JP-7855829-B2 - Roofing materials for renovating existing roofs and construction structures using them

JP7855829B2JP 7855829 B2JP7855829 B2JP 7855829B2JP-7855829-B2

Inventors

藤澤一善
押田博之
染矢友英
小田純二
和泉正章
山田智弘
池本慎吾

Assignees

ＪＦＥ鋼板株式会社
ケイミュー株式会社

Dates

Publication Date: 20260511
Application Date: 20231222

Claims (9)

A roofing material for renovating an existing roof in which thin, sheet-shaped existing roofing materials are installed by overlapping them in a stepped manner in the direction of the eaves and ridge, The ridge-side insertion part, the decorative surface part, and the eaves-side folded-over part are formed integrally. The decorative surface portion has a bellows-fold shape comprising two or more repeating shapes formed from mountain folds and valley folds, which include two slopes: an eaves-side slope and a ridge-side slope. Two or more recesses formed by the valley folds in the bellows-fold shape, wherein two or more recesses aligned substantially perpendicular to the eaves-ridge direction are formed on the decorative surface as a water flow control means. The slope from the bend to the valley bend on the eaves side is uniform, and the slope from the valley bend to the bend on the ridge side is uniform. A roofing material for renovation, characterized in that the two slopes, the eaves-side slope and the ridge-side slope, are present across the entire decorative surface.
A roofing material for renovating an existing roof in which thin, sheet-shaped existing roofing materials are installed by overlapping them in a stepped manner in the direction of the eaves and ridge, The ridge-side insertion part, the decorative surface part, and the eaves-side folded-over part are formed integrally. Near the eaves-side end of the decorative surface, there is a single eaves-side upward slope that separates upward from the flat surface by a valley bend provided at the eaves-side end of the flat surface, extending from the ridge side to the eaves side. The aforementioned upward slope on the eaves side is provided with a bent section at the eaves side end, and one downward slope on the eaves side is provided from the bent section towards the eaves side. The eaves-side end of the aforementioned sloping eaves is connected to a vertical section that is bent approximately 90 degrees from the decorative surface towards the back side. The decorative surface portion has a recess formed by the valley bend portion, which is approximately perpendicular to the direction of the eaves and ridge. In the decorative surface, the recess is located near the eaves in the direction of the ridge, as a water flow control means. A roofing material for renovation, characterized in that no recess is formed on the ridge side of the aforementioned recess.
The roofing material for renovation according to claim 2 , characterized in that the eaves-side upward slope and the eaves-side downward slope are positioned substantially symmetrically with respect to the mountain-bend portion as a line of symmetry.
The roofing material for renovation according to claim 1 , characterized in that the angle of inclination of the eaves-side slope is less than the roof pitch of the existing roof.
A roofing material for renovation according to any one of claims 1 to 4 , characterized in that a water drain is formed on the surface side between the decorative surface and the eaves-side folded portion.
The roofing material for renovation according to any one of claims 1 to 5 , characterized in that the edge of the eaves-side folded portion is hemmed to the back side or the front side.
The roofing material for renovation according to any one of claims 1 to 6 , characterized in that both ends of the vertical direction in the eaves-ridge direction are hemmed toward the back side.
The roofing material for renovation according to claim 1 , characterized in that the edge of the ridge-side insertion portion is hemmed to the back side or the front side.
A construction structure for roofing materials for renovating an existing roof, in which thin, existing roofing materials are installed by overlapping them in a stepped manner in the direction of the eaves and ridge, The aforementioned roofing material for renovation has a ridge-side insertion portion, a decorative surface portion, and an eaves-side folded portion formed integrally. The decorative surface portion is formed with a water flow control means provided for the roof repair material according to any one of claims 1 to 8 . The edge of the folded-over portion on the eaves side is hemmed. A construction structure for roof repair materials, characterized in that, during construction, the edge of the ridge-side insertion portion is positioned closer to the ridge than the edge of the eaves-side folded portion.

Description

This invention relates to a roofing material for renovating existing roofs and a construction structure using the same, and more particularly to a renovation roofing material and construction structure using the same that are installed to cover existing thin-plate roofing materials that are installed in a stepped manner overlapping in the eaves-ridge direction. The roofs of buildings such as houses are often constructed using rectangular, thin roofing sheets that are layered in a stepped pattern along the eaves and ridge. In this case, "layered in a stepped pattern" means that the lower ends of the roofing sheets positioned on the upper side (ridge side) of the roof slope are sequentially layered on top of the upper ends of the roofing sheets positioned on the lower side (eaves side) of the roof slope. Replacing a roof constructed in this manner typically involves completely removing the existing roofing sheets and installing new ones. However, this is time-consuming and difficult to do while the building is in use. Therefore, a method of roof replacement (also known as the cover method) is used, where a renovation (same meaning as repair) roofing material is attached to the surface of the existing roofing sheets, covering the existing roofing material. Japanese Patent Publication No. 2001-073506 (Patent Document 1) discloses a roofing material for renovation that facilitates the replacement of such roofs. The roofing material disclosed in Patent Document 1 is a roofing material provided on the surface of a plurality of roofing materials that are arranged in a continuous line along the slope direction of the roof, with the lower ends of roofing materials positioned on the upper side of the slope sequentially overlapping the upper ends of roofing materials positioned on the lower side of the slope direction. It is characterized by comprising a main body that covers the surface of the roofing material, a clamping portion that clamps the lower end of the roofing material from both sides, and a clamped portion that is sandwiched between the roofing material and the roofing material positioned on the upper side of the slope direction of this roofing material. According to the roofing material for remodeling disclosed in Patent Document 1, the main body is slid along the surface of the roofing material from the lower side in the slope direction to the upper side in the slope direction, the clamping portion is sandwiched between the roofing material and the roofing material positioned above it in the slope direction, and the clamping portion is fitted into the end face of the roofing material, thereby enabling the remodeling roofing material to be attached to the roofing material. This eliminates the need to engage the remodeling roofing material with other remodeling roofing materials, making the installation of remodeling roofing materials easier compared to conventional methods. Japanese Patent Publication No. 2001-073506 This is a partial perspective view of a roof under renovation using the roofing material 100 for renovation according to the first embodiment of the present invention.Figure 1 shows (A) a three-view drawing of the roofing material 100 for renovation and (B) a three-view drawing of the joint cover 150.This is a plan view of Figure 1.This is a cross-sectional view in the flow direction of Figure 1.This is a cross-sectional view in the gable direction of Figure 1.This is a partial perspective view of a roof under renovation using the renovation roofing material 200 according to a second embodiment of the present invention.Figure 6 shows (A) a three-view drawing of the roofing material 200 for renovation and (B) a three-view drawing of the joint sacrificial plate 250.This is a plan view of Figure 6.This is a cross-sectional view in the flow direction of Figure 6.Figure 6 is a cross-sectional view in the direction of the gable.This is a partial perspective view of a roof under renovation using the renovation roofing material 300 according to the third embodiment of the present invention.Figure 11 shows (A) a three-view drawing of the roofing material 300 for renovation and (B) a three-view drawing of the joint sacrificial plate 350.This is a plan view of Figure 11.This is a cross-sectional view in the flow direction of Figure 11.This is a cross-sectional view in the gable direction of Figure 11.This is a partial perspective view of a roof under renovation using the renovation roofing material 300 according to the fourth embodiment of the present invention.Figure 16 shows (A) a three-view drawing of the roofing material 400 for renovation and (B) a three-view drawing of the joint sacrificial plate 350.Figure 16 is a plan view.This is a cross-sectional view in the flow direction of Figure 16.This is a cross-sectional view in the gable direction of Figure 16.This figure shows a first modified example common to the renovation roofing material 100, renovation roofing material 200, renovation roofing mat