Energy efficiency

Understand what makes the Designo Range completely different

In order to combat climate change by substantially and rapidly reducing greenhouse gas emissions, low-energy constructions have become a major topic. Making the most of its considerable German know-how in the field of eco-building, Roto has invested heavily in the technical aspects of the Roto Designo roof window range, to make sure that it provides a convincing answer to the new thermal requirements of passive or low energy consumption buildings.

Energy efficiency

Understand what makes the Designo Range completely different

High thermal insulation

Reduction of thermal bridges: pre-fitted thermal insulation collar* (see cross-section below nb. 1)
High thermal insulation: double or triple** low energy Roto glazing

U-value of 0,80 W/m²K for Designo R8 (PVC) with the triple glazing Roto blueTec Plus (9P) according to the ‘Passiv house’ standard

* Optional on R7 and R4 RotoTronic and as standard on R8
** Triple glazing only for R8

Air permeability

High air permeability: vapour barrier included as standard in accordance with DIN EN 12207 (classification A3)
‘Blower Door’ test (DIN EN 13829): double rubber seal to ensure air tightness requirement

More natural light

Greater light area*: slimmer external profiles for a greater light area compared to other windows on the market
More light: window height up to 1600 mm for optimal space utilisation and light yield (R4, R7, R8)

* For Designo R4 RotoTronic and R7

Greater energy savings: double or triple** low emissivity glazing and exterior sun screening to get maximum natural light whilst maintaining energy saving in winter and summer

** Triple glazing for Designo R8 only