Day-Lite Trapezoidal FAS Rooflight KS1000 DLTR FAS

Day-Lite Trapezoidal FAS Rooflight KS1000 DLTR FAS

Our Factory Applied Spacer (FAS) rooflight is designed for enhanced build speed and lifetime performance

This polycarbonate rooflight is quicker to install, whilst delivering the same excellent long-term light-transmission and diffusion.
  • U-Value: 1.6W/m2k
  • Light Transmission: Up to 66% when new
  • Solar Heat Gain Coefficient: As low as 0.48
  • Diffusion: Up to 99%
  • Lengths: Available in lengths up to 8m 
  • Application: Suitable for roof pitches of 4o or more after deflection
  • End Lap: 75mm end lap available
  • Non-Fragility Performance: Achieves ACR[M]001: 2014 Class B (500 joules test) and BS EN 14963: 2006 Class SB1200 (1200 joules test)
  • Product Compatibility: Kingspan Trapezoidal Roof Panels
  • Warranty: Guaranteed structural, thermal and UV resistance performance for up to 25 years

Technical & Downloads

Product Reference Thickness (mm) Weight (kg/m2) U-Value (W/m2k) Light Transmission (%)* Solar Heat Gain Coefficient
KS1000 DLTR 1.6 FAS Opal** to suit panel 4.25 1.6 61 0.57
KS1000 DLTR 1.6 FAS Clear to suit panel 4.25 1.6 66 0.67
KS1000 DLTR 1.6 FAS Kool to suit panel 4.25 1.6 58 0.48
The U-values have been calculated using the method required by the appropriate National Building Regulations.
*Light transmission, according to BS EN 410, is as measured on 600mm x 600mm samples.
**99% Diffusion. 
Solar Heat Gain Coefficient (SHGC), according to BS EN 410, is the total solar energy that enters the interior of a building. In addition to the standard Kingspan Day-Lite colour range, White (0.34 SHGC) is also available, offering enhanced SHGC performances. Please contact the Kingspan Technical Services Department for more information.
Core Thickness (mm) 40 50 53 60 70 73 80 91 100 115 120 137 150
KS1000 DLTR 1.6 FAS


Kingspan Day-Lite Trapezoidal 75mm with FAWS Installation Guide

CAD details

Contact to request the CAD Details for this product.



Kingspan Day-Lite Trapezoidal KS1000 DLTR FAS 75mm End Lap NBS

Kingspan Day-Lite Trapezoidal KS1000 DLTR FAS 150mm End Lap NBS

Kingspan Day-Lite products fully satisfy the internal and external requirements of the National Building Regulations achieving:
  • Euro Class B (internal);
  • National Class AA and Euro Class BROOF(t4) (external).
Kingspan Day-Lite Trapezoidal FAS achieves a classification of B-s1,d0 when tested to EN 13501-1: 2007.

For more information on fire performance please contact

Kingspan Daylighting Solutions Operations & Maintenance Manual

Kingspan Daylighting Solutions Product Safety Information


Planet Passionate
Planet Passionate
Through our new Planet Passionate 10-year groupwide sustainability programme, we aim to make significant advances in the sustainability of our business and of our products.

Non-Fragility Performance

Take a look at how our Kingspan Day-Lite Trapezoidal polycarbonate rooflight performed during a 50kg drop test. 

Introducing our New
75mm End Lap

Our new 75mm end lap detail for the Kingspan Day-Lite Trapezoidal range achieves Class A air permeability, ensuring an unrivalled product fit with Kingspan Trapezoidal Roof Panels. Watch our video to learn more.