Thermal-insulation

Trabnsparent heat insulation

ROOF CONSTRUCTIONS of semi-transparent glass lattice fabric.
Special features concerning:

• Light-transmission
• Energy-transmission
• Heat-insulation coefficient
• Sound-insulation
• Room-acoustics

Usually membrane constructions have no heat insulation.
From this some disadvantages result:

• High surface temperatures by sun-radiation causing problems in thermic comfort - too hot.
• Low surface temperatures in cold nights causing drop in temperature, problems in thermic comfort.
• Dew-water development at the inner surface, risk of mildew.

BY A SPECIAL GLASS FIBRE INLAY the flontex roof system gets a higher standard of heat insulation. In spite of heat insulation the roof is still translucent. About 50% of the light passes through the heat insulation. Together with the PTFE-glass fibre fabric on top- and bottomside the transmission can be reduced so far, that no problems of blinding appear.
The flontex roof brings daylights at moderate heat increasing during sunny hours. At clear sunny days about 200 W/m² get inside. The intensity of lighting is around 20,000 lux at noon (in comparision, 300 to 500 lux are required in offices). Even at very cloudy days the illumination is about 2,000 lux. In cold nights the good heat insulation prevents from extremly cooling-down. There is no appearance of dew-water.

Construction

Thermophysical characteristic of the whole construction

heat exchange coefficient	k	= 1,1 W/m²K
total degree of energy permeability	g	= 26%
degree of transmission	e	= 20%
degree of reflection	e	= 43%
degree of light transmission	L	= 22%