Savings

Big savings can be achieved through cutback’s in costs of energy, roofing maintenance, reroofing and performance loss by improving labour productivity.

Longer life span

The roofing is no longer heated to extreme temperatures since there is no direct contact with the radiation of the sun. The sun can cause temperature rises on roofing to 80º Celsius or more. Exposure to changing weather conditions, such as extremes in temperatures, causes roofing to deteriorate rapidly, which causes a shorter life span of the roofing. This applies in particular to bitumen roofing. The Roofclix® system eliminates these influences to a large extent and thus provides a much longer life span to the underlying roofing. This results
in lower maintenance costs (leaks, etc) and depending on the type of materials, the life span of the underlying roofing can be prolonged by 30 years or more.

Energy savings

Energy savings depend on the current state of the building and any measures already taken. Measures on test roofs result in an expected return on investment time of 3 to 5 years.

Labour productivity of personnel

The data for the calculations are derived from Arbodienst (Dutch Safety Health and Welfare Service for Personnel) and GGD (Dutch Local Healthcare Services). As an example, take an office building. Assuming 13 m2 workplace per person (source Arbodienst), the ideal work temperature is between 21° and 23° Celsius (source GGD). At 25° Celsius and beyond, people start to experience loss of concentration and performance. According to experts, we have to cool buildings two-hundred days per year on average (6.5 months). We have used this data as a starting point since it matches the new goal in cooling for the calculation of the EPN (energy performance norm). This data can all be measured.

We assume an acute and structural thermal problem where the heat penetrates noticeably through the roof and/or internal heat cannot escape, and the temperature often rises above 25° Celsius. From this temperature people lose approximately 15% of their concentration per degree (source GGD). As a manager you may notice this, but since you are warm yourself you tolerate it. Perhaps you have contemplated the purchase of a central air conditioning system but the high cost of purchase and potential recurring costs has stopped you.

For this calculation we assume a gross salary for an employeeof € 2.000, per month.

The calculation is as follows: 1 person earns € 2.000 gross. At 1 degree above 25°C, 15% of concentration and/or performance is lost. Loss of concentration can also result in more (expensive) errors. This results in € 2.000 x € 0,15 = € 300, gross loss per person per month. Multiplied by 6.5 months this is € 1.950, per person per year. This means a loss of approximately 1 gross monthly salary per employee per degree per year. Roofclix® elements Labour productivity of personnel: can in this case mean a saving of € 150 per degree over 25 degrees Celsius per m2 per year.

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