VELUX Hybrid Rooflight TOP-90

The rooflights are available in a variety of standard sizes and with different functionalities:

• Rigid or ventilated variants for comfort ventilation and SHEV
• Improved thermal insulation through multi-wall PC panels or insulating glass
• Fall-through resistance and improved sound insulation through laminated safety glass
• Standard rooflight features such as sun or hail protection
• Can be combined with a wide range of upstands
• Optional equipment with accessories for Roof entry and roof hatch

Product details:

The hybrid rooflight solutions are available in the following three variants:

• Hybrid rooflight dome with Insulating glazing
• Hybrid rooflight dome with a 16 mm PC multi-wall panel
• Hybrid rooflight dome with safety glass

The glazing is built into a special PVC frame that can be mounted on any available upstand.

The technical data of the hybrid rooflight domes can be found below.

Hybrid rooflight dome with insulating glazing (rooflight dome glass)

Heat transfer coefficient:

Glazing: U_g=1.1 W/m²K

+ PMMA 1-skin: U_g= approx. 0.91 W/m²K

+ PMMA 2-skin: U_g=approx. 0.77 W/m²K

Light transmission value:

TL depending on the selected glazing combination and design in opal or clear

of approx. 73 % (1 x ISO + 1 x PMMA clear)

up to approx. 65 % (1 x ISO + 1 x PMMA clear + 1 x PMMA opal exterior)

Total energy transmittance:

G-value depending on the selected glazing combination and design in opal or clear

from approx. 61 % (1 x ISO + 1 x PMMA clear)

up to approx. 58 % (1 x ISO + 1 x PMMA clear + 1 x PMMA opal outdoor)

Hybrid rooflight dome with a 16mm PC multi-wall plate (TOP-90 PLUS)

Heat transfer coefficient:

U-value = 1.1 W/m²K according to DIN EN 1873:2006 (according to DIN EN 6946)

U_t,hor = 1.2 W/m²K according to DIN EN 1873: 2014

U_rc,ref300 = 1.02 W/m²K according to DIN EN 1873:2014 (roof opening 120 x 120 cm with 300 mm ISO-THERM upstand)

Airborne sound insulation value: R_w = 28 dB

Light transmission value:

- For opal: 38 % / clear: 48 %

Total energy transmittance:

- For opal: 54 % / clear: 56 %

Hybrid rooflight dome with safety glass (TOP-90 sound)

2-layer PMMA rooflight dome with 8 mm laminated glass at the bottom

glass according to EN 12600 1B1

Heat transfer coefficient:

U-value = 1.9 W/m²K according to DIN EN 1873:2006 (according to DIN EN 6946)

U_rc,ref300 = 1.39 W/m²K according to DIN EN 1873:2014 (roof opening 120 x 120 cm with 300 mm ISO-THERM upstand)Airborne

sound insulation value: R_w = 36 dB

Light transmission value:

- For matte: 44 % / clear: 65 %

Total energy transmittance:

- For matt: 53 % / clear: 72 %

Hybrid rooflight dome with safety glass (TOP-90 Komfort S)

4-shell PMMA rooflight dome with 8 mm laminated glass

at the bottomSafety glass according to EN 12600 1B1

Heat transfer coefficient:

U-value = 1.2 W/m²K according to DIN EN 1873:2006 (according to DIN EN 6946)

U_t,hor = 1.2 W/m²K according to DIN EN 1873: 2014

U_rc,ref300 = 1.11 W/m²K according to DIN EN 1873:2014 (roof opening 120 x 120 cm with 300 mm ISO-THERM upstand)

Airborne sound insulation value: R_w ≥ 36 dB