Window Repair Service

At GC Trades, we provide expert repairs and upgrades for aluminium and timber windows across all brands and conditions.

Here are some of the most common window problems we service in residential and commercial properties:

Call us to get your free quote 021 289 1972
Black replacement window lock handle and two broken window locks on white windowsill.

Loose or Broken
Handles & Catches

We repair or replace worn, loose, or broken window handles and catches to restore mechanical integrity, ensure secure locking, and maintain optimal window performance.

Close-up of a window frame with a ladder visible outside, an interior wall, and houses with rooftops and trees in the background.
Close-up of a white window with a metal latch and handle showing from inside.

Worn or Corroded
Hinges & Stays

We replace damaged or corroded window hinges and stays to restore full range of motion, maintain structural alignment, and ensure reliable, long-term function.

Faulty Security Locks & Restrictor Stays

We repair or replace faulty window security locks and restrictor stays to enhance safety, prevent unauthorised access, and ensure compliance with building and rental safety standards.

View through a house window showing a backyard with grass, fallen leaves, a wooden fence, an outdoor bench, and trees with bushes.

Damaged/ Missing Rubber Seals

Worn or missing rubber seals can lead to draughts, leaks, rattling windows, and reduced energy efficiency. GC Tradesmen can replace or repair window seals to restore a proper weather-tight seal, improve insulation, and keep your home comfortable year-round.

Industrial interior with high windows letting in natural light, exposed ceiling beams, and a white brick wall.
Close-up of a black window frame and screen with a view of green grass and white bricks outside.

Manual Shaft & Lever Control Systems Repair

Manual shaft and lever systems are often found in schools, churches, and large buildings to open windows that are hard to reach. Over time, these systems can become stiff, misaligned, or stop working. GC Tradesmen specializes in repairing and restoring these mechanisms to keep windows working smoothly and ventilation controlled.

Blocked / Overflowing Condensation Channels

When condensation channels (or drainage tracks) become blocked, water can overflow into your home — leading to leaks, mould, and damage to sills or walls. GC Tradesmen can clear and repair these channels to ensure proper drainage and protect your windows and interiors from moisture-related issues.

A dining room table with a large floral arrangement in the center, masks on the left, soda bottle, banana, and decorative items. Large window with greenery outside, air conditioning unit on the wall.

Sliding/Bifold Window Issues

Sliding and bifold windows can jam or become noisy due to worn rollers, dirty tracks, or poor alignment. We can repair and adjust them so they open smoothly and seal properly.

White framed window with four panes on a beige house with vinyl siding, reflecting a cloudy sky, trees, and a chandelier inside.
Close-up of a window sill with some dust and dirt, showing a partly foggy and rainy scene outside.

Broken Sash/Awning Windows

Over time, sash and awning windows can stop working properly due to worn or broken parts like hinges, stays, or balances. GC Tradesmen can fix these issues to get your windows opening easily and sealing correctly again.

Misaligned Windows

Windows can become misaligned due to wear, weather, or structural shifts, making them hard to open, close, or seal properly. Our expert team can realign your windows, fix hardware, and restore smooth operation to improve comfort and energy efficiency.

A close-up of a damaged window frame with a hole in the bottom left corner, showing exposed wood and insulation, surrounded by crumpled aluminum foil. The window has a glass pane, and the frame is painted white or light blue.

Rotten Timber Windows

Timber windows are prone to rot over time, especially when exposed to moisture or poorly sealed. Rotten frames not only affect appearance but can compromise window strength, insulation, and security. We can assess the damage and carry out expert repairs or partial replacements to restore the integrity and function of your timber windows.

Modern two-story house with large glass sliding doors, outdoor patio, and balcony with glass railing, surrounded by greenery and a clear blue sky.
Interior of a modern, multi-story residential building with large glass windows, illuminated from inside, decorated with holiday ornaments such as paper garlands, wreaths, and hanging decorations, viewed during evening or early night.

Healthy Homes
Window Compliance

We help ensure your windows meet Healthy Homes standards for proper ventilation, safety, and insulation. Our team inspects, repairs, and upgrades windows so your home stays warm, dry, and energy-efficient.

Window Hardware Modernization

Upgrade your old window hardware with modern, durable components for smoother operation, better security, and improved energy efficiency. We replace worn locks, handles, hinges, and rollers to give your windows a fresh, reliable feel.

Contact us

Mobile:
021 298 2972

Email: info@gctrades.co.nz