Specialist Basement & Below Ground Waterproofing Assessments Across London, Kent and East Sussex
Below‑ground spaces are uniquely vulnerable to water ingress, dampness, and structural moisture pressure. Whether you’re planning a basement conversion, investigating leaks, or assessing an existing waterproofing system, a professional waterproofing survey provides the clarity and confidence you need to make informed decisions.
As a CSSW qualified waterproofing specialist, Damp Solve Surveying delivers design‑led, evidence‑based waterproofing assessments that comply with BS 8102:2022, the British Standard for protection of below‑ground structures.
Our surveys are trusted by homeowners, architects, contractors, and property professionals.
A waterproofing survey is a detailed assessment of a basement, cellar, or below‑ground structure to determine:
- Why water ingress is occurring
- How moisture is entering the structure
- Whether existing systems are compliant or defective
- What waterproofing method is most appropriate
- How to achieve long term, reliable protection
We assess the building fabric, ground conditions, drainage, structural design, and environmental factors to provide a clear, accurate diagnosis and a practical waterproofing strategy.
Waterproofing is only effective when the design, installation, and maintenance are correct which is why professional assessment is essential.
Waterproofing is a specialist discipline — incorrect advice can lead to expensive and disruptive failures. Our surveys provide clarity, accuracy, and long‑term confidence.
- Damp patches or staining on basement walls
- Water pooling on floors
- Musty or damp odours
- Peeling paint or blistering finishes
- Efflorescence (white salts) on walls
- Mould growth
- Rusting metal fixings or brackets
- High humidity in below ground rooms
- Sump pump alarms or failures
- Visible cracks in retaining walls
Even minor symptoms can indicate deeper issues with the waterproofing system.
Structural Elements
- Retaining walls and floor slabs
- Construction joints and movement cracks
- Penetrations, junctions, and detailing
- External ground levels and drainage
Existing Waterproofing Systems
- Type A (barrier protection)
- Type B (integral protection)
- Type C (drained protection)
- Membranes, coatings, and cavity drain systems
- Sump pumps and drainage channels
- Ventilation and moisture management
Moisture & Environmental Conditions
- Moisture readings and profiling
- Humidity and temperature levels
- Signs of hydrostatic pressure
- Salt contamination and water pathways
Diagnostic Tools Used
- Hygrometers
- Moisture meters
- Borescopes (where required)
- Thermal imaging (optional add on)
- Data logging (optional add on)
- Ventilation testing (optional add on)
- Summary of findings
- Assessment of existing waterproofing systems
- Moisture readings and analysis
- Photographs and evidence
- Recommendations for repair or redesign
- Guidance on BS 8102 compliance
- Optional add on results (thermal imaging, data logging, ventilation testing)
Reports are written in a clean, modern, easy‑to‑understand format suitable for architects, contractors, insurers, and homeowners.
