Blast-resistant glazing in St Helens

Blast-resistant glazing in St Helens: what will it cost?

Our guide range for blast-resistant glazing in St Helens is £450 to £1,495 plus VAT (£540 to £1,794 inc VAT) per m², including fitting. The survey is free for new installations and your fixed price follows in writing.

Blast-resistant glazing is laminated glass fitted in a frame and fixing system designed to stay in the opening, or fail safely, when hit by the pressure wave from an explosion. Its purpose is to stop glass becoming high-speed fragments, which cause most injuries in a blast, and it is designed from a threat assessment rather than chosen off the shelf.

What you can specify

Anti-shatter film with edge-retention systems for existing windows
Blast-resistant net curtains as a fragment-catching layer
Sealed units with a laminated inner pane
Glazing classed to BS EN 13541 or tested to ISO 16933 and 16934
Laminated glass with thick or stiff interlayers
Work planned from the threat assessment and engineer's design

Fitting in St Helens and nearby

We arrange surveys and fitting in St Helens and across the WA10 postcode district, as well as in nearby Prescot (3 miles) and Ashton-in-Makerfield (4 miles). Dates depend on installer availability.

Merseyside has Liverpool's listed commercial centre and waterfront offices, Victorian terraces across the city and the Wirral, and suburban high streets in Southport and St Helens.

Typical settings for blast-resistant glazing:

Laboratories and industrial sites with process risks
Government, council and civic buildings
Offices in city centres and near potential targets
Embassies, courts and police premises

Getting the right glass for your building

Who sets the level

The design pressure comes from a threat and risk assessment by a security adviser or blast engineer, not from the glass supplier.

Frame and fixings

The frame must hold the glass and the fixings must hold the frame. Upgrading glass alone can move the failure to the frame.

What the rules say in England

England

Glazing in workplaces

Regulation 14 of the Workplace (Health, Safety and Welfare) Regulations 1992 requires windows and transparent surfaces in walls, partitions, doors and gates to be of safety material or protected against breakage where health or safety makes that necessary, and to be marked so people notice them. The employer or the person in control of the premises decides what is needed through their risk assessment.

Listed buildings and conservation areas

In England, listed building consent from the council may be needed to replace historic glass such as crown or cylinder glass, or to alter glazing bars, sashes and frames. Historic England publishes guidance on traditional windows. Secondary glazing and window film are often easier to agree because they can be removed later, but the council's conservation officer makes the decision.

How it works

Send sizes or use the quote tool
Free survey at your St Helens address
Fixed price in writing
Glass made, then fitted

Blast-resistant glazing in St Helens: questions

Do you cover Prescot as well as St Helens?

Yes. As well as St Helens, we can arrange surveys in nearby Prescot, Ashton-in-Makerfield and Huyton. Dates depend on installer availability.

What does ER1 to ER4 mean?

They are explosion-pressure classes in BS EN 13541. Glass samples are tested in a shock tube, with higher classes meaning higher pressures. The class applies to the glass, so the frame must be designed to match.

Can existing windows be made blast-resistant?

They can often be improved. Anti-shatter film with an edge-retention system, laminated replacement glass in strengthened frames or internal secondary glazing can cut the flying-glass hazard, depending on the threat.

Does blast glazing affect fire doors and fire screens?

Glass in fire-rated doors and screens must stay fire-rated glass tested in that system. Blast measures there need fire-rated products or a specialist design, never a swap to plain laminated glass.

Blast-resistant glazing in nearby towns

Other glazing in St Helens

Ready for a price? Use the form or call 0800 088 6248.