Steel core. Any face.
From engineered timber that passes for a Victorian front door to bare powder-coated industrial assemblies. Same patented welded steel core in every one.
What an architect specifies as a front door isn’t quite what we manufacture. We manufacture a patented welded steel frame – rockwool-filled, multi-point locked, hardware engineered directly into the steel. That’s the door. The face you draw – timber, painted, period replica, plaster-concealed – is what gets fitted to it after.
Engineered timber cladding takes any paint, finish, or grain. Mahogany, oak, cherry, anthracite, or a flat colour out of any RAL chart. Period profiles get carved into the cladding for Victorian, Edwardian, or Georgian replication. Modern flush goes the other way. The steel doesn’t change. The cladding does.
We don’t sell direct. The four customer brands further down handle the four audiences – residential, HNW London, heritage, commercial – each with their own range, install team, and pricing. Same factory behind all of them.
FE / 08
Placeholder – steel frame mid-fabrication. Naked reveal shot, before cladding. Replace before launch.
What we manufacture
Five variants. One core.
Every variant uses the same patented steel frame, the same rockwool fill, the same multi-point locking. What changes is the rating, the glazing, and the finish.
01 / Variant
Standard
Single and double leaf, single-and-a-half, plus side panels and transoms. Any finish – engineered timber, paint, powder coat.
LPS 1175 SR1-SR2
PAS 24
02 / Variant
Louvred
Steel doors with integrated ventilation slats. Plant rooms, switch rooms, utility cupboards, riser doors.
LPS 1175 SR2-SR3
03 / Variant
Fire exit
Certified fire resistance from 30 to 240 minutes. Stays a security door under fire load, with intumescent seals throughout.
BS 476
LPS 1175 SR1-SR3
04 / Variant
Acoustic
Up to 48dB attenuation through the leaf. Rockwool fill plus tight perimeter seals. Rated to project spec.
Rated to spec
05 / Variant
Bulletproof
Ballistic glazing per EN 1063 BR1-BR7. Reinforced steel construction. The highest fabric ratings we produce.
LPS 1175 SR3-SR4
EN 1063
What’s inside
Manufacturing specifications.
The numbers a specifier actually needs. Drawn straight from the production line, not the brochure.
Steel
Frame
Patented welded steel
Fill
Rockwool, full cavity
Source
British, certified mills
Welding
Coded welders, to standard
Glazing
Anti-bandit (standard)
Double-glazed
Anti-bandit (enhanced)
Triple-glazed
Ballistic
EN 1063 BR1-BR7
Acoustic
Laminated, rated to spec
Locking + hardware
Multipoint
6 bolts (1 upper, 1 lower, 4 side)
Hinge bolts
4-8 stainless steel
Drill resistance
Hardened steel defender
Hinges
Heavy-duty steel, concealed or surface
Finishes
Cladding
Engineered timber, any colour or grain
Steel finish
Powder coat, galvanise, or paint, any RAL
Replica profiles
Victorian, Edwardian, Georgian, modern flush
Hardware finishes
Brushed stainless, brass, chrome, matte black
Performance
Fire resistance
30 / 60 / 120 / 240 min (BS 476)
Acoustic attenuation
Up to 48dB through the leaf
Tested at
BRE (fire), independent labs (security)
Weather rating
BS 6375, project-specific
Lead time
Bespoke, project-by-project
Operational warranty
Held by the customer brand
Independently certified to UK security standards.
Manufactured to the standards specifiers actually require – not the ones we like the sound of.
Manufacturing process
How we manufacture.
01
Steel intake
British-sourced steel sheets and structural members arrive at the factory. Quality-checked on receipt.
02
Cutting + forming
Laser cutting and CNC bending to project specification. Tolerances measured in tenths of a millimetre.
03
Welding + assembly
Coded welders join components to certified standards. Frame, leaf, hardware fixings.
04
Finishing
Galvanising, powder coating, painting. Hardware fitted. Glazing units installed where applicable.
05
Testing + cert
Each product batch independently tested. Certificates issued. Then shipped to the customer brand.
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Resources
For architects and specifiers.
Specification files, drawings, and samples. Pull what you need straight into your spec.
Four brands, four audiences.
Fort Engineering manufactures these doors. You buy them from one of our four customer brands – residential, HNW London, heritage, or commercial. Find the one that fits your project.