If you notice puddles forming on your flat roof after April showers that don’t swiftly drain away, then you really need to get it checked out. Known as pooling or ponding, this can lead to serious problems in the long term – but RG Leverett has the solution. Here are some common questions people ask us about ponding on flat roofs, answered.

What Causes Ponding?

A flat roof is normally constructed with a slight incline that allows water to drain away to your guttering system. Subtle shifts in the ground that your house is settled on and exposure to the eroding effects of the Great British weather can mean that this incline disappears over time.

Before: This flat roof in Norwich has serious ponding problems.

What Are the Dangers of Ponding?

Hydrostatic pressure – the weight of the water ponding on the roof – can lead to structural problems as the water seeps its way into your roofing system. Damp wood will quickly rot and rotten timbers may not be able to support the weight of your roof. Stagnant water can also pose a health risk. Poisonous algae can grow in stagnant water and it can be a breeding ground for mosquitoes.

What’s the Solution to Ponding?

If you are experiencing persistent ponding – water hanging around for more than 48 hours after a rainstorm – then you should consider upgrading your flat roof. We can install a three layer high performance felt system at the proper incline that will ensure that water drains away before it does any damage. At RG Leverett, we also offer a 25 year guarantee on our work.

After: RG Leverett sorted out the ponding on this flat roof, and with a 25 year guarantee.

If you have a concern about ponding on your roof, or any other worries relating to your roofing system or roofline, have one of our experts check it out. For a free no obligation survey of your roof, call us on 01603 418818.