UA89704U - Insulation for flat roof - Google Patents

Abstract

Insulation for flat roof has two layers of insulation, which are made of plates of mineral wool. The upper layer consists of plates with higher density and lower of plates with lower density. The plates of lower layer are made ​​of lamellar bars.

Description

A useful model will prepare you for construction, in particular, for the arrangement of thermal insulation of flat roofs.

The main requirements for flat roofs are as follows: waterproofness, stability, rigidity, mechanical resistance, thermal insulation, as well as fire safety.

Waterproofing is ensured by a roofing carpet, for example, made of roofing material, foil or EPDM membrane. And other requirements are provided by insulation, which can consist of one or two layers of thermal insulation, depending on the urgent requirements and conditions.

Heat insulators for flat roofs are widely known.

This is a two-layer insulation made of Ruf Batto mineral wool plates. These are slabs of increased rigidity, made of mineral wool on the basis of basalt rocks and stacked on top of each other (Panasyuk M.V. "Roofing work. Practical guide", Rostov-on-Don, 2005, p. 43).

The basis for such insulation can be: concrete of any thickness, corrugated board, wood.

The density of the upper plate is 180 kg/m, the thickness is 40 mm; density of the lower plate - 110 kg/m", thickness - 5B0-170 mm, compressive strength - at 10 75 deformation - not less than 0.045 MPa, thermal conductivity - 0057 W/m Kk.

The installation of thermal insulation of a flat roof with Ruf Batto slabs allows you to maintain the necessary physical and mechanical parameters specified above. But such insulation is very expensive: the cost of 1 month is UAH 750. at a density of 110 kg/m 1 1,300 hryvnias. at a density of 180 kg/m.

The closest to the proposed solution is a two-layer insulation for a flat roof, made of mineral wool plates on a synthetic binder (DSTU B V.2.7- 167:2008, clause 4.5.2).

The density of the upper layer is not less than 180 kg/m", the thickness is 40 mm. The density of the lower layer is not less than 100 kg/m3, the thickness is 200-200 mm, the compressive strength is 0.04 MPa after 1095 deformations. thermal conductivity - 0.04 W/m-"K. The basis for such insulation can be any of the above. If you take a heater with a 200 mm-thick 125 bottom plate for the roof insulation, then the requirements of both building regulations and its physical and mechanical parameters will be met. At the same time, the heater is much cheaper than Roof Batts, the cost of 1 mi-857 hryvnias.

Zo But this cost also does not suit the builders. To reduce the cost of insulation, you can take plates with a density of less than 100 kg/m", but such an insulation will not meet the necessary physical and mechanical parameters, such as compressive strength, shear strength, etc.

The proposed useful model eliminates this drawback. the task of a useful model is, thanks to the application of a different construction of the lower layer, to ensure compliance with both the construction and physical and mechanical parameters of the flat roof insulation, while reducing the cost of flat roof insulation.

The problem is solved by the fact that in the insulation for a flat roof, which had two layers of thermal insulation, which are made of mineral wool plates, and the upper layer consists of plates of greater density, and the lower layer - of plates of lower density, according to a useful model, the plates of the lower layers are made of lamellar bars of the appropriate thickness.

It was the execution of the lower plate from lamellar bars that allowed to use for their manufacture plates with a lower density compared to the analogue, which significantly reduced the cost of thermal insulation of the flat roof as a whole.

A useful model is explained by the drawings, where it is shown: in fig. 1 - installation of a flat roof with insulation, cross section; in fig. 2 - production of lamellas from a half-wool board, in axonometry.

Insulator 1 for a flat roof has two layers of thermal insulation, namely the first upper layer 2, which is made of low-density fiberboard on a synthetic binder with a density of at least 150

KR/MU I with a thickness of 40 mm and the second lower layer Z, which is made of mineral wool lamella bars 4.

Lamellar bars 4 (see Fig. 2) are made of mineral wool board on a synthetic binder with a density of at least 75 kg/m? by cutting it along the long plane and turning it by 890 so that the fibers of the mineral wool layer are located perpendicular to the plane of the roof base. After that, lamellar bars 4 are tightly stacked to each other, creating the bottom layer 5 of thermal insulation. At the same time, such a layer has a compressive strength greater than 0.04 MPa, as well as a mineral wool plate of brand 125 (density from 100 to 125 kg/m), which has the same compressive strength (DSTU B B.2.7-167: 2008).

A flat roof, which has insulation, is arranged, as a rule, in this way.

The base 5 for thermal insulation can be: concrete of any thickness, corrugated board or wood. for Let's take for example the installation of a heater on a concrete base. After the concrete base is cleaned, a vapor barrier film 6, for example, Technonikol, with an overlap of approximately 10 cm, is laid on it freely, and the joints are glued with tapes. Next, lamellar bars 4, which are made as described above, are laid on top so as to obtain a plate C with the required dimensions.

The upper layer plate 2 is laid on top. Then the entire structure is fastened with the help of fastening elements 8 for ROKO flat roofs (roof plate dowel), which is used together with the anchor element. Next, it is covered with a roofing membrane 7, the joints of which are welded with hot air.

Such arrangement of the roof, thanks to the possibility of using Z plate with a lower density, namely 75 kg/m" instead of 100-125 kg/m", made it possible to reduce the cost: one such plate costs UAH 570. against UAH 657

If we take into account that the cost of the upper layer is no more than 20 95 of the entire insulation, then replacing the lower layer with a cheaper one will significantly reduce the cost of arranging the insulation of a flat roof in general.

Claims (1)

UTILITY MODEL FORMULA Insulation for a flat roof, having two layers of thermal insulation, which are made of mineral wool plates, the upper layer consists of plates with a higher density, and the lower layer - with plates of a lower density, which differs in that the plates of the lower layer are made of flame-retardant bars V shye A OB m Z he pe a Ne NSHNE EN VEDNNH PENJ ba i Ko 5. Fig. 1