DEPKA advantages
Up to 40% energy savings
The air you heat in winter and cool in summer stays in the room for longer. Your boiler and air conditioning run less, and your bills come down.
Where the savings come from
Part of the energy you spend on heating and cooling is lost through the walls. The fibrous structure of DEPKA cotton wall plaster helps reduce this loss; we explain how it works on the thermal insulation page.
The less heat you lose, the faster your boiler and air conditioning reach the temperature you want, and the shorter they run. The result is energy savings of up to 40% on heating and cooling.
This figure applies to the standard application thickness of 1.5 mm.
How to get more from it
Start with external walls
Walls that face outside are the surfaces that lose the most heat.
Cover the ceiling too
Cotton plaster can also be applied to ceilings, helping to reduce heat loss towards the roof and upper floors.
Apply a thicker coat
1.5 mm is standard; a thicker application increases the insulating effect.
Consider the facade
In uninsulated buildings, plan it alongside facade solutions.
Explore →The savings depend on the building's insulation, the orientation of the facade, the windows and doors, and your heating and cooling habits, so results are not the same in every space. Talk to us about your project.
About energy savings
How much energy can cotton plaster save?
It can save up to 40% on heating and cooling. The figure applies to the standard 1.5 mm thickness and varies with the building's insulation and how the space is used.
Are thermal insulation and energy saving the same thing?
Thermal insulation slows down the rate at which heat passes through the wall; energy saving is the result you see on your bill. For details, see the thermal insulation page.
How many packs do I need for a room?
1 kg of product covers 3.5–4 m², so a 2 kg pack covers about 7–8 m². Enter your wall measurements in the coverage calculator to work out what you need.
