Allan Brothers Windows - Installed by Bowalker

Allan Brothers windows are made for homes where genuine timber, planning sensitivity and long-term joinery detail matter. Bowalker installs and replaces Allan Brothers timber and Alu Clad windows throughout Sussex and Surrey, using in-house installers from survey to completion.

There are no salespeople, no subcontractors and no pressure, just honest advice, a detailed quote and a finished job backed by Bowalker’s 10-year insurance-backed installation guarantee, with Allan Brothers product warranty details confirmed before work begins.

Call Bowalker on 01444 810 111 to book a free home consultation and see what Allan Brothers windows would do for your home.

What Are Allan Brothers Windows?

Allan Brothers is Britain’s longest-established timber window specialist, founded in 1811 and based in Berwick-upon-Tweed. The company makes bespoke timber and Alu Clad windows for heritage, listed, conservation-area and high-quality replacement projects.

The Allan Brothers range is built around real wood rather than timber-effect uPVC. Timber windows give the material, section detail and joinery character needed on many older properties, while Nordic Alu Clad windows keep timber inside the home and add aluminium protection outside.

Bowalker installs and replaces Allan Brothers windows across Sussex and Surrey, including Crafted Casements, Crafted Sliding Sash, Heritage Casement, Heritage Sash, Dual Turn and Nordic Alu Clad windows. The right choice depends on the property age, planning position, exposure, maintenance expectations and budget.

Real timber for sensitive homes

Listed buildings, conservation-area homes and period properties often suit genuine timber where material, planning and traditional detailing matter.

Joinery Heritage

Allan Brothers was founded in 1811, giving the brand more than two centuries of timber window and door experience.

Timber or Alu Clad choice

Solid timber suits authentic replacements, while Alu Clad gives a timber interior with a powder-coated aluminium exterior for lower external upkeep.

Planning-aware specification

Bowalker may match sash style, frame proportion, glazing pattern and hardware to the age and setting of the property.

No subcontractors, ever

Bowalker’s own advisers, surveyors and installers quote, survey and fit the work, so accountability stays with one team.

Why Bowalker Installs Allan Brothers Windows?

Bowalker chooses Allan Brothers for projects where a standard uPVC replacement would not respect the home, the planning setting or the material value of the original windows. Allan Brothers earns its place for a few clear reasons:

Bowalker customers continue to rate the company highly on review platforms, and the same in-house standard is used on Allan Brothers installations.

Allan Brothers Window Styles Available from Bowalker

Allan Brothers window selection begins with the property type. A Georgian sash window, a cottage casement and an exposed modern home need different joinery details and maintenance planning. The range splits into two families, solid timber windows and aluminium-clad timber windows.

Crafted Casements

Crafted timber casement windows for period homes, rural properties and projects that need genuine wood detailing.

Crafted Sliding Sash

Timber vertical sliding sash windows for Georgian, Victorian and Edwardian homes where the original window pattern needs respect.

Heritage Casement Windows

Solid timber casements crafted for listed buildings and conservation-area homes, available as top hung, side hung and fixed sash.

Heritage Sash Windows

Traditional box sash windows, available with spiral balance or cords and weights operation for period-correct movement.

Dual Turn Windows

Practical timber windows for projects that need easier cleaning, ventilation control or a more flexible opening style.

Nordic Alu Clad Windows

Timber inside, aluminium outside, with opening functions such as fixed, side hung, side guided, top guided, fully reversible and tilt and turn options depending on specification.

Colour and Finish Options Available

Allan Brothers finish options are applied to real timber or aluminium cladding before the products reach the property. Factory finishing gives a controlled paint, stain or powder-coated surface from the start.

The finishes Bowalker supplies include:

Factory paint finishes

Painted timber gives a traditional finish for period homes, cottages and conservation-area replacements.

Natural wood stains

Stain finishes keep more of the timber grain visible where a natural wood appearance is wanted inside or outside.

RAL colour orders

Allan Brothers states that almost all RAL colours may be offered at extra cost, subject to specification.

Different inside and outside finishes

Timber windows may use different internal and external finish plans, subject to the chosen range and order details.

Powder-coated Alu Clad exterior

Nordic Alu Clad windows use an aluminium outer face to reduce external maintenance while retaining a timber interior.

Bespoke finishes, stain choices and Alu Clad colours may affect price and lead time. Bowalker confirms the selected finish, warranty route and maintenance expectations before the order is placed.

Performance and Features of Allan Brothers Windows

Allan Brothers performance comes from made-to-measure joinery, timber selection, glazing specification and factory finishing. It is not a standard PVC-U profile story; the window is specified around the building.

Bowalker specifies these Allan Brothers features around the property:

Real timber construction: Genuine timber gives the material authenticity, frame depth and traditional detailing needed on many period properties.
Alu Clad weather protection: Nordic Alu Clad windows keep wood inside and use aluminium outside for lower external upkeep in exposed locations.
Double or triple glazing: Glazing is specified around the chosen style, opening size, planning needs and performance target.
Secured by Design accreditation: Allan Brothers window products are accredited to Secured by Design, with PAS 24 security specifications available where new-build Part Q requirements apply.

Replacing Your Windows with Allan Brothers

Allan Brothers window replacement is best suited to homes where the replacement must respect material, age and planning detail. When old timber frames fail, a real timber replacement may protect the building character better than a standard uPVC frame.

Bowalker replaces tired timber, uPVC or aluminium windows with Allan Brothers timber or Alu Clad windows throughout Sussex and Surrey. We match the new frames to the property style, planning needs and upkeep level, then remove the old windows once installation is complete.

The signs that Allan Brothers replacement windows may be worth considering include:

Rotten timber with soft sections, decay, cracked joints or frames that need repeated repair.

Paint failure with peeling, flaking or exposed timber that no longer protects the frame.

Draughts around older sashes, casements or frame joints.

Misted glass from condensation trapped between panes in older double-glazed units.

Planning mismatch where previous replacement windows do not suit the age, listing or conservation setting.

Difficult operation from stiff sashes, failed stays, loose hinges or locks that no longer catch correctly.

Warranty: Two Layers of Protection

Allan Brothers warranty information is component-specific, so it should not be simplified into one broad claim. Bowalker sets out the product warranty route and its own installation guarantee separately.

The written quote and order paperwork set out the Allan Brothers warranty details, product specification and Bowalker installation guarantee before installation starts.

Allan Brothers product warranty

Allan Brothers lists warranty periods by item, including 30 years for rot and fungal protection, 10 years for standard RAL paint finish, glazing failure and manufacturing warranty, and 5 years for ironmongery, stained finish, black paint finish and non-standard RAL colours. Bowalker confirms the exact warranty details for your order before work begins.

Bowalker's 10-year installation guarantee

Bowalker guarantees its own workmanship for 10 years, and that guarantee is insurance-backed.

Real Installations: Before and After

Allan Brothers project photos should show the joinery detail, not just the visual upgrade. Timber replacements, sash window work and Alu Clad installations need close-up images of frame sections, glazing bars, hardware and finish quality.

Case studies may explain why timber or Alu Clad was chosen, how the new windows matched the property, and how Bowalker’s in-house team handled the installation.

How Installation Works

Bowalker’s installation process stays simple and in-house from the first visit to the finished job.

Book a free home consultation: One of our advisers visits to discuss the property, look at the existing openings, measure up and answer questions with no pressure.
Receive your no-obligation quote: Bowalker emails a detailed, itemised quote after the visit. Your deposit is fully refundable if the price changes once the job has been surveyed.
Let our in-house team install: Bowalker's own surveyors and installers carry out the work once your windows are ready, protect the work area and remove the old windows when the job is complete.

Get In Touch

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Ready to Install Allan Brothers Windows with Bowalker?

Bowalker installs and replaces Allan Brothers timber and Alu Clad windows throughout Sussex and Surrey. Every installation is handled by Bowalker’s own team and backed by Bowalker’s 10-year insurance-backed installation guarantee.

Call 01444 810 111 to arrange your free, no-obligation home consultation. Bowalker will talk through timber, Alu Clad, glazing, finish and planning details, then provide a detailed quote.

Enhance the comfort, style, and energy efficiency of your home with our premium windows and doors, contact us today.

01444 810 111