JP4436237B2 - Insulation structure of the ridge part of the ridge roof - Google Patents

Description

  The present invention relates to a heat insulating structure of a ridge part in a ridge roof.

  FIG. 7 is a schematic view showing the framework of the roof of the close-up ridge. A pair of climbing beams 1 are arranged on both ends of the horizontal purlin 10 in accordance with the roof inclination, and the upper end of each climbing beam 1 is connected to the purlin 10. It is. The rafters 2 (the rafters connected to the purlins 10 are indicated by the symbol “2a”) are arranged in the girder direction on both sides of the purlins 10 according to the roof inclination, and the upper ends of the rafters 2a are the purlins 10 Is connected to. The rafter 2 is arranged on one side of the climbing beam 1 in parallel with the rafter 2a connected to the purlin 10 and the rafter is oriented on the other side of the climbing beam 1 in a direction perpendicular to the rafter 2a connected to the purlin 10. 2 is arranged in accordance with the roof inclination (the rafter connected to the climbing beam 1 is indicated by the symbol “2b”), and the upper end of each rafter 2b is connected to the climbing beam 1. Then, by placing a field board on the rafter 2 and spreading a roof tile on it, a roof can be constructed.

  As shown in FIG. 8, for example, as shown in FIG. 8, the heat insulating structure of the roof is formed by attaching the heat insulating sheet 4 between the rafters 2 on the back side of the field board 3 in the approaching roof formed as described above (Patent Document). 1).

Further, when the ventilation building 12 is formed on the purlin 10 (see FIG. 4), the heat insulating sheet 4 is attached so that a gap is formed between the base plate 3 as shown in FIG. The ventilation layer 13 is formed between the adjacent rafters 2 by the gap between the heat insulating sheet 4 and the base plate 3. When the air in the ventilation layer 13 located behind the base plate 3 is heated by solar heat, the heated air rises along the ventilation layer 13 and reaches the part of the purlin 10, It is discharged from the ventilation building 12 provided in the outside. Thus, by forming the ventilation layer 13 between the field board 3 and the heat insulating sheet 4, the air heated by solar heat can be smoothly discharged from the ventilation building 12 without staying in the attic. (For example, see Patent Documents 2 and 3).
Japanese Patent Laid-Open No. 10-280577 Japanese Patent Laid-Open No. 5-1448 Japanese Patent Laid-Open No. 53-32920

  As described above, the heat insulating sheet 4 is attached between the rafters 2 to form the heat insulating structure of the roof. However, the heat insulating sheet 4 is attached to the climbing beam 1 in the approaching part of the approaching roof. As a result, there was a problem with the heat insulation in the ridge part.

  Further, in the portion of the rafter 2a connected to the purlin 10, the air in the ventilation layer 13 between the heat insulating sheet 4 and the field board 3 rises along the rafter 2a and reaches the portion of the purlin 10 as described above. The air is exhausted from the ventilation tower 12 provided above, but the air in the ventilation layer 13 formed between the rafters 2b rises and climbs at the portion of the rafter 2b connected to the climbing beam 1 in the close-up ridge part. There is a problem that the heated air in the ventilation layer 13 between the rafters 2b cannot be efficiently discharged from the ventilation building 12 only to the beam 1 part.

  The present invention has been made in view of the above points, can ensure heat insulation in the part of the ridge part, and has formed a ventilation layer between the rafters connected to the climbing beam of the ridge part. In this case, an object of the present invention is to provide a heat insulating structure for the approaching ridge portion of the approaching roof that enables the air in the ventilation layer to be efficiently discharged from the ventilation wing.

  The heat insulation structure of the close-up part of the close-up roof according to claim 1 of the present invention is formed by placing rafters 2 on both sides of the climbing beam 1 and attaching a base plate 3 on the rafters 2. The heat insulation sheet 4 is arranged so as to cover the lower side of the climbing beam 1 with a gap in the close-up part of the building roof, and the heat insulation sheet 4 is attached along the longitudinal direction of the climbing beam 1. To do.

  Thus, the heat insulating sheet 4 covering the lower side of the climbing beam 1 can ensure the heat insulating property in the portion of the ridge portion. In addition, a ventilation layer 14 that reaches the purlin 10 along the climbing beam 1 can be formed on the upper side of the heat insulating sheet 4 that is disposed below the climbing beam 1 with an interval. The rising air can be guided to the ventilation ridge above the purlin 2 through the ventilation layer 14.

The invention of claim 1 is characterized in that a ventilation sheet 5 is provided on both sides of the heat insulation sheet 4 and the heat insulation sheet 4 is attached by fixing the ventilation sheet 5 to the rafter 2. It is.

  Moisture released from the climbing beam 1 and the field plate 3 passes through the ventilation sheets 5 on both sides of the heat insulating sheet 4, and moisture stays on the upper side of the heat insulating sheet 4, so that the climbing beam 1 and the field plate 3 are moist. Can prevent rotting.

  According to the present invention, the heat insulating sheet 4 can ensure heat insulation in the part of the ridge part, and the ventilation layer 13 is formed between the rafters 2 connected to the climbing beam 1 of the ridge part. In this case, the air in the ventilation layer 13 between the rafters 2 can be guided to the ventilation building 12 and efficiently discharged by the ventilation layer 14 formed along the climbing beam 1 by the heat insulating sheet 4.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The close-up roof is formed with the framework as shown in FIG. FIG. 2 is a cross-sectional view taken along the line II of FIG. 7 showing a portion of the purlin 10 at the top of the roof. Arranged in parallel, the upper ends of the rafters 2a are fixedly connected to the purlin 10. FIG. 1 is a cross-sectional view of the rolling ridge line of FIG. 7 showing a portion of the climbing ridge portion, and the other side of the climbing beam 1 is parallel to the rafter 2a connected to the purlin 10 on one side of the climbing beam 1. The rafters 2 (2 b) are arranged in a direction perpendicular to the rafters 2 a connected to the purlin 10 on the side of the roof, and the upper ends of the rafters 2 b are fixed to the side surfaces of the climbing beams 1. Connected. Then, a field board 3 is stretched on the rafters 2, a waterproof sheet 16 such as asphalt roofing is laid on the rafter 2, and a roof tile 11 such as a slate tile is further spread thereon (see FIGS. 3 and 4). ), Which can form a ridge roof.

  FIG. 4 shows an example of the ventilation tower 12 provided on the purlin 10 at the top of the roof. A ventilation opening 18 is formed in the upper part of the purlin 10 by cutting out the base plate 3 and the roof tile 11 and the like, and the ventilation opening 12 covers the ventilation opening 18 from above and straddles the building. Is attached. The air in the attic is discharged to the outside from the ventilation building 12 after passing through the ventilation opening 18, and rainwater is prevented from entering the attic from the ventilation opening 18. It is like that.

  Moreover, the heat insulation structure of a roof is formed by attaching the heat insulation sheet 4 between the adjacent rafters 2 on the back surface side of the field board 3. As shown in FIG. 5, the heat insulating sheet 4 has a heat-radiating material 21 made of heat-reflective aluminum foil or the like on both surfaces of a heat insulating material 20 made of a plastic sheet commonly called an air mat having a large number of air-filled cells. What was formed by laminating | stacking by adhesion | attachment etc. can be used. The heat insulating sheet 4 is formed in an elongated rectangular shape, and the width dimension thereof is formed to be approximately the same as the interval dimension between the adjacent rafters 2. A ventilation sheet 5 is attached to both end portions in the width direction of the heat insulating sheet 4 by bonding, sewing or the like over the entire length. The ventilation sheet 5 can be formed of a nonwoven fabric such as a moisture permeable waterproof sheet or a ventilation waterproof sheet that allows air and water vapor (humidity) to pass through but does not allow water to pass through. “Tyvek 1060B” (trade name) and “Joets LX” (trade name) manufactured by Ube Airtight Housing Co., Ltd. can be used. In the embodiment shown in FIG. 5, a plurality of heat insulating sheets 4 are connected by the ventilation sheet 5.

And the heat insulating sheet 4 is arrange | positioned between each adjacent rafter 2, and the ventilation board 5 of the both sides of the heat insulating sheet 4 is fixed to the rafter 2 using fixing tools, such as a Tucker needle, and a field board is shown in FIG. The heat insulation sheet 4 can be attached to the back surface side of 3. Here, in the case where a plurality of heat insulating sheets 4 are connected by the ventilation sheet 5, the heat insulating sheet 4 is attached in a state where the ventilation sheet 5 is hooked on the rafter 2 before the field board 3 is stretched on the rafter 2. By disposing between the rafters 2, the heat insulating sheet 4 can be attached. The heat insulating sheet 4 is disposed in the vicinity of the middle of the rafter 2 in the height direction so as to provide a gap between the lower surface of the field board 3, and the gap between the heat insulating sheet 4 and the field board 3 is used as a ventilation layer. 13 is formed.

  In addition, a heat insulating sheet 4 is disposed and attached to the lower side of the climbing beam 1 in the ridge portion over almost the entire length of the climbing beam 1. The heat insulating sheet 4 is arranged so as to cover the climbing beam 1 from the lower side with a gap provided between the lower surface of the climbing beam 1 and the ventilation sheets 5 on both sides of the heat insulating sheet 4 are rafters. The heat insulating sheet 5 is attached by fixing to the lower surface of 2 (2b) with a fixing tool such as a tucker. A ventilation layer 14 is formed along the climbing beam 1 by a gap between the climbing beam 1 on the upper side of the thermal insulation sheet 4 (which is also a gap between the thermal insulation sheet 4 and the base plate 3). The upper end of the ventilation layer 14 is open at the connecting portion of the climbing beam 1 to the purlin 10.

  Here, the heat insulating sheet 4 provided between the rafters 2 (the heat insulating sheet between the rafters 2 is indicated by the symbol “4a”) is attached in a range covering almost the entire length from the upper end to the lower end of the rafter 2. The upper end of the heat insulating sheet 4a provided between the rafters 2a connected to the purlin 10 is arranged at a position slightly away from the purlin 10 and the ventilation opening 18 as shown in FIG. The upper end of the heat insulating sheet 4a provided between the rafters 2b connected to the base is arranged at a position slightly away from the climbing beam 1 as shown in FIG. FIG. 3 is a cross-sectional view of the eaves of the roof, and is a cross-sectional view of the haha line of FIG. 7, in which 23 is a girder, 24 is a ceiling, 25 is an outer wall, It is mounted on the girder 23. A nose cover 26 is attached to the distal end surface of the lower end of the rafter 2, and an eaves ceiling 28 provided with a vent 27 between the nose cover 26 and the outer wall 25 is attached. The lower end of the heat insulating sheet 4 a is arranged at a position slightly away from the nose cover 26 at the lower end of the rafter 2.

  Further, as shown in FIG. 1, the upper end portion of the heat insulating sheet 4 a provided between the rafters 2 b connected to the climbing beam 1 is the heat insulating sheet 4 attached to the lower side of the climbing beam 1 (the heat insulating sheet below the climbing beam 1). Is indicated by the symbol “4b”). Therefore, the ventilation layer 13 formed on the upper side of the heat insulating sheet 4a between the rafters 2b is communicated with the ventilation layer 14 formed on the upper side of the heat insulating sheet 4b at the upper end opening.

  In the above building roof, the heat insulating structure of the roof is formed by the heat insulating sheet 4a provided between the rafters 2, and the heat insulating sheet 4b covering the lower side of the climbing beam 1 further provides the heat insulating structure of the tower building. It can form and can ensure the heat insulation in the part of a ridge part. That is, the radiant heat radiated from the field board 3 side to the ceiling 24 side can be blocked by the heat radiation material 21 on the upper side of the heat insulating sheet 4 and radiated from the ceiling 24 side to the field board 3 side. Radiant heat can be shielded by the heat-dissipating material 21 below the heat-insulating sheet 4, and the heat-insulating material 20 of the heat-insulating sheet 4 can insulate the base plate 3 side from the ceiling 24 side. It is. Further, the air-permeable layers 13 and 14 formed on the upper side of the heat insulating sheet 4 can also insulate the base plate 3 side and the ceiling 24 side.

  Moreover, when the air in the ventilation layer 13 located on the back side of the field board 3 is heated by solar heat, the heated air rises along the ventilation layer 13. At this time, the air in the ventilation layer 13 formed between the rafters 2a connected to the purlin 10 rises in the ventilation layer 13 and reaches the portion of the purlin 10 as shown by the arrows in FIG. It is discharged from the ventilation building 12 through the opening 18 to the outside. Further, the air in the ventilation layer 13 formed between the rafters 2b connected to the climbing beam 1 rises in the ventilation layer 13 as shown by the arrows in FIG. Then, along the climbing beam 1, it rises in the ventilation layer 14, reaches the part of the purlin 10, and is discharged from the ventilation building 12 through the ventilation opening 18. As the heated air is discharged from the ventilation layer 13 in this way, the cold air under the eaves opens from the ventilation hole 27 of the eaves ceiling 28 through the attic to the ventilation layer 13 as shown by the arrow in FIG. It can be cooled so that heat does not accumulate on the back side of the base plate 3.

  In addition, the field board 3, the climbing beam 1, and the rafter 2 formed of wood absorb and release moisture such that moisture is released during the day and moisture is absorbed at night. And the heat insulation sheet 4 which covers the lower side of the field board 3 and the climbing beam 1 is attached by fixing the ventilation sheet 5 of the side edge part to the rafter 2 as mentioned above. Accordingly, moisture can flow between the ventilation layers 13 and 14 on the upper side of the heat insulating sheet 4 and the lower side of the heat insulating sheet 4 through the ventilation sheet 5 (see arrows in FIG. 6). The heat insulating sheet 4 prevents the base plate 3, the climbing beam 1, and the rafter 2 from sucking and releasing moisture, and the moisture stays in the ventilation layers 13 and 14, and the base plate 3, The climbing beam 1 and the rafter 2 can be prevented from rotting.

FIG. 8 shows an example of an embodiment of the present invention, and is a cross-sectional view of a roll line portion of FIG. 7. FIG. 8 is a cross-sectional view taken along the line II in FIG. 7, showing an example of the above embodiment. It shows an example of embodiment same as the above and is a cross-sectional view of the ha-ha line portion of FIG. It is sectional drawing of the part of the ventilation building which shows an example of embodiment same as the above. It is sectional drawing of a heat insulation sheet same as the above. It is sectional drawing which shows the attachment state of the heat insulation sheet between rafters same as the above. It is a top view which shows the base | substrate structure of the same building roof same as the above. It is the partially broken perspective view which shows a prior art example.

Explanation of symbols

1 climbing beam 2 rafter 3 field plate 4 heat insulation sheet 5 ventilation sheet

Claims (1)

Install and install a rafter on both sides of the climbing beam and cover the lower side of the climbing beam with a gap in the ridged part of the ridged roof that is formed by placing a ground plate on the rafter. Insulation structure of the ridge part of the ridge roof, which is arranged and fixed to the rafters by fixing the ventilation sheets provided on both sides of the insulation sheet along the longitudinal direction of the climbing beam .

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