"Wall efflorescence" is a common household issue; almost every house has such problem. Lacking for correct knowledge of "wall efflorescence", most chemical engineers and waterproofing constructors gave it a wrong name called "wall cancer" simply by seeing the problem of leaking, oxidation and peeling on the wall. Later on there were chemical engineers who collected sample from the "wall cancer" and analyzed it. They discovered there were no cancer cells in the "wall cancer" actually, but it simply contained highly sodium, potassium and the mold. Since then, the market has been occupied with countless treatments for wall efflorescence, and most of the treatment contains chemicals such as diluted-acid, resin, bactericide and so on. However, most consumers did not find any effect with those products, and the difficulty of cure just veiled wall efflorescence with mystery.
"Wall efflorescence" is a phenomenon that water or humidity penetrates the leaks or holes on the wall or even to the construction of the building, causing oxidization and efflorescence interaction which lead to severe peeling problem to the wall. Most constructors do not carry out waterproofing work or choose cheap and ineffective elastic cement, especially on the place where are highly-contacted with water such as the exterior wall, bathroom, basement, balcony and the garden. Therefore, within 3 to 5 years, wall efflorescence comes along and leads to serious paint or plaster peeling problem on the wall.
Since the essential problem of wall efflorescence is caused by humidity penetration, what we have to do is simply checking on the efflorescent part, finding out the source of water or humidity and cut it off. For example, there is serious efflorescence on the top floor ceiling, from which we know it is caused by the rain that constantly penetrates and oxidizes the plaster as well as the RC structure, so the capillary action occurs and the paint starts to peel. You only need to choose climate-tolerant, waterproof, plaster-compatible, and strongly adhesive waterproof materials, then the efflorescence problem on the top floor ceiling could be solved easily.
Taiwan is located in the subtropical zone which features the humid and rainy environment. Along with the rapid industrial and commercial development over these years, the soil is wildly polluted and the construction material is severely deteriorated. For those reasons, in spite of having saved hard and bought a new house, most people could not escape from the disaster of getting a defective one with serious leaking problem in the end. Therefore, it is important that we take more attention to waterproofing construction.
Most people think the waterproofing construction is needed only when the leaking problem comes up in their house. What they don't realize is that, just like a car, a house also needs regular check and maintenance, and the maintenance circle depends on the quality of the waterproof materials which had been used. Asphalt felt and pitch were commonly used in tradition, however the maintenance should be taken every half a year. If using paint or so-called waterproof paint, the maintenance should be taken once in two years. If using the elastomeric cement or so called PU resin, it would have to be removed before applying new layers as maintenance within two years. Normally we can find several construction materials on the market, such as paint, elastic paint, ceramic tile, granite, and stone paint; however most of which are decorative or water-resistant, not hundred-percent waterproof. Some people would find the plasterer to solve the leaking and efflorescence problems of their house. The plasterer would only remove the old plaster and apply a new one, paint the wall and tile it up. Others with serious leaking problem would even call a SRC worker to demolish all rooftop plaster, lay the reinforcing bars and fill in a 15cm-thick grout. All these wrong resolutions do not only waste a lot of money, but they also do severe harm to a house.
When the plasterer or SRC worker is knocking away the original plaster, the huge vibration caused from the electric concrete breaker would lead to the structural damage to an old house. Also, with 300 kilograms of concrete and plaster covered afterward per square meter on the rooftop, there is no doubt when an earthquake comes to a 1000 square meters house pressed by extra 30 tons of concrete, the vibration and swinging force would cause an instant pulling and shearing force that could easily destroy the structure of a house. The wall and structural pillars might break immediately and put the house in danger of collapsing!
Please remember, instead of thickness, density is the only thing needed when it comes to waterproofing construction. Before finishing building a new house, the constructor should apply waterproof materials to the exterior wall, window edge, bathroom, balcony and the roof floor, and trim them up with wall decorative materials or paint. In this way, not only does it minimizes the humidity in the house and prolongs the life time of the building, but it also helps slow down aging speed and prevent cracks on the structure.
Once you have the right concept about home waterproofing, it's time for discussing the way to choice a good waterproofing material.
Once the waterproof work of the bathroom was not carried out properly during the process of house construction, "wall efflorescence" will show up on the exterior wall and downstairs ceiling right under the bathroom easily in the near future. What's worse, the room decoration on which you have spent large amount of money might be ruined by severe leaking problems. To solve the problem, all tiles and the bathtub must be knocked off before applying waterproof construction and end up with retiling, which would be a really huge job to do. Therefore, when you are buying a house or repairing the bathroom tiles, it's very important to ask the constructor to do the waterproofing job well in advance. Now we are going to talk about the correct performance of bathroom waterproof construction.
As there has been great improvement made on waterproof coating for the past few years, the waterproof function, climate tolerance and even the heatproof function of water-based waterproof coating has been highly advanced as well. Therefore, without covering any protective layer on top, the life time of waterproof coating has prolonged from 2-3 to 15-20 years.
Without covering additional protective layer, traditional waterproof materials such as the asphalt felt, PU resin and the waterproof blanket which are extremely inefficient on climate-tolerance would not sustain for more than 3 years. To prolong the life time, most construction companies would cover the plaster or cement for protection, not realizing such engineering method is doomed to failure. One reason is these materials all have high water absorption rate, so the water-intolerant PU resin, elastic cement, and waterproof blanket are easily hydrolyzed. The other reason is these materials are not anti-seismic. Once there come the earthquakes or the thermal expansion/contraction that acts on the building, the tension and the shearing force would cause cracks on the structure and tear the waterproof layer on the original crack easily and the whole waterproof engineering would be totally in vain. To solve the problem thoroughly, it needs a comprehensive excavation and finding out the leaks so that the cutting, reinforcement, anti-tension, and anti-sheering waterproof engineering could be carried out, which is really a huge working process. Since most public offices of construction in Taiwan are still adopting the traditional covering-type waterpoof engineering method, tragedies are putting on stage over and over again.
Today, Tropicalfish Coating Co. is proud to introduce our water-based waterproof coating which has taken 21 years of development, the one with 15-20 years of life time without any coverage on top, would sustain long-term soaking in water, and contains extraordinary both heatproof and anti-seismic function. Under such great progress on waterproofing coating being made, the "open-type waterproof engineering method" would replace the traditional one completely with its superior qualities of quick maintenance, easy to carry out, and low cost.
|S1 Superior Waterproofing Cement Resin||Elastic Cement||PU Resin||EPOXY Resin|
|Function as Interface||Very Good||Passable||Bad||Bad|
|Humidity for Construction Surface||>50%||>50%||Must be total dryness||Must be total dryness|
|Thickness per Layer||0.3(m/m)||10(m/m)||3(m/m)||3(m/m)|
|Waterproof Method||Penetrate the Pores||Waterproof Coating||Waterproof Coating||Waterproof Coating|
|Time Needed for Total Dryness||4~8 hours||1 Day||2~3 Days||2~3 Days|
|Tiling Condition||Tile Directly||Tile Directly||Spread 7 mm stone before tiling||Spread 7 mm stone before tiling|
|Water Tolerance||Can be soaked in water for a long period of time||3 Days||5 Days||Can be soaked in water for a long period of time|
|Toxicant||No||No||Evaporate toxic gas||Evaporate toxic gas|
|Against UV Rays||Very Good||Bad||Bad||Bad|
|Application Efficiency(M2 per Application)||80~100||25||30~40||20~25|
|Application Method on the Wall||Troweling/ Spraying/ Painting||Troweling/ Painting||Spraying Only||Spraying Only|
|Against Wall Efflorescence||Good||Bad||Bad||Passable|
|Waterproof Density||Very Good||Bad||Passable||Passable|
|Life Time||15~20 years||2-3 years||2-3 years||1-2 years|
|Counter Hydraulic Pressure||Good||Bad||Bad||Bad|
|Primer||Does not need||Need||Need||Need|
|R.C. Plaster Compatibility||Very Good||Passable||Bad||Bad|
|S1 Superior Waterproofing Cement Resin||S11 Superior Waterproofing Cement Resin||Elastic Cement|
|Water Tolerance||Can be soaked in water for a long period of time||Can be soaked in water for a long period of time||3 Days|
|Pool/Water Tank Waterproofing||Good||Extremely Good||Bad|
|Cover Extra Protection||Do not need||Do not need||Need|
|R.C. Plaster Compatibility||Very Good||Extremely Good||Passable|
|Thickness per Layer||0.3m/m||0.5m/m||1m/m|
|Time Needed for Total Dryness||4~8 hours||4~8 hours||1 Day|
|Tiling Condition||Tile Directly||Tile Directly||Tile Directly|
|Waterproof Density||Very Good||Very Good||Bad|
|Counter Hydraulic Pressure||Good||Extremely Good||Bad|
|Against Wall Efflorescence||Good||Extremely Good||Bad|
|Against UV Rays||Very Good||Very Good||Bad|
|Primer||Does not need||Does not need||Need|
|Application Method on the Wall||Spraying/ Painting||Troweling/ Painting||Painting|
|Dripping after Troweling on the Wall||No||No||Yes|
|Life Time||20 years||20 years||1-2 years|
|Tropicalfish Coating F1-C Elastomeric Waterproofing Cool Resin||Dulux Waterproof Paint||Yu Lung Enterprise PU Waterproof Glue||Dulux Anti-Crack Emulsion||KARNAK#100 Emulsified Asphalt|
|Primer||Does not need||Need||Need||Need||Need|
|Top Coat||Does not need||Need||Need||Need||Need|
|Property||Water-base||Water-base||Oil-base||Water-base / Oil-base||Emulsified oil-base|
|Package||15 L||18 L||18 L||18 L||18 L|
|Usage on Plane Surface for 3 Layers (per Bucket)||33 M2||13 M2||13 M2||13 M2||10 M2|
|Life Time||15~20 year||2~3 year||2~3 year||2~3 year||2~3 year|
|Cover Extra Protection||Do not need||Need||Need||Need||Need|
|Tropicalfish Coating Cl Cooling||Tropicalfish Coating F1-C Elastomeric Waterproofing Cool Resin||Dulux Waterproof Roof||Kingcat Paint Water-Based Heat Resistant Waterproof Paint K1-202||Kingcat Paint Anti-Heat Water-Proof Paint K1-222||Nippon Paint Cooling-Paint|
|Heat-proof Principle||(cns12381)Solar radiation reflectance 84.2% (CNS12381)||Solar direct reflectance 83.7%(ISO9050)||Nil||Hollow ceramic nanoparticles for heat resistance||Hollow ceramic nanoparticles for heat resistance||Hollow ceramic nanoparticles for heat resistance|
|Temperature Difference on Iron Sheet Surface||20~30℃(No temperature rise on the surface)||20~30℃(No temperature rise on the surface)||No data(Temperature rise on the surface)||15~20℃(Temperature rise on the surface)||15~20℃(Temperature rise on the surface)||15~20℃(Temperature rise on the surface)|
|Temperature Difference in the Building||6-8℃||6-8℃||No data||3~4℃||3~4℃||3~4℃|
|Primer||Does not need||Does not need||Need||Need||Need||Need|
|Top Coat||Does not need||Does not need||Need||Need||Need||Need|
|M2 per Layer||266 M2||150 M2||33 M2||53~60 M2||33~40 M2||50 M2|
|Life Tine||6 years||15-20 years||2-3 years||1~2 years||1~2 years||1~2 years|