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W often use GreMagor “State A” and “State B” descriptions in offers. What it means? Please see how our technology creates the future.
We offer several configurations of our system. We call these configurations as „A”, „B”, „C” and „D” configuration. GreMagor „State A“ is a construction itself, while GreMagor „State B“ is an ennobled „close-in” state. What are the details of these configuration, as well what is the „C” and „D” state one can read below in our detailed description.
Our construction may be set on different kinds of foundations, i.e. continuous footing, wall foundation, basement or slab foundation. Due to specific properties and characteristics of the ground we do not specify the cost of foundation in our offer, while it must be calculated separately. While our system enables to achieve high passive standard, the construction of foundation should be adapted to this standard or we can use our solution of passive floor in form of a passive ceiling over the foundation.
We prefer using our system of the GreMagor floor characterized with great factor of insulation (0,09 to 0,13 depending on height of the floor and type of insulation) and stable sitting on the foundation based in I-beams. It is also a solution economically justifiable.
Due to great values of insulation and stability of the sheathing our building system gives opportunities to be used in a low-cost and technically perfect passive house.
The GreMagor System consists of materials of the highest quality which are used mostly in high-end houses. These materials guarantee durability and stability of dimensions of elements which is normally hard to achieve in classic wood or concrete constructions.
The supporting structure: GreMagor State „A”
It concerns the supporting structure of the house. It is an offer mainly directed to construction companies, developers and carpentry business, which want to continue locally further works based on our low-cost and high-quality construction system. Precise production enables to build with preservation of accuracy of installation of all elements. Of course, there is always possibility to commission installation to our team (prices depend in different countries).
A Construction of the external wall
A1 basic module of the external wall GreMagor (width 320 mm)
A2 frames of GreMagor
B Internal walls
B1 basic internal module of GreMagor for the inner load-bearing wall (width 230 mm)
C partition walls
C1 Non-load-bearing wall GreMagor (width 90 mm)
D Roof (different types)
D1 construction plates 12mm
D2 I-beams (basic 300mm)
E Ceiling or floor
E1 based on I-beams, depending on construction load calculations
Close-in plus state (GreMagor State „B”)
Close-in state enables to do further installations inside the structure as well as installation of the technical infrastructure for the building. It contains closed in insulated sheathing of the building as well as windows (windows calculated separately). Close-in state may be made by our team in just few days. Just after this state one may install technical equipment (i.e. plumbing, electrical) and start the finishing works.
Passive floor of the GreMagor system
The construction of our passive floor contains of „Steico Joist” I-beams with height of mostly 300 mm (approx. 11,81 inches). The surface is totally insulated with an insulation material (i.e. mineral wool, cellulose or wood wool, vapor permeable is a must – depending on customer’s budget). Bottom and external border contains of wood-cement plates (Cetris Basic „tongue and groove” 12 mm). On the top-side are placed OSB-III construction plates (15 mm). On the OSB then iis placed insulating plate based on wood fiber (SteicoTherm 35mm or similar), which serves not only as the insulation but also as a soundproofing for the next layer of screed.
The external wall is heart of the GreMagor building system. We would like to present some details related with is elements as presented below.
External wall consists of bottom frame, external wall modules, double lintel and top frame. Wall is closed with the construction plate from the inside, while with a under-plaster plate from the outside. Thermal insulation fits approximately 95% of the whole volume of the wall.
Patented solution of the GreMagor modules fulfills the construction function in different axes. While connected to other modules it reinforces itself. Due to CNC-based accuracy of the production the wall is made with accuracy of approx. two-tenths of millimeter. That is whyit is possible to build fast and error-free construction, just like using the LEGOTM bricks. Customary for wooden construction skeletal support intergenerational exterior walls are segmented into elements in the system of walls due to both height and width. Standard module contains of 4 supports (Construction wood CE C24 class 40 x 90mm) and „the format” connecting from bottom and from top (used Pfleiderer MFP P5). The basic module has dimensions of 43 cm height and 41,7 cm length.
Of course, there are several types of modules, i.e. designated for corners, door, window jambs etc. The dimensions of support pillars may be be fit due to construction load requirements. Also there may be used wood of different type, like LVL (3-times stronger). An unique proposal for our system is the final freedom from thermal bridges for the construction. The construction wall has mostly the height of 2,70 m but may be increased/decreased adding or removing modules.
Bottom and top frame is made from a stable in terms of dimensions and high-quality veneered wood (height 60mm). Bottom frame is anchored into the foundation or surface or, as an alternative is connected with special screws. Lintels are also made of veneered wood. It causes that is is possible to use further modules up to 3,20 m height in terms of securing the living space and elegant, effective lighting. Among the lintels one may install box with shutters up to 240 mm total thickness.
Internal sheathing is made of OSB-III construction plates with thickness of 12 mm („feather-groove”), which are the proper sealing baffles. From the outside wall is closed with special under-plaster plates (i.e. Steico Protect, 40mm). They are stable and despite the relatively low wight (230kg per m3) have additional insulating properties. It is worth mentioning that this material characterizes with good absorption of heat, which is important to preserve heat in winter and preserve cold in summer days.
If the house is build along with the NF15/EUco 15 standard (passive standard) with controlled ventilation of rooms along with the construction of external walls, due to proper sealing of baffles, there will be made and additional internal wall with a place for the technical installations. This will create improvement of the heat transfer coefficient and sealing of the wall.
Roof, the same as the external walls, is constructed and adapted for the passive standard. Rafters of the roof contain of I-beams (300 mm) placed every 417 or 834 mm (depending on load calculations). Internal side is covered with OSB III (12mm) plate, which states a protective layer and secures the sealing of roof. Roof sheathing will be closed with insulation plate made of wood fibers (35mm) or alternatively with chipboard. Insulation of roof are mats of mineral fiber or cellulose or wood fiber. Skylights are able to be installed within the project.
Windows and doors
External windows and doors should fit the GreMagor system in terms of passive standard. In most cases these kind of windows (Uw<0,8) are based on three glass panes with profiles properly insulated (PVC, Alu or wood are available). Doors and windows are installed directly in the walls and covered with insulation. By this way, eliminated are thermal bridges around the jambs. Blinds may be powered with electricity. Windowsills mostly are made of XPS with thermal coefficient only 0,025W/mK. Doors also should be insulated due to passive standard (Uw<1,1).
Beside the acrylic plaster vapor permeable one may alternatively use ventilated facade of different types.
Insulating material made of mineral fiber (mostly stone wool or mineral wool) is the standard, economic material. Its density is mostly at 25-30kg/m3. What i most important, this is a vapor permeable material with good parameters of insulation. It is also a low-cost material.
Cellulose (mid-end material) is mostly injected under pressure. Advantage of this system is higher accuracy in fulfilling the construction. It has better acoustic and thermal insulation parameters. Price is higher than the mineral wool option.
The high-end insulating material from wood fiber has the highest density (50kg/m3) and higher heat capacity, which has higher influence in thermal inertia. It has very good acoustic insulation. It is the top-of-the-top material as an ecologic solution used in high-quality houses, classified as high-end. Due to our cooperation with producers of such materials we can achieve good prices for this material for our customers.
As a standard and most-easy option used are under-plaster plates made of wood fiber material. They are covered with acrylic, elastic vapor-permeable plaster. It is relatively cheap option. As an alternative there may be used ventilated facade. Within this option in alternative to under-plaster plate there is used fibreboard (MDF or heavy wood-fiber plate). On these boards are installed battens on which there are mounted facades. Lining and in the same time – protection – is secured by these facade boards. We often use for such option cement-bonded plates. They are reasonable in price, good looking and durable, not requiring maintenance. We can consult other types of facades.
The standard of a passive house
Outer sheathing is highly insulated. Coefficients of heat transmission oscillate: for the external wall (total thickness 41 cm with under-plaster late and insulation and additional internal layer) at the level of U=0,09W/(m2*K) while for the roof of U=0,12W/(m2*K). Required parameters for the EUco<15 standard (max. 15 kWh per square meter per year) are fully met living additional margin of reserve. There are also options to build lower in cost versions, preserving closely these coefficients, however giving up on several elements characteristic for the passive house (like controlled ventilation system with heat recovery). In such option it is defined as energy-saving houses (max. 40 kWh per square meter per year; mostly we fit in 22-25 kWh per square meter per year). There also other options to be used in passive or energy-saving houses, like using the modern, ecologic infra-red heating technology or heat pump, etc.
State C or B
We can arrange local partners for the additional installations and finishing works for the complete house in our technology. This is always a matter of individual consulting and terms and conditions of our realizations. State C is identified as State B with added technical equipment (i.e. plumbing, electrical, heating, ventilation) and it is calculated individuality. State D is defined as „ready to move in”, as it is also defined individually.