JP5084687B2 - Wall insulation construction method - Google Patents

Description

  The present invention relates to a wall surface thermal insulation method for a building such as a house, and more particularly to a wall surface thermal insulation method that can be constructed in a short period of time without removing existing wall surfaces.

  In the case of a new building, as disclosed in Patent Document 1, a fiber-based heat insulating material is blown into the inner space of the heat insulating wall.

  On the other hand, there may be no heat insulating material in the space inside the wall of the existing building, or there may be insufficient heat insulating material with a thickness of about 50 mm even if it is included. Sometimes. Conventionally, in order to insulate an existing building, it is common to remove either the inner wall or the outer wall, and then install the heat insulating material and moisture proof material there, or install the heat insulating material with a moisture proof layer. It was the target. In addition, a net is stretched after the entire inner wall is removed, and a moisture-proof layer is applied after blowing insulative material.

JP 2006-342516 A

As mentioned above, the existing wall insulation renovation method is to remove all the planned heat insulation construction surfaces of the inner wall or outer wall of the outer wall of the building and reconstruct the wall material after the insulation work. The general construction method is to remove all of the walls of the planned construction surface and to reconstruct the wall material after the insulation work.
In such a conventional method,
・ Before heat insulation work, remove interior materials such as wallpaper and inner wall boards,
・ New wall material needs to be pasted after construction. Also,
・ In preparation for construction, it is also necessary to move furniture and luggage inside the room before construction.
About said (1), it is necessary to remove the heat insulation construction surface whole surface of a wall material for the heat insulation material filling construction, and it requires a great man-hour. Furthermore, the wider the wall to be removed, the greater the man-hours and costs. As for (2), since the entire surface of the heat insulating construction has been removed, after the heat insulating material construction, a new wall material must be stretched, and in the case of the inner wall, wallpaper must also be pasted. Furthermore, for (3), furniture and luggage must be evacuated so as not to hinder the work during construction. Moreover, when leaving some furniture etc., prior preparations, such as covering, are needed in order to avoid adhesion of dust etc. at the time of construction.

  The object of the present invention is that the construction is easy, the material cost can be reduced and the construction period can be shortened, and the movement of furniture and luggage can be minimized at the time of construction. It is providing the heat insulation construction method of the wall surface which can reduce a burden.

  The wall surface heat insulation construction method according to the present invention includes a first step of forming cutouts at the upper and lower parts of a building wall, and the upper cutout and the lower cutout are used to prevent the insulation material from scattering. The second step of closing with the third step, the third step of opening a hole in the net blocking the upper notch so that the tip of the heat insulating material blowing hose enters, and blowing the heat insulating material through the hole into the gap between the walls It consists of a fourth step and a fifth step of restoring the upper notch and the lower notch with a wall surface forming material.

  In addition, if necessary, either the air current stop construction or the moisture proof construction or both the air current stop construction and the moisture proof construction can be performed between the first step and the second step.

  According to the heat insulation construction method of the present invention, since only a part of the heat insulation construction surface is cut out, the construction period of the heat insulation material construction can be greatly shortened compared to the conventional construction method of removing the entire construction surface. . In addition, since the wall surface is also part of the wall surface, the time required for the recovery is short, and the amount of new material used can be reduced.

  Moreover, if the heat insulation construction method of this invention is employ | adopted, when constructing from the outer wall side, the effort like movement of indoor furniture etc. will become unnecessary at all. Moreover, even when repairing from the inner wall side, since only a part of the wall surface is cut out, it is not necessary to move all the furniture and luggage and can be kept to a minimum. Further, in the case of construction of the partition wall, it is not necessary to move all the furniture and luggage as in the case of the repair from the inner wall side.

  Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of a side wall to which the heat insulation construction method according to the present invention is applied, FIG. 2 (a) is a cross-sectional view of the side wall before construction, (b) is a diagram similar to FIG. 3 is a view of the side wall before construction from the indoor side, FIG. 4 is a cross-sectional view of a state where a moisture-proof sheet is inserted into the inner space, and FIG. 5 is a cross-sectional view of a state where a heat insulating material is inserted into the inner space. is there.

  The side wall 1 has a structure in which a gap 5 is provided between the outer wall 2 and the inner wall 3 and a decorative plate 4 is combined with the interior side of the inner wall 3. Here, the gap 5 formed by the outer wall 2 and the inner wall 3 is a cavity before the heat insulation construction of the present invention.

  In order to insulate the wall according to the present invention, first, as shown in FIGS. 2A and 3, notches 3 a and 3 b are formed in the upper and lower portions of the inner wall 3 of the building side wall 1. In this figure, the upper notch 3a of the inner wall 3 is notched at the inner wall in the vicinity of the trunk, and the lower notch 3b is notched at the height of 100 mm to 300 mm in the inner wall near the joist. The height of the notch is not particularly limited as long as it can be applied to the heat insulating material. Also, the width direction can be cut out to the full wall width as shown in FIG. 3, but can also be limited to a width as required.

  Further, as shown in FIG. 2B, the method of the present invention can also be applied to a case where the inside of the gap 5 is thermally insulated to some extent by a heat insulating material 8 having a thickness of about 50 mm.

  Next, airflow stops 6 and 7 are installed on the upper and lower portions of the gap 5. The construction of the airflow stops 6 and 7 can be omitted depending on the structure in the gap 5. The airflow stoppers 6 and 7 block the upper and lower portions of the gap 5 to form an airtight layer so as to prevent water vapor from entering and prevent airflow from passing therethrough.

  As an example of the air flow stop construction, prepare a thinly cut glass wool compressed in advance in the bag, push the bag into the gap 5 from the notches 3a, 3b, set in a predetermined place, and then Cut your mouth. Then, since the compressed glass wool tries to be restored, the airflow stoppers 6 and 7 can be formed by filling the gap 5.

  Moreover, the moisture-proof sheet 9 shown in FIG. For this purpose, the moisture-proof sheet 9 is hung from the upper cutout portion 3a into the gap 5, and the upper end and the lower end thereof are folded back at the upper cutout portion 3a and the lower cutout portion 3b, respectively. By pulling the tip of the moisture-proof sheet from the lower cutout portion 3b side, the sheet can be prevented from slackening. The width of the moisture-proof sheet is set to be the width of the pillar and the inter-column, or the width of the inter-column-inter-column, or is wider than those widths. A polyethylene film having a thickness of about 0.1 to 0.2 mm is suitable as the moisture-proof sheet. Further, a moisture-tight and airtight sheet “Zaburn” (trade name) is also suitable. In addition, it replaces with construction of a moisture-proof sheet | seat, and the wallpaper which has a moisture-proof function equivalent to or more than polyethylene 0.1mm thickness can also be constructed after the below-mentioned wall restoration.

  In addition, about the wall which does not touch outside air like a partition wall, construction of a moisture-proof sheet | seat can also be abbreviate | omitted.

  Moreover, there is no limitation in the order of construction of the airflow stoppers 6 and 7 and the moisture-proof sheet, and either may be first. Moreover, in order to give both functions of the airflow stopper and the moisture-proof sheet, a single-sided polyethylene or single-sided net bag may be inserted into the gap 5 and a heat insulating material may be blown into the bag.

  Next, as shown in FIG. 5, the net 10 is stretched over the upper notch 3a and the lower notch 3b, and the hole 10 into which the tip of the heat insulating material blowing hose 11 enters the net 10 covering the upper notch 3a. Open. The net 10 is for preventing the heat insulating material from scattering, and is not particularly limited as long as it has a mesh that allows air to escape but the heat insulating material such as glass wool does not escape.

  Next, the heat insulating material 12 is blown into the gap 5. In this way, by filling the gap 5 with the heat insulating material 12, the gap portion is eliminated, and thus the side wall 1 can be provided with the maximum heat insulating property.

  Here, it is preferable to use glass wool or cellulose fiber as the heat insulating material for blowing in terms of both ease of construction and heat insulating function. It is also preferable to use a mixture of glass wool and cellulose fiber. An adhesive may be attached to these heat insulating materials. After blowing the heat insulating material 12, the hose 11 is pulled out, and the end portion of the moisture-proof sheet 9 that has been folded back is firmly attached to the inner side of the inner wall 3.

  Next, the notches 3 a and 3 b are restored with the decorative plate 4. The restored part is caulked at the joints, especially if the wall to be restored is an inner wall, either reconstruct new wallpaper on the entire surface, or install surrounding edges or baseboards that can cover the restored part. It is also preferable to do.

  At the time of restoration, by using a material having high strength such as the above-described structural plywood, it can be used not only for restoration by closing but also for earthquake resistance reinforcement against earthquakes and the like.

  As described above, the heat insulation construction method from the inner wall side of the wall surface facing the outside air has been described based on FIG. 1, but this also applies to the heat insulation construction from the outer wall side and the partition wall heat insulation construction that is a wall that is blocked from the outside air. The heat insulation construction of the present invention can be performed by adjusting appropriately based on the above description.

Sectional drawing of the side wall which applied the heat insulation construction method concerning this invention (A) is sectional drawing of the side wall before construction, (b) is a figure similar to (a) which shows another Example. View of the side wall before construction from the indoor side Sectional view of the moisture-proof sheet inserted into the inner space Sectional view of the state in which the heat insulating material is inserted into the inner space

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Side wall, 2 ... Outer wall which comprises side wall, 3 ... Inner wall which comprises side wall, 3a ... Upper notch part, 3b ... Lower notch part, 4 ... Decorative plate, 5 ... Gap, 6, 7 ... Air flow stop, 8 ... heat insulating material, 9 ... moisture-proof sheet, 10 ... net, 11 ... hose for blowing heat insulating material, 12 ... heat insulating material.

Claims (4)

A first step of forming notches on the upper and lower parts of the building wall; a second step of closing the upper notches and the lower notches with a net for preventing scattering of heat insulating material; and the upper notches A third step of drilling a hole in the net, a fourth step of inserting a tip of a heat insulating material blowing hose through the hole and blowing the heat insulating material into a gap between the walls, the upper notch and the lower notch A heat insulation construction method for a wall surface comprising the fifth step of recovering the notch with a wall surface forming material. The heat insulation construction method for a wall surface according to claim 1, wherein an airflow stop construction is performed between the first step and the second step. The heat insulation construction method for a wall surface according to claim 1, wherein moisture-proof construction is performed between the first step and the second step. The heat insulation construction method for a wall surface according to claim 1, wherein airflow prevention and moisture prevention construction are performed between the first step and the second step.