E13 Windows - Cascata - Office with a view

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Working With Us

We understand accurate specification and detailing are key elements to ensuring projects meet performance, budget and time-frame expectations.

As an architect, you want to ensure that you select the best and most appropriate products for your project.

At E13 Windows, we make things easy for you with our digital resources, specification documents and trusted brands.
And, of course, our top-of-the-line window and door suites will give any project the edge, whether it be a multi-million dollar home or a commercial building.

CAD Resources

We understand the importance of accurate specification and detailing. That’s why we offer you free and easy access to a complete range of CAD resources for our window and door products.

Our large database of drawings allows you to mix and match the products that you want, add cladding, change wind zones, to easily filter to the exact detail required for your spec! The ease of use and up-to-date detailing means you’ll be able to provide certainty that what you have is accurate – and hopefully receive fewer questions from your client, the builder or consenting authority.


Masterspec is New Zealand’s leading specification system. The Masterspec specification documents provide a structured template for everything you need to think about when specifying our window and door systems.

Masterspec can be used for commercial, industrial and larger residential projects. The standard version has been designed specifically with the New Zealand construction industry in mind.


We’re passionate about developing products and working on projects that are sustainable. For architects, this translates to being able to select from a range of products that are well designed, innovative, and good for the environment.

Our industrial strategy is centred around the principles of lean manufacturing. We are rigorous in selecting suppliers who embody our values, and adopt green policies that are consistent with our own. Wherever possible, we use zero or low VOC products.

Events & Learning

We partner with research and consultancy organisations in the construction industry to offer informative seminars and talks, where you can learn more about what we do and the latest industry developments.

Performance Docs

To help you better understand the capabilities of our product ranges, you will find a range of documents available below, covering warranties and compliance through to product sizes limitations and thermal performance.

Technical Support

Our CAD resources and Masterspec details are designed to help you select the right products for your project. However, when you require some help finding what you’re after, or need some sound advice on which projects to use, you can always contact us and we’ll provide you with the suite recommendation, the accompanying CAD details and the calculations in a timely manner.

Sophisticated & Stylish

Send Us A Message

Whether it's residential or commercial, we've got high-performance glass solutions and resources to meet your project demands.

Get in touch and together we can excel your designs.