Glass mullion system
A glass mullion system is a type of glazing system that can be used to construct vertical glass curtain walls, canopies, skylights, and so on, allowing large areas of glazing to be created whilst maintaining a high level of transparency.
It is formed by sheets of tempered glass held in position by clamps and joined to the glazing by a structural silicone sealant or by metal patch plates. The glass mullions are typically suspended from the head structure above and can span distances of more than 20 m or more, transferring wind, snow and self-weight loading back to the primary structure.
[edit] Find out more
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Listed structures on the rail network
Heritage interests and operational requirements must be balanced.
Historic England publishes research into embodied carbon when retrofitting traditional buildings.
New Prime Minister delivers on ECA call for cut in electricity costs.
CIOB reacts to the announcement of Andy Burnham as Prime Minister.
Heritage and conservation science workforce survey - Have your say.
England's Suburbs 1820-2020. Book review.
New, more proportionate and targeted approach for higher-risk building assessments.
Government brings British Steel into public ownership.
UKCW Birmingham returns with bold new theme and focus.
New guidance published on competence requirements for self-certification schemes.
Construction Management, 8 July
NEETs crisis drives interest in trades, but apprenticeships barriers remain.
Passive fire protection webinar
MEP services penetration seals.


















