Premium Aluminium
Windows & Doors
Sydney

Transform your home with premium, Australian-made aluminium windows and doors. Built to last and competitively priced direct from the source. Whether you’re renovating or building, we make it easy with expert advice, custom sizing and fast turnaround. Visit our Sydney showrooms to explore the range and get a clear, competitive quote.

15+ Years

In Business

Premium Aluminium
Solutions

From sleek sliding doors to classic double hung windows, we offer a comprehensive range of aluminium products to suit every style and budget.

Sliding Doors

Seamless indoor-outdoor living with smooth operation and maximum natural light.

Bifold Doors

Open up entire walls for the ultimate entertaining space and panoramic views.

Awning Windows

Superior ventilation and weather protection for any room in your home.

Sliding Windows

Classic style with modern functionality, perfect for any architectural design.

Double Hung

Traditional elegance with dual sash operation for flexible ventilation options.

French Doors

Timeless sophistication with wide openings and a classic hinged design.

Why Builders & Homeowners
Choose GEM

Premium, factory-direct aluminium windows and doors.
Delivered faster, priced sharper, and backed by real expertise.

Australian Made

All our products are manufactured right here in Sydney, ensuring quality and supporting local jobs.

Wholesale Prices

We sell directly to the public at wholesale prices, cutting out the middleman to save you money.

Fast Turnaround

Standard orders in 1-4 weeks. Need it faster? We offer rush options for urgent projects.

Quality Assured

All products meet Australian standards with full compliance documentation and warranties.

Delivery or Pickup

Flexible dispatch options from our Prestons warehouse. Delivery across Sydney and NSW.

Expert Support

Our experienced team provides guidance from product selection to installation advice.

Orders Completed

50 K+

Sydney Showrooms

Years Experience

15 +

Australian Made

100 %

VISIT US

Our Sydney Showrooms

See our full range of windows and doors in person. Our friendly team is ready to help you find the perfect solution for your project.

Castle Hill

Shop 10, 19 Victoria Ave, Castle Hill NSW 2154
02 9634 2002
02 9634 2525
castlehill@gemwindowsanddoors.com.au
Mon-Fri 8am-4pm, Sat 9am-2pm

Mascot

Kingswood

Minto

Prestons Warehouse

Minto Factory

Not open to the public

GEM Trade Sales

Appointment Only

What Our Customers Say

"Sales staff were excellent and helpful. Windows were good quality and good price. Delivery company delivered doors but would not take them up two steps in the house quoting it was an O H & S issue. Two blokes vs my wife and daughter. The females won hands down."

“Can’t recommend this company enough!! Great prices, great products! Excellent customer service too :)”

“I was recommended to Gem windows and doors and I couldn’t be happier. I was very satisfied with the whole ordering and delivery process. Went very smoothly and my order was delivered on time, which was very important for me. The lady was very helpful with all the questions I had and helped me find the best for my need. Overall, great service. I will re-order again in the future. Thanks!”

“Not the first time we’ve bought from GEM, never had an issue. We had to buy in small batches to manage cash flow and now the project is coming to an end we couldn’t be happier. I imagine people who have never build or renovated have unrealistic expectations. We’ve had hiccups along the way with all tradies, but GEM have definitely been the best at managing the process for us end to end. Definitely recommend!!!”

Doors

Windows

In Stock

Doors

Windows

In Stock

Premium Aluminium
Windows & Doors
Sydney

Premium Aluminium
Solutions