“Allan Bros

Founded in 1811, Allan Brothers is one of Britain’s longest established window specialists and for over 200 years we have enjoyed an enviable reputation for quality, craftsmanship and service.
In 2007 we became part of the Inwido Group, Northern Europe’s leading supplier of home improvement products and today we provide customers with bespoke timber windows and doors.

More Information

Timber Windows Solutions

Vertical Sliding Sash

Cords & Weights

VSS CW closed

A modern Double Glazed version of the traditional vertical sliding window.

Vertical Sliding Sash

Slide & Balance

VSS SB open

Double Glazed Sashes slide by means of pre-tentioned springs on either side.

Vertical Sliding Sash

Slide & Tilt


Double Glazed Sashes Slide by means of pre-tensioned springs on either side. Sashes can be tilted inwards to facilitate cleaning.

Dual Turn



Double Glazed casement window with the appearance of a vertical sliding sash.



High performance Double or Triple Glazed storm proof casement window. Top or Side Hung.

System 2000


Double or Triple Glazed flush casement window. Top or Side Hung.



Double or Triple Glazed flush casement window. Top swing – fully reversible.



Double or Triple Glazed high performance range of Tilt and Turn Windows and Doors.
Timber or Alu Clad.

Alu Clad Window Solutions

Delta Combi-Al

delta combi-al

Triple glazed high performance casement window.
Top or Side hung.



Double or triple glazed flush casement windows and doors.
Top or Side Hung.


IV-UNI windows and balcony doors

Double or triple Glazed tilt and turn windows and door range.

Door Solutions

All Allan Brothers Doors are supplied as door sets including frame, door, glazing, locks and handles.


Entrance Doors Scotdoor

Double Glazed composite entrance doors secured by design options.

French Doors

Double or Triple Glazed hinged outward and inward single or double leaf.A-series, Horizont, IV-UNI.

Sliding Patio Doors

optiwood lift and slide patio doors
Double or Triple Glazed Sliding patio doors. 2 – 6 leaf configuration. Including flying, mullion option.
Timber & Alu clad, Thermo HS, Optiwood., Horizont, Eco Slide

Request a Quote, Call Back or Brochure

Simply select one of the options below



Client Testimonials


Latest News

Facts About The Inwido Group