At a glance
Insulation & AirtightnessSustainable interiorsTriple glazing & fenestration
Areas served: England - Cornwall, England - Devon, England - Somerset, England - Avon, England - Wiltshire, England - Hampshire, England - West Sussex, England - Surrey, England - Berkshire, England - East Sussex, England - Kent, England - Essex, England - Hertfordshire, England - Buckinghamshire, England - Suffolk, England - Norfolk, England - Cambridgeshire, England - Northamptonshire, England - Warwickshire, England - Oxfordshire, England - Shropshire, England - East Riding of Yorkshire, England - Leicestershire, England - West Midlands, England - Glouchestershire, England - Hereford & Worcester, England - Staffordshire, England - Lincolnshire, England - Nottinghamshire, England - Derbyshire, England - Cheshire, England - South Yorkshire, England - Greater Manchester, England - Merseyside, England - Humberside, England - West Yorkshire, England - Lancashire, England - North Yorkshire, England - Cleveland, England - Durham, England - Cumbria, England - Tyne & Wear, England - Northumberland, England - Central London, England - North London, England - West London, England - South London, England - East London, Scotland - Highlands & islands, Scotland - Grampian, Scotland - Central, Scotland - Strathclyde, Scotland - Lothian, Scotland - Borders, Scotland - Dumfries & Galloway, Wales - Clywd, Wales - Gywwedd, Wales - Powys, Wales - Dyfed, Wales - Cardiff, Wales - Glamorgan, Ireland - Northern Ireland Only, Ireland - Republic Of Ireland Only, United Kingdom & Ireland - England, United Kingdom & Ireland - Wales, United Kingdom & Ireland - Republic Of Ireland, United Kingdom & Ireland - Scotland, United Kingdom & Ireland - Northern Ireland
Overview
SILKA Windows is a premium British brand specialising in the design, manufacture, and supply of super-insulated aluminium windows, doors, and rooflights for residential renovation, extension, self-build, and new-build projects across the United Kingdom and Ireland. Developed by New World Developments, one of the UK's and Ireland's longest-established window and door manufacturers, SILKA combines more than 25 years of manufacturing expertise with advanced glazing technology to deliver high-performance, future-ready home improvement solutions.
Operating from a 120,000-square-foot manufacturing facility in Ballymena, Northern Ireland, SILKA manages almost every stage of production in-house—from product design and engineering to manufacturing, glazing, finishing, and distribution. This vertically integrated approach enables the company to maintain rigorous quality standards, improve production efficiency, and provide dependable delivery through its own logistics network and nationwide courier partners.
SILKA has been developed to meet the growing demand for energy-efficient, low-maintenance aluminium glazing systems that support modern architecture and increasingly stringent building performance requirements. The product range includes aluminium windows, bifold doors, lift-and-slide doors, French doors, entrance doors, and rooflights. Each product is engineered to maximise natural daylight, improve thermal efficiency, enhance security, and deliver a contemporary aesthetic suitable for both refurbishment and new-build applications.
A key differentiator is the company's proprietary Thermafill insulating technology, which provides edge-to-edge thermal insulation throughout the aluminium frame. Combined with triple glazing as standard across much of the range, SILKA products achieve exceptionally low U-values, helping homeowners reduce heat loss, improve indoor comfort, and futureproof properties against evolving energy-efficiency standards.
Innovation is central to SILKA's philosophy. The company continually invests in advanced manufacturing technologies, production infrastructure, and product development to improve performance, durability, and sustainability. Its vertically integrated manufacturing model allows it to control quality throughout the supply chain while supporting continuous improvement and technical innovation.
Rather than selling directly through traditional retail outlets, SILKA partners with a network of carefully selected independent installation companies through its SILKAselect installer programme. This approach ensures customers receive expert local consultation, professional installation, and ongoing support while maintaining consistent product quality nationwide.
Today, SILKA has established itself as a leading supplier of premium aluminium glazing systems for homeowners, architects, developers, and trade professionals seeking high-performance, secure, and aesthetically refined products. By combining engineering excellence, advanced thermal technologies, premium manufacturing, and nationwide installer expertise, SILKA continues to support the development of sustainable, energy-efficient homes across the UK and Ireland.
Mission
To design and manufacture premium aluminium glazing solutions that combine outstanding energy efficiency, innovative engineering, exceptional quality, and contemporary design, helping homeowners create comfortable, secure, and future-ready living spaces across the UK and Ireland.
Vision
To be the leading premium aluminium window and door brand in the UK and Ireland by continuously advancing glazing technology, manufacturing excellence, and sustainable home improvement solutions that exceed future building performance standards.
