- The usage phase of buildings has the lowest environmental impact.
- Bituminous waterproofing membranes have a life expectancy of 35 years (according to EWA & BDA reports).
- Each application of a new bituminous waterproofing membrane on an existing membrane extends the lifespan of the waterproofing system by 35 years. This is a clear advantage of bituminous roofing membranes compared to other roofing materials.
- IKO Enertherm PIR insulation retains its properties over time. The IKO Enertherm insulation boards can remain in the system, or new panels can be placed on top of the existing waterproofing system to improve the insulation value.
- In summary, 35 years will be the minimum required lifespan before removing the waterproofing membranes from roofs, but this period can easily be extended thanks to the renovation capabilities of bituminous waterproofing membranes.