JP2003021346A - Floor finishing member and warm water pipe unit for warm water type floor heating floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor finishing member and a warm water pipe unit for warm water type floor heating floor capable of being securely effectively laid without a consideration for contraction and expansion of the warm water pipe following a change in temperature. SOLUTION: A warm water type heating panel 1 comprises a warm water pipe unit 20 formed by fixedly mounting a warm water pipe 21 formed into a predetermined pipe pattern on a base member sheet 22 placed on a floor base 10, and a floor finishing member 30 laid on the floor base 10 to cover the warm water pipe unit 20 and having a pipe containing groove for containing the warm water pipe 21 formed in the back. The pipe containing groove for a sticking starting side U turn panel laid on one U turn portion of the warm water pipe 21 in the warm water pipe unit 20 is set to a minimum in its width while the pipe containing groove for a sticking end side U turn panel laid to cover the other U turn portion of the warm water pipe 21 is set larger in its width.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor finish material and a hot water pipe unit used when constructing a hot water floor heating floor.

[0002]

2. Description of the Related Art As a hot water type floor heating floor for heating by passing hot water through a hot water pipe arranged on a floor base, for example, as shown in FIGS. 10 (a) and 10 (b), A floor finishing material 51 in which a hot water pipe 52 is built in advance is sequentially laid on a floor base 53, and as shown in FIG. 11 (a), a pipe accommodating groove 62 for accommodating the hot water pipe is provided on the back surface. After laying the formed floor finishing material 61 on the floor base 63, as shown in FIG.
As shown in FIG. 2, there is one in which the hot water pipe 64 is inserted into the pipe accommodation groove 62 from the end face side of the floor finish material 61.

By the way, the floor heating floor shown in FIG.
Since the hot water pipe 52 is built in the floor finishing material 51 in advance, it is only necessary to lay the floor finishing material 51 on the floor base material 53. Even when the floor finishing material 51 is nailed to the floor base material 53,
If the designated position is nailed, there is an advantage that the hot water pipe 52 built in the floor finish material 51 is not damaged, but since the hot water pipe 52 is divided for each floor finish material 51, When laying the floor finish material 51 on the floor base material 53, the hot water pipe 5 built in the adjacent floor finish material 51.
Since the two must be sequentially connected through a connector or the like, there is a problem that the workability of laying the floor finish material 51 is poor.

In the floor heating floor shown in FIG. 11, it is not necessary to connect a hot water pipe to each floor finishing material, but a long hot water pipe 64 is provided in the pipe accommodating groove 62 of the floor finishing material 61 already laid. It is a labor-intensive work to pipe the pipe while making a U-turn, and again, it is impossible to construct a floor heating floor efficiently.

In order to solve the problems in the conventional hot water type floor heating floor, the inventor of the present application filed Japanese Patent Application No. 2001.
No. 135814 proposes a hot water floor heating floor with excellent workability. This hot water floor heating floor
As shown in FIGS. 12A and 12B, the hot water pipe unit 71 laid on the floor base 76 and the hot water pipe unit 71 placed on the floor base 76 so as to cover the floor base 76. The hot water pipe unit 71 is composed of a floor finishing material 74 laid on top of the hot water pipe 7 and is shaped into a predetermined pipe pattern as shown in FIG.
2 is fixed to the upper surface of the base material sheet 73, and the floor finishing material 74 is provided with a pipe accommodating groove 75 in the rear surface thereof for accommodating the hot water pipe 72 of the hot water pipe unit 71.

In the hot water type floor heating floor 70 configured as described above, the hot water pipe unit 71 is placed on the floor base 76 so as to cover the floor heating area. The pipe 72 and the pipe receiving groove 7
Since the floor finishing material 74 may be sequentially laid while accommodating in 5, the construction can be performed more efficiently than the hot water floor heating floor shown in FIGS. 10 and 11.

[0007]

By the way, the floor finishing material 74 used for the hot water type floor heating floor 70 as described above.
As shown in FIG. 13, the starting-side floor finishing material 74a that covers one U-turn portion 72a of the hot water pipe 72 in the hot water pipe unit 71, and the linear portion 7 of the hot water pipe 72.
2b, and a pasting end side floor finishing material 74c that covers the other U-turn portion 72c of the hot water pipe 72. Such a pasting side floor finishing material 74
a, pipe accommodation grooves 75a, 75b, 75c formed in the intermediate floor finishing material 74b and the laminating end side floor finishing material 74c, respectively.
In order to facilitate the accommodation of the hot water pipe 72, the groove width is set in consideration of the outer diameter of the hot water pipe 72 and the expansion / contraction amount of the hot water pipe 72 due to the temperature change. .

Therefore, for example, when the hot water type floor heating floor 70 is constructed in the midsummer when the hot water pipe 72 is most extended, as shown by the solid line in FIG.
In the U-turn portion of the pipe accommodating groove 75a in 4a, if the starting-side floor finishing material 74a is laid so that one U-turn portion 72a of the hot water pipe 72 is accommodated on the outer edge side of the pipe accommodating groove 75a, Also in the U-turn portion of the pipe accommodating groove 75c in the sticking end side floor finishing material 74c,
With the other U-turn portion 72c of the hot water pipe 72 accommodated on the outer edge side of the pipe accommodating groove 75c, the sticking end side floor finish material 74c can be laid.

On the other hand, when the hot water type floor heating floor 70 is constructed in the midwinter when the hot water pipe 72 is most contracted, as shown by the two-dot chain line in FIG.
In the U-turn portion of the pipe accommodating groove 75a in a, if the starting-side floor finishing material 74a is laid so that one U-turn portion 72a of the hot water pipe 72 is accommodated on the inner edge side of the pipe accommodating groove 75a, Also in the U-turn portion of the pipe accommodating groove 75c in the sticking end side floor finishing material 74c,
In the state where the other U-turn portion 72c of the hot water pipe 72 is accommodated on the inner edge side of the pipe accommodating groove 75c, the sticking end side floor finishing material 74c can be laid.

However, with respect to both the pipe accommodation groove 75a of the pasting side floor finish material 74a and the pipe accommodation groove 75c of the pasting side floor finish material 74c, the respective groove widths are made uniform with a certain allowance. If set, when the hot water type floor heating floor 70 is constructed in the middle of summer, as shown by the solid line in FIG. 14, the pipe accommodation groove 7 in the attachment-side floor finishing material 74a is set.
5a is provided on the inner edge side of the U-turn part of the hot-water pipe 72 so that one of the U-turn parts 72a of the hot-water pipe 72 is accommodated, and the floor finishing material 74a on the starting side is laid, or in the midwinter the hot-water floor heating floor 7
When 0 is installed, one U-turn portion 72a of the hot water pipe 72 is provided on the outer edge side of the U-turn portion of the pipe accommodation groove 75a in the attachment-side floor finishing material 74a, as indicated by a chain double-dashed line in the figure. When the sticking-side floor finishing material 74a is laid so as to be housed, the other U-turn portion 72c of the hot water pipe 72 can be housed in the U-turn portion of the pipe housing groove 75c in the sticking-ending side floor finishing material 74c. become unable.

Therefore, the operator of the hot-water floor heating floor 70 must carefully lay the sticking-side floor finishing material 74a in consideration of the expansion / contraction state of the hot-water pipe 72. There is a problem that the material 74a cannot be efficiently laid in a short time.

Further, in a state where the floor finishing material 74 is laid,
Since it is not possible to confirm the accommodation state of the hot water pipe 72 in the pipe accommodation groove 75, even if the installation start side floor finishing material 74a is properly laid in consideration of the expansion / contraction state of the hot water pipe 72, it is laid like that. It does not always mean that the floor finishing material 74a on the starting side is not properly laid, the floor finishing material 74 once laid is peeled off, and the troublesome work such as re-laying must be performed again. There's a problem.

Therefore, an object of the present invention is to provide a floor finishing material and a hot water pipe unit for a hot water floor heating floor which can be laid efficiently and surely without considering expansion and contraction of the hot water pipe due to temperature change. To provide.

[0014]

Means for Solving the Problems and Effects Thereof In order to solve the above problems, the invention according to claim 1 is such that the hot water pipe is laid so as to cover a hot water pipe unit placed on a floor substrate. A floor finishing material for a hot water floor heating floor having a pipe housing groove for housing a hot water pipe of a pipe unit formed on a back surface thereof, which is a starting side for covering one U-turn portion of the hot water pipe in the hot water pipe unit. A floor finish material, and a sticking end side floor finish material that covers the other U-turn portion of the hot water pipe, wherein the sticking side floor finish material is:
The margin of the groove width in the pipe accommodating groove set for the U-turn portion of the hot water pipe to be accommodated is minimized, and accordingly, the sticking end side floor finishing material is accommodated. A floor finishing material for a hot water floor heating floor, characterized in that a groove width margin in the pipe accommodating groove set for a U-turn portion of the hot water pipe is increased.

As described above, regarding the floor finishing material on the starting side, the margin of the groove width in the pipe accommodation groove set for the U-turn portion of the hot water pipe to be accommodated is minimized. In addition, as for the finishing-side floor finishing material, since the margin of the groove width in the pipe accommodation groove set for the U-turn portion of the hot water pipe to be accommodated is large, the finishing-side floor finishing material In the state in which the hot water pipe is accommodated in the pipe receiving groove of the material hardly changes, and one of the U-turn portions of the hot water pipe is laid with respect to the starting side floor finishing material in the state where the pasting side floor finishing material is laid. For expansion and contraction of the hot water pipe that is always positioned at a predetermined position due to temperature changes, the pipe fitting of the floor finishing material for the pasting side that accommodates the other U-turn part of the hot water pipe and has a large groove width margin It can be reliably absorbed in the groove.

Therefore, the construction operator of the hot water type floor heating floor expects a certain margin for both the pipe accommodation groove of the starting side floor finishing material and the pipe accommodation groove of the pasting side floor finishing material. Like when setting each groove width uniformly,
It is not necessary to carefully lay the floor finishing material on the starting side in consideration of the expansion and contraction of the hot water pipe, and the floor finishing material such as the floor finishing material on the starting side and the floor finishing material on the pasting side can be stored while the hot water pipe is housed in the pipe accommodating groove. The material can be laid efficiently and surely.

In particular, a hot water pipe unit for a hot water floor heating floor covered with the floor finishing material according to claim 1, wherein a hot water pipe shaped into a predetermined pipe pattern and the hot water pipe are fixed. With a base sheet,
The base material sheet or the hot water pipe is provided with a mark indicating the laying position of the starting-side floor finishing material. When the hot water pipe unit of the invention according to claim 2 is used, the start-up is performed according to the mark. By laying the side floor finish material, the hot water pipe of the hot water pipe unit can be smoothly and reliably accommodated in the pipe accommodation groove of the starting side floor finish material in which the groove width margin is minimized. Therefore, the workability of laying the floor finishing material can be further improved.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the hot water floor heating floor 1 includes a floor base 10 made of a laminated board or the like.
And a hot water pipe unit 20 placed on the floor base 10, and a floor finishing material 30 laid on the floor base 10 so as to cover the hot water pipe unit 20 placed on the floor base 10. It consists of and.

As shown in FIGS. 2 and 3, the hot water pipe unit 20 has a long hot water pipe 21 having a diameter of 5 A, which is shaped into a substantially rectangular plane while alternately U-turning at both ends. The hot water pipe 21 is fixed to the base material sheet 22, and the hot water pipe 21 is made of cross-linked polyethylene.

As shown in FIG. 4, the base sheet 22 has an aluminum foil 24 having a thickness of 50 μm and a thickness of 30 μm.
It is formed of a three-layer laminated sheet laminated with a polyethylene film 23 of m and a reinforcing paper 25 with a basis weight of 23 g / m ² , and can completely cover the hot water pipe 21 shaped into a predetermined pipe pattern. It has a size that can be.

On the upper surface of the base sheet 22, that is, on the surface of the polyethylene film 23, the hot water pipe 2 is provided.
1 is heat-sealed, and a large number of through holes 22a having a diameter of about 38 mm are formed so as to avoid the heat-sealed hot water pipe 21 portion. U-turn panel 30c to be described later, which is laid so as to cover the U-turn portion (see FIG. 6B).
The line-shaped mark 26 indicating the laying position (see (1)) is displayed.

As shown in FIGS. 2 and 5, the floor finishing material 30 is a panel base material 31 formed of a wood board such as a 5-ply plywood plate or a 3-ply plywood plate, and is attached to the surface of the panel base material 31. The surface finishing material 32 such as a veneer or the like is attached to the surface of the floor finish material 30. The surface of the floor finishing material 30 includes three pseudo grooves 32a extending in the longitudinal direction and a plurality of short grooves extending in the lateral direction between the pseudo grooves 32a. The pseudo groove 32b is formed.

Further, as shown in FIG. 6, the floor finishing material 30 is mounted on the peripheral panel 30a laid on the peripheral portion of the room where the hot water pipe unit 20 is not mounted, and on the central portion of the room. The main body panel 30b is laid so as to cover the straight portion of the hot water pipe 21 in the hot water pipe unit 20, and the U-turn portion of the hot water pipe 21 in the hot water pipe unit 20 on the starting side of the floor finish material 30 is laid. The floor finishing material 3 for the starting-side U-turn panel 30c and the hot water pipe 21 in the hot water pipe unit 20
It is classified into a sticking end side U-turn panel 30d laid so as to cover the U-turn portion on the sticking end side of 0, and the peripheral panel 30a uses a panel having the same structure as the main body panel 30b.

As shown in FIG. 6A, the main body panel 30b has a plurality of pipe accommodating grooves for accommodating the straight portion of the hot water pipe 21 in the hot water pipe unit 20 described above on the back surface of the panel base material 31. 31a are formed at regular intervals, and the sticking start side U-turn panel 30c and the sticking end side U-turn panel 30d are attached to the main body on the back surface of the panel base material 31, as shown in FIGS. A linear pipe accommodating groove 31a similar to the panel 30b is formed, and an arcuate pipe accommodating groove 31b for accommodating the U-turn portion of the hot water pipe 21 is formed between the pipe accommodating grooves 31a.

As shown in FIG. 7A, the pipe accommodating groove 31b of the starting-side U-turn panel 30c has a groove width L1 which is about 1 mm larger than the outer diameter (about 7.3 mm) of the hot water pipe 21. However, the pipe accommodating groove 31b of the U-turn panel 30d on the sticking end side has a groove width L2 that is about 5 mm larger than the outer diameter of the hot water pipe 21, as shown in FIG.

A method of constructing the hot water type floor heating floor constructed as described above will be described below. First, FIG.
As shown in (a), after laying the peripheral panel 30a on the floor base 10 from one side of the room where the floor heating floor is to be constructed, as shown in (b) of the figure, the hot water pipe unit 20 is installed. It is placed at a predetermined position on the floor base 10. In this case, two sets of hot water pipe units 20 are used.

Next, as shown in FIG. 3C, the hot water pipe 21 of the hot water pipe unit 20 is fitted into the pipe accommodating grooves 31a and 31b so that the U-turn panel 3 on the starting side.
When 0c is laid, the hot water pipe unit 20 placed on the floor base 10 is almost positioned, so that the hot water pipe 21 in each hot water pipe unit 20 is positioned.
Pull down both ends of the bottom of the floor base 10,
Connect to the main pipe under the floor.

In the pipe accommodation groove 31b of the U-turn panel 30c on the starting side, the margin of the groove width with respect to the outer diameter of the hot water pipe 21 accommodated is only about 1 mm.
As shown in (a), the accommodation state of the U-turn portion 21a on the starting side of the hot water pipe 21 in the pipe accommodating groove 31b hardly changes, and in the state in which the starting-side U-turn panel 30c is laid, The U-turn portion 21a on the starting side of the hot water pipe 21 is always positioned at a predetermined position with respect to the starting-side U-turn panel 30c.

When laying the starting-side U-turn panel 30c, the long edge of the starting-side U-turn panel 30c is aligned with the mark 26 displayed on the base sheet 22 of the hot water pipe unit 20. The hot water pipe 21
The U-turn portion 2 on the attachment side of the hot water pipe 21 is provided in the pipe accommodating groove 31b having almost no allowance for the groove width relative to the outer diameter
1a can be reliably accommodated.

Subsequently, as shown in FIG. 8D, the main body panel 30b is laid while the hot water pipe 21 is fitted into the pipe accommodating groove 31a. Then, as shown in FIG. 2E, the hot water pipe 2 in the hot water pipe unit 20.
After laying the sticking end side U-turn panel 30d so as to cover the U-turn part on the opposite side of 1, the peripheral panel 30a is laid as shown in FIG. Heating floor 1 is completed.

When the peripheral panel 30a, the sticking start side U-turn panel 30c, the main body panel 30b and the sticking end side U-turn panel 30d are laid, the pipe accommodating grooves 31a, 31 are provided.
Since the adhesive is applied to the back surface of each panel except for the portion b, the adhesive causes the adhesiveness of the attachment start side U-turn panel 30c, the main body panel 30b, the attachment end side U-turn panel 30d and the hot water pipe unit 20 to be increased. Base sheet 22
Are adhered and fixed to each other, and at the through hole 22a portion of the base material sheet 22, the attachment start side U-turn panel 30c, the main body panel 30b, the attachment end side U-turn panel 30d, and the floor base 1
0 and 0 are bonded and fixed at the same time.

Further, the hot water pipe 21 of the hot water pipe unit 20 expands and contracts in accordance with the temperature change, but as described above, the U of the hot water pipe 21 on the side where the floor finishing material 30 is applied is located.
The turn portion 21a is positioned at a predetermined position with respect to the laid-up starting side U-turn panel 30c, and the pipe accommodation groove 31b formed in the pasting-side U-turn panel 30d is located outside the hot water pipe 21. Since the groove width is set in consideration of a certain allowance (about 5 mm) with respect to the diameter, for example, when constructing the hot water floor heating floor 1 in the summer when the hot water pipe 21 is most extended. Is
As shown by the solid line in FIG. 9B, in the U-turn portion of the pipe accommodation groove 31b in the pasting-side U-turn panel 30d, the other U-turn portion 21b of the hot water pipe 21 is accommodated on the outer edge side of the pipe accommodation groove 31b. The hot water pipe 21
When the hot-water floor heating floor 1 is installed in the midwinter, when the contraction occurs most, the other U-turn portion 21b of the hot-water pipe 21 is, on the contrary, the pipe accommodating groove 31b, as indicated by the chain double-dashed line in the figure. Will be accommodated on the inner edge side of.

As described above, this hot water type floor heating floor 1
Then, the pipe accommodation groove 31 of the U-turn panel 30c on the starting side
Since the groove width of b is minimized and the groove width of the pipe housing groove 31b of the pasting-side U-turn panel 30d is increased, the groove width of the pipe housing groove for housing the U-turn portion of the hot water pipe is reduced. Like when you use the U-side panel and the U-side panel that are set to the same side,
There is no need to carefully lay the U-turn panel 30c on the starting side in consideration of expansion and contraction of the hot water pipe 21.
While the hot water pipe 21 is reliably accommodated in a and 31b, the sticking start side U-turn panel 30c, the main body panel 30b, and the sticking end side U-turn panel 30d can be efficiently laid.

Further, by minimizing the groove width of the pipe accommodating groove 31b of the U-turn panel 30c on the starting side,
Although it becomes difficult to store the hot water pipe 21 in the pipe storage groove 31b, in the hot water floor heating floor 1, a line-shaped mark 26 indicating the laying position of the sticking start side U-turn panel 30c is displayed on the base sheet 22. Since the hot water pipe unit 20 is used, the U-turn panel 30c on the starting side is marked 2
By adjusting to 6, the starting side U-turn panel 30
c can be laid smoothly.

In the above-described embodiment, the groove width of the pipe receiving groove 31b of the U-turn panel 30c on the starting side is set to be about 1 mm larger than the outer diameter of the hot water pipe 21, but the invention is not limited to this. Instead, the groove width may be set so as to be as small as possible in consideration of the workability of housing the hot water pipe 21.

Further, in the above-described embodiment, the groove width of the pipe accommodating groove 31b of the sticking end side U-turn panel 30d is set to be about 5 mm larger than the outer diameter of the hot water pipe 21, but the invention is not limited to this. Instead, it is desirable to set it as large as possible without causing problems.

Further, in the above-described embodiment, the line-shaped mark 26 indicating the laying position of the attachment-side U-turn panel 30c is displayed on the base material sheet 22 of the hot water pipe unit 20, but the present invention is not limited to this. However, various display methods such as displaying a line-shaped mark on the surface of the hot water pipe 21 can be adopted.

Further, in the above-mentioned embodiment, the base sheet 22 is formed with the through holes 22a for transmitting the adhesive, but the present invention is not limited to this, and the base sheet 2 is not limited thereto.
It is not necessary to form the through holes in the base material sheet 22 as long as the material forming 2 itself has the adhesive permeation performance. Further, if the hot water pipe unit 20 is separately bonded to the floor base 10 with an adhesive, it is not necessary to form the through holes 22a in the base material sheet 22 in particular.

[Brief description of drawings]

FIG. 1 is a sectional view showing a hot water type floor heating floor using a floor finish material and a hot water pipe unit according to the present invention.

FIG. 2 is an exploded cross-sectional view showing the hot water floor heating floor of the above.

FIG. 3 is a plan view showing the hot water pipe unit of the above.

FIG. 4 is a cross-sectional view showing a base sheet used in the hot water pipe unit of the above.

FIG. 5 is a plan view showing the above floor finishing material.

FIG. 6 (a) is a back view showing the floor finishing material (main body panel) of the above, (b) is a back view showing the floor finishing material (pasting side U-turn panel) of the same, and (c) is the same. Floor finishing material (pasting end U
It is a rear view which shows a turn panel.

FIG. 7 (a) is a partially enlarged rear view showing the above-mentioned pasting side U-turn panel, and FIG. 7 (b) is a partially enlarged rear view showing the above pasting side U-turn panel.

8 (a) to (f) are process drawings showing a method of constructing the hot water floor heating floor of the above.

FIG. 9 (a) is a partially enlarged rear view showing a state where a hot water pipe is accommodated in the pipe accommodating groove of the sticking-start side U-turn panel, and FIG. 9 (b) is a pipe accommodating groove of the stick-end side U-turn panel in the same. FIG. 6 is a partially enlarged rear view showing a state in which the hot water pipe is housed in the interior.

FIG. 10 (a) is a cross-sectional view showing a floor finishing material used for a conventional floor heating material-integrated hot water floor heating floor, and FIG. 10 (b) is a step showing a method for constructing the same floor water heating floor. It is a figure.

FIG. 11 (a) is a cross-sectional view showing a floor finishing material used for another conventional hot water floor heating floor, and FIGS. 11 (b) and 11 (c) are steps showing a construction method for the hot water floor heating floor. It is a figure.

FIG. 12 (a) is a sectional view showing a hot water type floor heating floor as a background art, and FIG. 12 (b) is an exploded sectional view showing the hot water type floor heating floor.

FIG. 13 is a partially enlarged back view showing a state in which a hot water pipe is housed in a pipe housing groove of a floor finish material used in the above hot water floor heating floor.

FIG. 14 is an explanatory diagram for explaining a problem that the above floor finishing material has.

[Explanation of symbols]

1 Hot water floor heating floor 10 floor base 20 Hot water pipe unit 21 hot water pipe 21a, 21b U-turn part 22 Base material sheet 26 landmarks 30 floor finishing materials 30a peripheral panel 30b body panel 30c Starting side U-turn panel 30d U-turn panel on the end side 31 panel base material 31a, 31b Pipe accommodation groove 32 surface cosmetics

Claims (2)

[Claims] 1. A hot water floor heating floor, which is laid so as to cover a hot water pipe unit placed on a floor base and has a pipe housing groove for housing a hot water pipe of the hot water pipe unit formed on the back surface. Which is a floor finishing material, wherein the starting side floor finishing material covers one U-turn portion of the hot water pipe in the hot water pipe unit, and the pasting side floor finishing material covers the other U-turn portion of the hot water pipe. With respect to the starting side floor finishing material, the groove width margin in the pipe housing groove set for the U-turn portion of the hot water pipe to be housed is minimized, and with this, The floor finishing material for the pasting end side is for a hot water floor heating floor, characterized in that a groove width margin in the pipe accommodation groove set for the U-turn portion of the hot water pipe to be accommodated is increased. Floor finishing material. 2. A hot water pipe unit for a hot water floor heating floor covered with the floor finishing material according to claim 1, wherein the hot water pipe is shaped into a predetermined pipe pattern and the hot water pipe is fixed. A base material sheet, wherein the base material sheet or the hot water pipe is provided with a mark indicating the laying position of the sticking side floor finishing material. unit.