JP2002285652A - Heat insulating apparatus in attic of wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective heat insulating apparatus on the side of roof materials, in which a ceiling as a hide material, such as a ridge beam, a tie beam, etc., is saved. SOLUTION: A heat insulating material 18 is housed in a space 8 formed by arranging a roof material 6 on the upper surface of a rafter 5 and a dampproofing material on the lower surface of the rafter 5. A vent 7 with which both ends along the longitudinal direction of the rafter communicate is provided on a proper place on the rafter 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an attic insulation device applied to insulate between indoors and outdoors via a roofing material of a wooden house.

[0002]

2. Description of the Related Art It is a matter of course that a vacant space called an underside of a ceiling is provided between a so-called ceiling and a roof material supported by a tree, and the vacant space (existence of an air layer) is used for the roof material. The inside and outside of the building are insulated.

[0003]

In the prior art, the heat insulation effect is achieved by utilizing the size of the space (vacant space) formed between the ceiling and the roofing material. The effect is reduced and therefore cannot be applied to wooden houses with omitted ceilings.

The present invention can be applied to a case where a ceiling (as a concealing material such as a purlin or a hut beam) is omitted, and provides a thermal insulation device for an attic in a wooden house having the same air permeability as the conventional example. It was created for the purpose.

[0005]

A roofing material is provided on the upper surface of a rafter and a heat insulating material such as a foam material is provided in a gap formed by applying a moisture-proof material on the lower surface. This is a configuration in which ventilation ports that communicate with each other on both sides along the longitudinal direction are provided.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an attic insulation device for a wooden house according to the present invention. FIG. 1 is a sectional view, FIG. 2 is a sectional view taken along line aa of FIG. 1, and FIG. FIG.

In the drawing, reference numeral 1 denotes a lower tree (foundation tree) erected between the purlins 2 and the girders 3, which are arranged at substantially equal intervals along the longitudinal direction of the purlins 2 and the girders 3.

In addition, between the purlins 2 and the girders 3, parallel with these, there are provided a suitable number of purlins for receiving the lower trees 1,... Similarly to the purlins 2, but they are omitted in the drawing. is there.

On each of the above-mentioned lower trees 1, each lower tree 1,
The bark 5 is placed and fixed via the moisture-proof material 4 stretched between the 1 while the roof material 6 is laid on the upper surface of the bark 5,
An air gap 8 composed of the roof material 6, the rafter 5 and the moisture-proof material 4 is juxtaposed along the longitudinal direction of the purlin 2 or the like.

The lower side of each space 8 in which the heat insulating material 18 is accommodated is
It communicates with the outside through an eaves ventilation vent not shown and a ventilation layer 10 (the lower part communicates with the outside world) provided inside the outer wall 9, but the upper side is located at a position corresponding to the ridge ventilation opening 11. Only certain existing gaps 8 are in direct communication with the outside. That is, the ridge ventilation opening 11 is not provided at a position corresponding to the upper end of each of the gaps 8,... Arranged along the ridge tree 2 on the structure or the design of the roof, and accordingly, a part of the gaps 8,. Has only its lower part in communication with the outdoors by the means.
For this reason, in the embodiment, a suitable number of ventilation holes 7 are provided along the longitudinal direction of the above-described barbs 5,... On both sides along the longitudinal direction of the barrel 5, that is, the gaps 8, 8 adjacent to each other. Each of the gaps 8,.
Communicate with each other, and communicate with the outdoors so that the ventilation operation can be naturally performed.

In the embodiment, the moisture-proof material 4 is made of plywood. However, any material that does not allow moisture to pass through may be used.
Wood fiber may be formed into a sheet using a binder.

The moisture-proof material 4 is provided by extending a decorative board (a plaster board of cloth in the embodiment) 13 on a ridge 12 provided on the lower surface of the lower tree 1.
One of the vacant chambers 14,... Constitutes a constituent material.
The presence of the cavities 14, that is, the above-mentioned gaps 8 filled with the heat insulating material 18 by utilizing the air layer of the cavities 14 constitutes a heat insulating device having a so-called double heat insulating function.

The heat insulating material 8 can be used as the moisture proof material 4 if its lightness can be utilized.
You can just put it on (stick it if necessary),
The rafter 5 may be supported in the space 8 by using a metal fitting.

The lower edge 1 is omitted, and the edge 12 is erected between the lower surface of the edge 5 and the lower edge of the edge 5 via the moisture proof material 4. The decorative edge 13 is arranged on the edge 12 as in the embodiment. May be. In this case, in the case of the embodiment, the outer wall heat insulating material 14 is arranged on the outdoor side of the girder 3, that is, on the outdoor side of the column for supporting the horizontal member such as the girder 3, and the lower part of the gap 8 is ventilated as described above. While being in communication with the outside through the layer 10, the outer wall heat insulating material 1 of the embodiment is provided directly under the beam 3, that is, inside the pillar.
A heat insulating portion corresponding to 4 is provided, and a ventilation layer instead of the ventilation layer 10 is provided adjacent to the outdoor side of the girders 3 and the columns, and the lower part of the gap communicates with the outside via the ventilation layer. Since this is another embodiment that is not directly related to the present invention, the details are omitted.

It is desirable that the heat insulating material 18 has excellent heat insulating effect and is lightweight, such as glass wool or foam material. In the embodiment, a foam material (made of plastic) is used.

The timber 5 of the embodiment is a lower material 5 having a rectangular cross section.
The upper member 5b having a rectangular cross section in which a and a number of cutouts are appropriately formed along the longitudinal direction is overlapped with each other so that the cutout is present on the lower material side, and the cutout portion is formed as a vent 7. The vent 7 is not provided with two members superimposed as in the embodiment, but a hole is formed in a so-called one or a cutout is formed on the upper surface or the lower surface. Although it may be formed, it is desirable to have a through-hole shape as in the embodiment in consideration of the load resistance, and it is more suitable for mass production to fasten the two members together as in the embodiment. The fastening means of the two members may be nailed. However, in view of nailing and cutting of the roof material 6 to the tree 5, the fastening means using plastic nails is preferable.

The roofing material 6 of the embodiment is constructed by sequentially laminating a field plywood 6a, a waterproof paper 6b and a main roofing material 6c on a rafter 5.

[0018]

Since the present invention has the configuration as described above,
It is possible to provide a device suitable as a heat insulating device for a roof side part in which a ceiling as a hidden material such as a purlin or a hut beam is omitted.

Further, since the both sides of the rafter are connected to each other by the ventilation holes provided in the rafter, the entire area of the lower surface of the roof material can be connected with a simple structure, and the ventilation operation is reliably performed to prevent dew condensation. Can be.

[Brief description of the drawings]

FIG. 1 is a sectional view.

FIG. 2 is a sectional view taken along line aa of FIG.

FIG. 3 is a perspective view of a rafter;

[Explanation of symbols]

 5 Barrel 6 Roofing material 7 Vent 18 Insulation material

Claims (1)

[Claims] 1. A roofing material is provided on an upper surface of a rafter, and a heat insulating material such as a foam material is provided in a gap formed by applying a moisture-proof material on a lower surface. An attic insulation device for a wooden house with ventilation holes on both sides communicating with each other.