Warmer, Quieter & Safer

Secondary Glazing Installers throughout Northern Ireland

Years Experience

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Product options

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The Glazing Experts

Window Glazing NI

Secondary glazing is a fully independent window system, retrofitted on the room side of an external window, improving the thermal, acoustic and security performance of the property and is extensively used in heritage and commercial buildings as well as domestic homes.

Learn about our products

Product Choices

We specialise in providing innovative secondary glazing solutions tailored to meet your needs whether your after options to help reduce your business or home heating bills or simply want to block out unwanted external noise.

We offer both commerical & Residential solutions

Commercial & Residential

Commercial Aluminium

Aluminium Secondary Glazing

Aluminium secondary glazing is the perfect choice for commercial properties, offering exceptional durability and a sleek, professional aesthetic.
Its robust construction ensures it can withstand the demands of high-traffic environments while maintaining its modern, minimalist appeal.
With slim profiles that maximize natural light, it creates a bright and inviting space that leaves a lasting impression on clients and employees alike.

Residential Timber

Timber Secondary Glazing

Timber secondary glazing is a timeless addition to any residential property, blending practicality with natural elegance.
Perfect for traditional or period homes, its classic appeal enhances the character and warmth of your space while adding significant value.
As an environmentally friendly option, timber aligns with sustainable living practices, making it an excellent choice for eco-conscious homeowners.

What is Secondary Glazing?

Secondary Glazing is adding an additional internal window to an existing external window.

This system provides greater thermal insulation, reduces noise intrusion and improves security to your home, business or listed property, without damaging the aesthetics of the original external window.

01

Warmer

Installing Secondary Glazing adds an extra barrier to prevent heat loss.

02

Quieter

Secondary Glazing means it offers a three-pronged defensive against intrusive
external noise.

03

Safer

Secondary Glazing is extremely difficult to open from the outside and provides an additional physical barrier.

our team of experts are here for you

Give us a call today for a FREE quotation!

What our customers say

Client Reviews

“We Had windows done in the house and the results was fantastic! Less noise and no draughts now! Very Professional and friendly service at affordable rates from the fellas at Secondary Glazing NI. They Cleaned up after themselves and worked hard until the job was completed.'”

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“Fantastic service. We’ve noticed such a difference in our energy bills since we had secondary glazing fitted. High quality and professional workmanship. Give them a call you won’t be disappointed.”

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“A fast and friendly service with great advice helping me to understand what I needed. It has made such a positive impact and really helped to reduce the sound. Thank you I'm so pleased with the end result!'”

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“Very Professional and friendly service at affordable rates from the fellas at Secondary Glazing NI. They Cleaned up after themselves and worked hard until the job was completed.”

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