Opening a new horizon in the construction repair market Pentech goes global with K-waterproof

7 Roof Guard Methods prevent cracks and leaks at the source

The most common place for water leakage is on the roof. For waterproofing, urethane is used as the main material, mixed with silicic acid to create a coating, and the total construction is carried out in three stages: lower, middle, and upper. However, urethane has a significant drawback: it peels off and loses its waterproofing properties over time, and the flakes can block drainage pipes, preventing rainwater from draining away, especially leaks that seep into cracks in the concrete. Pentech’s 7 Roof Guard Methods is a complete waterproofing system that uses a combination of exposed, thermal and waterproofing composites to seal cracks and stop leaks at their source. These methods are constructed without demolishing or removing the construction surface, and use eco-friendly sheets and waterproof paint to create a highly durable waterproof coating film by continuously overlapping a total of seven layers without seams. The seven processes are: base preparation and roof guard installation, initial application of the middle coat, attachment of the floor sheet, impregnation of the middle coat, first application of the middle coat, second application of the middle coat, and the top coat of thermal insulation. This allows it to seal even cracks in concrete that have already formed, while maintaining a strong waterproofing seal for a long time.  Roof Guard can minimize the waste generated when removing the coating to reduce disposal costs and environmental pollution, and it is waterproofed by reinforcing the parts that are vulnerable to leaks and typhoons (such as rear shingles, corners, connections, and bends) and then connecting the waterproof side with the sheet to cover the entire roof. This also makes it very easy to check and supervise the progress by using different paint colors for each process. “Roof Guard is a waterproofing method that was first developed based on the basic patent of the thermal insulation composite waterproofing method, and has gradually expanded to the fields of slab, singles, metal sheet, color steel sheet, parapet, ALC exterior wall waterproofing, and exterior wall waterproofing according to the characteristics of each waterproofing part. Roof Guard is currently the most adopted waterproofing method for apartment buildings due to its eco-friendliness and the best waterproofing function.” says CEO Kim Jin-su. 

 

Slab, singles, metalwork, color steel, parapet, ALC exterior wall waterproofing applications

Roof Guard can be used on everything from parapets, slabs, shingles, metalwork, and anything else that cannot be waterproofed due to steep slopes. Since the main material of a gable roof is coal, prolonged exposure to sunlight can oxidize the petroleum components, causing them to lose their elasticity, and temperature changes can cause damage. Roof Guard is constructed by impregnating composite sheets with waterproofing materials, so they can form a consistent waterproofing layer regardless of the slope, and can be installed immediately without demolishing the existing singles. “Roof Guard is a waterproofing method that was first developed based on the basic patent of the thermal insulation composite waterproofing method, and has gradually expanded to the fields of slabs, singles, metal sheets, color steel sheets, parapets, ALC exterior wall waterproofing, and exterior wall waterproofing sheets according to the characteristics of each waterproofing part, and is currently the most adopted waterproofing method for apartment houses due to its eco-friendliness and best waterproofing function.” says Kim. Many newer apartment buildings have flat, slab roofs. While slab roofs have the advantage of being easy to maintain because you do not have to worry about breakage like you do with singles, they also have a significant disadvantage: they will inevitably leak if not constantly maintained. This is especially true during the rainy season, when rainwater can pool on the roof for long periods of time. In addition, the number of leaky apartments is increasing rapidly due to the frequent heavy rains caused by rapid climate change. Roof Guard is recognized as the best solution for waterproofing slab roofs. It is an exposed, thermal and waterproofing composite with no seams or joints, which minimizes the demolition of the existing waterproofing layer for a complete waterproofing installation, and it is easy to install by anyone without special equipment, making it accessible to apartments and other multi-family houses. This can be applied to color steel sheet roofs, metal roofs, and parapets that have not been repaired due to steep slopes. In the case of color steel sheet and metal roofs, the seams can be waterproofed with composite sheets to create semi-permanent seam bonding. It is also considered a great advantage that the composite sheet waterproofing that integrates the entire roof can further increase the rigidity of the roof after construction. Parapets are also prone to cracks and leaks as apartments age, but there was no waterproofing solution available for parapets. However, Roof Guard has developed a fundamental waterproofing method that wraps around the entire parquet, which can completely solve the leakage problem even if there are existing cracks, and has received an explosive response from the industry. 

 

Damage from exterior wall leaks skyrockets, and a new concept called exterior wall waterproofing is introduced to the world for the first time 

Pentech was also the first to introduce the concept of exterior wall waterproofing to the market. Until recently, exterior walls were not even considered waterproof, as water simply ran off without pooling. However, as the number of aging apartments increases, the number of leaks from cracks in the exterior walls is rapidly increasing, and apartment management companies are becoming increasingly worried. The most common cases of leaks are caused by rainwater penetrating into the seams of the exterior wall structure at the joints between floors, such as PC structures and dry bits, and there are even cases where water penetrates into the cracks of the veranda railing and corrodes the internal steel bars. One of the biggest problems is lightweight concrete ALC blocks, which are most commonly used as exterior wall materials for apartments, but because of their lightweight bubble form, they absorb moisture, causing them to corrode and delaminate over time and eventually fall off the building. In Korea, where temperature differences are severe throughout the year, this phenomenon is progressing more rapidly. Fine cracks appear on the exterior walls where ALC blocks have fallen off, and the gaps become larger over time. So it eventually leads to water leaks. Previously, repairs were done by putting and repainting with water-based paint. However, this method can never completely block water leaks. A water leak may occur again in the same spot after a year or two, or a water leak may occur in another unexpected place. The company developed Wall Guard, a waterproofing system that extends the patented composite sheeting process used on rooftops and roofs to exterior walls, which are vertical walls. 

 

WallGuard, a revolutionary new painting method that goes beyond patching and seals leaks

Perfectly fills cracks, stops leaks, prevents secondary accidents, and is highly aesthetically pleasing to the building

To repair cracks, Wall Guard solved the problem by impregnating high-elasticity putty and stitch-bonded polysheet with increased tensile strength with waterproofing materials, while the same method applied to inter-floor joints was also applied to cracks in window frames and veranda railings. Waterproof paint (water-based acrylic type) used for Wall Guard works in a completely different way than general water-based paint when painting exterior walls. Ordinary water-based paints will fade and lose their aesthetic appeal after three years, and worst of all, they are not waterproof at all. Wall Guard’s premium waterproofing paint, on the other hand, uses a special 100% water-based acrylic resin that forms a self-crosslinking structure, similar to the intertwining of tree roots or rattan vines, which gives it excellent tensile and surface strength. In simple terms, it is a revolutionary new coating method that goes beyond partial repairs and eliminates leaks. It has high durability, excellent stain resistance, alkali resistance, and weather resistance, and it also has a very good heat insulation function because it reflects radiant heat instead of absorbing it. It has been proven to be excellent through comparative tests of stain resistance of waterproof paints, and it has a high elasticity that even if a sample of waterproof paint applied to cardboard is crumpled, it will regain its original shape. It is also recognized for its glossy properties, which makes it very aesthetically pleasing after construction. Pentech recently installed Wall Guard on the exterior wall of a Japanese company’s factory in South Korea, which was installed after careful verification by the Japanese company, which once again recognized Pentech’s technical excellence. ALC block dislodgment is another issue, as the number of cases of ALC block fragments falling from buildings and injuring people or damaging vehicles is on the rise. During the thawing season, there are a lot of safety accidents caused by ALC falls, and Wall Guard can prevent these accidents by waterproofing the entire wall. 

 

Pentech leads the domestic market, becomes a pioneer in K-waterproofing, and expands globally

Pentech is now one of the most well-known names in the Korean waterproofing market. The company has successfully waterproofed the rooftops of 70 LG Metro City apartments in Busan, as well as hundreds of apartment complexes and factories across the country, with management companies expressing high levels of satisfaction. The company has also been actively exploring overseas markets, most notably in Southeast Asia, where there is plenty of rainfall, but the associated housing conditions are very poor. Last year, the company carried out renovations at local universities in Cambodia and the Philippines, and the fact that the work was done in conjunction with community service made it even more meaningful. The company carried out rooftop waterproofing and exterior wall painting at a university in Manila, Philippines, and last month, the company traveled to Vietnam to sign an agreement with Tra Vinh University to carry out renovation work, spreading the excellence of K-waterproofing overseas. The company also continues to carry out various volunteer activities and campaigns such as building houses, briquette service, and food donation, and has established the corporation ‘Blue Umbrella of Love’ to carry out more systematic activities. Kim’s bold determination and tremendous drive have been the biggest drivers of the company’s growth as a leader in the construction repair market with superior technology and ESG management. He is better known as “The Rooftop Man” for his YouTube channel. He uploads videos of himself traveling to various sites and constructing projects, as well as visiting related companies after construction to get thorough feedback, and he also visits various leakage sites at home and abroad to suggest the best waterproofing solutions. His bold actions have attracted the attention of industry experts and the general public alike.