Penetrating Damp Diagnosis and Treatment Specialists

Book a Penetrating Damp survey with a CSTDB-qualified surveyor. Accurate diagnosis and specialist remedial works.

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Understanding Penetrating Damp in Properties

Penetrating damp occurs when moisture enters a building through the external fabric, often as a result of defects such as damaged pointing, cracked render, leaking gutters, defective roof coverings, failed seals or porous masonry. Unlike condensation, penetrating damp is typically linked to external moisture ingress and may become worse during or after periods of rainfall.

Signs of penetrating damp to look out for
  • Damp patches on walls or ceilings, often worsening after rain
  • Staining, blistering paint or damaged plaster
  • Localised dampness around windows, chimneys or external walls
  • Mould growth, musty smells or persistent cold surfaces
  • Defective pointing, cracked render, blocked gutters or visible external defects

ⓘ A professional survey can determine the true cause of the problem and the available solutions.

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Professional Penetrating Damp Survey

Our penetrating damp surveys assess the affected areas and surrounding building fabric to identify where moisture is entering the property. We inspect internal symptoms alongside external defects such as masonry, pointing, gutters, roof details, window surrounds and other vulnerable areas, helping establish the cause of the damp rather than simply treating the visible damage.

Our Process:
1
Internal & External Inspection
Walls, floors, ventilation and building defects assessed.
2
Moisture & Environmental Testing
Moisture readings and contributing factors identified.
3
Professional Report
You receive a clear report with our findings.
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Documented Report with Every Survey

Every survey carried out by Northway is supported by clear, written report detailing our findings, diagnosis and recommendations. Prepared by PCA - CSTDB-qualified surveyors, your report provides a professional record of the timber condition within your property and, where necessary, the appropriate treatment required.

Clear Identification of Issues
Accurate assessment of damp and timber conditions.
Report Suitable for Property Purchase
Professionally presented report with evidence and findings.
Remedial Work Recommendations
Where required, our reports will specify any necessary work.
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Specialist Penetrating Damp Treatment

Where penetrating damp is confirmed, Northway will recommend appropriate remedial works based on the source and extent of the issue. This may include repairs to external defects, improvements to drainage or rainwater goods, masonry repairs, localised plaster works or other preservation measures where required. Our aim is to stop moisture entering the building and protect the property from further deterioration.

PCA - CSTDB Qualified Technicians
20-Year Insurance-Backed Guarantee
Trusted by 100's of Homeowners
10+ Years Experience in Damp & Timber
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Areas We Cover

We provide pre-purchase damp and timber surveys across West Yorkshire and surrounding areas. Our understanding of local construction methods and materials allows us to deliver preservation solutions that are sympathetic, durable, and effective.

West Yorkshire
East Yorkshire
North Yorkshire
South Yorkshire
Lancashire
Manchester
Leeds
Bradford
Wakefield
Sheffield
York
Harrogate
Burnley
Huddersfield
Ilkley
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Why Choose Northway?

CSTDB-Qualified Surveyors

CSTDB-qualified surveyors with specialist knowledge in damp, timber and building preservation.

5-star Google Rating

5-Star Google Rating from homeowners and businesses in Yorkshire and surrounding areas.

Insurance-Backed Guarantees

All our works come with up to a 20-year guarantee for lasting peace of mind.

10+ Years Experience

Over a decade of specialist preservation works across residential, commercial and historic properties.

PCA-Aligned Methodology

Works are carried out in accordance with the Property Care Association's technical standards.

Historic & Listed Building Specialists

Experienced in working within the constraints of listed and historic structures.

Frequently Asked Questions (FAQ)

We're here to help you rectify issues in buildings, if you have any questions or would like some free advice. Contact us and we'll be happy to help.

Do you charge for surveys

Our surveys start from £180. All of our surveys include a full written report and recommendations tailored to your property.

Are your works guaranteed?

Absolutely. Depending on the service, we provide insurance-backed guarantees of up to 20 years for complete peace of mind.

What areas do you cover?

We’re based in West Yorkshire and cover Yorkshire, Lancashire and Greater Manchester.

Do you work on both residential and commercial properties?

Yes, we provide surveys and preservation works for homeowners, landlords, housing associations and commercial clients.

How do I know the problem will be diagnosed correctly?

All surveys are carried out by a CSTDB-qualified and experienced specialist. We identify the root cause before recommending works, ensuring the right solution every time.

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