Mordialloc, Melbourne VIC · Glass sunroom · 5.5m × 3.2m

Keeping the timber deck was central to this Mordialloc project. Furite Outdoor Living enclosed the existing outdoor area with a light-coloured aluminium frame, a sloping glass roof and sliding glazed windows. The 17.6m² nominal footprint now provides a sheltered place to sit and enjoy the backyard, with the original timber flooring and bench seating retained.

Completed Mordialloc glass sunroom with sliding windows, a sloping glass roof and retained timber deck
Completed: a glass-roof sunroom around the retained timber deck and benches in Mordialloc.

Project Background

The deck beside this Melbourne home already had a pleasant garden outlook and built-in seating, but no overhead or side enclosure. Wind, rain and direct summer sun limited when the family could use it. The brief was to make the space more useful across the seasons while keeping the character of the weatherboard exterior and the connection to the backyard.

Open timber deck with built-in benches beside a Mordialloc weatherboard home before enclosure
Before: the open timber deck, seating and garden outlook that the homeowner wanted to retain.

Client Requirements

  • Retain the existing timber deck as the floor of the new enclosure.
  • Keep daylight and garden views instead of closing the space with solid walls.
  • Reduce exposure to wind and rain and improve thermal comfort.
  • Include sliding windows and insect screens for adjustable ventilation.
  • Create a flexible setting for relaxing and entertaining, with framing that suits the home’s light-coloured cladding.

Materials and Dimensions

Specifications for this Mordialloc sunroom
Location Mordialloc, Melbourne, Victoria
Overall size 5.5m × 3.2m
Nominal footprint 17.6m²; internal usable space depends on the framing and layout
Eaves height 2.4m
Roof slope 5° pitch
Frame Light-coloured aluminium framing
Window glazing 5+20A+5 double-glazed Low-E toughened glass: two 5mm panes with a 20mm sealed cavity
Windows Aluminium sliding windows with insect screens
Roof Toughened glass roofing with sealed junctions
Floor Existing timber deck retained

Our Solution

Work with the deck and the home

The enclosure follows the existing deck area rather than replacing it with a new floor. Light-coloured aluminium members sit alongside the weatherboard wall, and the original bench seating remains part of the room. This gives the new enclosure a clear connection to the outdoor space the family already knew.

Bring daylight through the roof and windows

A glass roof and large glazed window sections retain views of the sky and garden. The roof’s 5° slope and sealed junctions form part of the weather-protection design. Glass roofing admits sunlight as well as daylight, so shading and ventilation remain important considerations for summer use.

Use Low-E double glazing and opening windows together

The sealed cavity and Low-E coating help reduce heat transfer through the window glazing compared with ordinary uncoated single glass. Sliding windows let the household adjust airflow, while insect screens allow screened openings to be used with fewer insects entering. Whole-room comfort also depends on the roof, seals, shading and weather.

Product illustration of insulated Low-E glass units, shown as a material reference
Material illustration: an insulated Low-E glass unit. This is a product reference image, not a construction-stage photograph or a photograph of the installed window.

Completed Result

The open deck is now a glazed sunroom with its timber floor, benches and backyard outlook still visible. The enclosure provides a more sheltered place for everyday sitting and entertaining, and the sliding windows allow it to open to fresh air. The completed site photograph shows how the light frame and transparent roof sit against the existing house.

The main change is practical: the family can use the former open deck with more control over wind, rain and ventilation.

Planning a Similar Sunroom

Price and installation timing depend on the site, dimensions, glazing, roof specification and approvals. A site measure allows us to prepare a tailored proposal. Before starting a new project, confirm the applicable building and planning requirements with your building surveyor and the City of Kingston. See the council’s building application guidance.

Plan a Sunroom in Mordialloc

Explore our custom sunrooms in Melbourne to compare roofing, glazing and opening options. For another local layout, see our Mentone aluminium sunroom or the Black Rock deck enclosure. Contact Furite Outdoor Living to arrange a free site measure and discuss your own deck.

Frequently Asked Questions

Can a sunroom be built around an existing timber deck?

This Mordialloc project retained its existing timber deck. Suitability must be assessed for each property, including the supporting structure, connections, condition and proposed enclosure loads.

What glazing was used in this 5.5m × 3.2m sunroom?

The windows use 5+20A+5 double-glazed Low-E toughened glass: two 5mm panes with a 20mm sealed cavity. The roof is toughened glass at a 5° pitch. The window specification should not be assumed to describe the roof glass build-up.

How do I confirm costs and permits for a Mordialloc sunroom?

Request a site measure and an itemised quote for your proposed design. Confirm building and planning requirements with your building surveyor and the City of Kingston before work begins; requirements depend on the property and proposed work.