Replacing Steel & Timber Frames with Aluminium – A Commercial Upgrade Guide

For many commercial buildings across the North East, older steel and timber window and door frames are now reaching the end of their lifespan.

Rusting steel frames, rotting timber, draughts, poor security and outdated appearances are common issues in warehouses, factories, retail units and commercial properties.

The solution? Modern aluminium glazing systems.

In this guide, we explain why more North East businesses are replacing steel and timber frames with aluminium and what to consider before upgrading.

Why Replace Steel & Timber Frames?

Older commercial buildings were commonly fitted with:

• Single-glazed steel frames

• Timber-framed windows and doors

• Industrial steel access doors

• Outdated glazing systems

Over time, these materials deteriorate.

Common Problems with Steel Frames

• Rust and corrosion

• Cold bridging and heat loss

• Condensation issues

• Heavy, difficult operation

• Outdated appearance
  

Common Problems with Timber Frames

• Rot and warping

• Regular maintenance requirements

• Security weaknesses

• Paint deterioration

• Structural weakening
  

For commercial properties, these issues affect:

• Security

• Energy costs

• Appearance

• Compliance

• Operational efficiency
  

Why Aluminium Is the Modern Commercial Standard

Aluminium has become the preferred material for commercial glazing across the UK — especially for warehouses, industrial units and retail properties.

Strength & Structural Performance

Aluminium is naturally strong and lightweight, making it ideal for:

• Large commercial openings

• Heavy-use entrance doors

• High-traffic access points

• Oversized window spans
  

Unlike steel, aluminium won’t rust.Unlike timber, it won’t rot or warp.

It provides structural integrity without excessive weight.`

Security Comes First

Commercial security is critical.

Modern aluminium systems include:

✔ Reinforced profiles✔ Multi-point locking✔ Heavy-duty hinges✔ Toughened or laminated safety glass✔ PAS24 compliant hardware options

For warehouses and manufacturing units, this is a major upgrade over ageing steel doors.

👉 Learn more about our commercial solutions:https://www.washingtonasltd.co.uk/commercial-glazing

Improved Energy Efficiency

Older steel frames are notorious for cold transfer and condensation.

Modern aluminium systems use:

• Thermal break technology

• High-performance glazing

• Low-E coated glass

• Argon-filled units
  

This significantly improves thermal performance, helping reduce heating costs — especially important for large commercial buildings.

Custom Made to Fit Existing Openings

One major advantage of aluminium is that it can be made to measure.

Whether you’re replacing:

• Steel warehouse doors

• Timber-framed commercial windows

• Industrial service entrances

• Old shopfront systems
  

Aluminium can be fabricated to suit exact dimensions.

No need for extensive structural alteration in most cases.

Custom Colours & Professional Appearance

Aluminium frames can be powder-coated in:

• Black

• Anthracite Grey (RAL 7016)

• White

• Blue

• Any bespoke RAL colour
  

This allows businesses to:

• Match branding

• Modernise tired exteriors

• Create a professional first impression
  

Unlike timber, aluminium doesn’t require repainting every few years.

Steel vs Aluminium – Key Differences

Feature	Steel Frames	Aluminium Frames
Rust Resistant	❌ No	✔ Yes
Thermal Performance	Poor	Excellent
Maintenance	High	Low
Lifespan	Moderate	30–40+ years
Custom Colour	Limited	Any RAL
Security Upgrade	Limited	High-spec options

Aluminium wins in almost every category for long-term commercial use.

Common Commercial Projects We Handle

Across Washington and the wider North East, we regularly replace steel and timber frames for:

• Manufacturing warehouses

• Industrial units

• Car repair and detailing centres

• Retail shopfronts

• Restaurants & hospitality venues

• Office buildings

• Contractors upgrading existing sites
  

Each system is bespoke, secure and professionally installed.

The Upgrade Process

Replacing steel or timber with aluminium typically involves:

1. Site survey and measurements

2. Fabrication of made-to-measure aluminium frames

3. Removal of old frames

4. Professional installation

5. Sealing and finishing
   

Most commercial door replacements can be completed quickly to minimise downtime.

Is It Worth Upgrading?

For most businesses, yes.

Upgrading to aluminium delivers:

✔ Improved security✔ Better thermal performance✔ Reduced maintenance costs✔ Professional modern appearance✔ Long-term durability✔ Increased property value

It’s not just cosmetic — it’s operationally beneficial.

Commercial Aluminium Doors & Windows in the North East

Washington Aluminium Services supply and install bespoke commercial aluminium systems across:

• Washington

• Sunderland

• Newcastle

• Durham

• Gateshead

• South Shields

• Teesside

• The wider North East
  

We work with business owners, contractors and developers on projects of all sizes.

📞 07787 762 575🌐 https://www.washingtonasltd.co.uk

Need Advice on a Commercial Upgrade?

If your steel or timber frames are showing signs of age, we’re happy to assess your property and recommend the right aluminium solution.

Get in touch today for a site visit and quotation.