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Secure and safe attic water tank support

Crucial considerations for property owners and professionals

Cold water tanks are essential components of many properties' plumbing systems, particularly in older buildings. However, their installation, maintenance, and location require careful consideration to ensure safety, prevent water contamination, and avoid potentially catastrophic incidents.

Proper Cold Water Tank installation

A correctly installed cold water tank should have:

  1. Adequate support from boarding laid over timber joists
  2. Joists installed perpendicularly to ceiling joists for optimal weight distribution
  3. Proper insulation to prevent contamination and maintain water quality
  4. A secure, well-fitted lid to protect the water supply

Case Study: Hazardous Cold Water Tank Installation

During a recent property survey, we encountered a alarming example of poor cold water tank installation and maintenance:

Key Observations:

  • Location: Loft space directly above a bedroom
  • Issues:
    • Inadequate insulation
    • Open tank exposing water to contaminants
    • High volume of sediment in the water
    • Tank shifted from its support due to stored items in the loft
  • Risks: Water contamination, structural damage, potential collapse

The Dangers of improper Cold Water Tank installation:

  1. Water Quality: Lack of insulation and proper covering can lead to contamination
  2. Structural Integrity: Incorrectly supported tanks may shift or collapse
  3. Property Damage: A collapsed tank can cause extensive water damage
  4. Personal Safety: In extreme cases, tank collapse could cause serious injury or fatality

Understanding the weight factor:

  • A small 20-gallon tank contains approximately 100kg of water
  • Larger houses require bigger tanks, significantly increasing the weight load
  • This substantial weight emphasises the critical need for proper support and positioning

Legal requirements and best practices:

  1. Adherence to Byelaw 30: This regulation focuses on protecting stored water from contamination. See WRAS for more information
  2. WRAS Guidelines: The Water Regulations Advisory Scheme provides comprehensive information on compliance
  3. Professional Installation: Always use qualified plumbers and builders for tank installation or modification
  4. Regular Inspections: Schedule routine checks to ensure ongoing compliance and safety

Proper Cold Water Tank location:

  • Avoid placing tanks above habitable rooms
  • Ideal locations include dedicated tank rooms or specially reinforced loft spaces
  • Consider modern alternatives like unvented hot water systems for new installations or renovations

Maintenance tips:

  1. Regular cleaning and disinfection of the tank
  2. Prompt repair or replacement of damaged insulation or covers
  3. Ensuring the loft space remains clear of items that could disturb the tank
  4. Annual professional inspections to check structural integrity and water quality

The safety implications of cold water tank installation and maintenance cannot be overstated. Property owners, builders, and plumbers must prioritise adherence to regulations and best practices to protect both the building and its occupants.

Concerned about your property's cold water tank? Don't risk your safety or water quality. Contact our expert surveyors today for a comprehensive inspection and professional advice on ensuring your system is safe, compliant, and efficient.


Written by David Coplin-Chard

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