Prevent damp in your home: practical tips you need to know

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Whether you’re a homeowner or renter with children, older people, or anyone vulnerable, knowing the main causes of damp in houses and the warning signs to look out for is vital.

Damp in your home can be a real worry — for both your property and your health.

This guide walks you through the simple steps you can take to help reduce damp and mould today, plus how to spot when it’s time to call a checked tradesperson for help.

What is damp, and what causes it?

Put simply, damp happens when unwanted moisture accumulates inside your home.

This could be from condensation, leaks, rising moisture from the ground, or poor ventilation.

And it’s not just older homes that can suffer with damp — even newer-build homes can experience issues with damp and mould.

Warning signs to watch out for

You’ll know something’s off if you notice any of these telltale signs of damp:

• Walls or ceilings that feel cold, damp, or have peeling paint/wallpaper

• Condensation on windows, small puddles on sills, or persistent damp smell

• Black mould or mildew patches forming on surfaces

• Musty odours in rooms, especially where ventilation is poor

• Wood or fabrics that feel damp, or even rot setting in

Want to start tackling it today and not sure where to start? Why not contact a relevant tradesperson working in your local area?

How to prevent damp and reduce condensation within your home

Some areas of the home are more prone to damp and mould than others — let’s take a look.

Bathrooms

First up, bathrooms — moisture-rich areas from hot baths and showers.

To help reduce damp in your bathroom and stop mould coming back, aim to:

• Open windows during and after bathing, and keep the door closed

• Use or install an extractor fan

• Wipe down tiles and surfaces after use to remove condensation

• Avoid drying large loads of washing in your bathroom

Bedrooms

Noticed condensation in your bedroom? Try the following tips to help ventilate your home properly:

• Open the windows for 10–15 minutes each morning

• Maintain a low steady temperature rather than letting it drop too cold

• Avoid pushing furniture flush against external walls

• Use dehumidifiers if needed

Ceilings, roof spaces & attic

If you’ve noticed damp around the ceilings, roof or loft space, it could be caused by leaks or inadequate insulation. To prevent damp and black mould developing:

• Dry clothes outdoors or in a ventilated space — avoid radiators for drying indoors

• Cover pots when cooking to reduce steam

• Keep rooms heated enough to avoid cold surfaces where condensation forms

• Check your roof space regularly for leaks or damp patches

How plants can help prevent mould in your home

While houseplants can’t single-handedly cure damp, they can help reduce moisture and improve air quality in your property — and they look great too!

From a practical standpoint, some plants are especially helpful:

• Boston fern (Nephrolepis exaltata) and peace lily (Spathiphyllum spp.) are often cited for moisture-absorbing capability in humid spaces

• English ivy (Hedera helix) has been seen to remove airborne mould spores in test settings

Plant placement & care tips

• Location: Place plants in rooms prone to condensation (bathroom, utility, laundry) but make sure they have indirect light and aren’t crowded

• Aspect: A plant on a shelf or table with space around it helps improve air movement

• Types of plant: Choose plant varieties suited to humidity: ferns and ivies thrive in damp spots; avoid succulents in humid zones (they prefer dry air)

• Care: Regularly wipe leaves and check for mould or rot on pots

• Soil: Keep soil moist but not waterlogged — poorly draining soil can contribute to mould growth itself

Is it safe to remove mould from my walls myself?

You should only attempt to remove mould from your walls yourself in certain situations.

NHS guidance says you should only remove mould yourself if:

• It’s caused by condensation, not leaks or rising damp

• The affected area is smaller than 1m x 1m (around 3ft x 3ft)

How to safely clean small patches of mould:

• Mix 1 part bleach to 4 parts water

• Use a damp cloth to gently wipe the mould away

• Dry the area thoroughly afterwards

• Dispose of or disinfect any cloths you used

If the mould keeps returning, covers a larger area, or you suspect a leak or structural cause, it’s safest to contact a checked damp specialist.

On Checkatrade, you'll only find trades who meet our high standards and pass up to 12 checks.

Checklist: How to prevent damp in your home

Mould exposure is especially risky for babies, older adults, and anyone with asthma or respiratory conditions. Follow these steps to help reduce damp in your home.

Improve ventilation:

• Open windows regularly

• Use extractor fans

• Leave trickle vents open

• Maintain low, steady heating — a warm surface is less likely to attract condensation

Reduce internal moisture:

• Cover pans when cooking

• Avoid drying clothes indoors if you can

• If drying laundry inside, ensure it’s in well ventilated spaces

• Wipe surfaces after showering or cooking

• Add humidity-absorbing houseplants in problem areas (bathroom, laundry)

Create thermal & ventilation balance:

• Avoid blocking radiators

• Position furniture a few centimetres from external walls

• Leave a 10mm gap beneath internal doors (or slightly open them to encourage airflow)

• Ensure insulation is installed properly

Regularly check for any signs of leaks, defective drainage, or signs of penetrating/rising damp, and get them fixed as soon as you spot them — waiting risks mould and structural damage.

When to call in a tradesperson

If you've taken the steps above and still see repeating signs of damp (persistent condensation, recurring mould, patchy damp spots, musty smell) then it’s time to contact a checked tradesperson.

Not sure which tradespeople can help tackle damp? Look for damp-proofing companies (for rising/penetrating damp), roofers (for roof leak issues or faulty flashing), plumbers (for pipe leaks), or insulation companies and heating/ventilation contractors (to ensure adequate airflow and thermal balance).

Find checked tradespeople to help tackle damp in your home

Damp can feel overwhelming, but early action makes a big difference.

With consistent ventilation, appropriate heating, routine checks, and smart use of plants, you can significantly reduce the risk of damp and mould in your home.

And if in doubt, don’t hesitate to search for a checked tradesperson working in your local area with Checkatrade:

• Checked - Every Checkatrade member must pass up to 12 checks and commit to upholding the Checkatrade Standard

• Reviewed - Over 6.2 million reviews have been published on Checkatrade

• Guaranteed - When you book through Checkatrade, your job is covered by our 12-month guarantee for up to £1,000 (T&Cs apply)

Request a quote, search in the Checkatrade app, or enter your postcode below to find checked tradespeople in your area.

FAQs

Is condensation the same as damp?

Condensation is not the same as damp.

• Condensation is moisture generated inside the home (from showering, cooking, drying clothes)

• Damp may include condensation but also covers water rising from the ground, penetrating via walls or leaks from roofs/pipes

My home is newly built and still has damp. Why?

New builds often retain moisture from construction (bricks, mortar, screeds). But persistent damp beyond a few months should be assessed by a tradesperson — it could be due to inadequate ventilation, or a defect.

Can I just use dehumidifiers to fix mould?

A dehumidifier helps reduce moisture, but if the root cause (poor ventilation, leaks, blocked drainage) is not addressed, unfortunately, damp will return. Use a dehumidifier as part of a wider approach to tackle the problem.

Are houseplants enough to stop damp?

Houseplants can contribute to reducing damp, but they cannot replace proper ventilation, heating, or leak repair. They make a useful supplementary measure when used correctly.

Who is responsible for damp if I rent?

If you rent, your landlord is generally responsible for structural damp, penetrating, or rising damp problems. For condensation issues, your landlord may have responsibilities if they relate to the home's structure or ventilation.

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