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01473 622555
Tradesupply Windows logo Tradesupply Windows Martlesham Trade Counter · Suffolk
ALuK 58BW · Fabricated by Arkay

Aluminium Windows.
Slim Frames. Supply Only. Trade Prices.

ALuK 58BW aluminium windows, fabricated in Britain by Arkay Windows — standard and flush casements with slim sightlines, plus the matching ALuK 58BD residential door in flush and slimline versions. Made to your sizes, priced for the trade.

Get a Trade Price Standard vs Flush Casement
Fabricated in Britain by Arkay Made to Measure Thermally Broken Profile Collection or Site Delivery
System
ALuK 58BW
Profile Depth
58mm
Casement Styles
2 Std & Flush
Matching Door
58BD

Why Trade Buyers Choose Aluminium

More Glass, Less Frame, Zero Warping

Aluminium's strength lets you run slimmer sightlines and bigger panes than uPVC can carry — and the frames won't warp, swell or fade. That's why architects spec it and homeowners increasingly ask for it by name on extensions, renovations and new builds across Ipswich, Kesgrave, Woodbridge, Felixstowe and the rest of Suffolk.

Our aluminium windows are fabricated in Britain by Arkay Windows on the ALuK 58BW system — a 58mm polyamide thermally broken profile available as a standard or flush casement, in a huge range of single and dual RAL colours. And because the matching ALuK 58BD residential door comes in flush and slimline versions, you can match frames and colours across the whole elevation. All supply only, made to your sizes, at trade prices.

For Installers

Your sizes, your survey, your margin. One system across windows and doors keeps every elevation consistent.

For Builders

Spec the frames early, we manufacture while you build, and deliver to site to suit your programme.

For Confident DIYers

No trade account needed. We'll talk you through measuring, cills and fixing at the counter.

Genuine Trade Prices

Supply only means no installation overhead in the price — just the frames, made to measure.

One System, Two Looks

Standard or Flush Casement?

Both sit on the same ALuK 58BW profile, so performance is a match — the difference is the look. Standard casements sit slightly proud; flush casements close flat into the frame for that clean, architectural finish.

The Workhorse

58BW Standard Casement

The classic aluminium casement — slim, strong and great value. The opening sash sits slightly proud of the outer frame, and it suits everything from rental refits to full-house replacements.

ALuK 58BW standard casement specification
ProfileALuK 58BW · 58mm · polyamide thermal break
Thermal performancePart L compliant U-values as standard
StylesTop hung, side hung, fixed & combinations
SecurityMulti-point locking · internally beaded
ColoursSingle or dual RAL · matt & textured finishes
In plain English: slim aluminium looks at the sharpest price point in the range.

The Architectural Look

58BW Flush Casement

The sash closes perfectly flat into the outer frame, so the whole elevation reads as one clean plane. The look architects draw and homeowners screenshot — a small premium for a big visual upgrade.

ALuK 58BW flush casement specification
ProfileALuK 58BW Flush · 58mm · thermally broken
AppearanceSash closes flush with the outer frame
Thermal performancePart L compliant U-values as standard
SecurityMulti-point locking · internally beaded
ColoursSingle or dual RAL · matt & textured finishes
In plain English: the premium finish that lifts a whole elevation — worth showing every customer.

Complete the Elevation: ALuK 58BD Residential Doors

The matching 58BD residential door comes in flush and slimline versions, sharing the 58BW's profile depth and colour range — so front doors, back doors and windows all line up as one family. Quote them together and the whole house matches.

Price Windows & Doors Together

Supply Only, Start to Finish

How Ordering Works

  1. 1

    Send Us Your Sizes

    Email your sizes and spec, or bring them to the Martlesham counter. You survey — we manufacture to your figures.

  2. 2

    Get an Honest Price

    We quote with lead time confirmed up front. No account needed, no games on price.

  3. 3

    We Manufacture

    Your frames are fabricated by Arkay in Britain on the ALuK 58BW system. Lead times confirmed at quote stage.

  4. 4

    Collect or Delivery

    Collect from the trade counter or book local delivery to site across Suffolk.

What We Need to Quote You

  • Brick-to-brick width & height per window
  • Standard or flush casement
  • Opening layout — top hung, side hung, fixed
  • Colour — single or dual RAL
  • Glass spec — obscure, toughened, solar control
  • Trickle vents — required on most replacements since June 2022

Trade Price Guide

Supply-Only Price Bands

Honest, indicative ranges for standard colours, supply only — your exact price depends on sizes, spec and finish. No installation is included, which is why these sit well below installed retail prices.

Indicative supply-only price bands for aluminium windows
Window Type Typical Size Indicative Range (Supply Only)
Small Casement (1 opener)Up to 600 × 900mm£280 – £420
Standard Casement Most PopularAround 1200 × 1200mm£380 – £560
Large Combination FrameUp to 2400mm wide£600 – £950
Flush Casement UpgradeAny of the above+10 – 15%

Guide prices only, subject to survey sizes and specification, and exclusive of VAT and delivery. Dual RAL colours, specialist glass and matching 58BD doors priced on request. Request your exact price.

Fitting It Yourself?

A Word on DIY Fitting & Building Regs

Aluminium windows are one of the friendlier DIY fits — frames are light for their strength and internally beaded. Measure carefully (we'll show you how at the counter), pack and fix level, and seal properly. Replacement windows in a home must comply with UK building regulations: with a supply-only purchase you'll need Building Control sign-off or a registered installer.

Prefer full supply and installation? Our sister company Homestyle Windows UK has its own showroom in the same building here at Martlesham — or we can recommend trusted local fitters who are customers of ours.

Visit Homestyle Windows UK Ask Us to Recommend a Local Fitter

Aluminium Windows FAQs

Questions the Trade Asks Us

Do you install aluminium windows?

No — Tradesupply Windows is supply only. We manufacture to your sizes for you or your installer to fit. For supply and installation, our sister company Homestyle Windows UK is in the same building at Martlesham, or we can recommend trusted local installers.

Which aluminium window system do you supply?

Our aluminium windows are fabricated by Arkay Windows on the ALuK 58BW system — a polyamide thermally broken profile in standard and flush casement styles, with the matching ALuK 58BD residential door in flush and slimline versions.

What's the difference between flush and standard casements?

A standard casement sits slightly proud of the outer frame; a flush casement closes flat into it for a cleaner, more architectural look. Both run on the same 58BW profile — flush carries a small premium.

Are aluminium windows thermally efficient?

Yes. The 58BW profile is polyamide thermally broken and achieves Part L compliant U-values with standard double glazing, with lower values available depending on the glass you spec.

What colours can I have?

A huge range of single and dual RAL colours — anthracite grey outside, white inside is the most requested combination — plus matt and textured finishes.

What's the lead time?

Aluminium windows are made to order; lead times are typically shorter than bifolds and confirmed at quote stage. Call 01473 622555 for current lead times.

Can I get a matching aluminium door?

Yes — the ALuK 58BD residential door pairs with the 58BW window in flush and slimline versions, so frames and colours match across the whole elevation.

Get Your Price

Request a Trade Price on Aluminium Windows

Send your sizes and spec below, email [email protected], or call 01473 622555. We'll come back with an honest price and a confirmed lead time — usually the same working day.

  • Tradesupply Windows, 7 Betts Avenue, Martlesham, Ipswich IP5 3RH
  • Mon–Fri 7:00am–5:00pm · Sat 8:30–11:00am · Sun closed
  • Or drop into the showroom and see the products in person.

Aluminium Window Quote Request

Rough sizes are fine to start — we'll firm everything up before manufacture.

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