JP6960202B1 - Mortar thin coating finishing method for ventilation method and mortar thin coating finishing method using the base material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base material made of rib lath which can be surely applied by making the mortar coating thickness of about 15 mm using a compounded mortar, and an outer wall lightweight mortar thin coating finishing method using the base material. I will provide a. SOLUTION: The present invention is a base material 1 for thin coating of mortar for ventilation method used when applying a ready-made mortar 9 to form an outer wall of the mortar, and the base material 1 is a rib lath 2 and the rib lath. The rib lath 2 is configured to have a backing material 3 adhered to the back surface of No. 2, and the rib lath 2 is an original plate having a steel plate thickness of 0.3 mm and having an original plate standard approximately equivalent to that of a hot-dip zinc-plated steel strip or a hot-dip zinc-plated steel strip. The rib height is 3 mm or more and less than 4 mm, the rib pitch is 75 mm, the number of meshes between the ribs is the fourth, and the mass is about 800 g / m2. The backing material 3 has thicknesses of 20 μm and 30 g / m2. It is characterized in that it is composed of a polyester non-woven material having a rough surface on the front surface and a smooth surface on the back surface. [Selection diagram] Fig. 1

Description

The present invention relates to a mortar thin coating finishing base material and a lightweight mortar thin coating finishing method for an outer wall ventilation method of a house using the mortar thin coating finishing base material.

In recent years, the outer wall mortar coating thickness using a ready-made mortar has been approved as a coating thickness of 15 mm or more, and within the above specifications, the mortar coating thickness should be as thin as possible, that is, as much as possible. There is a demand for a lightweight mortar outer wall with a coating thickness close to 15 mm.
This is because even if the mortar coating thickness is thinner than the conventional mortar coating thickness, the predetermined quality can be maintained, and if the mortar coating thickness is within the standard, the construction speed can be improved and the construction cost can be reduced. For the mortar coating with a coating thickness of 15 mm using the prepared mortar, it is preferable that the undercoat is 10 mm (to the extent that the lath surface is hidden) and the topcoat is 5 mm. That is, a topcoat thickness of about 5 mm from the lath surface is required.

Here, the conventional rib lath is composed of a plate thickness of 0.3 mm, a rib height of 5 mm, and a rib spacing of 150 mm. Tarpaulin paper and polymic paper are used as the backing material, and the backing material is glued or stitched to the rib lath. It consisted of stitches.

However, when the above-mentioned rib lath is used and the mortar coating thickness is about 15 mm, there is a problem that cracks are likely to occur.
The cause of cracks is that the rigidity of the ribs formed at a mountain height of 5 mm is too strong, and cracks are likely to occur in the rib direction (lateral direction). The rib height is 5 mm + 5 mm (10 mm) because it crosses and overlaps. Furthermore, on top of this 10 mm rib height, the thickness of the plate must also be considered. Then, the topcoat thickness of 5 mm cannot be secured.

In addition, since the rib lath is generally attached like a brick, there may be two or three layers at the end of the rib lath. Then, the part becomes thicker, and it is necessary to apply more to cover the lath surface of three layers especially at the time of undercoating. Then, there is a problem that the topcoat portion is inevitably thinned and cracks are likely to occur.

In particular, when the coating thickness of the thin mortar coating becomes uneven due to the presence of two or three layers as described above, the mortar is cured faster and weaker in the thin mortar coating, but the mortar is coated. Since curing is slow and strong in the thick part, cracks may occur in the form of pulling the thin part in the thick part.

In addition to the above reasons, there are many other reasons that the conventional mortar thin coating method using rib lath cannot finish the mortar wall surface smoothly, and it takes technology, material cost (adjustment) and labor to apply it smoothly. There was also a problem that it cost more and led to an increase in cost.

For example, as a factor that makes it impossible to perform smooth construction at the time of finishing, the ribs may be crushed at the time of main fastening (staple fastening, etc.) to the ventilation furring strip (on columns / studs). At that time, since the ribs warp toward the surface in an arch shape, the lath surface becomes wavy and difficult to apply.

In addition, mortar dripping occurs during mortar undercoating and curing, and the surface of the dripping part tends to rise due to the occurrence of the mortar (the ribs of the rib lath and the lining material are glued, and the mortar that has dropped). To escape to the surface).

Furthermore, as mentioned above, the backing material that is integrated with the riblas is mostly tarpaulin paper (kraft paper + bron + kraft paper) or polymic paper (kraft paper + PE + kraft paper), and these backing materials are transparent. Since there is no such material, the base part (ventilation furring strip) cannot be seen during construction, which reduces the efficiency of the construction work of fixing the base material to the basement part (ventilation furring strip), and there is a problem that it is difficult to understand at the time of inspection. ..

In recent years, the number of skilled workers has been decreasing, and in order to overcome the above problems, it is urgent to train and secure skilled workers, and it is necessary to increase the number of skilled workers while improving construction efficiency and simplifying construction. There was a problem that it had to be done.

Japanese Unexamined Patent Publication No. 2013-185300

Thus, the present invention has been devised in order to solve the above-mentioned conventional problems, and provides a base material made of rib lath which can be reliably applied by increasing the mortar coating thickness to about 15 mm using a ready-made mortar. That is, to provide a base material made of rib lath having a strong coating thickness that keeps the coating thickness and to prevent mortar from turning around in the ventilation layer, and to provide a base material made of rib lath which is hard to crack even with a thin coating of premixed mortar. To provide a base material that can keep a coating thickness of about 15 mm even if two or three riblass are stacked, and to provide a base material made of riblass that makes the mortar wall look good and the surface of the mortar wall is finished smoothly. To provide a base material with less warping of rib lath even during the main fastening of staples, to provide a base material that can reduce the amount of mortar dripping and prevent pre-harassment, and to increase the rib height with a steel plate thickness of 0.3 mm. By changing the rib pitch from 5 mm to 3 mm and the rib pitch from 150 mm to 75 mm, it is possible to provide a base material that can be easily cut using iron cutting scissors and can be constructed flat, and the outer wall is lightweight using the base material as described above. It is an object of the present invention to provide a mortar thin coating finishing method.

The present invention
It is a base material for thin coating of mortar for ventilation method used when applying ready-mixed mortar to form the outer wall of mortar.
The base material is composed of a rib lath and a backing material adhered to the tip of the rib crest of the rib lath.
The rib lath is a hot-dip galvanized steel strip whose original plate standard is hot-dip galvanized steel strip and is pressed with a steel plate thickness of 0.3 mm. Consists of about 800 g / m ² or more ,
The backing has a thickness of the mass of 20μm and 30 g / m ^2, the surface back side is constituted by a polyester non-woven fabric formed on the smooth surface is rough, the surface side of the backing material to the rib crest tip of the Riburasu It is bonded and is configured to have a space having a thickness substantially corresponding to the height of the rib ridge between the tip of the rib ridge and the backing material.
Characterized by that
or,
It is a base material for thin coating of mortar for ventilation method used when applying ready-mixed mortar to form the outer wall of mortar.
Lower Chizai is configured to have a backing which is adhered to the rib crest tip of Riburasu and said Riburasu, the Riburasu is steel sheet thickness in the original sheet standard galvanized steel strip is a 0.3mm original plate Pressed, the rib height is 3 mm or more and less than 4 mm, the rib pitch is 75 mm, the number of meshes between the ribs is the fourth, and the mass is about 800 g / m ² or more. It is composed of a polyester non-woven fabric having a rough surface and a smooth back surface having a mass of ^2, the front surface side of the backing material is adhered to the tip of the rib ridge of the rib lath, and the space between the tip of the rib ridge is the lining. A plurality of base materials configured with a space having a thickness substantially equivalent to the height of the rib mountain between the material and the material are used.
In the laying of the base material, the first piece of the base material is laid from the lower end of the outer wall surface, and in the laying of the second and subsequent base materials, the ribs of the adjacent base materials are overlapped and horizontal. It is laid continuously in the direction, and the mortar is applied on the laid base material with a mortar undercoat thickness of 10 mm, a topcoat thickness of 5 mm, and an overall coating thickness of 15 mm.
Characterized by that
or,
The thickness of the overlapping portion when the base material is laid up and down is such that the base material to be laid above is overlapped with the two overlapping portions of the base material laid earlier, and a total of three layers are overlapped. Lay the mating part with a thickness of 10 mm or less.
Characterized by that
or,
From the outside of the base material attached to the outdoor side of the housing frame, the premixed mortar is applied to a thickness of 10 mm for the undercoat thickness and 5 mm for the topcoat thickness. Form and
The upper and lower end surfaces of the mortar-coated outer wall portion on which the ventilation portion is formed are open, and a ventilation end fixing tree is attached to the opening on the upper and lower end surfaces, and the thickness of the ventilation portion is maintained by attaching the ventilation end fixing tree. Air inflow hole is provided,
It is characterized by that.

According to the present invention, it is possible to provide a base material made of rib lath that can be reliably applied by making the mortar coating thickness of about 15 mm using a compounded mortar, and keeping the coating thickness as described above, and having a rigidity that makes it difficult for the mortar to rotate around the ventilation layer. A base material made of strong rib lath can be provided, a base material made of rib lath that does not easily crack even with a thin coating of ready-made mortar can be provided, and a base material that can keep a coating thickness of about 15 mm even if two or three rib laths are stacked. Can provide a base material made of rib lath that looks good and finishes the mortar wall surface smoothly, and can also provide a base material that has less warp of the rib lath for the staple fastening, reducing the amount of mortar dripping and preventing pre-harassment. It is possible to provide a base material that can be used, and it is possible to provide an outer wall lightweight mortar thin coating finishing method using the base material as described above, which is an excellent effect.

It is explanatory drawing (1) explaining the structure of the base material by this invention. It is explanatory drawing (2) explaining the structure of the base material by this invention. It is a general structure explanatory drawing explaining the general structure of the Example to which this invention is applied. It is a general structure explanatory drawing explaining the general structure of the part of two layers | stack 3 layers of a base material.

Hereinafter, the present invention will be described based on the examples shown in the figure.
FIG. 1 shows the configuration of the base material 1 according to the present invention.
The base material 1 is a base material for thin coating of mortar used when applying a ready-mixed mortar to form an outer wall of the mortar, and the base material 1 is a lining that is adhered to the rib lath 2 and the back surface of the rib lath 2. It is composed of a material 3 and a material 3. Here, the premixed mortar refers to a mortar having a high adhesive strength that can be used only by kneading with water by roughly blending an aggregate, a polymer resin, or the like with cement.

The present invention has been devised with respect to a base material for thin coating of mortar used when applying this premixed mortar to form an outer wall of mortar, and a mortar thin coating finishing method using the base material.

The rib lath 2 uses a hot-dip galvanized steel strip or a hot-dip galvanized steel strip having a steel plate thickness of 0.3 mm, and the original plate is press-processed, that is, punched, and then stretched and developed. Te, ribs bowler less than 4mm above 3 mm, rib pitch is 75 mm, mesh number fourth between the ribs, the mass of about 800 g / ^{m 2} or more, those configuration is used, for example, 831 g / ^{m 2.}

The backing material 3 has a thickness of 20 μm and ^{a mass of 30 g / m 2} , and is made of a polyester non-woven fabric having a rough surface on the front surface and a smooth surface on the back surface. The base material 1 is formed by being adhered to the back surface.

Here, when the rib ridge height is set to 3 mm as in the present invention, the thickness of the rib lath 2 becomes about 6 mm at the place where the two rib laths 2 are overlapped. The rib height is 3 mm + 3 mm (6 mm) because it overlaps and rides on each other. Further, considering the thickness of each plate thickness of 0.3 mm on the rib height of 6 mm, it is about 7 mm, and the topcoat thickness of 5 mm can be sufficiently secured.

Further, in the three-sheet stacking portion, the rib stacking portion is 9 mm at worst (however, since the ribs often overlap in the lateral direction, about 3 mm becomes negative and the thickness may be about 6 mm). Even if the thickness of each plate is added to this, the topcoat thickness of 5 mm can still be sufficiently secured.

Further, when the rib ridge height is 4 mm, the rib lath 2 has a thickness of about 8 mm at the place where two sheets are overlapped, and at the place where three sheets are overlapped, the rib overlap point becomes 12 mm at worst, but when the ribs overlap in the lateral direction. About 3 mm is negative and the thickness is about 8 mm. Even if the thickness of each plate is added to this, a sufficient topcoat thickness of 5 mm can be secured. Therefore, in the case where the rib ridge height is 4 mm, the three-sheet stacking location is applied when the ribs overlap in the lateral direction. In this case, even if the thickness of each plate is added, a sufficient topcoat thickness of 5 mm can be secured.

By lowering the height of the rib ridge as in the present invention, there is no risk of crushing the rib when fixing with staples. Furthermore, since the ribs are not crushed, a smooth base material that does not undulate can be formed, and reliable construction can be performed.

Further, in the present invention, a wide inverted U-shaped staple is adopted, and in the case of a rib mountain height of 3 mm or more and less than 4 mm, the rib 4 is attached to the tip portion of the inverted U-shaped staple even if the staple is driven. A gap is created, and the rib lath 2 can be stopped without the rib 4 being crushed. However, if the rib height is 5 mm, it is usually adjusted so that it will not be crushed, but it may still be crushed.

From the above, the undercoat thickness of the mortar can be 10 mm and the topcoat thickness can be 5 mm, and considering the warp of the rib lath 2 due to defective construction (rib crushing), it can be judged that the lath mountain height of 3 mm or more and less than 4 mm is optimal.

(About the rigidity of rib lath 2)
The conventional rib lath is composed of a plate thickness of 0.3 mm, a rib peak height of 5 mm, and a rib pitch of 150 mm, and its rigidity is 6.594. On the other hand, the rib lath 2 of the present invention has a rigidity of 2.017 when it is composed of a plate thickness of 0.3 mm, a rib peak height of 3 mm, and a rib pitch of 150 mm.
Therefore, in order to solve the problem that the rigidity of the rib 4 is too strong and cracks in the rib direction (lateral direction) are likely to occur, the rigidity of each rib 4 is weakened to prevent the occurrence of cracks. Can be eliminated by lowering the rib peak height to 3 mm or less than 4 mm.
Further, the rigidity value of 2.017 is a rigidity more suitable for the ventilation lath.

(About rib spacing of rib lath)
It has already been mentioned that with the conventional rib spacing, the mortar drips down during the undercoating and curing of the mortar, and tends to float on the surface of the rib lath 2. This is because the ribs of the rib lath 2 and the backing material 3 are glued together, and the hanging mortar escapes to the surface of the rib lath 2 at the glued portion, so that the mortar floats up.
In the present invention, since the height of the rib ridge is set to 3 mm to 4 mm, the distance between the rib lath 2 and the backing material 3 is narrowed, and the amount of mortar applied is reduced by the narrowing of the distance. The amount of harassment that rises to the surface is also reduced.

Further, conventionally, since the rib spacing is set to 150 mm, the rib lath 2 to which the backing material 3 is glued also has a large amount of rotation (harassment amount) to the back, so an auxiliary furring strip is attached between the ventilation furring strips of the pillars or studs. In many cases, it was constructed.
However, it is necessary to consider the construction that can surely secure the ventilation layer even when the auxiliary furring strip is not attached. This is because when the auxiliary furring strip is not attached, the rigidity of the rib lath is weakened by lowering the rib ridge height.
Therefore, in the present invention, the distance between the ribs 4 and the ribs 4 in the rib lath 2 is changed from 150 mm to 75 mm, which is half of the distance. As a result, the number of the ribs 4 is doubled, the directionality of the ribs 4 is dispersed, and the same rigidity as the conventional one can be maintained.

Here, the reason why the optimum rib spacing is set to 75 mm is that if the rib spacing is less than 75 mm, there are too many ribs 4, and conversely, the force increases in the rib direction, which leads to the occurrence of cracks. Further, when the rib spacing exceeds 75 mm, the amount of mortar harassment increases, the coating thickness of the mortar thin coating becomes non-uniform, and the uniform mortar coating is affected. Furthermore, when the basic dimensions of the rib lath 2 are 3 x 6 and the width is 900 mm, the rib spacing is 100 mm, 90 mm, 75 mm, 60 mm, 45 mm, etc., which is divisible by the rib spacing of 150 mm or less. Optimal is 75 mm.

(About the number of meshes between ribs of rib lath 2)
In the conventional rib lath having a rib spacing of 150 mm, a small rib-shaped rib connecting the rib lath is provided in the middle portion of the rib lath. Then, the ribs were formed with a rib spacing of 75 mm on both sides of the small rib-shaped ribs, and a mesh was formed as a fourth mesh within the spacing.

The rib lath 2 having a rib spacing of 75 mm of the present invention is also formed with a fourth mesh number. It has been confirmed that when the number of meshes is set for the rib lath 2 having a rib spacing of 75 mm, the mortar bites well as the mortar base lath, and the mortar wall can be formed with good compatibility with the back surface. For example, when the number of meshes is increased to the fifth for the rib lath 2 having a rib spacing of 75 mm, the mesh opening becomes small and it becomes difficult for the mortar to turn to the back, so that the rib lath cannot be covered firmly. Further, in the case of the third case, the mortar does not get caught in the rib lath 2 and the mortar drips a lot.

By the way, the mesh of the rib lath 2 is manufactured by punching and stretching a thin original plate as described above, but at that time, the mesh formed is wide, flat and twisted, so that the mortar is easily entangled and is hard to sag. be.

(About the plate thickness of riblas 2)
The plate thickness of the rib lath 2 of the present invention is 0.3 mm. This is because if a rib lath 2 having a plate thickness of 0.3 mm or more is used, the rib rigidity is too strong and cracks in the rib direction are likely to occur.
Further, in the case of a rib lath having a plate thickness of 0.3 mm or more, if three rib laths 2 overlap at the time of construction, the main fastening staple loses to the plate thickness, and it is difficult to fasten the overlapping ribs 4. Furthermore, when cutting with iron cutting scissors, it is hard and difficult to cut.
On the contrary, in the case of the rib lath 2 having a plate thickness of 0.3 mm or less, the rigidity of the rib lath 2 is remarkably weak, so that there is a high possibility that the ventilation layer will be blocked when used with the ventilation lath. From the above, it is appropriate that the plate thickness is 0.3 mm.

(About the weight of riblas 2)
According to the standards of the Architectural Institute of Japan in the mortar outer wall ventilation method, the weight of the lath base material is 800 g / m ² or more.

Next, the pasting work of the base material 1 using the rib lath 2 according to the present invention will be described.
The backing material 3 is attached to one side of the base material 1. Here, to explain the types of the backing material 3, conventionally, polymic paper and tarpaulin paper have been mainly used. Polymic paper is formed by sandwiching both sides of a polyethylene sheet with kraft paper, and tarpaulin paper is formed by sandwiching both sides of an asphalt waterproof layer with kraft paper.

However, since the backing material 3, which is a waterproof paper that has been conventionally used, is made of a non-translucent member such as kraft paper such as tarpaulin paper and polymic paper, a wooden base material 1 composed of the rib lath 2 is fixed. I couldn't see (ventilated furring strips, etc.), and I often relied on the feeling of craftsmen when stapled.
However, in the present invention, since the backing material 3 which is a waterproof paper made of about translucent polyester non-woven fabric is used, it is possible to work while checking the shadow of the wooden base (ventilation furring strip, etc.) even when stopping. It became.

Further, as described above, the backing material 3 of the present invention is ^{a polyester nonwoven fabric having a thickness of 20 μm and a mass of 30 g / m 2} , and is characterized in that the front surface is rough and the back surface is smooth. Polyester non-woven fabrics with a thickness of 20 μm and ^{a mass of 30 g / m 2} are translucent members, and even if the width of the wooden base is narrow, the shadow of the wooden base can be confirmed on the back side, making the work reliable and easy. Become.

Then, the front surface side of the backing material 3 formed on the rough surface is adhered to the back surface of the rib lath 2. Therefore, the mortar to be applied is often entangled with the backing material 3 having a rough surface, and from this point as well, reliable and speedy construction can be performed.

Next, the base formation of the mortar-coated outer wall using the base material 1 will be described.
First, the backing material 3 side of the base material 1 is attached to the outside of the structural frame 7 room of the wooden house.
A moisture-permeable waterproof sheet 6 is attached to the outside of the structural skeleton 7 chamber, and a vertically extending ventilation furring strip 8 projects outward on the moisture-permeable waterproof sheet 6. It is attached. A plurality of the ventilation furring strips 8 are provided at predetermined intervals in the lateral direction, and a space portion is formed between the ventilation furring strip 8 and the ventilation furring strip 8. It functions as a ventilation part.

Here, the base material 1 is laid on the surface side of the ventilation furring strip 8 so that the tip of the convex portion of the rib 4 is in contact with the surface side.
The base material 1 can be attached to the ventilation furring strip 8 by driving a fastening member such as a staple or a nail into the surface of the ventilation furring strip 8 from the outdoor side of the base material 1. It is configured so that it can be done with simple construction.

The base material 1 can be attached to the ventilation furring strip 8 from the inside of the concave portion of the rib 4 that comes into contact with the base material 1 when it is attached to the ventilation furring strip 8. Therefore, the inside of the rib 4 can be attached. It is preferable that the bottom surface is formed so that the muzzle of a staple gun for fixing the rib lath 2 can be easily inserted and the staples can be struck.

Then, the prepared mortar 9 is applied to the outside of the base material 1 attached to the outside of the structural frame 7 chamber of the wooden house, which is the final step of the mortar-coated outer wall construction.
The premixed mortar 9 applied to the base material 1 from the outside has a shape that is received by the backing material 3 attached to the base material 1, and is premixed on the rib 4 of the base material 1 and the outer portion of the mesh portion 5. The mortar 9 is applied, whereby a tough lath mortar is obtained, so that a high-strength mortar outer wall is formed even if the mortar coating is a thin coating.

As described above, in the structural frame of the wooden house, a moisture-permeable waterproof sheet 6 for moisture permeability is attached to the outdoor side, and the backing material 3 and the wooden house attached to the base material 1 are attached. The space created between the structure and the moisture-permeable waterproof sheet 6 attached to the outside of the 7-chamber of the skeleton 7 is formed as a ventilation portion and fulfills its function.

In addition, air inflow holes 10 are provided at the upper and lower ends of the mortar-coated outer wall portion of the wooden house in which the ventilation portion is formed.
The upper and lower ends of the mortar-coated outer wall of the wooden house on which the ventilation portion is formed are open, and if a ventilation end fixed wood is attached to each of the openings, the thickness of the ventilation portion can be maintained and ventilation can be maintained. Sufficient air permeability can be ensured by providing a plurality of penetrating air inflow holes 10 in the trimmed wood.

Next, a method of forming a mortar-coated outer wall of a wooden house in which the base material 1 is continuously laid in a plane will be described.
The base material 1 is laid, for example, from the lower end of the outer wall surface of the wooden house.
After laying the first sheet of the base material 1, the second base material 1 is horizontal by superimposing the rib 4 of the second base material 1 on the rib 4 of the adjacent base material 1 laid earlier. Lay in the direction. As described above, in the present invention, several ribs 4 are overlapped with each other, and the adjacent base materials 1 can be reliably joined together. It is also one of the features of the present invention.

Next, the third base material 1 is similarly laid on the rib 4 of the second base material 1 by superimposing it on the rib 4 of the third base material 1. This is repeated to form the first stage.
Next, at the time of forming the second stage, for example, the base material 1 is cut so as to be a vertical half, that is, about half the length of the rib 4 in the longitudinal direction, and half of the cut normal base material 1. The base material 1 of the size is used as the first piece of the second stage laying.
Then, as in the case of the first stage, the base material 1 having a normal size that is not cut from the second and subsequent sheets is placed on the ribs 4 of the adjacent base materials 1 laid earlier, and the ribs 4 of the adjacent base materials 1 are placed on the ribs 4. Are laid on top of each other.

According to the above laying, the joints of the base material 1 in the first stage and the joints of the base material 1 in the second stage are not aligned, and the joints are staggered.
If the first and second tiers are laid normally instead of staggered, the joints of the base material 1 will overlap up to four sheets.
On the other hand, when the base material 1 is laid in a staggered manner as described above, the number of joints of the base material 1 can be reduced to a maximum of three, and the thickness of the overlapped portion can be reduced.

Moreover, since the mountain height of the rib 2 of the base material 1 used in the present invention is in the range of 3 mm to 4 mm, preferably about 3 mm, which is 5 mm or less, which is the conventional mountain height, the thickness of the three overlapping portions is increased by 3 mm. Since the plate thickness of the overlapped ribs 4 is 0.3 mm and the third plate overlaps the mesh portion 5 of the second plate, the plate thickness of about 0.3 mm is added, and the total thickness is about 9.6 mm. Even if the mortar is applied to the three layers, the total coating thickness of 15 mm, which is the regulation of the mortar coating thickness of 10 mm and the top coating thickness of 5 mm, can be sufficiently cleared.

Moreover, since the distance between the ribs 4 and the ribs 4 of the base material 1 according to the present invention is 75 mm, the strength of the mesh portion 5 when the mortar is applied can be sufficiently maintained. That is, there is no inconvenience that the premixed mortar 9 is bent inward due to the trowel pressure when it is applied, and the ventilation space of the ventilation portion is narrowed by the amount of bending inside.

If a conventional base material with a mountain height of 5 mm is used, the thickness of the three overlapping parts will be about 6 mm to 8 mm or more, and in order to eliminate surface irregularities and make a flat surface, the mortar coating thickness is 20 mm or more. Must be thickened. Then, even if a thin mortar coating thickness is obtained, the coating thickness must be at least 20 mm or more on the entire outer wall surface, which has the disadvantage that the construction speed becomes slow and the construction cost increases.
However, in the present invention, a thin coating of 15 mm can be sufficiently formed, and cracks do not occur.

Referring to FIG. 4, reference numeral 11 is a portion in which two base materials 1 are overlapped. Reference numeral 12 is a portion where the base material 1 overlaps most, and three sheets are overlapped.

As described above, the height of the rib 4 in the base material 1 is set to be lower than 4 mm, specifically, the height is set to a range of 3.6 mm to 2.6 mm, which is 4 mm or less, preferably 3 mm, and the thickness of the overlapped portion is set. By reducing the amount as much as possible, when the prepared mortar 9 is applied to the base material 1, the coating thickness of the prepared mortar 9 can be reduced. Moreover, it is possible to prevent cracks from the overlapping portion.

Furthermore, waste can be eliminated by using extra materials, and the weight of the mortar wall surface can be reduced.
Further, as described above, the continuous laying of the base material 1 is performed by superimposing the ribs 4 of the base material 1 in the case of stacking two sheets. It is not necessary and can be expected to have the effect of being easy to do.

1 Base material 2 Riblas 3 Backing material 4 Ribs 5 Mesh 6 Waterproof sheet 7 Structural frame 8 Ventilation furring strip 9 Ready-mixed mortar 10 Air inflow hole 11 Base material 2 layers 12 Base material 3 layers

Claims (4)

It is a base material for thin coating of mortar for ventilation method used when applying ready-mixed mortar to form the outer wall of mortar.
The base material is composed of a rib lath and a backing material adhered to the tip of the rib crest of the rib lath.
The rib lath is a hot-dip galvanized steel strip whose original plate standard is hot-dip galvanized steel strip and is pressed with a steel plate thickness of 0.3 mm. Consists of about 800 g / m ² or more ,
The backing has a thickness of the mass of 20μm and 30 g / m ^2, the surface back side is constituted by a polyester non-woven fabric formed on the smooth surface is rough, the surface side of the backing material to the rib crest tip of the Riburasu It is bonded and is configured to have a space having a thickness substantially corresponding to the height of the rib ridge between the tip of the rib ridge and the backing material.
A base material for thin mortar coating.
It is a base material for thin coating of mortar for ventilation method used when applying ready-mixed mortar to form the outer wall of mortar.
Lower Chizai is configured to have a backing which is adhered to the rib crest tip of Riburasu and said Riburasu, the Riburasu is steel sheet thickness in the original sheet standard galvanized steel strip is a 0.3mm original plate Pressed, the rib height is 3 mm or more and less than 4 mm, the rib pitch is 75 mm, the number of meshes between the ribs is the fourth, and the mass is about 800 g / m ² or more. It is composed of a polyester non-woven fabric having a rough surface and a smooth back surface having a mass of ^2, the front surface side of the backing material is adhered to the tip of the rib ridge of the rib lath, and the space between the tip of the rib ridge is the lining. A plurality of base materials configured with a space having a thickness substantially equivalent to the height of the rib mountain between the material and the material are used.
In the laying of the base material, the first piece of the base material is laid from the lower end of the outer wall surface, and in the laying of the second and subsequent base materials, the ribs of the adjacent base materials are overlapped and horizontal. It is laid continuously in the direction, and the mortar is applied on the laid base material with a mortar undercoat thickness of 10 mm, a topcoat thickness of 5 mm, and an overall coating thickness of 15 mm.
A lightweight mortar thin coating method for the exterior wall ventilation method of houses, which is characterized by this.
The thickness of the overlapping portion when the base material is laid up and down is such that the base material to be laid above is overlapped with the two overlapping portions of the base material laid earlier, and a total of three layers are overlapped. Lay the mating part with a thickness of 10 mm or less.
The lightweight mortar thin coating finishing method for the outer wall ventilation method of the house according to claim 2.
From the outside of the base material attached to the outdoor side of the housing frame, the premixed mortar is applied to a thickness of 10 mm for the undercoat thickness and 5 mm for the topcoat thickness. Form and
The upper and lower end surfaces of the mortar-coated outer wall portion on which the ventilation portion is formed are open, and a ventilation end fixing tree is attached to the opening on the upper and lower end surfaces, and the thickness of the ventilation portion is maintained by attaching the ventilation end fixing tree. Air inflow hole is provided,
The lightweight mortar thin coating finishing method for the outer wall ventilation method of the house according to claim 2 or 3, wherein the method is characterized by the above.

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