Price From: £1,636.20 (inc. VAT) £1,363.50 (ex. VAT)

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The VELUX CSP is a smoke ventilation roof window designed to ventilate stairwells and lobbies of smoke or heat exhaust. 
The key features and package for the Flat Roof Smoke Vent Window System includes:

  • 1 x Double glazed window with a choice of two types of polycarbonate cover – Clear (CSP S10G) or Obscure (CSP S10H)
  • Insulated Kerb but onsite flashings will be required
  • Security Fittings
  • Tested and certified to EN ISO 12101-2

Smoke Sensors (KFA 100), Control Panel (KFC 210 or 220) and Break Glass Unit (KFK 100) are purchased separately for the Flat Roof Smoke Vent Window. 

VELUX’s 10 year guarantee on windows and flashings and 3 year guarantee on all electrical products and accessories.

Upgrade : Control system for operating one or two windows electrically is available. Please call 01786 357252 for details.

Smoke Vent

VELUX Size Guide

Instructions on how to install 

Technical Information

Pricing a project? For the best deal call 01786 357252

Design Tool

Assist with window selection and all insulation components


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Price From: £1,636.20 (inc. VAT) £1,363.50 (ex. VAT)
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Further Detail

The CSP Flat Roof Smoke Ventilation System is a new solution for flat roofs where smoke ventilation is needed. The window is double glazed with a toughened outer pane and a laminated inner pane with a protective polycarbonated cover helping to prevent the glass from shattering if broken. To ensure that the system is always ready it must be tested regularly - after installation, service work and alterations to the system. The window is suitable for roof pitches between 0°-15 ° and comes with the VELUX 10 year guarantee for the window and 3 year guarantee for the electrical components.