All the benefits at a glance

Improved thermal insulation: 

If the so-called heat transfer coefficient (U-value) of the box was previously approx. 5 W/(m²K) (watts per square metre per kelvin), the insulation work can reduce this to around 0.6 W/(m²K). This represents a thermal improvement of around 90 per cent for the roller shutter box.

Lower heating costs: 

If all roller shutter boxes are insulated, this measure can reduce heating costs throughout the house by up to 5 per cent.

Further benefits:

• Comfort is enhanced due to higher temperatures on the inside of the external walls
• Draughts are eliminated
• Mould growth is prevented, as the inside surfaces of the roller shutter boxes become warmer and therefore drier
• CO₂ emissions are reduced
• You can also insulate roller shutter boxes yourself
• The work involved is minimal

Time required: one afternoon per roller shutter box (considerably less from the 10th onwards), depending on your personal DIY skills

Costs/cost-effectiveness: 

Depending on the level of difficulty and the specific tradesmen’s services required, the cost is around €100 per insulated roller shutter box. This corresponds to a payback period of between 4 and 6 years. If you carry out the work yourself, the measure pays for itself in less than a year!

Funding: 

This measure is not eligible for separate funding (unless there is a relevant local authority funding scheme).

Can I insulate them myself?

Yes, insulating roller shutter boxes is a typical DIY project and can be carried out bit by bit on your own. This reduces the cost to a maximum of €15 per roller shutter box, as only material costs are incurred.