The SPEP Panel is an STS+PE composite panel made by melting and compressing LDPE onto STS304. The PE side is put in contact with the water. For construction, it is attached to the concrete wall and additionally fixed with a chemical anchor of STS material at intervals of 50-70 cm along with the edge of the panel. Then, the 70-mm-wide PE welding band is welded onto each panel and the joining area, the 12 mm welding band is welded onto both sides of the 70 mm welding band, and it is finished by welding to cover the anchor built above.
After welding is complete, any defects are detected by a spark tester to be corrected, then immersed in the water. Accordingly, the SPEP Panel lining is the only product in Korea and overseas that has the double waterproofing effects of STS+PE and the ability to detect any defects on waterproof construction before being immersed in the water.
In addition, it features semi-permanent durability and hygiene, and requires almost no maintenance expenses due to easy maintenance, and it can be referred as the most inexpensive waterproof material in terms of Life Cycle Cost (LLC) expenses.
Advantages of the SPEP Panel Lining Product
Maintains secondary waterproofing using STS when the primary surface PE is damaged, and structure protection remains even when the secondary STS is damaged.
Executes 100% perfect waterproof work.
Detects any defects using a spark tester before being immersed in the water.
Semi-permanent service life (50 years) with excellent wear resistance and strong double compression strength as well as impact strength.
Easy and inexpensive maintenance (PE can be welded on damaged area).
Excellent hygiene, with no harmful substances due to no rust generated.
Ensures internal quality even with the inflow of foreign substances from pipe damage.
Can be constructed on stairs or any other complex areas, as it is LDPE (Low-density Polyethylene).
Can be selected from 2 products of attachment type.
Outstanding Procurement product
Weaknesses of Former Products and Technologies
Weakness of Epoxy Waterproof / Anti-corrosion
Contains Bisphenol A ingredient, an endocrine disruptor
Poor durability due to low bonding strength (3-5 years; easily detached by high-pressure cleaning during maintenance.
Requires dry construction method (cannot be done using wet method)
Unable to identify defective parts
Weakness of PE Sheet Lining
Can be uneven after construction due to high ductility of PE, and frequently breaks away from the structure due to contraction and expansion (coefficient of thermal expansion: 200) caused by water temperature and current in the reservoir (defects from material and external environmental factors)
Extremely difficult to identify the leak point (defects caused by contractual quality) due to defective welding, while there are many welding processes.
As it is a single panel, a water leak occurs immediately when the panel is damaged. (Defects caused by maintenance quality)
Negative influences on the structure in case of leaks due to no countermeasures for anti-corrosion of the structure (defects caused by maintenance quality).
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