How to Waterproof a Basement: A Complete Guide

Over 6 million UK homeowners are living in flood-prone areas. Many are at risk of extensive personal damage, and even homelessness, if anticipatory measures aren’t put in place. Basement waterproofing systems, in particular, have become a hot topic over the last few years.

As flood-prone areas are situated below ground level, the soil becomes saturated after heavy rain. If the water has nowhere to go, it congregates around the exterior walls and forces itself through structural gaps.

Waterproofing your basement is critical if:

  • You’re located on a floodplain
  • Your property is below the water table
  • Your property slopes downwards

How can I waterproof my basement?

Start exterior waterproofing

By excavating the soil around your basement and applying a waterproof membrane, you create a strong barrier that keeps water at bay. Adding draining boards can further direct water toward outlets, preventing it from building up and putting pressure on the walls.

Seal structural cracks

Hydrostatic pressure causes water to seep through cracks in masonry. Typically, this occurs when the property is on a slope, as the water naturally congregates around the base. Keep an eye out for peeling paint or powdery deposits on the inside of your walls – these are telltale signs that moisture is present.

In this case, seal any visible cracks using hydraulic cement. Plus, applying an impermeable coating to the interior walls can also prove successful in holding back excess water.

Please note that sealants are only effective for minor water seepage rather than floods.

Install a sump pump

If your property is prone to flooding, implementing a basement waterproofing pump system is a smart choice. The system is lowered into the sump pit, where water naturally accumulates. The excess water collected is then directed through an attached pipe and dispersed.

Some of the most popular pumps on the market include:

  • Submersible pumps
  • Pedestal pumps
  • Combination pumps

It’s also a wise idea to invest in a battery backup sump pump in the event of an emergency. These systems are becoming gradually more vital in the UK, where storms can cause power outages and prevent your original sump pump from switching on.

Sump pumps can also be used in conjunction with cavity drainage systems. The two systems work together to relay and remove water more efficiently. A cavity drainage system runs along the edges of the basement floor and amasses rainwater around the perimeter. Again, the fluid is then directed into the sump pit and channelled away via pipework.

Also, look out for pumps with alarm systems that will alert you when high levels of water are sensed.

Act now: Protect your basement from water damage

While there are several methods of basement protection, sump pumps are a standout choice. Here at Sumps & Pumps, we’re proud to be the UK’s leading sump pump providers.

So, what is the best basement waterproofing system, you may be asking? As we stock a variety of pump types, we’ll advise on which pump best suits your needs.

Don’t wait until you get flooded out – buy from Sumps & Pumps today.

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