Howells have developed their own roof vent system, to slot within their roof patent glazing bars. They have been designed to accommodate all types of roof patent glazing applications, utilising both single glass or 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 supplied in mill finish, anodized to BS EN ISO 7599:2010 - Wintech - Weather Tested BS EN BS 6375-1 the independent testing stated best achievable results.
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 colours.
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.