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Green Glass Factory101 Ways to Go Green
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Modern house with large Smartwin timber-aluminium passive house windows at dusk

Where Glass
Meets Craft

The right windows for your project. Sourced, specified, delivered.

Green Glass Factory connects architects, developers, and homeowners with the world's finest window systems. We source PHI Class A certified timber-aluminium products that meet the most rigorous passive house standards on the planet.

Based in Riga, Latvia, we guide every project from first consultation to final delivery. We handle the complexity so you don't have to: specification, procurement, logistics, and support across Europe and North America.

Smartwin passive house certified timber-aluminium windows on a Nordic home in winter
About Green Glass Factory

We find the best.
You build with it.

Founded in Riga, Latvia, Green Glass Factory was built on one belief: that great buildings deserve great windows and finding them shouldn't be complicated. We partner with the world's leading certified manufacturers so our clients never have to compromise.

We're not a factory. We're the people who know exactly where to go, what to specify, and how to get it to your project without the headaches.

The windows we source are PHI Class A certified, achieving a minimum heat loss of 0.52 W/m²K, among the most rigorous energy performance standards in the world. Every product is specified to your project.

From first conversation to final delivery, we handle specification, procurement, and logistics for clients across Europe and North America.

Product Collection
Smartwin timber-aluminium sliding windows in modern interior
Windows
RAICO glazed roof system at Herbārijs bar, Riga rooftop winter garden
Glazed Roofs & Facades

PHI Class A certified windows, glazed facades, and intelligent shading. Sourced, specified, and delivered to your project.

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Modern house with WAREMA external venetian blinds at dusk
Shading Systems
Product Collection

PHI Class A certified windows, glazed facades, and intelligent shading. Sourced and delivered to your project.

↳ GET A QUOTE
Smartwin timber-aluminium sliding windows in modern interior
Windows
RAICO glazed roof system at Herbārijs bar, Riga rooftop winter garden
Glazed Roofs & Facades
Modern house with WAREMA external venetian blinds at dusk
Shading Systems
O360 round window in finished timber interior with garden view
New Product

O360

Premium Round Window System

A fixed circular window engineered for timber and CLT construction. Delivered as a complete system with pre-fabricated reveal lining, ready to install.

Few manufacturers make them. We source and deliver them.

500mm to 1500mm diameter
Triple glazed as standard
8 to 10 week lead time
Configure Your O360 →
Project Estimate

Estimate Your Project

Configure your windows and receive an indicative price range in minutes. Add as many as you need, then share the estimate with your team.

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Featured Projects

Built across Europe

6 projects
Private House in Langstiņi
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Private Residence · Latvia

Private House in Langstiņi

WindowsEntrance doors
Herbārijs Bar
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Commercial · Riga, Latvia

Herbārijs Bar

Glazed facades
Ezernieki Private House
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Private Residence · Latvia

Ezernieki Private House

WindowsEntrance doorsGlazed facadeShading
Viljandi Private House
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Private Residence · Estonia

Viljandi Private House

WindowsSliding systems
Modern Private House
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Private Residence · Latvia

Modern Private House

WindowsSliding doors
Villa Skoghem
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Private Residence · Åre, Sweden

Villa Skoghem

WindowsEntrance doors
Start a Project

Where vision
meets execution.

Tell us about your project. We'll find the right system, handle the specification, and get it to you, without the complexity.

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Private House in Langstiņi
Start a project →
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