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Hi-Green Sheet
HYBRID WATERPROOFING

Hi-Green Sheet

Patent No. 10-2929004

As Korea's first patented exposed hybrid waterproofing method utilizing a 'Velcro' fastening system, it seamlessly combines high-performance asphalt waterproofing sheets with artificial turf without adhesives. This innovative solution ensures perfect leak prevention while drastically reducing construction time and maximizing economic efficiency.

  • Eliminates adhesive and curing processes, completing construction in just 1 day (1/4 the time of conventional methods)
  • Proven to reduce summer cooling energy by 11.7% with a maximum 1.8℃ heat insulation effect
  • Extends the lifespan of the underlying waterproofing layer by over 10 years with excellent UV blocking
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Smart Green Technology Elevating Building Value

Hi-Green Sheet is a hybrid finishing material that covers a robust waterproofing layer—meeting KS standards—with eco-friendly artificial turf boasting both aesthetic appeal and durability. It transforms a simple rooftop into a green garden or leisure space all year round, maximizing the building's utility and value.

In particular, it completely overcomes the disadvantages of conventional urethane coating waterproofing and complex multi-layered construction. As a safe method requiring no open flames and an eco-friendly material generating less waste, it can be applied to residential facilities, government offices, schools, and commercial buildings under all weather conditions.

  • Overwhelming Economic Efficiency: Innovatively reduces overall construction costs by 15-20% through a simplified construction process (from 6 steps to 4 steps).
  • Proven Light Fastness: Maintains color and quality for over 10 years using artificial turf that has passed FIFA and KS standard tests.
  • Innovation in Maintenance: Attached with Velcro instead of glue, allowing for immediate repair by simply detaching the turf in the specific area if a leak occurs.
HGS Detail View

4 Core Material Systems of Hi-Green Sheet

Material Name Description
Urethane Primer Forms a strong adhesion between the concrete base and the waterproofing sheet (Primer)
Modified Asphalt Waterproofing Sheet A 3.0mm-thick high-performance sheet meeting KS F 4917 standards, with Velcro (crimp) on top
Urethane Sealant Sealing reinforcement that fundamentally blocks leaks at corners, vertical surfaces, and sheet joints
Eco-friendly Artificial Turf High-quality top finishing material with no heavy metals detected, passing the KS F 3888-1 standard

Ultra-Simple 4-Step Construction Process (Completed in 1-2 Days)

Construction Step Details
STEP 1 Surface Preparation Removal of concrete debris and confirmation of surface moisture content (8% or less)
STEP 2 Primer & Corner Reinforcement Applying primer followed by tight sealant application on corners and vulnerable vertical areas
STEP 3 Waterproofing Sheet Installation Rolling and attaching seamlessly edge-to-edge with the Velcro side facing upwards
STEP 4 Artificial Turf Installation Arranging the turf so joints don't overlap with the sheet joints, then pressing onto the Velcro

Specifications

Item Details
Lower Waterproofing Layer Modified Asphalt Waterproofing Sheet (KS F 4917 Type A Class 1 / Thickness 3.0mm)
Upper Finishing Layer UV-blocking coated eco-friendly artificial turf (KS F 3888-1 B-3 Grade)
Fastening Method PE material polyurethane crimp (Patented adhesive-free Velcro method)
Expected Effects Up to 1.8℃ heat insulation, waterproofing lifespan extended by 10 years, 11.7% reduction in cooling energy