The Howells roof vents can be added to any patent glazing or rooflight structure at manufacturing stage.
They can be opened with several different type of gearing from manual clipped and worm, and electric options of switched, rain sensor and thermostatically controlled
We have developed our own vent system, to slot within our roof patent glazing bars. They have been designed to accommodate all types of roof patent glazing utilizing 28mm double glazing to suit customer requirements.
The system comprises of electrically operated opening ventilators connected to a simple on/off switch or digital
control panel with rain sensor & thermostat. Manual worm gear option also available controlled operation
using an operating pole.
Extruded aluminium alloy complying with BS EN 755-9:2008, the designation ancillary components such as
flashing, closures weathering and gutters are provided from preformed aluminium alloy. The bars can be
sup plied in mill finish, anodized to BS EN ISO 7599:2010 - Wintech - Weather Tested BS EN BS 6375-1
Supplied in mill finish, anodized to BS EN ISO 7599:2010 or powder coated to BS EN 12206-1:2004 in a wide
range of colours. RAL 9910 Satin Hipca White & RAL 7016 Matt Anthracite Grey are our standard stocked
EPDM glazing seals as standard offering excellent long term performance. Minimum recommended roof pitch
10 degree (lower pitches are possible but are reliant on perishable silicone seals)
Roof vents carry a 5 year warranty / Electrical actuators carry 1 years manufacturer's warranty
More details can be found at https://www.howellsglazing.co.uk/vents.php