JP5541631B2 - Laminated roofing material - Google Patents

Description

  The present invention relates to a roofing material for stacking that is stacked on an existing roofing material.

  As a roofing material, a roofing material for stacking that can be stacked without removing the existing roofing material has been proposed (see, for example, Patent Document 1).

  According to such a roofing material for roofing, there is no need to remove the existing roofing material, and there is no need to dispose of the waste material. Therefore, it is possible to contribute to the efficiency of the renovation of the roof and to reduce the replacement cost. is there.

JP 2005-139888 A

  By the way, on the surface of the existing roofing material, stepped parts descending from the top to the bottom are formed at predetermined intervals from the ridge to the eaves, and the surface is usually a stepped shape. In order to create a pattern similar to that of existing roofing materials, and to be able to lay over the existing roofing materials without slippage, on the front and back of the roofing material for lining, there are steps on the steps of the existing roofing material. A step is formed at the matching position. In other words, the roofing material for stacked roofs has a staircase shape on both sides.

  This roofing material for roofing has a mounting mode in which the roofing material is installed on a flexible waterproof sheet laid on the entire surface of the existing roofing material in order to ensure a waterproof measure.

  This waterproof sheet is made of a flexible material and can be laid without any gaps on the surface of the existing roofing material, but in order to work efficiently, the steps of the existing roofing material and its lower side It does not attach so that it may closely_contact | adhere with respect to the corner part between roof surfaces, but it is stretched in the state which floated from the surface from the corner | surface of the level | step-difference part to the roof surface part of the lower step side.

  However, when the waterproof sheet is laid on the existing roofing material and the roofing material for overlapping is attached on the roofing material, the waterproof sheet is in a state where it floats more than the existing roofing material. Since the step portion on the back surface of the roofing material for layering, particularly its corner, is pressed, the waterproof sheet may be torn. Moreover, even if it is not torn during the work, the portion may be torn by pressing the stepped portion after the roofing material for stacking is attached.

  The present invention has been proposed in view of such circumstances, and the purpose thereof is for overlapping so that the waterproof sheet is not damaged even if it is stacked on the existing roofing material via the waterproof sheet. To provide roofing materials.

  In order to achieve the above object, the roofing material according to claim 1 is a roofing material that is laid over a roofing sheet via a waterproof sheet. On the front surface, a stepped portion that descends from the top to the bottom is formed, and in the roofing material main body for overlapping, a stepped portion is formed at a portion corresponding to the stepped portion on the surface, while on the back surface A chamfered step portion is formed at a portion facing the step portion through the waterproof sheet.

  The present invention has the following effects.

  According to the roofing material for overlapping that according to claim 1, since the stepped portion on the back surface is a chamfered stepped portion, the chamfered stepped portion when mounted on the existing roofing material via the waterproof sheet. Does not contact the waterproof sheet, or even if it contacts, the waterproof sheet is not pressed at an acute angle, and therefore the waterproof sheet is not damaged or torn, and the waterproof property can be maintained for a long time.

It is a schematic perspective view which shows one Embodiment of the roofing material for double-glazing of this invention. FIG. 2 is a perspective view and an enlarged perspective view of a main part of the roofing material for overlapping that is shown in FIG. 1. It is a perspective view of the back surface side of the roofing material for lap. It is a top view of the roofing material for a stacking thing. It is sectional drawing of the XX line in FIG. It is the side view which showed the attachment aspect (before mounting) of the roofing material for a stacking. It is the side view which showed the attachment aspect (after mounting) of the roofing material for a stacking. (A), (b) is the elements on larger scale of the Y section of FIG. 5 which showed the connection fixation procedure of the roofing materials for overlapping thatched. (C), (d) is the elements on larger scale of the Y section of FIG. 5 which showed the connection fixation procedure of the roofing materials for overlapping thatched. It is the principal part expansion longitudinal cross-sectional view which showed the attachment state of the roofing material for a double-glazing. It is the schematic plan view which showed the continuous connection aspect to the vertical direction of the roofing material for a stacking. It is the schematic plan view which showed the continuous connection aspect to the vertical direction of the roofing material for a stacking. (A), (b) is the schematic plan view which showed the continuous connection aspect to the horizontal direction of the roofing material for a stacking.

  Embodiments of the present invention will be described below with reference to the drawings.

  A laminated roofing material A (hereinafter referred to as a roofing material A) shown in FIG. 1 is a roofing material for overlapping that is stacked on the existing roofing material 1. In addition, this figure has shown the main external shape of the roofing material A (roofing roofing material main body 10), and has abbreviate | omitted illustration about the detailed site | part.

  This roofing material A has a rectangular plate shape as the entire shape of the roofing roof main body 10 (hereinafter referred to as the roofing material main body 10), and has a similar staircase shape corresponding to the staircase shape of the existing roofing material 1. ing. That is, on the surface of the roof material main body 10, a step that is similarly lowered from one edge to the other edge at a position corresponding to the stepped portion 1 a that is lowered from above the existing roof material 1. Part 12 is formed. In the example of FIG. 1, three roof surface portions 11, 11, 11 that are continuous in the vertical direction corresponding to the staircase shape of the existing roof material 1 are illustrated in a staircase shape, but the present invention is not limited thereto. .

  Further, the upper edge 10a on the ridge side of the upper roof surface portion 11 of the roof material main body 10 is overlapped with the lower edge 10b of the roof material main body 10 adjacent in the vertical direction so as to overlap with each other (see FIG. 9) is formed through a stepped portion 12. On the other hand, in order to form the overlap part (horizontal) 5 (refer FIG. 13 mentioned later) on the right side edge part 10d of the roofing material main body 10 by overlapping the left side edge part 10c of the roofing material main body 10 provided adjacently in the horizontal direction. The polymerization surface portion (lateral) 14 is formed.

  Here, in the present specification, the upper edge portion 10a refers to an edge edge on the ridge side (upstream side), and the lower edge portion 10b refers to an edge edge on the eave side (downstream side). The vertical direction is a direction connecting the eaves and the ridge, and the horizontal direction is a direction substantially parallel to the eaves and the ridge.

  Next, the detailed structure and shape of the roof material A will be described with reference to FIGS.

  On the surface of the roof material main body 10, ribs 15 are formed along the vertical edges of the roof material main body 10 in each of the three roof surface portions 11 in the left end portion 10 c, and also in each of the roof surface portions 11 in the center. Similar ribs 15 are formed, and similar ribs 15 are also formed on each of the roof surface portions 11 at the right end portion 10d. Since the heights of the ribs 15 from the surface of the roof surface portion 11 are substantially the same and are formed on the surface of the roof surface portion 11, they have the same staircase shape as the roof surface portion 11 continuous in the vertical direction ( (See FIGS. 2, 4 and 5).

  Of these ribs 15, the three ribs 15 provided on the uppermost roof surface portion 11 are not formed so as to be in contact with the stepped portion 12 of the overlapping surface portion (vertical) 13, and are partially cut out. A gap is formed in The three gaps for each of these ribs 15 are provided with positioning recesses (vertical) 31 that fit into the ridges (positioning convex portions (vertical) 32 described later) of the roofing material body 10 that are adjacent in the vertical direction. It is composed.

  Further, a notch-shaped recess is formed in the outer surface (left side end surface portion 15a) of the left rib 15 of the middle roof surface portion 11, and the outer surface (right side end surface portion 15b) of the right rib 15 is formed. A convex portion is formed at the same position as the concave portion. These recesses and projections have shapes that can be fitted to each other, and each of them has a positioning recess (horizontal) 33 and a positioning projection (horizontal) 34 for positioning the roofing material body 10 adjacent in the lateral direction. Is configured.

  On the right side of the rib 15 formed on the right end portion 10d, a superposed surface portion (horizontal) 14 is disposed. The surface of the overlapping surface portion (horizontal) 14 is formed lower than the ribs 15, and three draining grooves 14 a for draining rainwater that communicate with each other in the vertical direction are formed on the surface.

  Further, the lower end edge portion 10b of the roof material main body 10 is formed with a ridge that protrudes toward the back surface side. As described above, this ridge constitutes a positioning projection (vertical) 32 for engaging with the upper edge 10a of the roof material body 10 installed on the eaves side.

  In addition, the overlapping surface portion (vertical) 13 disposed on the upper edge 10a is formed with a plurality of screw pyramidal projections 21 having a truncated pyramid shape (rectangular in plan view and trapezoid in side view), Small protrusions 21c are formed in the vicinity of each corner of the surface 21b of the main body 21a (see FIGS. 2 to 5).

  Further, a plurality of square bar-shaped rainwater guide portions 23 are formed on the overlapped surface portion (vertical) 13 with a space between the nail screwing convex portion 21 and the step portion 12. The rainwater guide portion 23 is inclined on either the left or right side, has a function of guiding the rainwater accumulated on the overlapping surface portion (vertical) 13 and discharging it to the downstream side, It also acts as a weir to dam the rainwater about to flow in from the upper step 12 by wind or the like.

  In addition, on the surface of the lower end edge portion 10b of the roof material main body 10, a mark portion 18 formed of a small recess for screwing a screw nail connected to the downstream roof material main body 10 is formed.

  On the other hand, as shown in FIG. 3, a plurality of frustoconical protrusions 17 are formed on the back surface of the roof material body 10 in a regular array over substantially the entire surface. As shown in FIG. 4, these protrusions 17 are desirably scattered so that the interval between the protrusions 17 is equal to or less than the sole F dimension.

  Further, the back surface of the roof material main body 10 is substantially the same as the main body 21a of the screw nail screwing convex portion 21 at the same position as the screw nail screwing convex portion 21 formed on the overlapping surface portion (vertical) 13 of the roof material main body 10. The convex part of the same shape is formed. This convex part constitutes the convex part 22 for spacers for holding between the existing roofing material 1 at a predetermined interval.

  Both the rear projections 17 and the spacer projections 22 act as spacers, and all of them are supported on the surface of the existing roofing material 1 via the waterproof sheet 3 (see FIG. 6 and the like). Are formed at the same height.

  Moreover, the step part located in the back surface side of the step part 12 of the surface side is formed as the chamfering step part 16 in which the corner | angular part inclined in the same direction as the inclination from the ridge side to the eaves side. In the example shown in the figure, the chamfered step 16 is an inclined plane, but it may be an inclined curved surface.

  Next, the attachment mode of the roof material A and the connection fixing structure of the roof materials in the vertical direction will be described with further reference to FIGS.

  First, before attaching the roof material main body 10, the waterproof sheet 3 is disposed on the existing roof material 1.

  Next, the roofing material body 10 is placed so that the stepped portion 12 matches the stepped portion 1a of the existing roofing material 1. At that time, since the waterproof sheet 3 is flexible, the waterproof sheet 3 is pressed by the protrusion 17 on the back surface side of the roof material main body 10, and the waterproof sheet 3 is firmly fixed between the surface of the existing roof material 1 and the surface of the protrusion 17. (See FIGS. 6 and 7).

  In a state where the roof material body 10 is placed on the existing roof material 1, the waterproof sheet 3 is in close contact with the surface of the existing roof material 1, but from the corner of the step portion 1 a of the existing roof material 1, Up to the spacer convex portion 22 arranged on the uppermost stream side of the roof surface portion 11 on the lower stage side of the roof material main body 10 is in close contact with the surface of the existing roof material 1 and is stretched to some extent.

  On the back surface side of the roof material main body 10, the stepped portion between the roof surface portions 11 is chamfered in an inclined shape and does not have a corner, so that the chamfered stepped portion 16 contacts the inclined waterproof sheet 3. Even if it touches the scale, it does not damage the waterproof sheet 3 because there is no right-angled or acutely sharp corner, so that the waterproof sheet 3 is prevented from being torn or damaged during or after installation. Yes (see FIG. 7).

  Further, since the projections 17 arranged on the back surface of the roofing material body 10 are formed on substantially the entire surface, the roofing material body 10 is fixed to the surface of the existing roofing material 1 via a predetermined gap 6. (See FIG. 7).

  The air gap 6 constitutes an air flow passage, and exhibits a heat insulating effect due to the air layer and a dew condensation preventing effect due to air circulation.

  Further, as shown in FIG. 4, since the interval between the protrusions 17 is less than the sole F dimension, even if a person walks on the roof material body 10 that has been installed, the roof material body 10 may break. There is no plastic deformation. The spacing between the protrusions 17 is preferably less than or equal to the sole F dimension. However, if the strength of the roof material body 10 is sufficiently high and can withstand pressing from above, the spacing between the protrusions 17 is larger than the sole F dimension. May be.

  8 (a), 8 (b), 9 (c), and 9 (d) are partial enlargements showing a procedure for connecting and fixing the roof materials A connected in the vertical direction, corresponding to the Y portion in FIG. It is sectional drawing.

  The roof material body 10 provided adjacent to the upstream side in the vertical direction is disposed so that the lower end edge portion 10b covers the overlapping surface portion (vertical) 13.

  Specifically, the roof material body 10 is placed on the existing roof material 1 according to the procedure shown in FIGS. 6 and 7 (see FIGS. 8A and 8B), and the roof adjacent to the upstream side. The material main body 10 is attached so that the positioning convex portion (vertical) 32 formed on the lower edge portion 10b is fitted to the positioning concave portion (vertical) 31 of the placed roof material main body 10 (FIG. 8 ( b), see FIG. 9C).

  In this way, the overlapping portion 4 is formed by overlapping the roof material bodies 10 and 10 (see FIGS. 9C and 9D).

  When the overlapping portion 4 is formed in this way, the upper end of the small protrusion 21c of the screw nail screwing convex portion 21 is in contact with the back surface of the roof material main body 10 provided on the upstream side, while the screw nail screwing convex portion 21 The lower surface of the spacer convex portion 22 formed on the back side is in close contact with the surface of the existing roof material 1 through the waterproof sheet 3 (see FIGS. 9C and 9D).

  Then, the screw nail 2 is driven from the mark portion 18 formed on the surface of the lower end edge portion 10b of the roof material main body 10 provided adjacent to the upstream side, and the screw nail screwing convex portion 21, the main body of the overlapping surface portion (vertical) 13, It penetrates through the spacer projections 22 and is fixed to the base (not shown) via the existing roofing material 1.

  In this way, the nail screwing convex portion 21 is formed on the overlapping surface portion (vertical) 13, that is, the entrance of the screw hole 13a of the overlapping surface portion (vertical) 13 arranged in the space of the overlapping portion 4 is the overlapping surface portion. Since it is formed at a position higher than the surface of the (vertical) 13, this screw nail screwing projection 21 becomes a weir, and rainwater that has entered the overlapped portion 4 flows further downward through the screw hole 13a. Can be prevented.

  Moreover, since the rainwater guide part 23 (refer FIG. 2) is formed in the superposition | polymerization surface part (length) 13, the rainwater which infiltrated into the overlap part 4 is discharged | emitted downstream along the rainwater guide part 23. FIG. Since this rainwater guide part 23 also has a function of stopping the intrusion of rainwater that flows backward by wind or the like from the downstream side, it contributes to the prevention of rainwater intrusion into the overlapping part 4.

  Thus, since it has a structure in which rainwater does not collect easily in the space in the overlapping portion 4, it is possible to prevent the roof material body 10 from being deteriorated due to accumulated water or moisture.

  Further, since the convex portion 22 for spacer is formed on the back surface side of the convex portion 21 for screwing the screw nail, the overlapping surface portion (vertical) 13 is firmly supported on the existing roofing material 1 and the screw nail 2 is attached. It is possible to prevent the superposed surface portion (vertical) 13 from being bent or cracked when driven.

  Further, as described above, the chamfering step 16 is formed between the roof surface portions 11 on the back surface side of the roof material main body 10, so that the waterproof sheet 3 is not contacted and the waterproof sheet 3 is torn or damaged. Can be prevented.

  FIG. 10 is a longitudinal sectional view further enlarging the main part, and a further waterproof structure will be described with reference to this figure.

  The screw nail 2 has a washer 2c with an inner packing 2b below the head 2a. When the screw nail 2 is screwed in from the surface of the roofing material body 10 adjacent on the upstream side, the screw nail 2 is firmly fixed. The packing 2b is pressed against the washer 2c to prevent rainwater from entering.

  Thus, in spite of the structure that prevents rainwater from entering from the surface side through the screw hole 19 of the roof material body 10 adjacent to the upstream side, the rainwater enters the screw hole 19 due to a capillary phenomenon or the like. There is a risk that it will reach and fall into the overlapping portion 4 due to the capillary phenomenon and travel downward along the screw nail 2.

  However, due to the small protrusion 21c of the screw nail screwing convex portion 21, a clearance space 21d is formed between the front surface 21b of the main body 21a of the screw nail screwing convex portion 21 and the back surface of the roof material main body 10 provided on the upstream side. Therefore, the rainwater that has fallen along the screw nail 2 flows out into the gap space 21d without entering the screw nail 2 further downward, and the main body 21a of the screw nail screw-in convex portion 21. It falls from the surface 21b to the surface of the polymerization surface portion (vertical) 13.

  Thus, since the small protrusion 21c is formed on the surface of the screw nail screw projection 21, the rainwater is guided to the gap space 21d formed thereby to flow down to the surface of the overlapping surface portion (vertical) 13. It is possible to prevent rainwater from entering further downward through the screw hole 13a.

  Further, the spacer convex portion 22 for preventing cracking at the time of screw nail screwing formed on the back side of the screw nail screwing convex portion 21 has the same function as the protrusion 17 formed on the back surface side of the roof surface portion 11. ing. That is, the spacer convex portion 22 forms an air flow passage by a predetermined gap 6 between the protruding portion 17 formed on the back surface side of the overlapping surface portion (vertical) 13 and the existing roof material 1. In addition, it is desirable to form the chamfered step 16 so as not to contact the waterproof sheet 3 so that the air flow passage can communicate with the upper and lower air flow passages through the step portion 1a.

  Next, with reference to the schematic plan views of FIGS. 11 and 12, positioning in the continuous connection of the roof material body 10 in the vertical direction will be described.

  As described above, in the upper edge portion 10 a of the roof material body 10, the positioning concave portions (vertical) 31 formed by the gaps between the overlapping surface portion (vertical) 13 and the ribs 15 are formed at three locations. The positioning concave portion (vertical) 31 has a size and shape that can be fitted (may be loosely fitted) with the positioning convex portion (vertical) 32 formed on the lower end edge portion 10b of the roof material body 10. When the adjacent roof material body 10 is placed from above, the positioning convex portion (vertical) 32 can be fitted into the positioning concave portion (vertical) 31 for positioning.

  When placing the roof material body 10 from above, it is necessary to place the mark portion 18 for driving the screw nail directly above the protruding portion 21 for screwing the screw nail, as shown in FIG. 9C. The vertical position can be determined simply by fitting the positioning convex portion (vertical) 32 into the positioning concave portion (vertical) 31, so that the vertical positioning can be performed easily. In addition, positioning in the horizontal direction can be easily performed by fitting and positioning the two roof material main bodies 10, 10 side by side while sliding the upstream roof main body 10 in the horizontal direction.

  As described above, the positioning concave portion (vertical) 31 is formed on the upper end edge 10a of the roof material main body 10, and the positioning convex portion (vertical) 32 is formed on the lower end edge 10b. Positioning when the material main bodies 10 are continuously arranged can be performed quickly, and the mounting work can be performed efficiently. Since the positioning recess (vertical) 31 is formed by a gap between the upstream end face of the rib 15 and the downstream end face of the overlapping surface portion (vertical) 13, a groove is formed for the positioning recess (vertical) 31. There is no need and the manufacture of the roofing material body 10 is facilitated.

  Furthermore, the positioning in the continuous connection of the roof material main body 10 in the lateral direction will be described with reference to FIGS. 13 (a) and 13 (b).

  As described above, the positioning recess (horizontal) 33 is formed in the left side end surface portion 15a (outer surface of the left rib 15) of the roof material body 10, and the right side end surface portion 15b (outside of the right rib 15) is formed. A positioning convex portion (horizontal) 34 is formed at the same position in the vertical direction as the positioning concave portion (lateral) 33 on the side surface.

  When the roof material body 10 is installed next to the roof material body 10 that has already been mounted on the roof, a positioning recess ( By positioning (horizontal) 33, positioning in both vertical and horizontal directions can be performed.

  As described above, the positioning concave portion (horizontal) 33 is formed on one side end surface portion of the roof material main body 10, and the positioning convex portion (horizontal) 34 is formed on the other side end surface portion. Positioning of the roofing material main body 10 can be quickly performed, and the mounting work can be performed efficiently.

  In the above embodiment, although the flat roof material A was illustrated, it is also possible to apply to a corrugated roof material.

A Roof material for overlapping roofing 10 Roof material body for overlapping roofing 11 Roof surface portion 12 Step portion 13 Superposed surface portion (vertical)
14 Superposition surface (horizontal)
16 Chamfered step portion 1 Existing roof material 1a Step portion 3 Waterproof sheet

Claims (1)

It is a roofing material for stacking that is stacked on the existing roofing material via a waterproof sheet,
On the surface of the existing roofing material, a stepped portion is formed that descends from above to below,
The main body of the roofing material for cascading has a stepped portion at the portion corresponding to the stepped portion on the front surface, and a chamfered stepped portion is formed at the portion facing the stepped portion on the back surface through the waterproof sheet. A roofing material for cascading roofs, which is characterized by being made.

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