Welcome to Apex Windows

Apex Windows is an old company with a new name. We began manufacturing Altherm Window Systems in June 2017 to enable us to provide a complete product offering to homeowners but our experience in the industry dates back much further. 

We are a forward thinking and passionate company always looking for the best solution for our customers whether you need one window or solutions for a large scale commercial project or an architectural home. 

Our core business is supplying house lots of new and replacement joinery to the greater Central North Island from Tauranga to Hawke's Bay and around Mt Ruapehu. 

Our staff are ready to help you make informed choices about your windows and doors and what we can offer your home - call us today to discuss your needs. 

For more information on our product range, visit the Altherm website

Altherm Windows, Doors and Glass brochures

Altherm Windows & Doors

A comprehensive brochure that showcases all products in the Altherm range.

Entrance Doors

New Zealand’s largest range of entrance doors. The defining feature of your home.

Klima Series

Klima Series is an innovative range of uPVC windows and doors optimised for New Zealand conditions, based on premium Northern Hemisphere design.

AGP - State of the art glass

New Zealand's leading double-glazing technology

Introducing ThermalHeart+®

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Did you know 35-50% of a home’s heat is lost from its windows and doors?

Introducing ThermalHeart+®, a range of code-meeting, industry-leading, thermally efficient products designed and made right here in New Zealand for exactly how we live.

Contact us to discuss your options, or visit the website to learn more about the ThermalHeart+® range.

ThermalHeart+®️ components

The ThermalHEART® polyamide barrier insulates the frame of the window system, separating warm and cold areas. Using clean, modern lines, these frames provide high performance in extreme weather conditions. ThermalHEART® frames deliver almost double the thermal performance of standard aluminium windows and doors1

Explore ranges

The ATS-Architectural Thermal Spacer® reduces the transfer of hot and cold temperatures. Argon gas creates an additional barrier to heat loss and improves insulation. Solux-E® is a low emissivity (Low-E) coating that reduces heat loss in winter and over-heating in summer. It protects your home's interior while providing a similar clarity to clear glass.

Explore state-of-the-art glass

The Centrafix™ installation method recesses the joinery into the building wall, aligning the insulation elements - wall, window frame, glazing – to prevent cold air from circulating around the frame. This New Zealand designed innovation increases the thermal performance in your home by over 20%2 (see here for technical details).

Discover Centrafix™

1 Comparison figures are based on complete thermal modelling of an average house lot of Metro Series ThermalHEART® products with The AGP System® double glazing using the WEERS modelling methodology. The benchmark figures were calculated by modelling the same average house lot of products using the equivalent non-thermally broken products glazed with standard double glazing. A “standard aluminium window or door” refers to a non-thermally broken aluminium frame with standard double glazing.

Centrafix™ comparison figures are based on complete thermal modelling of an average house lot of products installed in 90mm timber framing. The standard installation benchmark was calculated by modelling the same house lot of comparable products using a typical E2/AS1 cavity construction installation on 90mm timber framing.

Sustainability Accreditations

Being part of the country's largest supply chain of manufacturing windows and doors, we believe we have a responsibility to improve the way we do things and reduce our environmental impact.

We're proud to supply product from APL Window Solutions, our ranges meet a number of sustainability benchmarks.

Learn more about APL's sustainability initiatives.

Revitalise your home with new windows and doors

Are your windows and doors are letting in a draught, not locking properly, water damaged, noisy, or not as aesthetic as you'd like?

Whether you're undertaking a full home renovation or prioritising changes to your home that will have the biggest impact, updating the windows and doors in your existing home is a proven way to increase the comfort, aesthetics, and value of your home.

Say goodbye to the poor performance and on-going maintenance of your aging joinery. New windows and doors can change the way light, sound, and fresh air move in and out of your home.

When it comes to upgrading the windows and doors in your home, there are two options we can custom make for your needs, each with their own benefits. 


Update Options

Replacement windows and doors

Replacement windows and doors

Existing joinery is removed entirely and a new window or door and framing structure is installed allowing you to completely change the colour, style and configuration.
Replacement windows may be a good option if:

  • You’d like to completely change the size and shape of your windows and doors
  • Your window frames or sills are in poor condition or show signs of rot

Insert windows

Insert windows

In this method, a new window is inserted into the existing timber window frame allowing you to update the colour and configuration of your windows while retaining the character of your home with minimal disruption to your home.
Insert windows may be a good option if:

  • Your wooden joinery is a bit draughty, stiff to open and close but in reasonable condition
  • You’d like to retain the existing character of your house
  • You’d like to improve the function and thermal performance of your joinery

Update for a warmer, healthier, more efficient home

Updating your windows and doors is an opportunity to bring the thermal performance of your joinery up to current building code standards and enjoy a healthier home.

A healthy home is warm, comfortable, and cost efficient to run with minimal impact on the environment, not to mention your family will experience greater wellbeing and productivity.

In order to achieve a healthy home, thermally efficient design and product choice are important; consider thermally efficient windows and doors like:

Choose the right colour and surface finish for you

It is important that you choose the right product for the right application to ensure the life of your surface finish, and in some cases that your windows and doors are covered under their warranty.

Our powdercoat colours are proudly supplied by Dulux Powdercoatings.

Powdercoating

Duralloy® +PLUS is designed for:

  • Residential buildings and light commercial, less than 4 levels
  • Properties greater than 10 metres from high tide level.

Offers a 15 year film and colour integrity warranty.

Popular colours

The colours shown are an onscreen guide only and no guarantee can be given that they will be an exact colour match for the finished product. View our physical swatches for an exact match.

Duralloy +PLUS

Appliance White Matt 20S1364M

Arctic White Matt 20S1358M

Black Matt 20S9041M

Canvas Cloth Matt 20S7830M

Charcoal Matt 20S9219M

Flax Pod Matt 20S9218M

Ghost Grey Matt 20S7829M

Gravel Matt 20S7824M

Grey Friars Matt 20S7809M

Ironsand Matt 20S8383M

Karaka Matt 20S6446M

Lichen Matt 20S6449M

Matt Permanent Green 20S6540M

Matt Silver Pearl 21P7831M

Metro Coal Dust Matt 20S7807M

Metro Electric Cow Matt 21P8395M

Mist Green Matt 20S6475M

New Denim Blue Matt 20S5392M

O’Keefe Grey Matt 20S7868M

Off White Matt 20S3240M

Palladium Silver Matt 21P7136M

Sandstone Grey Matt 20S7807M

Scoria Matt 20S4382M

Slate Blue Matt 20S5403M

Titania Matt 20S2249M

Warm White Pearl Matt 21P1367M

Window Bronze Matt 21P8394M

Windsor Grey Matt 20S7823M

Protexture

Protexture Appliance White Flat 20T1274F

Protexture Arctic White Flat 20T1342F

Protexture Black Flat 20T9215F

Protexture Charcoal Flat 20T9081F

Protexture Flaxpod Flat 20T9225F

Protexture Grey Friars Flat 20T7167F

Protexture Ironsand Flat 20T8406F

Protexture Metro Silver Pearl Flat 21T7852F

Protexture Sandstone Grey Flat 20T7156F

Protexture Titania Flat 20T2068F

Protexture Warm White Pearl 21T2075F

Protexture Windsor Grey Flat 20T7590F

Anodising

Anodised finishing is a highly popular choice for architectural projects, and is a durable and colour fast technology that offers an alternative to powdercoating. 

As for colours and film thicknesses, there are plenty of options: Silver, in 12 and 25 microns. Bronze in light, medium or dark, 12 and 25 microns. Black, 25 microns only. Champagne, in 25 microns only. 

For properties in coastal, industrial or other corrosive environments, 25 microns is recommended, and may even be required to qualify for a warranty. (Note: the anodised coating has a 10-year warranty for 12 micron anodising, and 20 years for 25 microns.)

Note: when you are choosing your aluminium joinery colour, always assess the colour in natural light using an aluminium colour swatch. We are able to provide you with the colour swatch samples upon request. 
Anodising is unavailable in Residential ThermalHEART®.

Apex Windows

1 Rakanui Road, Taupo 3378

For more information on our window & doors product range, visit the Altherm website