Semi-detached building - Katowice (BIPLAN report)
Two-sided IzolPlus coating (Termo-Fasada outside, Termo-Wnętrze inside) on a 0.4 m brick wall without insulation. Comparative gas consumption measurement over two heating seasons. Audit by Dr Eng. Grzegorz Kaczmarzyk.
Project Metrics
Building
Semi-detached building with usable floor area of 110 m² in Katowice. 0.4 m brick wall, no insulation, double box windows (not replaced). Auditor: Dr Eng. Grzegorz Kaczmarzyk, Doradztwo Inwestycyjne i Projektowe BIPLAN, report dated 6 October 2014.
Method
Two-sided IzolPlus coating (Termo-Fasada outside, Termo-Wnętrze inside). Comparative gas consumption measurement over two heating seasons: 2012/2013 (without coating) vs 2013/2014 (with coating).
Full BIPLAN measurements
| Item | Value |
|---|---|
| Usable floor area | 110 m² (excluding basements) |
| External wall area | 174.5 m² |
| Structure | 0.4 m brick, no insulation |
| Wall U-value before → after | 0.491 → 0.22 W/m²K |
| λ of IzolPlus compounds (bench measurement) | 0.03185 W/m·K |
| Polystyrene equivalent | 11.53 cm (λ 0.046 W/m·K) |
| Coating cost (facade + interior) | PLN 6,400 |
| Cost of polystyrene for the same effect | PLN 20,000-22,000 (2014 prices) |
Thermal effect equivalent to 11.53 cm of polystyrene, at approximately 4x lower cost. Gas consumption reduction of 15-25% on an average daily basis.
"IzolPlus compounds show very high thermal insulation performance expressed by a low thermal conductivity coefficient, positioned significantly below the values for typical thermal insulation materials."
Dr Eng. Grzegorz Kaczmarzyk, BIPLAN - report, Katowice, 6 October 2014
Polystyrene prices from 2014 - historical values from the BIPLAN report.