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Technical Advice

01702 512424


Better Built Doorsets

GUARDIAN FR steel doorsets are designed for internal and external locations and are suitable for fire resistance purposes in commercial and industrial applications. Over 20 fire tests have been carried out in the last 4 years at Warrington Fire Research Centre to BS476:Part 22 and BS.EN1634-1 for periods up to and including 4 hours integrity fire resistance.

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Product Certifications

BS:476 Part 22 up to 240 mins integrity fire resistance

EN1634-1 up to 240 mins integrity fire resistance

Door Leaf

A 45mm thick, flush edged 18g zinc coated steel leaf with a bonded non-fibrous honeycomb core selected for torsional load performance. 

The vertical edges of the skins are folded to create a full height, bevelled edge with interlocking seam for increased panel strength and rigidity.

The void between the two skins is in-filled with a bonded honeycomb core material, selected for its compression & torsional load performance.

The hinging edge is reinforced by steel hinge mounting plates welded within the leaf, and the lock mechanism is installed within an inner enclosure to facilitate is removal for future maintenance or replacement.

On externally located double doors an astragal is fitted to one leaf to ensure positive sealing at the centre.


Galvanized steel folded to form a double or single rebate profile.

Frame sections are pressed from galvanized steel to form a double (standard) or single rebate profile. Headers are profiled to form a smooth, butt joint with the full height vertical posts and headers include bolt fixing for positive engagement.

Uprights are reinforced with steel plates at all hinge & lock points.

Shallow depth thresholds are available at extra cost, either as folded steel or extruded aluminium sections.

Frames are arranged for bolt fixing to any suitable opening structure.

Vision Panels

Vision panels are available in various standard sizes, glazed with CERTIFIRE approved glass and gaskets.


A variety of approved compression and wiper seals are available, fitted into the frames to leaf rebate, between the leading edges of double door leaves and in the bottom edge of door leaves.


Door leaves and frames receive one coat of self etching primer, as standard, for site painting. Alternatively, they are supplied factory finished in any standard RAL or BS4800 colour. Specialist paint systems to suit coastal/chemical environments and foodsafe applications are also available.


Peace of Mind Warranties

All our products are guaranteed against defect of material or workmanship by Guardian Doors, subject to correct, maintenance and operation, for a period of 12 months from the date of installation. We offer extended warranties for up to 5 years with an agreed maintenance contract. Contact us for more details.

Maintenance Packages

Planned preventative maintenance

See our maintenance section or contact us for more information. Guardian's repair and maintenance services and engineers are accredited to the DHF's TS004 Repairs and Maintenance standard.

It is a legal requirement - as failure to show evidence of maintenance could mean prohibition & enforcement notices being served and fines up to £5000 and imprisonment for 2 years. 'Safety In Use' - the New European CEN Standards legislation - states that all types of door should be maintained in an efficient state, in efficient working order and in good repair. For further clarification visit

Routine maintenance prolongs the operational life of the installation and ensures that the installation is kept in good working order - helping to prevent accidents and damage which in turn results in down time, effecting work flow, productivity and resulting in loss of revenue. It assists in identifying potential problems which can easily be rectified.

Peace-of-Mind Warranties

All our products are guaranteed against defect of material or workmanship by Guardian Doors, subject to correct maintenance and operation, for a period of 12 months from the date of installation.

Registered Office

45 Progress Road
0800 7836602
+44 (0)1702 260117
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Established in 1979, Guardian Industrial Doors design, manufacture, supply and maintain industrial and commercial roller shutters, doors and gates.

©2015 Guardian Doors