10 Common Defects Found in East Sussex Properties

After more than 1,200 surveys across Crowborough, East Sussex and Kent, our team has seen virtually every type of property defect imaginable. While every building is unique, certain issues come up time and again — particularly in the older housing stock that characterises so much of East Sussex.

Here are the 10 most common defects our surveyors find, what causes them, and what you should do if they're identified in your survey.

1. Roof Tile Defects and Slippage

Roof coverings deteriorate over time. In East Sussex, where we get significant rainfall and periodic frost, tile and slate coverings are vulnerable to movement, cracking and slippage. Even a small number of missing or slipped tiles can allow water ingress that damages the roof structure below. We check all roof coverings using binoculars and, where possible, from a ladder or drone.

Typical repair cost: £300–£1,500 for localised repairs; £8,000–£25,000+ for a full re-roof.

2. Damp Penetration from Failed Gutters and Downpipes

Blocked, leaking or poorly maintained gutters and downpipes are the single most common cause of damp in East Sussex properties. When gutters overflow against external walls, water can penetrate the masonry and appear as damp internally. This is frequently misdiagnosed as rising damp — and sometimes treated with expensive injected DPCs that don't address the actual problem.

Typical repair cost: £200–£800 for gutter repair or replacement; internal plaster repair additional.

3. Rising Damp

Genuine rising damp — where groundwater travels upward through masonry — is more common in properties built before 1920, when DPCs weren't mandatory. Victorian and Edwardian properties in Crowborough frequently have original brick-on-slate DPCs that have deteriorated over time.

Typical repair cost: £500–£3,000 for DPC repair or injection, plus replastering costs.

4. Chimney and Flue Defects

Many East Sussex homes have chimney stacks that are no longer in active use. These are particularly vulnerable to deterioration — frost-damaged brickwork, failed flashings, eroded mortar and collapsed flue liners are all common findings. A falling chimney stack is a serious structural hazard that can also cause significant damage to the roof below.

Typical repair cost: £500–£5,000 depending on severity.

5. Structural Movement and Cracking

Some degree of movement is normal in older buildings. The question is whether any cracking is current or historical, progressive or stable, and what's causing it. Common causes in East Sussex include differential settlement in clay soils, tree root influence, lintel failure, overloaded structures and thermal movement. Not all cracking is serious — but some indicates significant structural problems.

Typical repair cost: £500–£30,000+ depending on the cause and extent of movement.

6. Defective Pointing and Failed Render

Failed or missing mortar joints in brickwork (pointing) allow water penetration into the wall structure. Similarly, cracked or delaminated render on rendered properties is a common source of water ingress. Both are gradual processes that worsen over time if not addressed.

Typical repair cost: £500–£4,000 for repointing or rerendering, depending on extent.

7. Timber Defects: Wet Rot, Dry Rot and Woodworm

Timber is used extensively in older buildings — in floor joists, roof structures, window frames and stairways. Where moisture has been present, wet rot and sometimes dry rot can develop. Woodworm (wood-boring beetle larvae) is also common in older East Sussex properties. We inspect all accessible timber with an eye and probe, using a damp meter where appropriate.

Typical repair cost: £200–£15,000+ depending on extent and location of timber decay.

8. Substandard Electrical Installations

Many older properties still have original electrical installations — old fuse boxes, rubber-sheathed cables, or non-earthed wiring — that are unsafe by modern standards. We flag these in our surveys and recommend a full NICEIC electrical inspection.

Typical cost: £3,000–£8,000 for a full rewire.

9. Inadequate Drainage and Waterproofing

Surface water drainage problems — blocked drains, inadequate falls on paths and patios, or defective soakaways — are common in East Sussex's older properties. These can lead to water pooling against the building, increasing the risk of damp penetration and structural issues over time.

Typical repair cost: £500–£5,000 depending on the extent of drainage works.

10. Flat Roof Defects

Many East Sussex properties have flat-roofed extensions added in the 1960s–1980s using built-up felt. These flat roofs have a limited lifespan — typically 15–25 years — and by now, many are well past their best. Blistering, ponding, cracking and delamination are all common findings, and water ingress from failing flat roofs can cause significant internal damage.

Typical repair cost: £1,500–£6,000 for flat roof replacement.