How long until my sealed unit ships?

Standard double-glazed units take 5–7 working days to make and dispatch. Triple-glazed, toughened and laminated units take 10–14 working days. We email you your delivery day the day before.

What warranty do you offer?

Every sealed unit carries a 10-year guarantee against seal failure (condensation between panes) and structural defects. Our fitting work and coatings (Low-E, self-cleaning, solar) are also guaranteed for 10 years. The guarantee covers the original buyer only and doesn't transfer to a new owner.

Are you FENSA registered?

Yes. Pane Relief is FENSA registered for installation work, installer number 43465. FENSA registration confirms our installations comply with Building Regulations Document L (energy efficiency).

What dimensions do I provide?

Measure the visible glass (not the frame), then add 25mm to the width and 25mm to the height, in millimetres.

Do you deliver UK-wide?

Yes, anywhere on mainland UK. Delivery is free to Bristol (BS) postcodes. Everywhere else on the UK mainland it costs £150 + VAT (£180), with no free-delivery threshold. The largest unit we deliver is 2900mm × 1500mm, with a £15 surcharge on any unit over 2000mm.

What postcodes do you cover for installation?

Bristol, Bath, North Somerset and South Gloucestershire, plus Gloucester and towns in Wiltshire and Somerset. Elsewhere on the UK mainland we supply units for you or your installer to fit.

Can I return a sealed unit if I measured wrong?

Made-to-measure sealed units can't be returned unless faulty or damaged. If you measured wrongly, we remake the unit and you pay the same price again. You can change or cancel free of charge until production starts. Please report any damage within 24 hours of delivery.

What's the difference between a sealed unit and replacement glass?

A sealed unit is a complete double-glazed assembly: two panes of glass bonded around a spacer bar with desiccant, with air or (as an upgrade) argon gas between the panes. Replacement glass is a single pane. If your unit is misted, you need a new sealed unit, not just glass.

Are your units BS EN 1279 compliant?

Yes. Every Pane Relief sealed unit is made by our partner factory to BS EN 1279, the European durability standard for insulated glass units. This covers gas concentration retention, edge seal integrity, and moisture penetration.

Yes. Apply for a trade account at panerelief.co.uk/pages/bulk-orders. Trade discounts are 5% at 5+ units, 10% at 20+ and 15% at 50+. We don't offer 30-day credit terms.

How do I measure a sealed unit?

Measure the visible glass face, width and height, in millimetres, then add 25mm to the width and 25mm to the height. That is your order size. Our measuring guide: panerelief.co.uk/pages/measuring-guide

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Trade customers get volume discounts: 5% at 5+ units, 10% at 20+ and 15% at 50+. We don't offer 30-day credit terms. Contact us with your trade details to get started.