Heating is one of the biggest expenses in a private home. At the same time, up to 40% of heat loss occurs through exterior walls. A properly designed facade system with insulation and a reliable finishing layer has a direct impact on heat retention, indoor comfort, and monthly heating bills. In this article, we analyze real figures, practical examples, and the role of facade finishing in overall energy efficiency.
Where Heat Is Lost in a House
The main sources of heat loss are:
exterior walls — up to 40%
roof — 20–25%
windows and doors — 15–25%
floors and basement — up to 10%
This is why facade insulation delivers the most noticeable reduction in heating costs.
Why Insulation Alone Is Not Enough
Many homeowners believe that simply installing EPS or mineral wool is sufficient. In practice, this is a common mistake.
If the finishing layer:
cracks,
allows moisture penetration,
peels off,
creates thermal bridges,
— the effectiveness of insulation drops significantly.
A facade works as a complete system, where all layers matter:
insulation,
reinforced base layer,
finishing cladding.
The Role of the Finishing Layer in Energy Efficiency
The finishing facade layer performs several critical functions:
protects insulation from moisture and wind
stabilizes wall temperature
reduces air infiltration
extends the lifespan of the facade system
Flexible stone tiles by KORDEKO adhere tightly to the surface, eliminate gaps, and help reduce heat loss even further.
Real Numbers: How Much Can You Save?
Practical data shows:
insulated facades reduce wall heat loss by 30–50%
average annual heating savings reach 20–35%
in non-insulated houses, heating costs can be 2–3 times higher