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FROM THE GLASSTEC TEAM
Glasstec Systems offers bespoke glass solutions for commercial and residential properties.

Frequently Asked Questions

 

 

What does Glasstec Systems do?

Glasstec Systems offers bespoke glass solutions for commercial and residential properties.

We work with architects, facilities managers, builders, commercial re-fitters and home owners. Our goal is to deliver quality work on time every time.

What makes Glasstec Systems different?

Glasstec Systems is a contained family run company. What that means is we offer a personal service, attention and expertise to individual glass projects. We will do whatever we can to meet completion deadlines.

Is there work that Glasstec Systems doesn't take on?

Yes. We will not take on work that we cannot deliver.

My budget may not be enough. Can you still help?

We can help to tailor a glass design solution to meet most sensible budgets

Do I need drawings?

Drawings certainly help the process. However, if you don't have them, don't worry.

We can help you get started with an idea or two.

How do you address environmental issues?

Any waste is recycled. We conform to any relevant health and safety guidelines.

We adopt a common sense approach, keeping an ecological approach.

How good is your Health and Safety record?

To date, we have no injuries or problems to report. However, we keep the safety of fellow humans, whether they be fellow workers, clients or the general public, as our first priority.

We hope to maintain this 100% record.

Who can I speak to about my project?

You can call us at any time during the working day. Ask for Laurence or Lauren.

Our office number is 020 8500 2818 and we will be pleased to hear from you whenever you choose to give us a call.

What is toughened glass

Toughened glass is four to five times stronger than annealed glass of the same thickness and is ideally suited to most safety critical applications. The increased strength enables it to be supported by two or even one edge and allows the safe use of glass in ways not possible with other glass types. All-glass doors and bolted balustrades are examples of this. Its use must, however, be subject to careful consideration.

 

If ever broken, the glass will shatter into small relatively harmless pieces that will no longer support a load or act as a barrier. Toughened glass that is not fully framed is likely to fall from its fixings. On rare occasions, toughened glass has broken in service for no apparent reason.

This can be caused by a variety of reasons including damage, impact or inclusions within the glass. One particular type of inclusion, nickel sulphide, has attracted publicity and it is important that specifiers understand its characteristics and the risk of breakage in service.

 

Nickel sulphide (NiS) is formed naturally within the glass-making process but is of concern only in glass that is subsequently toughened. The inclusions are too small to be visually detected by the glass manufacturers and when heated in the toughening process undergo a phase change that reduces their size. Cooling of the glass is far too rapid to allow reversal and this takes place over

a period of time. If an inclusion is sufficiently large and is located within the centre of the glass it can cause spontaneous breakage.

 

It is vital to stress that the risk is very small. Glass manufacturers estimate the incidence at lessthan 1 in 13,000kg of annealed glass.

What is heat-soak testing?

Heat-soak testing is a destructive test for the presence of nickel sulphide inclusions. It involves placing the toughened glass into an oven and heating it to a temperature of 290oC. The glass is kept at this temperature for a period of time long enough to fracture a large proportion of any panes that might otherwise fail in service. Heat-soak testing achieves a conversion rate of 90 to 95%. Heat soaking will not detect other inclusions such as silica that can also cause breakage.

Heat-soak testing is recommended for safety-critical work such as atrium glazing and balustrades as well as for load-bearing glazing, overhead glazing and for use in highly trafficked areas such as airports and other high-profile areas where breakage would be very emotive.

How will I know what glass to order?

That depends on the type of job and the specification. Specialized laminates or some toughened glass can take up to three weeks to make, whereas simpler glasses are available the same day.

Don't worry about waiting for weeks after we said it will be there. We do what we say we are going to do, when we say we are going to do it ... well 98% of the time. No ones perfect!

cked areas such as airports and other high-profile areas where breakage would be very emotive

We can help to tailor a glass design solution to meet most sensible budgets