







If your windows are draughty, damaged or no longer closing properly, a window replacement in Cork could significantly improve your home’s comfort, insulation and energy performance. As a trusted local window replacement company, we handle everything from single window upgrades to full house replacements across Cork City and County.
Common reasons homeowners replace their windows:

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Energy Glazing has built long-standing relationships with homeowners across Cork who value dependable installation and energy-conscious solutions.
Every window replacement in Cork is supplied directly and installed by our own in-house team – no subcontractors.

Timber inside, aluminium outside – a durable low-maintenance option for modern homes.

A popular and practical window style with strong insulation and easy everyday use.

Upgrade old or damaged windows with modern, energy-efficient systems.

Traditional-style windows with improved insulation and performance.

Flexible opening windows for ventilation, safety and easy cleaning.

A-rated glazing solutions designed to reduce heat loss and improve comfort.
Claim cash back on energy-efficient windows.
The 2026 SEAI Window & Door Grant can significantly reduce the cost of upgrading to A-rated windows (examples: up to ~€4,000 for windows). Grant approval is required before work starts.
We’ll check your eligibility, recommend the correct glazing for BER improvements and help with the paperwork so your installation meets SEAI rules.

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Choosing the right installer matters. Energy Glazing has delivered reliable replacement projects across Cork for over 30 years.

Cork HQ

Energy Glazing is based in Cork city and all county and provides window and door installation
services for homeowners across the region.
If you are planning to upgrade your windows, install new doors or improve your home’s energy
efficiency, our team can arrange a visit and provide a detailed quotation.

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Arrange a no-obligation survey and receive a clear written quotation for your window replacement
project.
We’ll contact you within 24 hours to confirm a convenient survey time.