Pyramids

Pyramids

Pyramid shapes are made of PMMA (polymethyl metacrylate, acrylate glass). The PMMA thickness is 2 - 3 mm. The cupola shape is made by thermal moulding. Individual layers are screwed together into one compact block. Also there is double side sticking waterproof adhesive tape between individual layer. Each pyramid shape has a sealing, which is in contact with the collar.

 

The pyramid shapes are supplied with fastening screws (common lens head screws 5 x 50mm).

 

Thermal insulation properties

  • Single layer - U = 5,6 W/m²K
  • Double layer - U = 2,4 W/m²K
  • Triple layer - U = 1,8 W/m²K

Colours

The pyramids are available in two colours

  • Clear (transparent) - light transmittance 92 %
  • Opal (milk) glass with practically similar light transmittance but not transparent

Other colours are available on request.

Alternative materials

  • PC (polycarbonate) in comparison to glass polycarbonate is 300 x more resistant. Demonstration - see Fig. 2 Colour - clear (transparent)
  • Heatstop - when using this material, the cupola gets excellent heat reflecting properties. This material reflects up to 68% of the sun rays, which eliminates interior overheating. Colour - pearly white (non transparent but translucent)
  • Solar control IR this material combines advantages of PC (polycarbonate) and Heatstop. It is very resistant against mechanical damage and reflects up to 65% of sun rays. Colour - bronze (smokey), translucent

Flammability classes

  • Pyramid PMMA C1
  • Pyramid PC C1
  • Fibre glass collar B

Base shape

  • Square
  • Rectangle