G15 Steel Door

Gallery

A selection of our G15 projects

Up to 4 Hour Steel Fire Doors

Our G15 steel fire doors have been tested to BS 476 or BS EN 1634, and some variants have achieved integrity ratings in excess of 4 hours.

Our current fire rated steel doorsets include:

• 995w x 2090h single, single latch, 240 minutes
• 1000w x 2250h single + 542h solid transom, single latch, 90 minutes
• 1243w x 2792h single, 3-point locking, 240 minutes
• 1795w x 2090h double with rebated meeting stiles, single latch, 120 minutes
• 2392w x 2792h double with rebated meeting stiles, 3-point locking, 120 minutes
• 2000w x 2100h double with plain meeting stiles, unlatched, 90 minutes
• 2000w x 2150h double + 550h solid transom, rebated meeting stiles, single latch, 120 minutes
• 2512w x 2742h double with plain meeting stiles, no locks, 120 minutes
• 3272w x 2742h double with plain meeting stiles, no locks, 90 minutes
• 1000w x 2200h single, unlatched, 120 minutes

Fire rated doors must be fitted with a self closing device. Where fire doors need to be held open, we can supply electro hydraulic closers or hold open magnets, which may be linked to the building's fire alarm system.

Asymmetric double doorsets are available subject to certain criteria. Contact us for more information.

The fire resistance of vision panels is mainly dependent on the type of glass fitted. We can supply units rated from 30 minutes to 4 hours.

Fire resistant louvres are available, rated up to 4 hours.

More information on fire testing is available at Exova Warringtonfire.

Frames

We produce two main frame types for our steel door range, all fitted with weather seals and security pegs.

Rebate Frame

Our general purpose frame for fitting between walls, into steelwork, masonry or timber. Adjustable hinges are fitted as standard, with continuous hinges as an option. The integral concealed adjusting screws will accommodate up to a 10mm clearance per side in the structural opening, eliminating the use of loose packings. Many profile variants and sizes are available.

Type 3 Frame

A special purpose frame, often used for portable or sectional buildings. The frame depth is normally tailored to match the wall thickness. Also available as a two-part clamp frame.

Thresholds

The threshold is designed as an integral part of the doorset, giving additional strength to the frame; aiding weatherproofing and sound reduction, and providing a stable surface for lower locking points.

For general purpose industrial buildings, construction is normally of galvanised steel. For offices, shops and public buildings, aluminium or stainless steel is used for the aesthetic qualities. For food preparation areas or wet situations, stainless steel has the necessary hygienic and corrosion resistance properties.

For very heavy use, we can fit additional internal reinforcing. For severe duty use, such as forklift traffic, solid stainless steel gives the ultimate in strength.

Where no threshold is required for a level access, the doorset will be delivered with a temporary threshold which is removed after installation.

We recommend that external doorsets with no threshold should be fitted with an automatic drop seal, to minimise water ingress, draughts and noise. Dropseals may be surface mounted or concealed within the door bottom.

Locking Systems

Specifying particular locks will change the operation of a doorset. Points to be considered are:

• Emergency requirements
• Frequency of use
• Security

We can advise on the correct locking equipment for a particular use, but in general:

• Personnel doors are fitted with a standard mortice lock.
• Doors that need more security, can have additional mortice dead locks or a multi-point locking system.
• Escape doors to be used by members of the public need a full width panic bar.
• Escape doors to be used only by internal staff and not by members of the public, may be fitted with either a push pad or mortice escape lock. For frequent use as a personnel door, a mortice escape lock is the preferred option.

Mortice locks

Mortice locks fit inside the door, and are available with several different functions
On a mortice escape lock, depressing the inside handle will override a locked cylinder or deadbolt. Standard locks and escape locks may be easily exchanged on site if escape functions are revised after installation.

Panic Bars and Push Pads

These units are surface mounted, have 1 to 3 locking points.

Cylinders

Europrofile lock cylinders are available in standard and drill-resistant, high security types. High security keys are not easily copied and can be useful to avoid unauthorised key duplication.
Various keying options are available - standard differ, keyed alike, master, suites etc.

Access control

Systems may be activated by various means, including card or proximity readers, keypads, microwave or infra-red sensors, biometric sensors, or just manual switches. To link with a building’s system, we can supply doorsets fitted with:

• Electric handles
• Electric strikes
• Maglocks
• Powered operators

Units are available in 12V or 24V, AC or DC to suit most access control systems.

Doorsets may be fitted with sensors to provide open or closed position information to a central control room.

Handles

First impressions count. As the first part of a building to be touched, steel and glass door handles need to be selected with care and attention to detail. All of our door handles are carefully chosen for their functionality, style and durability. They convey a message of quality - feeling solid and reassuring in the hand.

Finishes

Many of the door handles are available in a choice of materials: aluminium, brass, nylon or stainless steel, and may have a choice of finishes: brushed, satin or mirror polished.

Lever Handles

Lever handles are available with long backplates, or on round roses with a matching cylinder escutcheon.

Subject to a few limitations, our lever handles may be paired with most of the mortice locks, while the surface mounted locking systems have their own specific handles and outside operators.

Pull Handles

Our pull handles are all bolt-through for heavy duty use, with either a push plate to conceal the fixings of a single handle, or back to back fixings for a pair of handles. We offer a section of sizes, from 300mm to 1800mm, in straight, cranked, curved or angled styles.

Door Closers

Overhead closers are versatile and useful. All will close the door, to limit further access or maintain internal environments. Depending on the model chosen, they can also:

• Control the opening and closing speed – useful in windy situations.
• Restrict the door opening angle, to prevent damage to doors and the reveal corners.
• Hold a door open - useful when carrying goods through.
• Delay closing – helpful for parents with buggies or people with limited mobility.
• Fire rated doors must be fitted with a self closing device so that the doorset will resist the spread of fire. If these doors need to be held open in normal use, we can fit electro-hydraulic closers linked to the building’s fire alarm system.

Surface mounted closers are available in several finishes, to complement the chosen colour scheme.

Concealed closers are useful in some situations:

• Not visually intrusive – can promote a minimalist look
• Will allow doors to be opened nearer to adjacent walls or other obstructions. The closer body does not protrude from the surface of a door, nor does its arm stick out.
• Can be helpful in anti-ligature regimes.
• Are less susceptible to vandalism.

 

Limit Stays

Adjustable telescopic limit stays are a budget alternative to closers. They can:

Restrict the door opening angle to prevent damage to doors and the reveal corners.
Be tightened to hold a door open.

Powered Operators

Powered operators are often fitted to main entrance doors to allow unimpeded entry and exit of pedestrians from a building. They can also be useful when:

• Carrying goods through
• Pushing trolleys through
• Driving vehicles through
• Linked to access control systems

 

Inward Opening Doors

On inward opening doors, overhead closers are normally mounted on the pull side of the door leaf, which can result in the closer body fouling an adjacent wall when the door is opened to 90°, for example in narrow corridors where the corridor width is the same as the frame width. The normal solutions are to allow a 100mm wall nib, or to cut a clearance recess into the wall for the closer body. If neither solution is possible, we can build thicker frames or recommend an alternative closer type.

Vision Panels & Louvres

Vision Panels

Vision panels are available as an option for the G15 doorset. There are many different sizes and configurations available, including meeting the Part M requirements. 4 Hour fire rating can be achieved.

 

The largest vision panel available would have to maintain 150mm minimum around the edges of the door. If you need slimmer, look at our SG20 slimline glazed door

 

Louvres

Louvres are typically used in plant rooms, substations and bin stores.

The louvres we use have 50% free area (36.6% when using insect mesh)

They are available in different configurations. The most common are:

• One in the bottom half of the door
• One in the top half of the door
• Full door louvre
• Two half door louvres

 

Transoms and side panels

G15 doorsets are available with optional transom panels, side panels or a combination of both.

Sizing

We produce both made to measure and standard sizes. When ordering, please note that it is customary to allow a fitting clearance of 0 – 8mm on the width and 5 – 10mm on the height of a doorset.

When fitting to steelwork or timber, we normally allow 5mm clearance on the width and 5mm on the height of a doorset. When fitting to masonry, we increase the clearances to 8mm on the width and 8mm on the height, to compensate for slight variations in the structural opening.

In general, clearances should be kept tight on the width for a neat appearance, but on the height, more clearance is advisable to allow for the arc of movement as the doorset pivots towards vertical during installation.

We always advise that actual structural openings are measured, if possible after the floor has been laid. Please do not assume that structural openings will be constructed exactly to the size shown on the architect’s drawings.

 

Standard Rebate Frames
	Overall and order size	Structural opening	Clear opening*
	895 x 2095	900 x 2100	764 x 2016
	935 x 2095	940 x 2100	804 x 2016
Standard single	1000 x 2090	1005 x 2100	869 x 2011
Max 1250 single	1240 x 2970	1245 x 2975	1109 x 2891
Standard double	1795 x 2095	1800 x 2100	1658 x 2016
Max 1250 double	2393 x 2970	2398 x 2975	2256 x 2891

 

 

Type 3 Frames
	Overall and order size	Structural opening	Clear opening*
	895 x 2045	900 x 2050	815 x 1991
	895 x 2095	900 x 2100	815 x 2041
Standard single	995 x 2095	1000 x 2100	915 x 2041
Max 1250 single	1195 x 2445	1200 x 2450	1115 x 2391
Standard double	1795 x 2095	1800 x 2100	1714 x 2041

 

Preferred standard sizes

* Door open to 90° and no allowance made for protruding lever handles. Contact us to ensure compliance with current Part M requirements or when clear opening dimensions are critical. With a level threshold, the height may be increased by 15mm. 

 

 

Colours and Materials

Steel doors and frames are produced fully finished in leather grain plastisol or may be powder coated to any BS or RAL colour. Please be aware that some powders may be classed as special orders and therefore incur extra charges - please call us with your colour requirement and we will advise. Other finishes available are Rimex metals on our RX15 variant, and wood-effect steel on our WE15 variant. 

RAL Colours

BS 4800 Colours

Plastisol

Wood Effect

Colours shown on your screen or printer may vary from actual product colours, which may also vary slightly between batches. If you would like to see an actual colour sample, please call us.

G15 Steel Doorset NBS Specifications

We are always pleased to offer door specification advice. It is very important to us that our doorsets are correctly specified for their intended use so that they may give many years of trouble-free service. We believe in offering the best options for your project so that you get a product that is manufactured exactly to your needs.

Below are some G15 steel doorset NBS specification examples. Please feel free to edit them for use in your plans, tender documents or specifications. If you cannot see just what you want, then please contact us and we will be pleased to write specifications for you.

Please contact us for the NBS specification of G15 fire-resistant doors.

 

G15 steel doorset with mortice lock

Supply and install G15 doorset by DoorTechnik Ltd, Moor Lane, Thorpe on the Hill, Lincoln, LN6 9BW. Tel: 01522 693522.www.doortechnik.co.uk Email: info@doortechnik.co.uk

Finish as delivered: Polyester powder coated to BS or RAL tbc, or stainless steel construction.

45mm door leaf, constructed of 1.5mm galvanised steel, with internal reinforcing and an insulated core. Overhanging flanges to all four edges for security and weatherproofing, with three security pegs to hinge edge.
Frame construction of 1.5mm steel, with internal reinforcing, heavy-duty adjustable standard hinges, integral frame adjusting screws and flexible weather seals.
Standard 15mm DDA compliant threshold in galvanised steel, or stainless steel.
Fixings in accordance with the supplied installation instructions.

Mortice sash lock, with euro profile cylinder and lever handles.

Optional ironmongery:

• Concealed flush bolts or surface mounted tower bolts for double door slave leaf
• Overhead closers
• DDA compliant vision panels
• Louvres
• Continuous stainless steel hinge
• Access control locks
• Additional deadlocks
• Concealed alarm contacts

 

G15 steel doorset with single action escape lock

Supply and install G15 doorset by DoorTechnik Ltd, Moor Lane, Thorpe on the Hill, Lincoln, LN6 9BW. Tel: 01522 693522. www.doortechnik.co.uk Email: info@doortechnik.co.uk
Finish as delivered: Polyester powder coated to BS or RAL tbc, or stainless steel construction.

45mm door leaf, constructed of 1.5mm galvanised steel, with internal reinforcing and an insulated core. Overhanging flanges to all four edges for security and weatherproofing, with three security pegs to hinge edge.
Frame construction of 1.5mm steel, with internal reinforcing, heavy-duty adjustable standard hinges, integral frame adjusting screws and flexible weather seals.
Standard 15mm DDA compliant threshold in galvanised steel, or stainless steel.
Fixings in accordance with the supplied installation instructions.

Mortice escape lock to BS EN 179, with euro profile cylinder and lever handles.

Optional ironmongery:

• Concealed flush bolts or surface mounted tower bolts for double door slave leaf
• Overhead closers
• DDA compliant vision panels
• Louvres
• Continuous stainless steel hinge
• Access control locks
• Concealed alarm contacts

 

 

U Values

The U Values for the G15 steel door have been calculated to EN 673, EN ISO 10077-1 and EN ISO 10077-2. As standard, all G15 doorsets have an insulated core.

A standard 45mm G15 with foam core is 2.2 W/(m²K)

The rest of the range is between 2.0 W/(m²K) and 5.1 W/(m²K). Please contact us for more details.