External insulation – building envelopes

It is a fact that, the greek society, in recent years, has been plagued by the economic crisis. It is obvious that this situation has affected the consumer power of households. As if this were not enough, the heating oil prices, the wood and the electricity prices have risen, comparing to how it was before, while the benefits for heating are interrupted! Thereby complicating the situation even more for heating in the winter and cooling in the summer, making them look like luxury items. Our company, understanding the existing situation and supporting the greek economy by maintaining its production activity in Greece, offers specialized systems for thermal façade or else, external thermal insulation of buildings to guarantee maximum thermal insulation results. Choosing a system for the thermal façade of your building, you will see dramatic results in energy consumption both in winter and summer while saving quite some money. Here, you can obtain detailed information on our systems for thermal façade (exterior insulation) and also see the costs for the materials and works for a building thermal façade. Then the steps of applying the thermal façade to the building, follow.

External wall insulation application stages

1. We concrete normally. What it recommended is the placing the DUROSOL on the pilot plate, on the final plate, as well as the intermediate plates for better insulation and the avoidance of thermal bridges of the balcony. We act similarly, if we create the reinforcement frame.

2. We build the brick with columns and beams using single bricks (6% usable space saving and thermal insulation) or double external wall in case we prefer sliding instead of opening windows. Something similar happens with other construction methods such as plasteboards.

3. We place the pre-casings and sills and in order to continue the works on the thermal façade, we first complete all the electrical installations on the façades of the building as well as the roof work, where available.

4. Check the application surface. It should be clean, dry, relatively flat without any oil-grease or dust residues and no loose parts. Such things are observed quite often in old buildings without insulation. Optionally, we wash the concrete and the wall with water, in order to ensure that even the last dust residue or other substances have disappeared.


τοποθέτηση θερμομονωτκ΄ν πλακών στην θερμοπρόσοψη και αλφάδιασμα5.
We check the flatness and the implementation of the system and seek a variation of ± 1cm / 3m. Where there are higher variations, we use a different thickness of the DUROSOL insulating material. Thus we achieve perfect flatness of the surface, without using a thick layer of the basic coating material (FGL-Thermo III) (ready coloured plaster), achieving a thermal façade with high aesthetic results.

6. The application temperature should be 5°C – 35°C and the humidity should be <80%. In the summer time, it is good to interrupt the works before noon (around 11am) when the temperature is expected to rise over the application temperature range. It is recommended to predict the temperature so that, with the respective scheduling, no failures will occur (poor adhesion of the DUROSOL, splices in the coating, etc.) and to achieve the best possible external wall insulation.

7. We define the “high waterproofing” zone, which extends around the building at a height of 30cm above the ground. We need to use a sealant (tar or cementitious waterblock sealant) or a similar waterproofing sealant of each company). Also, after the final coating, it is recommended to use a drainage membrane (when the system has been used for thermal insulation in the basement).

8. We weigh the sides of the building and place the start guide within 30cm from the ground, by using plugs.

9. Mix the FGL-Thermo pasting material with water and mix for about 1 minute at 400 – 500 rpm. The mixture processing time is of about 1 hour.

10. We place the mixture perimetrically onto the DUROSOL and the center of the plate, seeking 40% coverage of the DUROSOL surface.

11. We paste the first coating of DUROSOL using the star guide as a spirit level and the next ones by crossing the joints, checking the flatness on each plate.

12. We watch over so that the first joints over the door or window openings are not formed in continuance of these tapers.

See more about the External Wall Insulation


θερμοπρόσοψη σε σημεία επαφής της θερμομονωτικής πλάκας με το κτήριο13. 
On the DUROSOL contact points (on the points where the thermal façade ends, that is) with the surfaces of other components (e.g. roof, concrete), we place polyurethane foam or special a special self-rising tape to avoid the thermal bridges and achieve the maximum thermal insulation of the building.

14. By the time the pasting works finish and after 48 hours, we smoothen any differences on the DUROSOL surfaces with the trowel, to achieve the perfect flatness.

15. Then we place 5-6 FGL-Dowel plugs / m² with an anchoring depth of 4cm. These will protect the façade from earthquakes and wind loads. Depending on the specifications of the pasting material, the FGL-Dowel plugs are placed over a certain height (6-10 meters), while the use of plugs is recommended throughout the system. In cases where we have loose backgrounds (e.g. old plasters), we prefer the FGL-Dowel plugs with a greater anchoring depth for extra stability of the thermal façade system.

16. We mix the basic FGL-Thermo III coating material with water, we glue the corner beads, the drips and the expansion joint profiles, where necessary, and then cover the whole surface of  the DUROSOL (3-5mm layer thickness).
θερμοπρόσοψη εξωτερική θερμομόνωση επικάλυψη με αστάρι

17. We apply the FGL-Mesh reinforcement fibreglass mesh, which should be on the outside third of the base layer thickness and be coated in the compounds within 10cm. We also place fibreglass mesh pieces in the corners of the openings for additional protection from cracking.

18. To create the perfect adhesion to the wall surface in order for it to perfectly welcome the layer of plaster which will follow, we apply a coating of the FGL-Primer primer on the surface.

πολυκατοικία σε τελικό στάδιο θερμοπροσοψης

19. After about 2-5 days and depending on the weather conditions, we apply the final coating (coloured plaster) which comes in the colour and the type of surface you have selected. The thickness of the topcoat is of 1-3mm, depending on the type of material you choose, so we achieve a perfect aesthetic result for the façade.

The high quality and elasticity of the materials, enable us to provide a 10year material warranty. A warranty for the façade as an application is given by each crew.

* In existing buildings, we start from step 4.

External insulation – Thermal Insulation Maintenance

Optionally: a painting, every 15-20 years, with acrylic paint.

For more details, instructions and general information about the external thermal insulation, the roof insulation, or the forged cement mortar, contact us. Ask for our offer for your own project.