The roof is one of the most important structural components of a property, but it is frequently neglected until defects begin to show internally.
A professional roof survey identifies defects early, protects your investment and prevents small issues from developing into costly structural repairs.
At Simmons Taylor Hall, our RICS Chartered Building Surveyors carry out detailed roof surveys across Surrey and London for homeowners, landlords, developers and commercial property owners. Whether you are purchasing a property, managing a portfolio or planning refurbishment works, a clear understanding of roof condition is essential.
If you have concerns about your roof, contact our team before problems escalate.
Why a Professional Roof Survey Matters
Roofs are exposed to constant weathering, structural movement and ageing materials. Even minor defects can allow water ingress, which may lead to:
• Timber decay
• Insulation damage
• Mould growth
• Structural weakening
• Internal ceiling damage
A professional Roof Survey provides a structured inspection and a clear report on condition, risks and recommended next steps.
For property transactions, it supports informed decision-making. For ongoing asset management, it reduces long-term repair costs.
1. Damaged or Missing Roof Coverings
One of the most common issues identified during a roof survey is broken, slipped or missing tiles or slates.
This may be caused by:
• Storm damage
• Ageing fixings
• Poor installation
• Structural movement
Even a single displaced tile can allow water to penetrate beneath the covering.
How It Is Addressed
In many cases, localised repairs are sufficient. However, widespread deterioration may indicate the need for partial or full re-roofing.
A survey report will clarify whether immediate action is required or whether repairs can be planned as part of scheduled maintenance.
2. Deteriorated Flashings and Leadwork
Lead flashings around chimneys, valleys and abutments are critical to keeping water out.
Common issues include:
• Cracked or split lead
• Poorly sealed joints
• Inadequate installation
• Movement around chimney stacks
These defects often cause persistent leaks.
How It Is Addressed
Replacement or correctly detailed reinstallation is usually required. In some cases, chimney stack repairs or repointing may also be necessary.
Where structural cracking is observed, further investigation may be recommended through a wider Building Survey.
3. Blocked or Defective Rainwater Goods
Gutters and downpipes are frequently identified as contributing factors to roof related problems.
Blockages can cause:
• Water overflow
• Saturated masonry
• Damp penetration
• Timber decay at eaves level
How It Is Addressed
Routine maintenance and clearance often resolve the issue. However, long-term overflow can lead to fascia, soffit and structural damage that requires repair.
A roof survey will identify whether defects are maintenance related or part of a larger structural concern.
4. Flat Roof Membrane Failure
Flat roofs, particularly older felt systems, are prone to deterioration.
Common findings include:
• Blistering or ponding water
• Cracked or perished coverings
• Failed upstands
• Inadequate falls
Flat roof defects can be difficult to detect from ground level.
How It Is Addressed
Repairs may involve patching, overlay systems or full replacement depending on age and condition.
For commercial buildings and multi-occupancy properties, early intervention can prevent disruption and liability exposure.
5. Structural Movement in Roof Timbers
A roof survey may reveal movement or distress in structural elements such as rafters, purlins or trusses.
Causes can include:
• Historic overloading
• Timber decay
• Insect infestation
• Poor alterations
• Inadequate support
How It Is Addressed
Structural repairs should be carefully designed and supervised. In some cases, further investigation is required to assess load paths and overall roof stability.
At Simmons Taylor Hall, we provide coordinated advice, particularly where works intersect with Building Regulations Drawings or structural alterations.
6. Poor Ventilation and Condensation
Modern insulation upgrades without adequate ventilation can cause condensation within roof voids.
Over time this may lead to:
• Damp insulation
• Timber rot
• Mould growth
• Reduced energy efficiency
How It Is Addressed
Improving ventilation through ridge vents, tile vents or eaves ventilation is often required. Early identification prevents more serious decay.
7. Chimney Stack Deterioration
Chimneys are exposed to significant weathering.
Common defects include:
• Cracked brickwork
• Failed mortar joints
• Loose pots
• Damaged flaunching
These can pose safety risks as well as allowing water ingress.
How It Is Addressed
Repointing, rebuilding or partial dismantling may be recommended depending on severity.
Where neighbouring properties are affected, Party Wall considerations may arise. In such cases, advice under the Party Wall Survey process may be required.
When Should You Arrange a Roof Survey?
You should consider a professional roof survey if:
• You are purchasing a property
• You notice staining or damp internally
• You are planning refurbishment works
• Your property is over 20 years old
• You manage commercial or multi unit assets
• You are preparing for sale
Early inspection often reduces long-term expenditure.
Why Choose Simmons Taylor Hall for a Roof Survey?
• RICS-regulated Chartered Surveyors
• Over 35 years of professional experience
• Clear, structured reporting
• Practical commercial advice
• Local expertise across Surrey and London
We understand that a roof survey is not just about identifying defects. It is about protecting value, controlling risk and enabling informed decisions.
Frequently Asked Questions
What does a roof survey include?
It includes inspection of roof coverings, flashings, rainwater goods, structural timbers and visible defects, supported by a written report.
Is a roof survey different from a building survey?
Yes. A roof survey focuses specifically on roof elements. A Building Survey provides a broader assessment of the entire property.
How long does a roof survey take?
This depends on property size and complexity, but most inspections are completed within a few hours.
Do I need a roof survey for a flat roof?
Yes. Flat roofs are particularly prone to deterioration and benefit from specialist inspection.
How much damage can go unnoticed?
Significant deterioration can exist beneath coverings or within roof voids without obvious internal symptoms. Early inspection reduces risk.
Book a Roof Survey Before Minor Issues Become Major Costs
Roof defects rarely improve over time.
If you have concerns about your property, are purchasing a building or managing a commercial asset, arrange a professional roof survey with Simmons Taylor Hall.
Visit our Roof Survey service page to learn more or contact our team directly.
Contact Us
Email admin@simmonstaylorhall.co.uk
