Retrofit Double Glazing Nelson & Marlborough
Book a free no obligation consultation with one of our friendly sales team.
Double glazing specialists with 20+ years experience
New Zealand owned and operated & proud to be a part of the healthier home’s movement.
Retrofit Timber Frames
Retrofit Timber Frames
A pioneering, reliable and simple process of removing your existing single glazed panes from your timber windows and doors, then installing new high performance thermally insulated double-glazed glass into your existing frames.
Retrofit Aluminium Frames
Retrofit Aluminium Frames
We can install Thermoglazed units into any existing aluminium frame of any size or shape of door or window, and with any finish. We provide you the most professional and reliable system available on the market we guarantee it stands the test of time.
Retrofit Double Glazing For Timber Windows
Retain the look and feel of your character home while making it warmer, quieter and more comfortable.
We fit Thermoglaz units into existing timber windows of any size or shape, including difficult lead lights and feature windows or doors.
Retrofit Double Glazing For Aluminium Windows
Retain the look and feel of your character home while making it warmer, quieter and more comfortable.
The more single glazed glass area you have, the higher your energy loss. Thermoglaz has pioneered the development of specialist extrusions for double glazing aluminium windows and doors, allowing homeowners improved warmth, dramatic noise reduction and substantially less condensation.



