Water is the new fire, and it is crucial for contractors to prioritise water leak detection and prevention. Incorporating water leak detection equipment into every contractor’s common materials strategy is essential in mitigating the risks of water damage during construction. With full bore water leaks becoming increasingly common, it is imperative to take proactive measures to prevent escape of water and water damage, as it has become a major cause of loss in the construction industry.

By installing a reliable Waterguard system, contractors can significantly reduce Builder’s Risk claims, avoid unnecessary costs, and prevent project delays. Additionally, underwriters are now emphasising the importance of implementing higher standards of loss prevention for water damage, such as following CIREG best practice guidance and implementing a comprehensive water management plan.

What are the most common causes of water damage on construction sites?

Construction sites are susceptible to various potential causes of water damage, which can lead to significant costs, delays, and safety hazards. Identifying and addressing these issues promptly is crucial for the successful completion of construction projects. In this blog post, we will discuss some of the most common causes of water damage on construction sites.

3 Common Causes

Heavy rain and flooding

Construction sites are vulnerable to heavy rainfall, especially during the rainy seasons. When proper drainage systems are not in place or are overwhelmed by excessive rainfall, water can accumulate and cause flooding. This can lead to structural damage, erosion, equipment damage, and delays in construction work.

Plumbing leaks and burst pipes

Faulty plumbing systems are a frequent cause of water damage on construction sites. Leaking pipes or burst pipes can result from poor installation, wear and tear, or accidental damage. These issues can lead to water seepage, dampness, and potential damage to the building's structure, electrical systems, and materials.

Improper waterproofing

Inadequate or faulty waterproofing is a common cause of water damage in construction. If proper waterproofing measures are not taken during the construction phase, water can penetrate through walls, roofs, or basements. This can result in mold growth, structural damage, and damage to finishes such as paint, flooring, and insulation.

Are there any specific guidelines or recommendations for preventing water damage on construction sites?

Water damage is a common and costly issue on construction sites. From damaged materials to delays in project timelines, the impact can be significant. To prevent water damage on construction sites, there are specific guidelines and recommendations outlined in the CIREG Best Practice Guidance written by the CAR insurance group. this includes compliance requirements and recommendation plus instructions on how to complete a site specific water management plan. Take a look at our CIREG Procurement Guide for systems which cover temporary and mains water supplies.

Out of hours water damage

Two in three large loss claims occur out of hours, with this alarming number of insurance claims filed by construction sites out-of-hours, one might assume that finding a foolproof solution is impossible. However, Waterguard’s innovative SiteGuard system provides a viable solution by effectively managing the temporary water supply during operational hours, eliminating the risk of expensive damage. This practiced system offers more than just an alternative – it offers a reliable and efficient solution, preventing water losses from construction defects for temporary supply contractors across the country.

Preventing out of hours water damage on construction sites using water isolation

The Waterguard SiteGuard was originally developed in 2017 for the Battersea Power Station Development to protect numerous water sources. As it was such a large and complex development, insurers were insistent that the contractors implemented preventive water damage measures. Designed specifically with Contractors All Risk in mind, this system is a cost-effective way of eliminating the risk of water damage out of operational hours on any construction site.

Automatic water shut off
Automatic water shut off

The Waterguard SiteGuard will automatically shut off the sites temporary water supply when the site is closed, automatically reinstating it when the site reopens. This system is easily programmable to the sites individual working hours for every day with a daily timer for precise programming of working hours.


  • CIREG Best Practice compliant for temporary water supplies.
  • Connect to 2 valves with independent channels.
  • Allocate channel names based on location.
  • Each separate channel controlled by 2 time periods for alternative days allowing for flexibility and added protection during short site closures.
  • Available for pipe sizes up to 150mm.
  • Manual bypass to reinstate the water without touching the controls.
  • Weatherproof enclose for the control panel.
  • Available with 12VDC or 230V AC mains power.

The Waterguard SiteGuard is primarily designed for the temporary water supply on construction sites to provide out of hours automatic shut off but can also be used in any building needing to isolate the water supply at pre-set times determined by the user.

If you’re currently using temporary supply before permanent works are installed, and you’d like to mitigate the risk of water damage to your site or building, please get in touch or request a quote here, the only information we need is the pipe size of the temp supply.