PIR flat roof insulation & fleece-reinforced PURelastik liquid plastic
The combination of PIR flat roof insulation and fleece-reinforced PURelastik liquid plastic offers a long-lasting flat roof restoration through low installation heights and seamless waterproofing. While PIR boards provide excellent insulation values (thermal conductivity Lambda value (λ) of 0.022 W/(mK)) at minimal thickness, the liquid-applied PURelastik with fleece reinforcement ensures a crack-bridging, UV-resistant, and homogeneous surface, especially at complex details.
The restoration process includes substrate preparation, installation of the vapor barrier, precise PIR placement, and full-surface sealing with PURelastik liquid plastic & fleece. This system solution guarantees compliance with GEG (future GMG) standards, high compressive strength, and a low-maintenance, durable roof structure.
Key advantages of
PIR flat roof insulation:
Low build-up height: Thanks to a thermal conductivity (λ) of 0.022 to 0.026 W/(mK), PIR boards can be up to 40% thinner than polystyrene (EPS) or rock wool while providing the same insulation performance.
High compressive strength: The boards are highly stable, making them ideal for accessible flat roofs or roof terraces.
Heat resistance: PIR can briefly withstand high temperatures (e.g., during the torch-on application of bitumen membranes) of up to 250 °C.
Moisture resistant: The material absorbs almost no water and is resistant to rot.
Service Description:
PIR flat roof insulation & fleece-reinforced PURelastik liquid plastic
After substrate preparation: Installation of the PIRflat roof insulation
Professional installation of PIR rigid foam insulation boards (polyisocyanurate) on the prepared, level, and clean substrate. The boards are installed in a staggered pattern to avoid cross joints, with tightly butted edges to ensure gap-free thermal insulation.
Bonding and mechanical fastening of the
PIR insulation boards
Secure fixation of high-performance PIR insulation using a combined fastening method: The boards are bonded in a system-compliant manner for temporary fixation and to prevent airflow underneath, then mechanically screw-fastened according to structural requirements.
Fully insulated flat roof with PIR flat roof insulation
Creation of a high-efficiency flat roof insulation package using high-performance PIR insulation materials. Thanks to its extremely low thermal conductivity (WLS 022), the completed system offers maximum energy efficiency with minimal installation height. The result is a compression-resistant, dimensionally stable, and thermal-bridge-free insulation layer that forms the perfect foundation for the final waterproofing layer.
Beginning the seamless waterproofing with PURelastik liquid plastic & fleece
Initiating the permanently elastic surface sealing within the system structure: The first layer of PURelastik liquid plastic is applied to the prepared PIR insulation. A special reinforcement fleece is then embedded across the entire surface, ensuring it is free of wrinkles. By subsequently saturating the fleece with an additional layer of PURelastik, a seamless, crack-bridging membrane is created.
PIR flat roof insulation and seamless PURelastik waterproofing
Successful completion of the energy-efficient roof restoration through the combination of high-efficiency PIR insulation and a full-surface liquid plastic waterproofing. The restored roof system now combines maximum thermal insulation with a permanently weather-resistant protective layer.
Completion of the roof restoration:
PIR flat roof insulation & PURelastik
By using slim PIR insulation boards, the building's U-value was massively optimized, while the final fleece-reinforced PURelastik coating creates a jointless surface. The restoration provides long-term security, prevents energy loss, and ensures a low-maintenance, permanently waterproof roof structure through the seamless application process.
Let’s plan your project with precision! To provide you with an exact quote for your high-performance PIR insulation with liquid applied waterproofing, we need a few details. Use our digital questionnaire for data collection – simple, fast, and secure.
📞 Phone: +49 (0)163 79 25 730
✉️ Email: info@pur-protect.de
📍 Area of application: Europe-wide
Coating of PIR flat roof insulation with fleece-reinforced PURelastik in time-lapse
