Can You Claim Blocked Drains on House Insurance?
The short answer is: Yes, sometimes. However, the most important factor isn’t the damage itself – it’s the specific wording of your insurance policy. Every provider is different, and what one company covers, another may explicitly exclude.
Whether a claim is successful depends entirely on:
- The cause of the blockage,
- The specific terms and conditions of your policy,
- How the technical report is written.
Understanding what your policy does and doesn’t cover is therefore the critical first step and it starts with knowing what insurers typically agree to pay for.
What Insurance Usually Covers
Insurance generally covers accidental damage, not wear and tear.
For example:
Heavy Root Damage
If thick structural roots have lifted, cracked, or collapsed a pipe, this is often categorised as “accidental damage.”
Note: Some policies now explicitly exclude root damage, viewing it as a maintenance issue rather than an accident. You must check your policy document to see if roots are listed under your exclusions.
Vehicle Damage
If a heavy lorry, HGV, tractor, or plant vehicle crushes a drain, insurers may:
- Pay the claim,
OR
- Advise you to claim against the vehicle’s insurer.
Documentation is key.
Flooding in the Garden
If your garden floods due to:
- A collapsed pipe,
- Surface water system failure,
- External contributing factors.
It may be claimable.
But again, it depends on:
- Policy wording,
- Evidence,
- Cause.
The key takeaway is that garden flooding claims are rarely straightforward. Even where a valid cause exists, insurers will scrutinise the evidence closely before agreeing to pay out. That’s why understanding the boundaries of your policy matters just as much as the damage itself and why knowing what’s commonly excluded could save you a costly surprise.
Critical Exclusions to Look For
Even if you have “accidental damage” cover, insurers often list specific materials or scenarios that they will not pay out for. Common exclusions include:
- Pitch Fibre Pipes: Many modern policies exclude claims for pitch fibre drains (common in 1960s/70s builds) because they are prone to natural deformation over time.
- Specific Root Exclusions: As mentioned above, some insurers view root ingress as “preventable” through maintenance.
- Mechanical Failure: Damage to internal moving parts, such as pumps or treatment plant components, is often excluded unless you have a specific “home emergency” add-on.
When Insurance Won’t Pay
Most policies will not cover:
- General wear and tear,
- Gradual deterioration,
- Poor installation,
- Neglect.
That’s why CCTV drain surveys are important.
The Best Time to Check?
The best time to check your insurance policy documents for blocked drain inclusion is right now!
Don’t wait for a backup to happen before reading the small print.
If you have large trees on your property or older clay drains, review your policy wording immediately. It’s far better to understand your level of cover before you need it.
And if you’re unsure of your system’s condition, ASL can conduct a thorough CCTV survey. Having a CCTV drain survey provides the factual evidence you need to see if your system meets your insurer’s requirements or if you are at risk of an excluded claim.
Call ASL on 0800 181 684 for expert advice on your drainage requirements.
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