Secondary Glazing Specialists
Secondary Glazing Specialists

Crafted energy-saving secondary glazing and insulation for period homes and listed properties.

Mitchell & Dickinson’s CosyGlazing is a unique secondary glazing system that is elegant and effective, with a strong return on investment.

Made of a modern, lightweight equivalent to glass, it’s fixed using magnetic strips so is easy to remove and virtually invisible. Choose a finish to complement your period or listed property.

Our high-quality draught-proofing and insulation solutions for underfloor, ceilings, sloping ceilings and lofts of period properties use naturally energy-efficient and sustainable sheep’s wool.

We also provide a full restoration service for your windows and doors, bringing them back to their original condition, able to both insulate your home and operate with ease.

With the government now announcing Britain will be virtually greenhouse gas free by 2050 and David Attenborough stating that we can all help achieve this goal by insulating our period properties, there is no better time to become part of the solution – and save money on your winter heating bills.

Based in Devon with surveying and operational teams in Bristol, Berkshire and Surrey, we help owners of listed and period properties to make their homes warmer throughout the South of England including the Cornwall, Devon, Somerset, Dorset, Gloucestershire, Bristol, Wiltshire, Berkshire, Surrey, Sussex, Oxfordshire, Warwickshire and Northamptonshire.

Our commitment to you.

We value people and the planet as highly as we value profit.

Our ecological aim is to reduce CO2 emissions, our economic aim is to make profits sufficient to grow a sustainable and secure business, and our social aim is to demonstrate how a happy team work better and happy customers provide more business.

Secondary Glazing Devon

Crafted quality

As a team of craftspeople creating secondary double glazing, high quality draught proofing and insulation, quality is at the heart of what we do

Secondary Glazing Bristol

Energy savings

Our clients always complain that they’re fed up of paying huge heating bills to stay warm in their period property. There is a solution with a strong return on investment…

Secondary Glazing Bath

Meet our customers

From owners of Georgian townhouses to period cottages by the sea, hear about the experiences of some of our clients

Draught Proofing Listed Buildings

Full insulation

Five areas from which your house is leaking heat

Sash Window Restoration and Renovation

Draught proofing

Elegant concealed brushes & hidden seals

Draught Proofing Listed Buildings


Specialist secondary glazing for period homes

Draught Proofing Listed Buildings


Bring your windows back to their former glory

Draught Proofing Listed Buildings

Loft insulation

Sheep’s wool insulation & sloping ceiling insulation

Draught Proofing Swindon, Wiltshire

Additional services

Discover how else we can help

Draught Proofing Listed Buildings

Full insulation

Five areas from which your house is leaking heat