Blast-resistant glazing in Harlow

How much should I budget for blast-resistant glazing in Harlow?

Our guide range for blast-resistant glazing in Harlow 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 goes into blast-resistant glazing

Glazing classed to BS EN 13541 or tested to ISO 16933 and 16934
Laminated glass with thick or stiff interlayers
Blast-resistant net curtains as a fragment-catching layer
Anti-shatter film with edge-retention systems for existing windows
Deep-bite frames and structural silicone or mechanical retention
Sealed units with a laminated inner pane

Fitting in Harlow and nearby

Surveys in Harlow (CM17) are booked around installer availability. We also cover nearby Hoddesdon (5 miles), Bishop's Stortford (7 miles) and Waltham Abbey (8 miles).

Essex runs from Chelmsford and Colchester's town-centre retail and Georgian streets to Southend's seafront and large post-war and new-build estates in Basildon and Harlow.

Common uses:

Offices in city centres and near potential targets
Transport hubs, venues and stadium frontages
Government, council and civic buildings
Laboratories and industrial sites with process risks

What to think about first

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.

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.

Consents and safety: England

England

Fire-rated glass is different

Glass in fire doors, fire screens and protected escape routes has to be fire-rated glass tested as part of that door or screen system, under Approved Document B and the fire safety duties of the building's responsible person. Laminated and security glass are not fire-rated unless the product says so. Where a pane needs both fire and security performance, it must be a product tested for both.

Planning permission

Changing the glass in an existing window or shopfront does not usually need planning permission, because the building looks much the same afterwards. A new or altered shopfront, or security features added to the outside of a building, may need planning permission from the council. Bollards or barriers on the pavement need the highway authority's consent, which is normally the council.

How it works

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

Blast-resistant glazing in Harlow: questions

Can you survey in Harlow and nearby towns?

Yes. Surveys in Harlow, Hoddesdon and Bishop's Stortford are booked around installer availability.

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.

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.

Blast-resistant glazing in nearby towns

Other glazing in Harlow

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Free quote in Harlow