FAQs

Replacing damaged window seals is crucial to maintain your windows' insulation, prevent drafts, and avoid condensation between panes, which keeps your home comfortable and energy efficient.

• Window seals trap insulating gas like argon between panes and maintain airtightness.
• Damaged seals let moisture in, causing foggy windows and heat loss.
• Failed seals increase heating costs as your system works harder.
• Seal lifespan ranges from 10 to 20 years, affected by climate and maintenance.
• Professional replacement costs typically range from £150 to £500 per window.

For detailed signs and replacement advice, visit our Why Replace Window Seals page.

We use high-quality sealants like butyl or polysulphide compounds to create airtight seals that maintain insulation and prevent moisture ingress.

• Seals trap insulating gases such as argon between glass panes.
• They prevent drafts, heat loss, and condensation inside double glazing.
• Proper seals sustain the thermal performance and longevity of your windows.
• Damaged seals lead to foggy glass and higher energy bills.
• Learn more about the role of seals on our Why Replace Window Seals - Energy, Comfort, Cost page.