Yes, while single glazing isn’t illegal, you may claim faulty double glazing compensation (and, in some cases, for single-glazed windows) if poor or broken windows amount to housing disrepair and cause loss, risk, or ill-health. Landlords must keep windows and the exterior in repair; if they fail after notice, you can seek repairs and compensation.
What counts as a valid claim?
Single glazing: not illegal, but still claimable in the right circumstances
Single glazing on its own isn’t against the law. However, excess cold, damp, and mould are hazards. If old windows make the home cold or damp, or won’t close or lock, that can trigger duties under the Housing Health and Safety Rating System (HHSRS). If your landlord ignores reports, you may pursue compensation.
Double glazing that’s faulty
If double glazing has failed seals, constant condensation between panes, rotten frames, drafts, or broken locks, that is usually disrepair. Landlords must repair the structure and exterior, which includes windows and frames. If they don’t act within a reasonable time after notice, faulty double glazing compensation can be sought for the impact on you.
The legal footing
- Landlord repair duty: Landlords are always responsible for repairs to the property’s structure and exterior, including windows and doors.
- Health hazards: The HHSRS lets councils—and courts—assess hazards like excess cold and damp/mould from defective windows.
- Energy efficiency rules (PRS): In privately rented homes, there is a minimum EPC band E standard (with specific exemptions). Drafty or failing windows can make meeting that standard harder, strengthening your case.
- Awaab’s Law (social housing): From October 2025, social landlords must investigate and fix dangerous damp and mould within set deadlines, with emergency hazards fixed within 24 hours. This raises compliance expectations and helps tenants evidence unreasonable delay.
Bottom line: if windows are unsafe, unsecure, or make the home cold or damp—and the landlord drags their feet—you can pursue faulty double glazing compensation (and, where relevant, for single glazing too).
What you can claim for
You could claim one or more of the following, depending on the evidence:
- Repairs or replacement: Getting the windows fixed or replaced to proper standard.
- Rent reduction (abatement): A percentage of rent for each month your home was part-unusable or substandard because of the windows.
- Extra heating and electricity costs: Where you can show higher bills caused by drafts or failed glazing.
- Damage to belongings: Curtains, carpets, or furniture spoiled by damp or leaks.
- Inconvenience and loss of amenity: Living with persistent drafts, noise ingress, or security worries.
- Health impact: If damp or cold has worsened breathing or aggravated asthma, personal injury damages may be valued with reference to the Judicial College Guidelines (JCG, 17th ed., Apr 2024).
How much faulty double glazing compensation could you receive?
Every case turns on its facts, but this simplified table shows how housing disrepair linked to windows is often assessed:
| Head of loss | How it’s worked out | Typical proof | Example |
|---|---|---|---|
| Rent reduction | % of monthly rent for each affected month (severity and room usage matter) | Tenancy, rent statements, photos, inspection notes | If rent is £900 and a 30% reduction applies for 4 months, £1,080 (£900 × 30% × 4) |
| Higher energy bills | Difference in bills vs prior periods or similar homes | Bills, meter data, expert report | Extra £45/month x 5 winter months = £225 |
| Damaged items | Repair or replacement cost minus wear & tear | Receipts, photos | Mould-damaged curtains £120 |
| Inconvenience | Modest lump sum reflecting day-to-day disruption | Diary notes, photos, surveyor comments | Case-by-case |
| Health impact | Assessed using JCG brackets for relevant symptoms | GP/consultant evidence, medical report | Valued by JCG 17th ed.; 2024 figures apply |
Note: Courts and negotiators use the JCG as a starting point for personal injury valuations. The 17th edition (April 2024) updated figures across categories. Your medical evidence determines which bracket applies.
Do you have a claim for faulty double glazing compensation?
You likely do if:
- Windows won’t close, lock, or seal, or panes show constant internal condensation.
- Frames are rotten, leaking, or dangerously loose.
- Drafts or failed glazing make rooms excessively cold or damp.
- You reported it and your landlord did not fix it within a reasonable time.
Evidence that wins cases (use this checklist)
- Photos and videos of the defects and the condensation between panes.
- Temperature or humidity logs (a cheap hygrometer helps).
- Repair reports or emails/texts proving you notified the landlord.
- Bills showing higher winter heating costs.
- Medical notes if symptoms (e.g., coughs or aggravated asthma) are involved.
- Independent inspection (surveyor or council HHSRS inspection) where possible.
Step-by-step: how National Claims progresses your case
- Free triage call: We listen, review your photos, and assess the faulty double glazing compensation angle alongside any damp/cold hazards.
- Notice & evidence pack: We help you serve proper notice and compile an evidence file that aligns with HHSRS factors.
- Expert assessment: Where needed, we arrange an independent surveyor and obtain a medical report for any health impact (so JCG brackets can be applied).
- Negotiation: We press for repairs/replacement and the right compensation mix (rent reduction, expenses, injury).
- Escalation: If the landlord stonewalls, we can escalate via the court route appropriate to your tenancy, relying on the landlord’s repair duty and evidence of hazard.
Frequently Asked Questions
1. Is single glazing illegal in rented homes?
No. But if single glazing exposes you to excess cold or mould, that’s a hazard the landlord must address. If they don’t, you may claim.
2. What about energy efficiency rules?
In the private rented sector, landlords must meet at least EPC band E, subject to exemptions. Poor windows can push EPC down, which adds pressure on landlords to act.
3. Has the law changed after Awaab Ishak’s case?
Yes. Awaab’s Law sets deadlines for fixing serious hazards in social housing from October 2025, with emergency hazards addressed within 24 hours. It strengthens tenants’ position where damp and mould are linked to bad windows and ventilation.
4. How long do I have to claim?
In general, you should act quickly. For personal injury elements, limitation can be three years from the date of injury or knowledge. Disrepair rent claims follow different rules—speak to us early so we can preserve evidence and maximise your outcome.
Why choose National Claims?
- We build strong, evidence-led cases aligned with HHSRS and JCG.
- We focus on fast repairs, fair rent refunds, and maximum awards for faulty double glazing compensation.
Customers pay up to 25% (incl. VAT) of the amount recovered towards solicitor costs and if you cancel outside your cooling off period, you may be charged a fee.
Final call to action:
Don’t wait while your claim window closes. Speak with National Claims today We’ll connect you with experienced solicitors who understand your case and fight for the maximum compensation you deserve.
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