Rooftop and terrace pools are becoming increasingly popular in residential, hospitality and refurbishment projects. However, these installations present unique technical challenges, particularly when the supporting structure has limited load-bearing capacity.
In these cases, lightweight pools offer an efficient construction solution, provided they incorporate a waterproofing system capable of ensuring complete watertightness, withstanding permanent immersion and performing reliably under demanding service conditions.
At Krypton Chemical, we develop complete waterproofing and protection systems based on advanced polyurea and polyurethane technologies, providing seamless, durable and high-performance solutions for both new-build and refurbishment projects.
The challenges of rooftop pools
Unlike conventional in-ground swimming pools, rooftop pools require systems that combine lightweight construction with the highest levels of safety and durability.
In addition to the weight of the water, the waterproofing system must withstand:
- Permanent hydrostatic pressure.
- Structural movement.
- Thermal expansion and contraction.
- Continuous exposure to chlorinated water.
- UV radiation and weathering.
- Intensive use and constant pedestrian traffic.
For these reasons, a seamless waterproofing membrane that eliminates joints and weak points is essential to guarantee watertightness throughout the service life of the pool.
Why choose a polyurea waterproofing system for swimming pools?
Spray-applied polyurea has become one of the most effective waterproofing solutions for hydraulic structures thanks to its outstanding mechanical and chemical resistance, as well as its ability to form completely seamless membranes.
Compared with traditional waterproofing systems, polyurea offers significant advantages:
- Seamless membrane with no joints or overlaps.
- Extremely fast curing.
- Excellent adhesion to a wide variety of substrates.
- Outstanding crack-bridging capability.
- High elasticity.
- Excellent chemical resistance to treated water.
- Exceptional performance under permanent immersion.
- Long service life with minimal maintenance.
These characteristics make polyurea the ideal technology for rooftop pools, where long-term reliability is essential.
Krypton Chemical system for lightweight rooftop pools
For this type of application, Krypton Chemical offers a multi-layer waterproofing system specifically designed to protect lightweight structures made from foamed materials or rigid lightweight panels.
Each component within the system performs a specific function to ensure the overall performance of the installation.
Seamless waterproofing with POLYUREA RAYSTON
The pool shell is waterproofed using POLYUREA RAYSTON, a pure polyurea membrane applied by hot spray technology.
Its solvent-free formulation creates a high-performance seamless membrane capable of ensuring complete watertightness, even under permanent immersion.
Final protection with PAINTCHLORE 2K
The system is completed with PAINTCHLORE 2K, a high-performance polyurethane coating specifically designed for continuous contact with treated water.
This finishing layer provides:
- Outstanding resistance to chlorinated water.
- Excellent chemical resistance.
- High abrasion resistance.
- Excellent UV stability.
- Additional protection for the waterproofing membrane.
Thanks to this protective finish, the system maintains its performance over extended periods, even under the most demanding service conditions.
Applications
The system is particularly suitable for:
- Lightweight rooftop pools.
- Roof deck swimming pools.
- Penthouse pools.
- Residential swimming pools.
- Hotel swimming pools.
- Spas and wellness facilities.
- Designer pools.
- Swimming pool refurbishment projects.
Waterproofing solutions for projects
Every project presents specific requirements depending on the structure, substrate, geometry and service conditions. For this reason, Krypton Chemical develops complete waterproofing systems combining advanced polyurea and polyurethane technologies to deliver tailored solutions for each application.
Our systems provide seamless waterproofing, outstanding chemical resistance and long-term durability, ensuring maximum performance for both conventional swimming pools and innovative construction solutions such as lightweight rooftop and terrace pools.
Because as architecture evolves and presents new challenges, waterproofing solutions must evolve too—delivering safety, durability and outstanding long-term performance.
