JP2013108295A - Roof repair method and roof material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof repair method and a roof material which, even when being irradiated with ultraviolet rays, cause no deterioration of a coating, maintain flexibility and strength, cause no cracks, and prevent rain leakage, and lengthen a useful life.SOLUTION: In a roof repair method, when a roof constructed many years ago is repaired, a waterproof coating is applied onto an old roof material as an under coating, and a non-solvent type coating, such as a mizeron resin coating, is thickly applied thereon. A roof material is provided which is obtained by applying a waterproof coating to the surface of a tile base molded into a predetermined shape as an under coating, thickly applying a non-solvent type coating thereon, putting sand on a coating film of the non-solvent type coating before the non-solvent type coating is dried, spraying a heat resistant coating thereon, and pushing and hardening it with a roller or the like.

Description

  The present invention relates to a roof repair method and a roof material mainly made of a roof material such as clay glazed tile or cement solid tile.

  Currently, clay roof tiles such as Japanese tiles and lighter cement solid tiles are mainly used as roofing materials for houses. Both of them are constantly exposed to the natural environment, causing deterioration and eventually repairing the roof. The color vest, which is often used in wooden houses, is also in the repair period.

  Currently used roofing materials are classified into cement, clay, metal, asbestos, and plastic. According to this, color vests are asbestos-based artificial slate or cement mixed with asbestos, cement, and quartz sand. It can be called a solid roof tile.

  Currently, asbestos (asbestos) is not used due to environmental considerations, but the color vests of the conventional color vests, with or without asbestos, show significant deterioration after 20 to 40 years. Major deteriorations include cracks and defects, loss of waterproofness, and brittle materials. As a result, it will lead to rain leaks.

  At present, more and more photovoltaic power generators are installed, and a roof material such as a color vest serving as a base material is required to have higher strength and durability.

When the roofing material deteriorates, it must be repaired or replaced to prevent rain leaks. Color vests, roof tiles, etc. have previously been removed and replaced with new ones, but this is irrational because somewhere needs to be repaired every year. Moreover, if it is completely replaced, it will be expensive and burdensome.
About repairing color vests, a water-soluble solvent-type paint was applied to the surface to prevent water from penetrating.

  In addition to the problems described above, recoloring is not only problematic, but especially for color vests that have become brittle at the time of renewal, there is a risk that asbestos may be broken during operation, and the same danger in disposal Therefore, from the viewpoint of ensuring safety, it is desired to be reused by repairing as much as possible while remaining on the roof.

  However, the conventional repair is to ensure the stability of the form by coating the surface with solvent-type coating, due to the strength and waterproofness of the coating. Tends to deteriorate and loses flexibility. In such a case, the reinforcing strength was not maintained, and cracks were generated, and the rainwater that entered from the cracks increased the cracks of the roof tiles, so that the expected service life could not be obtained.

  In view of the above circumstances, the present invention is a roof repair method that does not deteriorate even when exposed to ultraviolet rays, maintains flexibility and strength, does not cause cracks, does not leak, and has a long service life. The problem was to provide roofing materials.

  In order to solve the above-mentioned problems, in the restoration of a roof that has passed a long time after construction, a waterproof paint is applied as a base paint on the old roof material, and then a solvent-free paint such as a Misteron resin paint is thickened thereon. Provide a roof repair method characterized by applying.

  Further, the present invention applies a waterproof paint as a base paint on the surface of the tile base formed into a predetermined shape, and then a thick solvent-free paint is applied on the surface of the tile base before the solvent-free paint is dried. Provided is a roofing material characterized in that sand is sprinkled on a coating film, further heat-resistant paint is sprayed thereon, and the sand is pressed and hardened with a roller or the like.

  In any of the above cases, a solventless paint such as a special polyurethane resin paint or a mizeron resin paint is applied to the roofing material.

The advantages of the solventless paint are as follows.
(1) Improved durability. That is, since it is resistant to ultraviolet deterioration, the base material is protected.
(2) Prevent water leakage from cracks and cracks.
(3) Energy saving due to thermal insulation effect.
(4) Prevention of freezing and thawing action in the roof tile.

  As described above, according to the present invention, the paint does not deteriorate even when exposed to ultraviolet rays, the flexibility and strength can be maintained, the stability of the roofing material can be maintained, cracks do not occur, and the useful life of the roof can be increased. There is an excellent effect that it becomes longer, heat insulation is improved, and it can contribute to the realization of a comfortable living environment. In particular, according to the method of the present invention, cracks and cracks can be repaired, durability can be improved, and the roof material can be repaired without changing the roofing material, so that waste is not wasted and no solvent is used. Therefore, the environment is also considered.

It is a top view of the color best thatched roof which shows the repair method of the roof of this invention. It is a top view which shows the repair method of the roof by another Example. It is sectional drawing of the color best roof explaining the repair construction method of a roof. It is a perspective view which fractures | ruptures and shows the roof material by this invention sequentially. It is explanatory drawing which shows the procedure which paints the same roofing material with a perspective view in order of (A), (B), (C), (D).

  In the present invention, the old roof material 11 refers to an existing roof tile or a color vest that is spread over the roof R, and the roof material P refers to a roof tile or a color vest manufactured as a new article. Solvent-free paints are used, but two-part solvent-free urethane resin paints are called “Mizeron resin paints” or “OM paints”, especially for two-part solvent-free urethane resin paints. Is a heavy-duty anticorrosive paint that can be applied to a thick film of 2 to 3 mm, and is particularly suitable for repair.

  The solvent-free paint can ensure a useful life of 20 to 40 years. Moreover, the coating can be completed in one day for coating film formation by coating 1 to 3 mm by coating once or twice. In this case, an auxiliary element (a pigment or the like) is added to the resin as the main element, and heat is applied to impart fluidity. This is also solvent-free. Curing is accelerated by adding a curing agent to the main agent. According to this paint, a 100% solid solid film is formed. There is no reduction in film thickness.

  Examples of the resin as the main component of the solventless paint include polyurethanes, epoxy resins, acrylics, and the like. Here, examples of the resin include myxelon resin paint and OM paint. A tile material having a solvent-free paint film has good heat resistance and fire resistance.

  In FIG. 1, an example of the repair method of the roof R is shown. In this case, the old roof material 11 has passed about 30 years, and the old paint has deteriorated in all the old roof materials 11. In addition, there are some that are cracked in some places, and there are some that have further progressed and cracked.

  First, water is sprayed onto the old roofing material 11 by spraying it in the form of a jet jet, dried, and then the waterproof paint 3 is applied thereon. For this, a solvent-type paint may be used, but a solventless paint is used.

  After the waterproof paint dries, the myelon resin paint is applied as the solventless paint 5. “Mixeron resin paint” is a two-component reaction curing type, and is mixed at a ratio of 3: 1. Applying it with a spatula when it is putty-like and applying it to the cracked part will also be a complete repair. It is good to apply with a film thickness of 0.5 to 1 mm. It is also a big feature that you can work every day little by little without finishing the construction at once.

  Since Mizeron is waterproof, it is effective in preventing freezing and thawing action, and also in preventing deterioration due to acid rain. A heat-resistant paint 9 is applied on the solventless paint 5 and finished. Thereby, the solvent-free paint 5 can be protected from solar heat, and fire resistance is improved.

  FIG. 2 shows a case where sand 7 is used in addition to the above embodiment. A little heat-insulating effect can be obtained just by applying mizeron to the color vest, but by adding sand 7 the added value of anti-slip, heat insulation and fire prevention can be given. In that case, before the solventless paint 5 dries, sand 7 is sown and finished. In this case, the heat-resistant paint 9 was sprayed on the sand 7 and the top was pressed and hardened with a roller.

  FIG. 3 is a cross-sectional view of the roof R. By the way, when an old roof is a color vest, since the material is cement or asbestos, water permeates or damage such as weathering or deterioration can be considered. For this reason, general solvent-based paints have a durability of only about 5 years. However, the solventless special polyurethane resin paint can withstand 40 years against these causes of damage. In addition, if durability is improved, it is not necessary to replace the material, waste of materials (resources) is eliminated, energy is saved, and it can contribute to environmental conservation.

  4 and 5 illustrate the structure of the coating film in the manufacturing procedure of the roof material P of the color vest, and the roof material P has the base material of the color vest base 1 and the waterproof paint on the base material. 3 and a solventless paint 5 are stacked, and a layer of sand 7 and a layer of heat-resistant paint 9 (700 ° C.) are further laminated thereon.

  The substrate 1 is formed in the shape of a color vest (A), and can be pressed using special fibers, sand and cement as a binder. Do not use asbestos. As a first step, a solvent-type polyurethane resin paint is applied to the surface as a waterproof paint 3 with a brush (b). The film thickness was about 100 μm.

  On the waterproof paint 3, a misteron resin paint as a solventless paint 5 is applied by spatula (b). This film thickness was about 200 μm. Before this thick film dries, sand 7 is sown from above and attached (c). Or after spraying the heat-resistant paint 9, the sand 7 is pressed and hardened with a roller (d). This completes the roofing material P (FIG. 4).

P Roofing material
R Roof 1 Roof tile 3 Waterproof paint 5 Solvent-free paint 7 Sand 9 Heat-resistant paint 11 Old roof material

Claims (3)

  In the restoration of roofs that have been built for a long time after construction, a waterproof paint is applied as a base paint on the old roof material, and then a solvent-free paint such as a Misteron resin paint is applied thickly on the roof. Repair method.   2. The roof repair method according to claim 1, wherein the solvent-free paint is not dried and sand is sprinkled on the coating film, a heat-resistant paint is sprayed thereon, and the sand is pressed and hardened with a roller or the like. A waterproof paint is applied as a base paint to the surface of the tile base that has been formed into a predetermined shape, and then a thick solvent-free paint is applied thereon. The roofing material is characterized by spraying heat-resistant paint on top of it and pressing the sand with a roller to harden it.

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