Flat roof surveys and leak tracing in Sunbury-on-Thames

When is a flat roof survey worth it in Sunbury-on-Thames?

In Sunbury-on-Thames, as elsewhere, people often book a survey after a repair that didn't hold. When a leak returns, it usually means the first fix treated the symptom rather than the cause. Tracing the actual entry point saves paying for the same repair twice.

In a town like Sunbury-on-Thames, flat roofs are commonly found on 1930s semis with flat-roofed garages and kitchen extensions or bungalows with flat-roofed side extensions and dormers. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain.

How much does a flat roof survey cost in Sunbury-on-Thames?

At South East guide rates, a condition survey and leak investigation comes to £170–£330 including VAT. We confirm the price once we've traced the leak or seen the damage.

What does a flat roof survey report cover?

The report sets out what the roof is, what condition it is in and what we recommend, in plain language.

• The roof system, approximate area and how the roof is built, as far as can be seen.
• The condition of the covering: splits, blisters, crazing, lost chippings, open laps and wear.
• Upstands, flashings, edge trims and rooflights.
• Falls, ponding and the state of outlets and gutters.
• Moisture readings and the findings of any core samples.
• The likely cause of any leak, and how confident we are in it.
• Recommended action, ranked by urgency, with guide costs.

We are clear about what we could and couldn't see. A survey can't inspect hidden timbers without opening them up, and we will say where a finding is an inference rather than a direct observation.

What's included?

• Checks on walls, copings and trays above the roof
• Plain written report with ranked recommendations
• Core samples where readings need confirming
• Moisture meter readings across the roof

Building regulations in England

Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.

Which nearby areas do we also cover?

• West Molesey · 2 mi
• Ashford, Surrey · 3 mi
• Weybridge · 3 mi
• Esher · 3 mi
• Chertsey · 4 mi
• Staines-upon-Thames · 4 mi

Other flat roof work in Sunbury-on-Thames

• Commercial flat roofing
• EPDM rubber roofing
• Balconies and roof terraces
• GRP fibreglass roofing
• Flat roof replacement
• Garage roofs
• All services in Sunbury-on-Thames