Tips and tricks from an architect


let´s inspire you for decoration or see how to do

some works for your home.








Homestaging tips

There are various little tips and tricks to make your property more attractive on photos and during viewings.

Only few or no objekts should be placed on shelves.

The rooms should not be crowded with furniture.

The balcony, the lawn and the garden as a whole should be well maintained.

A pot with blooming flowers in the entrance area is a wonderful calling card and provides a good first impression.





Energy Efficient Home Project

Key Invest offers consultancy services for energy efficient home construction in Bodrum.

The construction documentation of an energy efficient home that we built in Akbuk, a beautiful little fishing village on the Turkish Aegean coast, is available below for everyone interested in this subject. We believe that it is more important than ever to ensure energy conservation, to develop environmentally friendly projects and to create pleasant living spaces.


Project: Energy efficient home:


This project was developed and implemented in Didim-Akbuk for a Swiss family relocating in this area. The family, who told us they love mediterranean architecture, had 3 conditions related to the project:


1st Condition: Mediterranean architecture had to be combined with modern and contemporary technology. 

2nd Condition: It was important to avoid damp walls, leaking roof and draughty windows that are common in Turkey. The sound of footsteps on the upper floor were not be heard downstairs and we had to create a house with high comfort. The temperature had to be homogeneous in all rooms.

3rd Condition: The energy consumption of the house had to be very low and also environment friendly. Furthermore, the energy costs had to be kept at a minimum.

The solution we suggested was to build an “Energy Efficient Home”, which has become a standard in many European countries such as Germany and Switzerland.

This house was designed in a way that building physics could be affected in the most positive way while considering aspects like direction (view), sun, shadow and wind. The ideal in terms of building physics is that the surface area to volume ratio is low, which is not very easy to achieve in mediterranean architecture. The only way to close the deficit is a smart architectural design and good insulation. Pumice was used in the walls and the entire building was coated with thermal insulation material. Besides, sound insulation measures were taken in the house and  waterproofing was made. In addition, adhesive tape was placed on the windows and doors and plaster was applied on the casements to ensure airtightness. This was the first part of the concept. The second part included heating, cooling and ventilation. Heating and cooling was provided with the Toshiba S MMS VRF system, which has a low energy consumption. Ventilation was ensured with a ventilation system combined with a heat exchanger to recycle the already heated or cooled air inside.




Thermal and sound insulation, waterproofing of the energy efficient home:


Roof: 10 cm rockwool was used on the concrete under the roof. Rockwool is a good insulation material in terms of both thermal and sound insulation. In addition to that, it maintains its insulating properties even when it gets wet and dries. For additional waterproofing, Delta Maxx membranes were used under the roof tiles. 

Delta Maxx roof membrane provides not only waterproofing, but is also breathable and allows moisture and vapor under the roof to pass off.







On the roof, rockwool was spread over the concrete and XPS foam was placed on the edges in order to avoid thermal bridges.




Watertight but breathable Delta Maxx membrane was spread under the roof tiles.

The walls of the Energy Efficient Home:


Pumice has a better sound insulation due to its weight, so pumice was used in the walls instead of Ytong bricks to support the thermal insulation in the walls. To avoid any thermal bridges, the entire walls, sub-terraces, columns and shear walls were covered with EPS foam on the outside. The surfaces were plastered after spreading plaster mesh on the foam. Finally, a layer of YKS decorative plaster was applied. This plaster is also extremely waterproof. With the selection of this type of material, sound and thermal insulation as well as waterproofing was ensured.







EPS foam boards are fixed with a special glue and then anchored onto the walls.




Balconies of the Energy Efficient Home:

To provide sound and thermal insulation, the balconies were completely covered with EPS foam, i.e. underneath the balconies as well as under the screed. Under-screed insulation has been made in the entire building to avoid sound propagation. Silicone was applied to the joints between walls and floors in order to eliminate contact between both. 


Railing and balcony

Floor preliminary work done.


Jacketing completely underneath, on edges and sides of balconies.

Terraces of the Energy Efficient Home:

Thermal and sound insulation was provided by covering the entire terrace with under-screed EPS foam.  
As on the balconies, the contact between walls and floor at the joints was eliminated with silicone. 
PE foil placed over visible foam at terrace edges and 1 cm blanket insulation to break sound waves. After floor tiles are laid, PE foil was cut at the edges and base tiles were placed.  



Thermal and sound insulation on the concrete of the ground floor and 1st floor of the Energy Efficient Home:


5 cm EPS foam was spread under the screed of the entire ground floor to eliminate thermal bridges and sound propagation. 
Again, the contact between walls and floor at the joints was cut off with silicone. 



Floors of the upper floor: 


2 cm EPS foam was spread under the screed of the entire upper floor to eliminate sound propagation. Again, the contact between walls and floor at the joints was cut off with silicone.




EPS foam placed ontop of the concrete and insulation blanket eliminating sound bridges underneath. 


Windows of the Energy Efficient Home:

As all the other parts, jonery and glasses are a vital part of this concept. Egepen Zendow casement series with 70 mm profile size and 5 chambers have been used for maximum thermal insulation as well as water- and soundproofing. According to the producer's presentation, PVC is an insulator by its structure. It is an ideal material for achieving best results in thermal insulation. Furthermore, the 5-chamber system of Zendow offers excellent performance in thermal insulation.  
Soundproofing performance
PVC is the best insulator when it comes to thermal insulation as well as soundproofing. However, Zendow shows additional performance in this point, too. Through its 70mm profile design, it offers the possibility to use soundproof glazing up to a thickness of 33 mm. Furthermore, its TPE sealing system ensures perfect tightness as it provides a maximum contact surface to the fixed case frame. Its U-value of 1 identifies the "positive" thermal features comprising of the average rates of thermal transfer, moisture and surface heat transfer of the building. 



Water and wind tightness of the Energy Efficient home:

The universal dual-functional sealing system has been designed to provide both the airtightness of the glazing and perfect closing of the window. With its optimal geometry, this dual-functional sealing system has been adapted to the profile concept. The seal, which is designed of high-quality material and readily produced on-profile in the manufactory, also increases the installation quality.  

In order to support best sound and thermal insulation, double glazing of the SISECAM Comfort series with Argon gas was used in the windows. In addition, rough openings were plastered before placing the frames and the edges between the walls and the casements were sealed with a special tape to prevent air leakage. In order to prevent thermal bridges on the windowsills too, they were mounted as two parts, being one in the inside and one in the outside with rockwool in between. 



Plaster on ESP foam placed on walls and casements. 



Argon gas certificates of glazing

Ground-contacting walls in the Energy Efficient Home:

The space under the building is being used as unheated storage space. Therefore, insulation on the ground floor was provided with 5cm EPS foam spread under the screed to avoid thermal bridges, as described above under "Thermal and sound insulation on the concrete of the ground floor and 1st floor of the Energy Efficient Home"
First, levelling plaster was applied to the ground-contacting sections of the shear concrete walls of the storage space, then they were coated with bituminous paint and two layers of 3 mm waterproofing membrane (P-300) were attached.  
5 cm EPS foam was spread for protection as well as for insulation purposes.
To support waterproofing and to avoid water accumulation around the building, drainpipes were placed into a bed of stone chips. 
Additionally, a 15 cm stone chips layer was placed under the base to avoid capillary effect. Many parts around the base were also backfilled with stone chips size #5. 




Levelling plaster and 3 layers of P-300 on film coat



Technical equipment of the Energy Efficient Home:


To complete the concept in this type of energy saving houses, a ventilation system with heat exchanger should be used. As energy has been consumed for the heated or cooled air inside, just opening a window for ventilation would let this energy escape. A ventilation system with heat exchanger keeps most of this energy. As a result, such a system can be an important means to save energy. 



Heating and Cooling

Heating and cooling of this house is provided with the
Toshiba S MMS VRF Central Air Conditioner, ensuring low energy costs.