The Heritage Glazing Authority

We invented ultra-thin double glazing for listed buildings.

Complete Conservation Service

From planning applications to final installation, we're with you.

Unmatched Certification Standards

One of only two UK companies holding full BS EN 1279 Parts 1-6 certification.

Authentic Slim Sightlines

Preserve architectural integrity with 6mm sightlines – the slimmest available.

Expert Knowledge

Technical Excellence for Heritage Projects

We don’t just meet standards; we dictate them. Armed with BS EN 1279 Parts 1-6 certification – including the elusive Parts 2 and 3 – we are one of only two UK companies qualified to this elite level. Our technical experts provide the pinpoint performance data, rigorous specifications, and practical installation mastery that listed buildings demand.

Whether you are safeguarding a Grade I landmark or a sensitive conservation site, specify with the confidence that only the industry leader can provide.

Technical Resources

Unlock our definitive library of product specifications, installation blueprints, and certification credentials to fortify your project’s success.

Request Your Technical Quote

Contact our knowledgeable team today to discuss specifications, performance requirements, and obtain competitive pricing for your project.

Our Technical Services

We offer exhaustive technical backing to ensure your heritage projects surpass every performance and compliance hurdle.

Expert Consultation

Specialist guidance on heritage glazing regulations and compliance requirements.

Performance Analysis

Detailed U-value calculations and thermal performance data for accurate specifications.

Installation Support

Comprehensive fitting guidance and approved glazing method documentation available.

Quality Assurance

BS EN 1279 certified manufacturing ensures reliable, compliant heritage units.

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The SlimLite™ Standard

SlimLite provides complete technical support for trade professionals working on heritage projects. From the first specification to the final installation, our team provides the definitive word on conservation regulations, product physics, and approved fitting craft.

We understand that listed building work is a high-stakes honour; we provide the ironclad documentation and guidance you need to deliver on time, every time.

Frequently Asked Questions

Find answers to common technical questions about our heritage glazing specifications, certifications, and performance data.

"Great service along with a quality product, also the best advice on the different types of the slimlite range."

Martin

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"Great high quality product, does exactly what it is supposed to i.e. significant improvement in thermal insulation and noise reduction. I had an issue with the order which was immediately resolved. Would thoroughly recommend."

Duncan

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"Experts in their field, a well run family business. Pleasure to deal with. Good communicators and they produce a quality product."

James Sunderland

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