JPH04333756A - Waterproofing method for external wall tile - Google Patents

Abstract

PURPOSE:To provide a sound finish layer for a long period without marring appearance by a method wherein an external wall comprising tiles and decorative joints is coated with a penetrable waterproof material and a water repellent material, and further coated with a waterproof coating material. CONSTITUTION:After tile finishing of an external wall comprising tiles and decorative joints is executed, the whole surfaces of the tiles and the decorative joints are impregnated and coated with a penetrable waterproof material and a water repellent material. A waterproof coating material, e.g. a weather superresistant acryl silicone resin system and a fluorine resin system, is then applied. Tile substrate mortar and sticking mortar repeat water absorption expansion and dry contracting and positive and negative repeated reaction occur like thermal shrinkage but coating with the penetrable waterproof material and the water repellent material suppresses the occurrence of the repeated reaction.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for waterproofing exterior wall tiles installed on concrete buildings.

0002

[Prior Art] Traditionally, tiled exterior walls are semi-permanent and are considered to be exterior wall materials with excellent waterproof performance.
Adding waterproofness to exterior wall tiles was completely ignored.

[0003] However, soon after the completion of the exterior walls of ceramic, stoneware, and porcelain tiles, efflorescence that flows out from the vicinity of the tiles adheres to the tile surface layer, causing an efflorescence phenomenon that impairs the aesthetic appearance and design of the tiles. External wall tiles are repeatedly subjected to drying and moistening, temperature changes, vibrations, etc., and stress is generated due to movement, which causes stress peeling and cracks in the surrounding tiles and tiles, and through this, the mortar attached to the back side. Moisture penetrates into the mortar, reacts with the free lime content of the mortar, and elutes efflorescence. but,
It is known from the past that these tiles and tiles are generally waterproof, so no waterproofing treatment was applied to the exterior wall tiles when they were newly built.

Porcelain tiles, which are said to have no water absorption, can be glazed to create a colored pattern, but the surface has a structure very similar to glass, and its deterioration is due to the presence of pollutant gases contained in the atmosphere. It is said that the acidic components of the tiles chemically react with the reactive factors on the tile surface, accelerating deterioration. Also, porcelain tiles tend to lose their luster, which is said to be caused by changes in the surface layer due to dust in the atmosphere, wind and rain, etc.

[0005] The cement component CaCo3 used in meji mortar is precipitated from the back side onto the tile surface due to the influence of moisture, staining the tile surface white. Most of these are calcium carbonate. Furthermore, since the surface of the porcelain tile is also composed of a silicic acid component, precipitation from that part is also one of the stains.

[0006]

[Problems to be Solved by the Invention] As described above, conventional finishing techniques for exterior wall tiles cannot prevent deterioration and damage caused by moisture penetration and stagnant penetration, and also lead to repeated staining due to efflorescence leakage. It turns out. In addition, the performance deterioration of the aged tile surface layer and meji mortar is accelerated by repeated movement, and the water that permeates through the tiles and meji mortar promotes the outflow of efflorescence, causing the deterioration of the tile surface layer and meji mortar, which has no water absorbency. Even on unglazed porcelain tiles, car exhaust gas, which is one of the sources of atmospheric pollution, is sticky and causes dust and dirt in the air to stick to the tile surface. Other mold, algae, and moss adhere to areas with high surface humidity, propagate and spread, and progress inside like wedges in the middle, so leaving them unattended will not only damage the building itself but also damage the exterior design. It is difficult to ignore this situation, and some kind of waterproofing treatment must be considered essential.

[0007]

SUMMARY OF THE INVENTION In view of the above needs, the present invention provides a method for waterproofing exterior wall tiles and provides novel improvements in the finishing treatment of exterior wall tiles.

Therefore, in the present invention, after finishing the exterior wall tiles made of tiles and decorative tiles, the entire surface of the tiles and tiles is impregnated and coated with a permeable waterproofing material and a water repellent material, and then an ultra-weather-resistant acrylic silicone resin based material is applied. , coated with a waterproof coating material such as fluorine resin.

Although the tiles may be qualitatively different, such as those made of water-absorbing ceramic, stoneware, and non-water-absorbing porcelain, they are the same in terms of the construction method of the present invention. Further, the waterproofing material may be the above-mentioned resin-based material or any other durable waterproofing material that does not impede the design of the tile.

0010

[Function] Tile base mortar and pasting mortar repeatedly expand upon water absorption and shrink upon drying, causing repeated positive and negative reactions similar to thermal expansion and contraction, but the permeable waterproofing material according to the present invention
This is suppressed by applying a water repellent material.

[0011] In addition, rainwater that has entered through cracks not only fills the floating gaps, but also penetrates into the tile surface layer and capillaries, and into the capillaries of mortar and concrete, and when it is cold, it turns into ice and increases in volume, and its expansion pressure causes it to gradually During extremely hot weather, water vapor pressure is generated within the capillary tube, which increases stress, and the repeated stress increases the floating, but it has the effect of preventing the causes of such abnormal phenomena from occurring. .

0012

Effects of the Invention As explained above, the present invention impregnates and coats the entire surface of the tiles and tiles with a permeable waterproofing material and a water repellent material, and then coats the durable waterproofing material, thereby improving the appearance of existing building exterior wall tiles. There is no water that penetrates or stays in the tiles, and it suppresses staining and penetration of the tile surface, aging stains caused by accumulated water, and dry-wet effects, and especially in cold regions, water-absorbing tiles can be prevented from cracking or swelling due to frost damage. Peeling can be prevented, construction is extremely simple, and the effect of forming and maintaining external wall tiles as a healthy finishing layer over a long period of time without losing its aesthetic appearance is remarkable.

Claims (1)

[Claims] [Claim 1] The exterior wall made of tiles, decorative tiles, etc. is coated with a permeable waterproofing material and a water repellent material, and is further coated with a super weather-resistant waterproof coating material such as an acrylic silicone resin type or a fluorine resin type. Waterproofing method for exterior wall tiles