on the surface 33. From above, a fixing sleeve 1 is inserted into the tubular element 11, a flange 2 of which is placed on top of the flange 13 of the tubular element 11. In the fixing sleeve 1, a long coupler 23 is fastened at one end passing inside the tubular element 11 and secured with its other end in the anchor element 16 installed at the base of the 28th roof.

The known device is not adjustable in height and can be used to fix only rigid heat-insulating roofing materials having a fixed thickness. At the same time, the indicated elements of the fastening system — the tubular element, the fixing sleeve, the screed and the anchor element — do not have the possibility of mutual movement, and cannot be used for roofing of various thicknesses.

The presence of an anchor element in this fixing system implies its use only for concrete roof bases.

As a prototype, a roof covering (RF patent No. 14595, IPC 7 E04D 5/00 op.) Containing a vapor barrier layer, a thermal insulation layer made of polyurethane foam based on polyurethane foam, a roofing carpet, further comprising a layer made from a flat asbestos-cement sheet, made with gating through holes and located between the thermal insulation layer and the roofing carpet.

The disadvantage of this coating is that it has an increased fire hazard (the combustibility group of the foam based on polyurethane foam G4, G3, G2) and is limited by the level of maintainability.

The inventive utility model is aimed at solving the problem of creating a unique system for the construction of a low-gradient roof with an air gap.

The technical result of this utility model is to ensure the regulation of the shape of the roof surface regardless of the configuration of the floors of the building and to conduct non-damaging repair of the roof due to the developed unique frame-type system with a telescopic effect for the construction of a low-gradient roof with an air gap.

The technical result of this utility model also consists in improving the air permeability of the subroofing structure and keeping the insulation dry; reduction of fire hazard due to the use of non-combustible insulation, increasing the life of the roof.

The specified technical result is achieved by the fact that the roof covering contains a vapor barrier layer sequentially laid on the base, a thermal insulation layer, a layer of flat pressed asbestos-cement sheet located between the thermal insulation layer and the roof carpet, according to the utility model, it additionally contains a metal frame with a telescopic mounting system, in which all the composite fasteners have the possibility of mutual movement, while flat pressed asbestos-cement sheets, thick at least 10 mm, are mounted on the bearing guide profiles of the frame through a shock-absorbing pad made of frost-resistant material.

Thus, the fastener assembly, in which all the constituent fasteners - tubular, threaded and dowel - have the possibility of mutual movement, is transformed from a rigid system into a telescopic adjustable system, which becomes universal for applying various thicknesses of fixed coatings.

In addition, the implementation in the claimed technical solution of the dowel element in the form of a dowel plug completely immersed in the base of the coating allows us to simplify the design of the universal mounting unit, facilitate installation and dismantling of the coating on various substrates, and also allows the reuse of its elements.

The utility model is illustrated in the drawing, which shows the roof covering in cross section.

Designation of positions: 1 - reinforced concrete slab; 2 - leveling screed; 3 - vapor barrier; 4 - thermal insulation layer; 5 - windproof film; 6 - air gap; 7 - prefabricated screed from a flat pressed asbestos-cement sheet; 8 - shaped element FE 3; 9 - sealant; 10 - shock-absorbing pad; 11 - shaped element FE 1; 12 - rivet (screw) (according to the project); 13 - shaped element FE 2; 14 - screw (according to the project); 15 - rivet complete with a stainless steel sleeve and frost-resistant rubber; 16 - dowel for attaching the telescopic support (according to the project); 17 - telescopic support; 18 - dowel for fastening the insulation (according to the project); 19 - strip of rolled material with topping; 20 - roofing carpet.

The sequence of roofing:

- leveling screed device with a thickness of 10-15 mm;

- device supporting frame;

- vapor barrier device;

- the device of the lower thermal insulation layer;

- dot or strip gluing of mineral wool slabs with hot bitumen;

- the device of the upper thermal insulation layer;

- device windproof vapor permeable layer;

- fixation of mineral wool insulation to the base;

- device supporting frame;

- the device of the supporting frame (fastening FE 2 to the telescopic support);

- device supporting frame;

- fastening of shaped elements;

- device supporting frame (shock absorbing pads);

- laying a prefabricated screed from a flat pressed asbestos-cement sheet in one layer;

- fixing the middle part and single edge of a flat pressed asbestos-cement sheet;

- priming the joints of the composite screed before sealing;

- device for fastening prefabricated screed;

- applying a cold primer to the sheets of prefabricated screed;

- manufacture of a strip material with a width of 150 mm from rolled material;

- spot gluing a strip of web material sprinkled to the base at the seams of the composite screed;

- the device of the lower layer of the roofing carpet;

- the device of the upper layer of the roofing carpet.

Execution example.

1. The base device for the prefabricated screed from a flat pressed asbestos-cement sheet

When installing a PK 4 roof (installation of prefabricated screed sheets according to a metal frame system), the top of the insulation boards must be covered with a windproof vapor-permeable film (with the combustibility group NG). The fastening of the insulation to the reinforced concrete base of the slab should be performed at the rate of at least two dowels per 1 m ^{2 of} two-layer insulation.

2. The device of the prefabricated screed from a flat pressed asbestos-cement sheet.

When installing a PK 4 type roof, flat pressed asbestos-cement sheets are mounted on bearing guide metal profiles through a shock-absorbing pad made of frost-resistant material:

- with ordinary laying on a U-shaped shaped element FE 1;

- when adjacent to the parapet on the shaped element FE 1 using as an inclined side the shaped element FE 5, or on the shaped element FE 4 using as an inclined side a wooden antiseptic bar.

Bearing guide metal profiles (shaped element FE 1, FE 4) are mounted on a system of L-shaped profiles - shaped elements FE 2, which are installed on telescopic supports TO. In a roof like PK 4, the necessary surface slope is achieved by regulating the movable parts of the telescopic supports.

When installing a PK 4 type roof, flat pressed asbestos-cement sheets at the junction of adjacent sheets are pressed against the supporting metal profiles (FE 1, FE 4) with strips - shaped elements FE 3, FE 3.1, FE 3.2. The strips are fixed to the supporting metal guide profiles with rivets made of stainless or galvanized steel, or with steel self-drilling screws with a corrosion-resistant coating, or made of stainless steel.

The single edge, as well as the middle part of the sheet, is fastened to the supporting metal profiles (FE 1, FE 4) with a rivet made of stainless or galvanized steel complete with a stainless steel sleeve and a frost-resistant rubber sleeve. The hat at the rivet should be with a wide rim, or with a standard rim, but with a washer.

The load-bearing guiding metal profiles are fastened together (FE 1, FE 4, FE 2) with rivets made of stainless or galvanized steel, or with steel self-drilling screws with a corrosion-resistant coating, or made of stainless steel.

Fastening of the L-shaped profile - shaped element FE 2 to the telescopic support MOT is carried out with steel self-drilling screws with a corrosion-resistant coating, or made of stainless steel.

The telescopic support is mounted on a stud made of stainless or hot-dip galvanized steel.

In a monolithic reinforced concrete slab covering the stud, it is possible to mount with a plastic expansion bolt shield, or using a chemical injection composition.

In a multi-hollow reinforced concrete slab of the coating, the stud may be mounted using a chemical injection composition with the mandatory use of a mesh sleeve.

The use of modern technologies offered by LLC “Combine“ Volna ”allows to obtain significant advantages in the installation, repair or reconstruction of the roof. Among them:

- reduction in the mass of the structure;

- improving the air permeability of the subroofing structure and keeping the insulation dry;

- increase the life of the roof;

- the possibility of year-round repairs;

- savings on the use of the lower layer of insulation of lower density;

- increase the strength characteristics of the roof;

- repair and reconstruction of old roofs (re-equipment of hangar type premises in heated buildings);

- device of a new roof without dismantling the old one.

The inventive roof covering PK 4 is a unique frame-type system with a telescopic effect for the construction of a low-gradient roof with an air gap.

Claims (1)

Roof covering, comprising a vapor barrier layer sequentially laid on the base, a heat insulation layer, a layer of flat pressed asbestos-cement sheet located between the thermal insulation layer and the roof carpet, characterized in that it further comprises a frame made of metal profiles with a telescopic mounting system, all of which constituent fasteners have the possibility of mutual movement, flat pressed asbestos-cement sheets with a thickness of at least 10 mm are mounted on bearing rails profiles of the frame through a shock-absorbing pad made of frost-resistant material.