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Why Become A Glideline Trade Parter

If you're a professional installer, retailer, or developer looking to offer something better than the same aluminium doors and windows seen in every other showroom, Glideline is your opportunity to stand out. Our products are exclusive, enhanced, and built with the installer in mind.

We’re Not Just a Manufacturer – We Used to Install Too

We understand your challenges because we've faced them ourselves. Glideline began as an installation company before moving into manufacturing for the trade. That experience has shaped how we support our trade partners. We know what it takes to sell to homeowners, manage expectations, and deliver a great result on site.

Our setup is built to serve the installer. From quoting to delivery, everything is designed to help you move faster, win more work, and deliver better installations.

And because we used to manufacture and install, we know all-too-well the product quality discerning homeowners expect.  That is why our products have flawless manufacturing and glass quality.  We also ensure the best possible powder coated or special finishes, and our products are professionally delivered fully protected so they are pristine through every stage of their journey to you.

The Glideline Product Range Stands Apart.

Many system companies and trade manufacturers supply the same doors and windows to hundreds of installers. The result? Nothing to differentiate your business.

At Glideline, we’ve focused on making better products that offer you something different to sell—and that your customers won't find in every showroom.

Our entire product line is based on the Cortizo system, but we don’t fabricate to standard spec like other Cortizo fabricators. We re-engineer, enhance, and improve and add unique features you won’t find with other products.

Here’s what you get with Glideline:

  1. GS15 Sliding Door: The slimmest aluminium sliding door in the UK at just 15mm. Uniform sightlines all round. Flush stacking. Concealed handles. Stainless steel track and rollers. Made for minimal, high-end glazing projects.

  2. GS20 Sliding Door: 20mm interlock with upgraded features. Flush stacking. Enhanced weather protection. Better drainage. Improved build quality over standard Cortizo sliders.

  3. GB49 Bifold Door: Based on the Cortizo Bifold Plus. Slimmer frames. Better thermal performance. Upgraded components. Matching doors available across your project.

  4. GW70 and GT70 Windows: Casement, tilt & turn, shaped and serving windows. Inward and outward opening. All made to match our doors in sightline, finish, and styling. Up to 1800mm wide casements. U-values as low as 1.0 W/m²K.

  5. Frameless, Box and Oriel Windows: Give your customers the near frameless window experience with these advanced windows, designed to create a focal point and wow-factor.

Every product we offer is different from the mainstream. Your customers won’t see them everywhere, and that helps you close more sales.

Built Around the Needs of the Trade 

As your supplier, we focus on getting things right first time.

Everything we do is based on giving you dependable products with a strong story you can sell. 

Stand Out in a Crowded Market with Glideline as your Partner.

With Glideline, you’re offering more than just aluminium windows and doors. You’re offering:

We support showrooms, developers, and installation teams that want to offer something more exclusive, technically advanced, and commercially viable. 

Join Our Trade Network – Talk to us Today

We work with experienced and forward-thinking installers across the UK. And we’d love to work with you if you are a new business wanting to provide the best possible aluminium windows and doors.

If you want a product range that gives you an edge, backed by a manufacturer who understands your day-to-day, we want to hear from you.

Arrange a factory visit, see the range in person, and find out how we can help you win more business. Contact us to learn more or to join the Glideline trade network today.

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