Basements can be fantastic for storage, giving you lots of extra space for tools, seasonal equipment and anything else that won’t quite fit in the shed. Some cellars even offer living space, once they’ve been waterproofed and converted.

But unfortunately, both types of basements can suffer from damp problems. The very nature of this space – being underground – means that water penetration is always possible.

Damp cellars need to be addressed, as left unchecked the problem can affect the rest of your property. It can rot floor joists and timbers, damage paintwork and plaster, and cause a buildup of mould and mildew that can be damaging for your health.  It may also mean that the cellar itself becomes unusable.

If your basement is too damp, read on for some fast, effective action you can take now.

1. Identify the Source of Moisture

The first step is to pinpoint what’s causing the problem. Common causes of basement dampness include:

• Poor drainage around the foundations
• Cracks in walls or floors
• High humidity or condensation
• Leaky pipes or appliances

Have a look around for water stains, mould growth and efflorescence (white powdery substance on walls), as well as musty smells. You may be able to use these signs to find the location of the problem.

2. Improve Exterior Drainage

Check your gutters and downspouts to ensure water is directed away from the foundations of your home. You may want to consider extending downspouts at least 1.5 to 2 metres from the house to prevent water pooling near the basement walls.

Another measure to improve drainage is to grade the soil around the building so that it slopes away from the property.

3. Seal Cracks and Gaps

If there are any visible cracks in walls or floors, you can repair them using waterproof sealants or hydraulic cement. If any cracks are particularly large or keep coming back, it’s recommended to call in a professional.

4. Install or Upgrade a Sump Pump

A sump pump helps to keep basements dry by directing water away during heavy rains. So if you do have a leak or a flood, you’ll be able to get the water out before it causes too much damage.

5. Use a Dehumidifier

One of the most effective methods to eradicate damp problems in your cellar is a powerful dehumidifier. This can help to keep humidity levels down, extract moisture from the air and prevent the buildup of mould.

6. Waterproof Basement Walls

Damp basements left unresolved can lead to major repair costs – waterproofing is a valuable preventative measure. Act now to have your walls waterproofed, and you could avoid problems later on.

Speak to a professional about waterproof membranes, basement tanking or cavity drainage systems, to see which would work best for your property.

7. Check for Plumbing Issues

Dampness in the cellar could be caused by something simple, like a leaky pipe. Inspect all pipes and appliances located down there, including washing machines, boilers and water heaters. If you find a leak, call in a plumber to get it sorted.

Another tip is to insulate cold pipes to prevent condensation, which can cause drips or even puddles of water.

8. Declutter and Allow Air Circulation

Is your cellar full to bursting? You may need to declutter, moving boxes, furniture and storage items away from walls to allow the air to circulate better.You should also avoid using cardboard boxes, as they absorb moisture and can breed mould.

9. Consider Ventilation Improvements

Adding vents, air bricks or even mechanical ventilation systems (like PIV units) can help the air to circulate better in your cellar, which can prevent damp and mould. If there are any windows in the basement, make sure they’re fitted with trickle vents.

10. Call in a Damp or Waterproofing Expert

For any major or recurring issue, you may be best calling in a professional damp or waterproofing expert. A qualified expert will be able to properly diagnose the issue and implement or recommend long-term solutions. You could save yourself both time and money by skipping straight to this step first.