Lonsdale

Know your glass when choosing overhead glazing

  • 12 Feb 2018

  • Share

Richard Burgess, Managing Director of patent glazing and roof light manufacturer Lonsdale Metal Company Ltd, has analysed the considerations for selecting glass, including costs, thermal and solar performance and safety.

Safety is the most paramount factor in overhead glazing, with the below table summarising how the varying type of glass comply with current Building Regulations.

Screen Shot 2018-02-12 at 12.00.19

Occasionally, it is desirable to use Wired Glass in double glazed combinations but a high risk of breakage exists because of the thermal stress. Therefore, advice ought to be requested from the sealed unit manufacturer.

Toughened glass should not be used in single glazing or to the inner pane of double glazed units in instances such as swimming pools, food & beverage preparation units or anywhere in which the small broken pieces that come with this glass type could cause injury by contamination.

Laminated glass or polycarbonate are recommended for these scenarios.

Lonsdale

In terms of double glazing, the outer pane should typically always be toughened glass. When it comes to performance, the following features to consider include:

Low-e coating; improving thermal efficiency by retaining more heat within the building.

Tinted anti-sun glass can be used as the outer pane when combined with a laminated low-e softcoat glass, giving the benefit of reducing solar heat gain in the summer months at a decent cost. 

Neutral solar control glass features a special coating which provides enhanced solar control and gives a more neutral appearance, in colour with a slightly grey/green tint. 

All these glass types can be combined in triple glazed units, achieving both improved sound insulation and low U-values.

For large pane rooflights, the most economic glass tends to be 4-6mm thick, which rarely can be installed wider than 1000mm. However, the current trend for is seeing single pane rooflights installed up to 3m x 6m in one pane of glass, which calls for specialist manufacturing and installation by experienced companies with the necessary handling equipment and expertise. 
 

 

 

Leave a Reply

More articles

Wrightstyle

Designing in light: a Wrightstyle article focusing on civic architecture

Wrightstyle can cost-effectively turn architectural vision into design reality, creating exceptional architecture to inspire communities.

Posted in Articles, Building Industry News, Building Products & Structures, Glazing, Health & Safety, Lighting, Posts, Research & Materials Testing, Windows

  • Share
Axion

Axion: business models for recycling are changing for the better

Richard McKinlay, Axion’s Head of Circular Economy, suggests changing business models for plastic recycling could lead to a range of benefits.

Posted in Articles, Building Industry News, Posts, Research & Materials Testing, Sustainability & Energy Efficiency, Waste Management & Recycling

  • Share
Screen Shot 2018-11-16 at 11.19.41

Alumasc Rainwater provides finishing touch for listed Suffolk building

Alumasc Heritage Cast Aluminium Rainwater was chosen to replace cast iron gutters and downpipes as part of the major renovation of a listed Suffolk building

Posted in Articles, Building Products & Structures, Damp & Waterproofing, Drainage, Guttering, Soffits & Fascias

  • Share
Keystone Lintels

Bringing derelict buildings back to their former glory with Keystone Lintels

In this article, Ben Cheetham, Technical Sales & Specification Manager at Keystone Lintels, talks about the thrill of seeing a derelict building brought back to life.

Posted in Articles, Bricks & Blocks, Building Industry News, Building Products & Structures, Canopies, Entrances & Column Casings, Case Studies, Posts, Restoration & Refurbishment, Retrofit & Renovation, Walls

  • Share