Preston Surveyor Case Study: Detached House in Preston with Slate Nail Sickness
Property Overview
This case study examines a detached house located in Preston, Lancashire. The property is a Victorian-era structure, characterised by its traditional slate roof, brick masonry, and period features that appeal to many potential homebuyers seeking character homes. However, during a recent RICS Level 2 survey, a critical issue was identified: slate nail sickness.
Understanding Slate Nail Sickness
Slate nail sickness is a common problem in older properties with slate roofs. It refers to the corrosion of the nails that secure the slate tiles to the roof battens. Over time, these nails can deteriorate due to exposure to moisture and varying weather conditions, leading to loose or slipping slates.
Symptoms and Diagnosis
During the comprehensive survey, several signs indicated the presence of slate nail sickness:
1. Loose and Slipping Slates: Numerous slates were found to be slipping or completely detached from their original positions. This is a classic symptom, often resulting from the nails losing their holding power.
2. Corroded Nails: Upon closer inspection, the nails were visibly corroded, confirming the diagnosis. The rusting of these nails weakens their structural integrity and compromises the overall stability of the roof.
3. Water Ingress: Evidence of water ingress was detected in the roof space, with damp patches and staining visible on the internal roof timbers. This is a secondary issue caused by the displaced slates allowing water to penetrate the roof.
Implications for the Homebuyer
The presence of slate nail sickness has several implications for a potential homebuyer:
1. Roof Integrity: The primary concern is the structural integrity of the roof. With slates becoming loose or falling off, the roof’s ability to protect the interior of the home from weather elements is severely compromised.
2. Water Damage: Prolonged water ingress can lead to significant damage to the roof timbers and internal structures, potentially causing rot and further deterioration if not addressed promptly.
3. Safety Risks: Loose slates pose a safety hazard, as they can fall and cause injury to residents or damage to property.
4. Maintenance Costs: Addressing slate nail sickness typically requires a comprehensive roof repair or replacement. This can be a significant expense, impacting the overall budget for the property purchase.
Preston Surveyor Recommended Actions
To mitigate the issues caused by slate nail sickness, the following actions are recommended:
1. Full Roof Inspection: Engage a professional roofing contractor to conduct a thorough inspection of the entire roof to assess the extent of the problem.
2. Roof Repair or Replacement: Depending on the severity, the roof may need partial repairs or a complete re-slating. It is advisable to replace the corroded nails with non-ferrous alternatives, such as copper or stainless steel nails, which are more resistant to corrosion.
3. Preventive Measures: Implement regular roof maintenance to ensure any future issues are detected early. This includes periodic inspections and prompt repair of any loose slates or minor damages.
Conclusion
While the presence of slate nail sickness in the Preston detached house is a notable concern, it is a manageable issue with the right approach and professional guidance. By addressing the problem promptly and effectively, the property can be restored to its original condition, ensuring the safety and comfort of its occupants. Prospective buyers should factor in the necessary repairs into their purchase decision and budget accordingly. Consulting with a qualified RICS surveyor and roofing specialist will provide further clarity and assist in making an informed decision.
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Disclaimer: The information contained in this blog is provided for general guidance only and does not constitute legal, financial, medical, or other professional advice. No warranty, express or implied, is given as to the accuracy or completeness of the information. Reliance on any information provided is at your own risk.
