Figure 1
Overview of the methodological workflow.
Figure 2
Distribution of product quantities per building footprint area (BFA) for windows in preschools in the three regions.
Figure 3
Distribution of product quantities per building footprint area (BFA) for windows in multifamily buildings in the three regions.
Table 1
Analysis of variance (ANOVA) indicating significant differences between means.
| BUILDING TYPE | PRODUCT | P-VALUE (ANOVA) | POST-HOC (METHOD) | RESULT |
|---|---|---|---|---|
| Multifamily buildings | Wood, windows | 0.04 | Tukey–Kramer (approximately homogeneity of variance, unequal sample sizes, p = 0.05) | Significant difference between the means of Greater Gothenburg and Stockholm |
| Preschool | Water, radiators | 0.04 | Games–Howell (significant difference in variance between group means, three groups, p = 0.05) | No significant difference between region means |
| Preschool | Clay tiles, roofing | 0.02 | Student’s t-test (only two regions with more than one value, p = 0.05) | Significant difference between the means of Stockholm and Greater Gothenburg |
| Preschool | Gypsum boards | 0.01 | Games–Howell | Significant difference between the means of Umeå and Greater Gothenburg |
| Multifamily buildings | Concrete, framework | 0.03 | Games–Howell | No significant difference in the means between any regions |
Table 2
Aggregated key performance indicators (KPIs) for preschools and multifamily buildings across all three regions, suggested as national KPIs.
| PRODUCT | PRESCHOOLS, KPI1/KPI2 | MULTIFAMILY BUILDINGS, KP1/KP2 | |
|---|---|---|---|
| Windows | Wood | 0.09/0.04 | No national KPI suggested |
| Wood/aluminium | 0.11/0.01 | 0.13/0.004 | |
| Aluminium | 0.09/0.003 | 0.06/0.002 | |
| Undefined | 0.10/0.04 | 0.14/0.06 | |
| Radiators | Water | 0.09/0.05 | 0.18/0.06 |
| Electricity | 0.11/0.02 | 0.24/0.02 | |
| Undefined | 0.08/0.01 | 0.12/0.003 | |
| Facade | Wood | 0.55/0.42 | 1.70/0.39 |
| Brick | 0.40/0.02 | 1.40/0.20 | |
| Mineral-based boards | 0.44/0.04 | 1.40/0.36 | |
| Treated wood | 0.21/0.01 | n.a. | |
| Plaster | 0.19/0.003 | 1.60/0.42 | |
| Sheet metal | n.a. | 4.20/0.36 | |
| Roofing | Clay tile | No national KPI suggested | 1.00/0.34 |
| Concrete tile | 1.30/0.18 | n.a. | |
| Roofing felt | 1.00/0.39 | 0.99/0.14 | |
| Sheet metal | 1.10/0.27 | 1.20/0.36 | |
| Eternita | 0.79/0.03 | 0.03/0.001 | |
| Frameworks | Timber | 10.70/7.10 | 14.90/7.90 |
| Concrete | 884/74.90 | 2,129/912 | |
| Lightweight concrete | 206/7.0 | 363/104 | |
| Treated timber | 4.80/0.25 | n.a. | |
| Brick | n.a. | 834/71.5 | |
| Steel | n.a. | 90.00/5.10 | |
| Gypsum boards | No national KPI suggested | 57.10/11.40 | |
[i] Note: KPI1 refers to the presence-based KPI; KPI2 refers to the stock-based KPI. n.a. = no data available.
aEternit roofing is a brand of durable, corrugated fibre-cement roofing sheets and slates.