External masonry of KOFINAS (Passive masonry)

passive wall KOFINAS technology-prefabricated

You can select to see the details of the construction materials below:

Wooden Canadian armor
(OSB) factory LP
Natural mineral wool with ECOSE technology
(Category A1- Non-combustible material)
Reinforced support TORX screw
Thermal facade system with polystyrene
Metal corner bracket
Electrical pre-installation
Wooden spacers
Hydraulic installation
Plasterboard
Waterproofing membrane
controlled breathing
Wooden frame
Swedish pine
Wall base waterproofing

The latest generation of KOFINAS masonry is the top choice in ECOenergy passive building and achieves a reduction in energy consumption of 75%-80% compared to conventional masonry.

The leading company in the field is further developing its construction and offers the most robust construction in the field of prefabrication, tested by the National Technical University of Athens!

  • The wood used to make the frame is Swedish pine, planed and kiln-dried, class C24. It does not contain any chemical loads and is one of the top choices worldwide!
  • The connection is made using screws (TORX), which are placed robotically and thus we have zero loosening of the connection over time!
  • Each wall is closed on both sides with Canadian OSB from LP, boosting the mechanical strength of the wall. It also offers the highest impact resistance and allows us to hang loads on it without fear! 

MAXIMUM ALLOWABLE THERMAL TRANSMISSION COEFFICIENT U OF MASONRY BY CLIMATE ZONE

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(the lower the U-number of your climate zone (region), the more insulation is needed)

Prokataskeuasmena spitia KOFINAS SA, Energy apodosi, antiseismic, xamili katanalwsi, villa, oikologiki katoikia
Prokataskeuasmena spitia KOFINAS SA, Energy apodosi, antiseismic, xamili katanalwsi, villa, oikologiki katoikia

λ=0.13(W/mK)

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OSB  Category 3 with enormous mechanical properties. This material statically strengthens the masonry and enables us to fix any weight to any point on the wall, without the need for a special dowel. 

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λ=0.035(W/mK)

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The basic thermal insulation material of masonry. Natural mineral wool offers excellent thermal insulation, sound insulation and fire resistance (category A1-non-combustible materials). Raw materials for the production of mineral wool fiber are the rocks amphibolite, dolomite, or limestone and bauxite. Mineral wool is produced in an electric furnace. This method has advantages over the blast furnace method used to date, because dimensional uniformity is achieved in the produced fibers through the constantly controlled temperature of the melt and it has a minimal impact on the environment, unlike that of the blast furnace. 

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Connection of individual masonry sections using certified TORX screws (ΕΤΑ-11/0030), which offer a higher quality assembly, since they allow better control of the applied torque during screwing.

λ=0.037(W/mK)

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Prokataskeuasmena spitia KOFINAS SA, Energy apodosis, antiseismic, xamili katanalwsi, villa, oikologiki katoikiaProkataskeuasmena spitia KOFINAS SA, Energy apodosis, antiseismic, xamili katanalwsi, villa, oikologiki katoikia Thermal facade with self-extinguishing and waterproof polystyrene, highly impact resistant. The elastic silicone plaster prevents the appearance of cracks and makes the wall waterproof.

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With these metal corners, the structure is COMPLETELY connected to the reinforced concrete base. In this way, we have a “tied” structure with INCREASED MECHANICAL STRENGTH and IMPROVED ANTI-SEISMIC BEHAVIOR.

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Electrical pre-installation

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Complete electrical pre-installation inside the masonry from the factory with high quality materials.

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Wooden spacers

It is used to create cable and pipe routing.

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Hydraulic installation

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Complete plumbing installation inside the masonry is done by the factory with high-quality Rehau piping

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λ=0.21(W/mK)

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Certified gypsum board (EN520:2004+A1:2009 certification) from the Knauf company, 12.5 mm thick, which meets the German standard DIN 18180. They have natural gypsum certifications, as well as biological control.

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λ=0.3 W/(m*K)

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It provides insulation to the structure and protects against moisture, without allowing the appearance of water vapor that could gradually cause damage to the structure.

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The masonry timber, which is:

  • Swedish: which means it is very compact.
  • Pine: which means greater resistance to moisture.
  • Drying room: which means that the wood is baked for weeks and undergoes natural disinfestation rather than chemical (like green wood), while the humidity reaches the ideal level of 15-16% for residential construction.
  • Ecological: meaning that the timber does not contain chemical loads and that the policy of the Swedish Wood Industry contributes to the absorption of carbon dioxide.
  • Planed: which means that it has perfectly flat surfaces, which in combination with the factory connections, achieve perfect fit and zero joints in all the structural parts of the house.
  • FSC CoC: Which means that this wood comes from controlled forests in which for every tree that is cut down, 3 more are planted in its place. 
  • Class C24: which means that it has very high mechanical strength, demonstrating up to 80% higher load-bearing capacity than ordinary construction timber.

The company KOFINAS places special orders for the masonry base from Sweden.  

The waterproofing of the wall base is carried out using an impregnated beam, type NP5. The wood preservation category A and AB (Class A and Class B) of the timber we supply implies that the treatment is carried out in accordance with the penetration class NP5 which is formulated with the SS-EN 351-1 standard. This protects the base of the masonry from damage that could be caused by possible moisture in the base from the concrete, improving the durability of the residence.