JP2582184Y2 - Insulated roof - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof having heat insulating properties.

[0002]

2. Description of the Related Art Conventionally, when the back space of a house is narrow,
Insulation of the roof is performed when it is difficult to take ventilation from the back of the hut, such as in a ridge roof, or when the hut space is used as a living room without providing a ceiling. This prevents the temperature from rising in the back of the hut in the summer, and also helps to prevent sagamori on the roof in cold regions.

[0004] As this kind of insulated roof, a metal roofing material, a polystyrene resin foam (insulation layer) and an asphalt roofing (waterproof layer) are laminated in this order from the outside to the inside of the roof. From the outside to the inside, metal roofing material and cross-linked polyethylene resin foam (waterproof and heat-insulating material)
Are known in this order.

[0005]

However, in the above-mentioned conventional insulated roof, the metal roofing material exposed to direct sunlight in summer has a high temperature, and the polystyrene resin foam or the crosslinked polyethylene resin foam melts. In addition, heat deformation accompanied by shrinkage occurs, and as a result, a long-term heat insulating effect cannot be achieved, and the roofing material itself is deformed.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an insulated roof that can effectively maintain the insulation of the roof for a long period of time.

[0007]

In order to solve the above problems, the present inventors have made use of a polypropylene resin foam having good heat resistance in order to improve heat resistance as a heat insulating layer of a roof. Focusing on this, a heat insulating layer was formed by using this in combination with a polystyrene resin foam to form a heat insulating roof.

Specifically, asphalt roofing is laid on a base plate, a polystyrene-based foam plate is laid thereon, and then a polypropylene-based foam sheet is laid, and nailing is performed on the whole to form a base plate. After fixing, a metal roofing material was attached.

As a result, when the polystyrene-based resin foam and the polypropylene-based resin foam are used in combination, the above-mentioned problem such as thermal deformation is improved, but when a polypropylene-based foam sheet is laid on a polystyrene foam plate and nailed, When walking on the polypropylene foam sheet, the polypropylene foam sheet is displaced on the polystyrene foam board, and the hole around the nail that has already been punched becomes large. It has been found that there is a disadvantage that the waterproofness is reduced due to water leakage from a portion.

[0010] Therefore, if a polystyrene resin-based foam and a polypropylene resin-based foam are used in advance and fixed and integrated, there is no problem as described above, and the heat-insulating roof has good heat resistance and waterproofness. The present invention was completed when it discovered that it was obtained.

That is, the heat insulating roof of the present invention is a heat insulating roof in which a waterproof layer and a heat insulating layer are provided below a metal roofing material, wherein the heat insulating layer is formed by laminating a polypropylene resin foam and a polystyrene resin foam. It is characterized by being bonded and integrated.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. The drawings show an embodiment of the present invention, and FIG. 1 is a partial sectional view showing an example of the heat insulating roof of the present invention.

As shown in FIG. 1, the heat-insulating roof of the present invention has at least a waterproof layer 2 and a heat-insulating layer 3 under a metal roofing material 1, and the heat-insulating layer 3 is made of a polypropylene resin foam 4. And a polystyrene-based resin foam 5 previously laminated and bonded to form an integrated body. still,
In the figure, 6 is a field board, 7 is a rafter, 8 is a haze, and 9 is a nail for fixing the heat insulating layer 3.

The heat insulating layer 3 is formed by laminating and bonding a polystyrene resin foam 4 and a polypropylene resin foam 5 in advance, and has a size of width × height.
Preferably, it is formed to have a size of 0 cm × 60 cm to 90 cm × 200 cm.

As the polystyrene resin foam 5, those obtained by a conventionally known extrusion foaming method or an in-mold molding method of expanded beads are used. The thickness of the foam is usually 10
Those having a diameter of 100 mm and a density of usually about 0.1 to 0.02 g / cm ³ are used.

The polypropylene resin foam 4
A foamed sheet obtained by extrusion foaming is preferably used. The thickness of this foam sheet is usually 1 to 30 m
m, preferably ^{3 to} 20 mm, and the apparent density is usually 0.3 to 0.01 g / cm ³ , preferably 0.2 to 0.01 g / cm ³ .
It is 5 g / cm ³ . As the polypropylene resin which is the base resin of the foamed sheet, it is desirable to use a polypropylene resin having a long chain branch. An extruded foam sheet obtained using such a polypropylene-based resin,
The closed cell rate is high, and corrugates and surface irregularities are small. When this foam sheet is used, the heat from the metal roofing material can be reduced without deformation or melting, whereby the deformation of the polystyrene resin foam can be effectively prevented. Further, workability during construction and lamination and bonding is improved.

The lamination bonding of the propylene resin foam 4 and the polystyrene resin foam 5 is usually performed using an adhesive.

FIG. 2 is an external perspective view showing another example of the foam forming the heat insulating layer. The polypropylene-based resin foam 4 and the polystyrene-based resin foam 5 forming the heat-insulating layer 3 are not only laminated and adhered by laminating and bonding foams of the same size, but also as shown in FIG. 4
May be formed in a size larger than the polystyrene resin foam 5. That is, as shown in FIG. 2, when the polypropylene resin foam 4 is formed so that both side ends are slightly longer than the polystyrene resin foam 5 to form the protrusions 41 and 42, the protrusions 41 and 42 are formed. And 42, when the heat insulating layer 3 is formed by arranging a plurality of heat insulating materials, the adjacent protrusions are compressed to improve the adhesion between them, and the waterproofness, heat insulating properties, etc. are further improved.

Further, as shown in FIG. 3, the polypropylene resin foam 4 is
The protrusions 43 and 44 can be formed by being slightly shifted in both the vertical and horizontal directions, and then laminated. This embodiment is particularly excellent in waterproofness. In this embodiment, the protrusions 43, 4
4 each having a slightly longer length than the length of the non-laminated portions 45 and 46 also has more excellent waterproofness.

As the waterproof layer 3, asphalt roofing is generally used.

In the present invention, when the heat insulating layer 3 is provided immediately below the metal roofing material 1 as shown in FIG.
It is also possible to use one in which the heat insulating layer 3 integrated by bonding and laminating is bonded to the metal roofing material 1 in advance. Further, the waterproof layer 4 can be integrated with the heat insulating layer 3 in advance.

[0022]

[Effects of the Invention] As described above, the heat insulating roof of the present invention adopts a structure in which a heat insulating layer is formed by laminating and bonding a polystyrene resin foam and a polypropylene foam to form a conventional heat insulating layer. Compared to those using a polystyrene resin foam for the heat insulation layer and those using a crosslinked polyethylene resin foam for the heat insulation layer, the polypropylene resin foam has excellent heat resistance, The heat insulating material can be prevented from melting or deforming even when the temperature of the roofing material becomes high, and the roofing material itself can be prevented from being deformed, so that an insulated roof capable of effectively maintaining the heat insulation of the roof for a long time can be obtained.

Further, since the styrene resin foam and the polypropylene resin foam are not simply laminated but are integrally formed by bonding, the heat insulating layer is formed at the time of or after the heat insulating layer is formed. When walking on the upper side, since both are fixed, there is no reduction in waterproofness due to an increase in the size of the hole where the nail is hit.

[Brief description of the drawings]

FIG. 1 is a partial cutaway view showing one embodiment of the heat insulating roof of the present invention.

FIG. 2 is an external perspective view showing another example of a heat insulating layer.

FIG. 3 is an external perspective view showing another example of the heat insulating layer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal roofing material 2 Waterproof layer 3 Thermal insulation layer 4 Polystyrene resin foam 5 Polypropylene resin foam

Continuing on the front page (72) Inventor Kenji Doi 2-solen, Teinehoncho, Teine-ku, Sapporo City, Hokkaido Le Soleil Teine (58) Fields investigated (Int.Cl. ⁶ , DB name) E04D 3/35 E04D 12/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A heat insulating roof in which a waterproof layer and a heat insulating layer are provided below a metal roofing material, wherein the heat insulating layer is formed by laminating and bonding a polypropylene resin foam and a polystyrene resin foam. An insulated roof characterized by being a thing.