Avondale Heights — Aluminium to uPVC Door Upgrade
The homeowners in Avondale Heights were living with a frustrating problem: their living area was freezing cold during Melbourne’s winter months, despite running the heating constantly. The cause was their aging single-glazed aluminium sliding doors. Standard aluminium is one of the most thermally conductive framing materials available — with a frame U-value between 4.5 and 7.0 W/m²K, it acts as a direct thermal bridge, pumping cold air in during winter and heat in during summer. The old doors had also developed worn seals and gaps, allowing cold draughts to flood the room. Smart Doors & Windows was called in to assess the situation and recommend a long-term solution.
The Problem
Single-glazed aluminium sliding doors created cold spots, condensation, and draughts — making the living room uncomfortable even with heating at full capacity.
Our Solution
Old aluminium doors replaced with uPVC double-glazed French doors featuring Low-E glass and argon-filled cavities, achieving a U-value as low as 1.4 W/m²K.
Thermal Performance
uPVC frames eliminate cold-bridging. Multi-point locking compresses weatherseals along the full perimeter, creating an airtight closure that stops draughts completely.
Energy Savings
Upgrading to double-glazed uPVC can save $300–$600 per year on heating and cooling — one of the smartest long-term upgrades for any Melbourne home.
Before: Old Aluminium Sliding Doors
The original aluminium sliding doors had been in place for decades. The single-glazed panels offered virtually no insulation, and the worn aluminium frames conducted cold air directly into the living space. Visible gaps around the seals allowed draughts in, while condensation regularly formed on the glass surface during cold mornings — a clear sign of poor thermal performance.
Installation in Progress
Our team carefully removed the old aluminium door frames and prepared the opening for the new uPVC system. The installation involved precise measurement and fitting to ensure an airtight seal between the new frame and the existing brickwork. Our installers worked methodically to minimise disruption to the household while ensuring every component was fitted to specification.
After: New uPVC Double-Glazed Doors
The transformation speaks for itself. The new uPVC French doors feature sleek charcoal-grey frames that complement the home’s brick exterior, double-glazed panels that flood the room with natural light while blocking heat transfer, and multi-point locking hardware for superior security. The homeowners reported an immediate and dramatic difference in room temperature — the living area finally stays warm through winter without the heater running constantly.
TESTIMONIALS
Doors & Windows Opened to Trust!
What our customers say about us
“I’ve dealt with a few contractors before, but this team really impressed me with how organized, punctual, and respectful they were the entire time.”
“I was worried about the mess but they left everything spotless and even vacuumed up after themselves—respect!”
“Their attention to detail was next level, and you can tell they take real pride in their work.”
“These aren’t just windows—they’re a whole vibe upgrade for my house and I’m here for it.”
“I had a lot of questions and they answered every single one with patience and clarity—made the decision easy.”
“I appreciated the detailed consultation and clear guidance provided by the Smart Doors team; the final result is a flawless installation that enhances my home’s overall look.”
“I enjoyed the detailed consultation and expert installation, which resulted in windows and doors that are both visually appealing and functionally superior.”
“Hopefully it will continue smoothly in the future.”
“Very nice and beautiful, makes me comfortable staying there, 5 stars for this place.”
“Good.”