Construction system

DA-MA Haus low energy and passive timber frame houses

The development in construction materials has been orienting increasingly towards the use of natural and ecological materials. The production of such materials like wood and wood fibre, cellulose, hemp, clay roofing tiles etc. does not burden the environment, which also applies to their disposal. Considering the findings in construction biology on the compatibility of diverse materials we have developed an advanced construction technique that is quick, economical and ecological. Modern buildings enable healthy living, low energy consumption as well as earthquake and fire resistance, which results in a higher quality of living.

DA MA Haus building design comprises:

  • healthy living environment
  • well-being
  • cost-efficiency
  • construction according to customer's wishes
  • high degree of self-sufficiency

Main features of the construction system:

  1. 1. Diffusion Open

    The houses are diffusion-open, meaning that the walls and the roof are constructed so as to enable the exchange of vapour in the room with the environment and vice versa. It is of key importance to use vapour barriers instead of vapour locks. The house is thus enabled to “breathe” as excess moisture is eliminated from the room when the air is moist and returned when it's dry. By making the house breathe we ensure a nice living climate, which results in a sense of comfort.

  2. 2. Structural strength

    When designing a house, great attention is paid to the structure whose appropriate thickness increases the structural strength, at the same time enabling a thicker layer of insulation. The system of timber frame building as such is based on several centuries of experience in wood construction. However, modern equipment has enabled us to process the details extremely precisely and fast by using CNC machines whereas our predecessors used to do it all by hand. This ensures both guaranteed quality and favourable prices.

  3. 3. Fire resistance

    Inner walls are clad in plasterboard panels to ensure appropriate fire resistance of the wall. The ground floor and attic ceiling are also furnished with fire-resistant plasterboard panels. All insulations integrated into walls are processed with boron salt to prevent inflammation in the very frame. Research has shown that in the event of fire appropriate wooden joists would endure the structure and statics related burden for much longer than other materials usually applied in construction.

  4. 4. Thermal conductivity

    The houses boast very low thermal conductivity of outer walls and the attic ceiling, which is lower than 0.15 W/m2K. The daily air change rates between 0.7 and 1.5 rank among low-energy houses. Thermal conductivity of the glass used in windows normally amounts to U = 0.6 W/m2K. The trunking system is fully thermally insulated. The thickness of the insulation layer can be increased both for walls and the roof.

  5. 5. The roof

    Below the clay roofing, DWD boards are used as secondary roofing. The board is walkable, waterproof and noise-proof, resistant to wood parasite and persistent, at the same time featuring excellent permeability for water vapour. The ventilation layer in the roof prevents for the attic to overheat in summer, at the same time contributing to the preservation of roof trusses.

  6. 6. Energy economy and degradability

    Heating in low-energy houses most often uses natural gas or heat pumps. Another option is to install photovoltaic cells, which can generate enough electricity for our purposes. All excesses of the energy generated may be sold to the electricity utility at a guaranteed subsidized rate. All the materials used are biodegradable. Using recuperators, our passive houses are ensured heating, cooling and forced ventilation with electricity costs kept as low as possible.

In comparison to already established type of construction, competitive advantage is ensured by:

  • solid timber frame construction,
  • use of natural materials,
  • the house that “breathes”,
  • individuality and transparency in construction,
  • the timber frame is assembled in only 3 working days,
  • the costs are comparable to traditional construction.

Customers are becoming increasingly aware of ecological construction and biodegradable materials, therefore they opt more often for such construction. Energy economy represents an important cost factor in household budgets. The quality of living has been gaining in importance, and it can only be ensured in a “house that breathes”. And what is most important, the total price of low-energy houses is not considerably higher than the traditional modular houses or traditional masonry buildings.

Such houses are based on drywall construction, which enables assembly throughout the year (with minor modifications).