Energy Class Houses A+

According to the legislation L.3661 / 08 and the establishment of the energy categorization mechanism of the constructions based on KENAK, all the constructions whose building permit was issued after 2010 must issue a certificate of energy classes based on the study of KENAK. All constructions fall into the following categories A +, A, B +, B, C, D, E, F, G where from category C and below are considered as unacceptable constructions.

The annual energy consumption of a construction is calculated on the basis of KENAK. Homes belonging to energy class A + can achieve energy savings of up to 70% compared to a construction of energy class B.

Below are comparative data on the energy efficiency of structures.

  • Energy class A + 70% lower consumption compared to B
  • Energy class A 50% – 70% lower consumption compared to B
  • Energy class B + 25% – 50% lower consumption compared to B
  • Energy class B up to 25% lower consumption than B

smartbuilding after years of studies, respect for the environment and guided by customer satisfaction, innovating in metal structures and metal houses presents the series smartplus that offers customers the energy class A + houses that provide lower energy consumption up to 70% compared to the lowest energy efficient class B.

The achievement of energy classes A + that implies energy savings is achieved based on many years of studies and collaborations with suppliers of materials that offer high energy efficiency indicators.

Below are the materials with which the metal houses of the smartplus series are equipped.

Μηδενικής Κατανάλωσης Κατασκευές


Laminated and double insulated with expanded polystyrene 10cm thick and λ = 0.036w / Mk, expanded polystyrene coating 5-6cm thick and λ = 0.036w / Mk. A total of 15-16cm insulation as prevention and avoidance of thermal bridges.

Μηδενικής Κατανάλωσης Κατασκευές 1


Dry construction with external thermal facade. Cement board, stone wool and double plasterboard with a total thickness of 25-26cm.

Μηδενικής Κατανάλωσης Κατασκευές 2


Double glazing, u = 1.1 W / m2k.

Μηδενικής Κατανάλωσης Κατασκευές 4


Cooling-heating energy class A.

Μηδενικής Κατανάλωσης Κατασκευές 5


Solar hot water heater.

Μηδενικής Κατανάλωσης Κατασκευές 3


Roof insulation with extruded polystyrene, asphalt, cleaning concrete, waterproofing.


  • High energy efficiency of a home
  • Low cost of cooling-heating and hot water use
  • High thermal insulation capacity of exterior walls due to the external thermal facade
  • Bioclimatic housing design

In order to achieve the rise of our home from the lowest permissible energy class B to A +, the correct design and orientation of the building is not enough. The correct application and care of the insulation of the metal frame as well as the use of energy efficient materials, such as the low consumption cooling-heating equipment and hot water.