Frequently Asked Questions

A glazing unit is the sealed glass component of your window that controls light, heat, and sound transmission.

• Typically consists of two or three glass panes separated by spacer bars creating insulating air gaps.
• Contains desiccant material to prevent condensation inside the panes.
• Sealed with compounds to maintain airtightness and trap insulating gases like argon.
• Proper glazing units improve energy efficiency, reduce condensation, and enhance comfort.
• Faulty glazing units can be replaced independently without changing the window frame.

Learn how choosing the right glazing unit benefits your home here.

We repair blown double glazed units in uPVC windows by replacing only the glazing unit while preserving the existing frame. Our process includes:

• Inspecting the window to confirm seal failure causing condensation or fogging
• Removing the faulty double glazing unit carefully from the uPVC frame
• Installing a new sealed double or triple glazed unit with premium seals and insulating gas
• Testing for airtightness and proper fit to restore thermal performance

This targeted repair is cost-effective, reduces waste, and restores your window’s energy efficiency without full replacement.

Professional window seal replacement typically costs between £150 and £500 per window, depending on size and location.

• Costs vary based on window dimensions and accessibility.
• Full replacement ensures proper installation and warranty protection.
• DIY repairs are possible for minor issues but not recommended for full seal failure.
• For more information, visit our Why Replace Window Seals - Energy, Comfort, Cost page.

Modern glazing bars have minimal impact on the energy efficiency of your windows.

• Made from low-conductivity materials like uPVC or aluminium to reduce heat transfer.
• Designed to replicate period styles without sacrificing insulation.
• Through-bars sit inside sealed units, preventing dirt accumulation and maintaining airtightness.
• Properly installed glazing bars preserve thermal performance while enhancing window aesthetics.

Explore how glazing bars balance style and efficiency in your home here.

We specialise in replacing failed double glazing units in conservatory windows without removing the entire frame. Our process includes:

• Inspecting the glazing unit for seal failure signs like condensation or fogging
• Carefully removing the faulty glazing unit while preserving the existing frame
• Installing a new, energy-efficient double or triple glazed unit with proper seals
• Ensuring airtightness and thermal performance to prevent future failures

This method saves you money and reduces disruption compared to full window replacement. For conservatories, we also recommend improving ventilation to prevent condensation issues.

We provide expert patio door glass replacement services using high-quality glazing units tailored to your door's frame and style. Our service features:

• Precise measurement and assessment of your patio door glass
• Replacement of damaged or blown double glazing units without removing the entire door frame
• Use of durable, energy-efficient glass options including double or triple glazing
• Professional installation ensuring airtight seals and compliance with UK building regulations

Our approach minimises disruption and maximises energy efficiency, helping you maintain comfort and security. Contact us for a quote and expert advice on patio door glass replacement.

We provide expert patio door glass replacement services that restore your door’s safety, insulation, and appearance. Our service features:

• Careful removal of damaged or cracked glass panes
• Installation of high-quality double or triple glazing units tailored to your patio door
• Use of proper sealing and insulation materials to prevent drafts and moisture
• Minimal disruption with quick, clean installation
• Compliance with UK building regulations for safety and energy efficiency
• Competitive pricing and professional workmanship For more on repairing cracked windows and upgrading glass, see our article Don't Ignore a Cracked Window - Repair and Upgrade.

We offer comprehensive window hinge and alignment repair services to ensure your windows operate smoothly and securely. Our expert team:

• Diagnoses issues with hinges, handles, and window alignment
• Repairs or replaces worn or damaged hardware
• Adjusts window frames for proper fit and airtight sealing
• Lubricates moving parts to prevent wear and improve function

Regular maintenance and timely repairs prevent drafts, improve energy efficiency, and extend window lifespan. Schedule an inspection to keep your windows in optimal condition.