Hybrid insulation power for flat roofs – strong, safe, efficient: from a single source!
Fire protection meets thermal insulation
The hybrid insulation structure combines the best of both worlds:
The EVAROC® rock wool insulation board in the upper layer provides optimized fire protection, while the EVAPIR® insulation board made of rigid polyurethane foam underneath offers excellent thermal insulation.
This combination creates an innovative hybrid system from a single source with a slim profile, low weight, and good compressive strength—and all this as part of a complete roof structure.
For permanently secure and watertight roofs that impress in every respect—typical alwitra.
Benefits
• Slim roof structure with low heat transfer
• Excellent fire protection (from above)
• Temperature and dimensionally stable
• Complete roof structure from a single source
Whether for industrial buildings or flat roofs with PV systems, new buildings or renovations –
the hybrid roof structure impresses with its versatility and safety for every requirement and can be combined directly with EVATEC® Solar in the system.
Hybrid insulation structure – energy-efficient and easy to install
Our insulation materials are energy-efficient and easy to work with, and fit perfectly into the high-quality alwitra system.
Together with the EVALASTIC® and EVALON® roofing and sealing membranes, the low-fire-load EVAFOL SK vapor barrier, and the EVASTEEL® system components for drainage and ventilation, this creates a complete system from a single source. The EVATEC® Solar fastening system offers a secure and patented solution for the installation of PV systems.
Would you like to find out more? Your personal alwitra consultant will be happy to help!
Hybrid insulation build-up – all components from a single source:
EVAROC® Stone Wool
EVAROC® flat roof insulation boards made of stone wool offer more than reliable thermal insulation: they meet the requirements for preventive fire protection on all common substrates of single-layer, non-ventilated flat roofs. Their dual-layer characteristic with a highly compressed top layer makes them particularly resistant to mechanical loads.
Product benefits
- Highly compressed top layer
- Non-combustible, A1
- Melting point > 1000 °C
- Thermally insulating
- High compressive strength
- Vapour permeable
- Chemically neutral
- Dimensionally stable under temperature changes
- Resistant to vermin, rot and fungal attack
- Also available as tapered insulation board EVAROC® G with a 2% slope
alwitra system build-up with EVAROC®
EVAPIR® Polyurethane
EVAPIR® flat roof insulation boards made of rigid polyurethane foam
with aluminium multi-layer facings on both sides
impress with excellent insulation performance (WLS 023) at a low build-up height.
They are ideally suited for roofs with mechanically fastened waterproofing
or loose-laid systems with ballast.
The low bulk density results in reduced static load on the roof structure,
minimizes build-up height due to the lower insulation volume,
and facilitates transport and installation –
for cost-efficient insulation with strong performance.
Product benefits
- High thermal insulation performance
- Low build-up height, relatively low insulation weight
- High compressive strength
- Dimensionally and shape stable
- Suitable for used roof areas in accordance with DIN 18531 (e.g. photovoltaic systems)
- Also available as tapered insulation board EVAPIR® G with a 2% slope
alwitra system build-up with EVAPIR®
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