Drainage Correction & Damp Prevention Project in Edinburgh
Professional correction of improper paving installation causing internal dampness. Complete drainage system installation with proper DPC clearance and BS 7533-compliant reconstruction.
Problem: Incorrect Slope Toward Property
Result: Internal Dampness (28.1% Moisture)
Solution: Professional Drainage System
After: Proper Installation with Correct Falls
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About the Project
The Problem Discovered
In 2025, Maybury Landscaping were called back by one of our previous clients in Edinburgh, where we had installed a patio for them in 2024. The customer had recently moved into a new property and noticed a persistent damp smell inside the house shortly after moving in.
After thorough investigation, our team discovered that the previous property owner had installed paving sloping toward the building instead of away from it. This critical error was causing rainwater to pool against the brickwork — above the Damp Proof Course (DPC) — and seep into the property through the walls.
Even worse, there was no drainage channel, no ACO system, and soil was placed directly against the wall. Soil continuously holds moisture, and this constant dampness against the building was causing serious internal damp problems that were missed during the property survey.
Project Type
Remedial drainage & patio reconstruction
Timeline
6 working days to completion
Location
Edinburgh, Scotland
Critical Issues Identified
- ✗Paving installed above DPC height (150mm regulation violated)
- ✗Slope directing water toward building instead of away from it
- ✗No drainage channel or ACO system installed at building line
- ✗Soil against wall holding continuous moisture
- ✗Internal damp smell and 28.1% moisture reading
- ✗Property surveyor failed to identify this critical issue
Our Professional Solution
Investigation and Excavation
We removed the existing paving to assess the foundation and immediately identified the lack of any sub-surface drainage. We excavated to 300mm depth to create space for a proper perimeter drainage channel. This allowed us to confirm the DPC height and mark safe drainage lines 150mm below the DPC as required by building regulations.
The challenge was working within existing levels (due to paths either side of the property) while creating proper drainage that would permanently eliminate the damp problem.
Drainage Solution Implementation
We installed a block retainer 200mm from the wall to prevent any moisture from tracking back toward the building. This created a dedicated drainage zone between the wall and the patio surface.
A trench 300mm deep was created for the perimeter drainage system, which we connected to the existing stormwater system. This trench was filled with no-fines gravel — a special aggregate that allows water to pass through rapidly without holding any moisture, unlike soil.
This double-layer protection ensures that ANY moisture is immediately drained away and directed below the DPC level, preventing any possibility of damp problems returning.
Patio Reconstruction
We rebuilt the patio with correct falls directing water AWAY from the property, using premium Tobermore Heather paving for a beautiful, durable finish. An ACO channel drain was installed at the building line to capture any surface water before it can reach the wall.
All surface water now directs away from the property with proper gradient, and the sub-surface drainage provides a second layer of protection. This is the only correct way to install paving against a building.
Why This Matters
- DPC Compliance: Paving MUST be 150mm below DPC OR proper drainage must take water below the DPC level
- No-Fines Gravel: Doesn't hold moisture = no damp risk (unlike soil which continuously retains moisture)
- Correct Falls: Water must flow away from building to prevent pooling and frost damage
- Winter Safety: Incorrect falls cause frozen, slippery surfaces creating safety hazards
The Transformation – Before and After
Before - Critical Issues:
- ✗Paving installed above DPC height
- ✗Slope directing water toward building
- ✗No drainage channel or ACO system
- ✗Soil against wall holding moisture
- ✗Internal damp (28.1% moisture reading)
- ✗Surveyor failed to identify issue
After - Professional Solution:
- Drainage channel 300mm deep below DPC
- Block retainer preventing moisture tracking
- No-fines gravel for rapid water drainage
- Correct surface falls away from property
- ACO channel drain at building line
- Damp problem completely eliminated
- Customer received survey warranty contribution
Customer Outcome
The homeowner was delighted with the result — the damp smell was completely gone, the patio looked brand new, and the property surveyor confirmed the issue was fully resolved. Because the original surveyor had missed this critical drainage issue during the property purchase survey, the customer was also reimbursed for a substantial part of the remedial work cost through their survey warranty.
Why Choose Maybury Landscaping for Drainage Work
We Refuse Bad Work
Maybury Landscaping will NEVER install paving that causes damp issues — even if customers request it. We prioritize building integrity over short-term profit.
BS 7533 Certified Standards
Every installation follows British Standards with proper drainage, DPC clearance, and foundations built 40% stronger than industry requirements.
Remedial Work Specialists
Experts in correcting drainage problems caused by improper installations. We provide detailed reports useful for survey warranty claims.
BS 7533
Certified Standards
2000+
Projects Completed
40%
Stronger Build
Lifetime
Guarantee
Frequently Asked Questions
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📍 Serving Edinburgh & Central Scotland for Drainage Solutions
Maybury Landscaping specializes in remedial drainage work across Edinburgh, Fife, Falkirk, Stirling, and surrounding Central Scotland areas. If you suspect drainage issues or dampness caused by improper paving installation, contact us for a professional investigation and permanent solution.
📍 Maybury Landscaping
Maybury Scotland Ltd
4 Redheughs Rigg
Edinburgh, EH12 9DQ
Service Areas: Edinburgh, Fife, Falkirk, Stirling, Livingston, Linlithgow, South Queensferry, Kirkliston, Bonnybridge, Balerno, Currie, Bo'ness, and all EH & FK postcodes.
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