Heritage Sash Upgrades

Retrofit Double Glazing for Timber Windows

Upgrade your Melbourne heritage home with slimline double glazing retrofitted directly into original timber sashes—no replacement required.

Why Retrofit

Modern Insulation, Historic Character

Keep your original timber windows while improving year-round indoor comfort.

Preserve Original Sashes

Year-Round Climate Control

Acoustics and improved saftey

Retain historic Victorian, Edwardian, or Federation timber frames without altering your home's exterior aesthetic.

Enjoy warmer Melbourne winters and cooler summers with high-performance thermal insulation and reduced draft infiltration.

Dramatically cut outside traffic noise while protecting your home

Step-by-Step

How Our Double Glazing Works

We carefully modify and reglaze your existing timber sashes to accept slimline double-glazed units.

• 01 Assess
• 02 Remove
• 03 Modify

Frame & Sash Assessment

Careful Glass Removal

Precision Sash Rebating

We thoroughly inspect your existing timber sashes, balances, and joinery to confirm structural suitability. Not all sash windows can or should be double glazed

Original float glass is carefully removed without damaging legacy timber profiles or heritage moldings.

Internal timber rebates are routed to exact depths required to house slimline double-glazed glass units.

• 04 Install
• 05 Service
• 06 Finish

Slimline Glazing Installation

Balancing & Draught Sealing

Authentic Heritage Result

High-performance slimline double-glazed units are glazed into place maintaining period sightlines.

Counterweights are re-balanced and perimeter brush seals are installed for smooth, draught-free operation.

Your finished windows retain true traditional appearance while offering modern thermal and noise performance.

Common Questions

Heritage Double Glazing FAQs

Expert guidance for period home owners across suburban Melbourne.

Are slimline units suitable for heritage overlays?

Can double-hung sash windows still operate smoothly?

Do we paint the windows after glazing?

Yes. Slimline double glazing is engineered to fit within original timber glazing bars and narrow rebates, preserving historic compliance.

Absolutely. We recalibrate sash weights and install new cords or spiral balances so heavier glazed sashes glide effortlessly.

We do not offer any painting services. A third party painting contractor must be used to ensure longevity of the dgus.