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Condensation Control And Mould Treatments

We offer effective solutions to eliminate condensation, stop black mould, and protect your home and health.

Serving Sunderland, Durham, and the wider Wearside area with expert advice and guaranteed treatments.

Condensation Control & Mould Treatments in Wearside, Sunderland & Durham

Say Goodbye to Condensation and Black Mould – For Good

Are you noticing steamed-up windows, musty smells, or mould patches on your walls or behind furniture? These are classic signs of a condensation problem – a common but often misunderstood issue in homes across Sunderland, Durham and the wider Wearside area.

At Wearside Damp and Timber, we offer effective, long-term condensation control and mould removal treatments to protect your home and your health.

Excessive moisture leads to black mould which is unsightly and hazardous to your health
Excessive moisture leads to black mould which is unsightly and hazardous to your health

What Causes Condensation?

Condensation forms when warm, moist air inside your home hits a cold surface (like windows, external walls or tiles).

The moisture in the air condenses into water droplets – the perfect environment for black mould to grow.

This is especially common in:

  • Bedrooms, kitchens, and bathrooms
  • Cupboards, under stairs, or behind furniture
  • Poorly ventilated homes (particularly modern homes with sealed windows)

In many cases, condensation and mould are worse in winter, when outside temperatures drop and homes are sealed tight to keep the heat in.

Condensation on cold window
Condensation on cold window

How to Identify a Condensation Problem

Look out for these common signs of condensation-related damp:

  • Streaming windows or window sills always wet
  • Musty smells in bedrooms, hallways or under stairs
  • Black mould on walls, ceilings or around window reveals
  • Damp patches or bubbling paint on external-facing walls
  • Mould or mildew growing behind wardrobes or furniture
  • Condensation inside cupboards or built-in storage

If you’re unsure whether it’s condensation, rising damp, or penetrating damp – we offer specialist damp surveys to correctly identify the cause.

Water forming on window sills is a sign of condensation related damp
Water forming on window sills is a sign of condensation related damp

Why You Shouldn’t Ignore Black Mould

Aside from looking unsightly, black mould can cause:

  • Respiratory issues and asthma flare-ups
  • Allergic reactions and skin irritation
  • Worsening health for children and elderly residents
  • Long-term damage to plaster, paint, and décor

It’s essential to treat the root cause – not just clean the surface. At Wearside Damp and Timber, we offer proven solutions that stop mould from coming back.

Black mould can cause respiratory issues such as coughing, wheezing, shortness of breath
Black mould can cause respiratory issues such as coughing, wheezing, shortness of breath

Our Condensation & Mould Treatment Options

Every home is different. That’s why we tailor our solutions to your specific situation, with a focus on ventilation, insulation and prevention:

  • Specialist Mould Cleaning & Additive Treatments: For minor surface growth, we use professional-grade mould cleansers and anti-fungal paint additives to remove mould safely and prevent regrowth.
  • Passive Ventilation Units: We install dehumidifier vents (passyfier vents) in affected rooms to improve air circulation and reduce localised humidity – ideal for one or two problem areas.
  • Positive Input Ventilation (PIV) Systems: Our most effective, whole-house solution. PIV units gently push out stale, damp air and replace it with filtered, dry air – balancing humidity and eliminating condensation at the source. Quiet, energy-efficient, and low maintenance.
  • Internal Wall Insulation: In homes with cold external walls, we can install insulation boards to raise wall temperatures and reduce condensation risk.

We don’t guess – we investigate. Our qualified surveyors carry out detailed inspections to identify:

  • The real cause of moisture
  • Humidity levels and air movement
  • The most appropriate treatment for your property layout and lifestyle

Whatever the cause, our experienced team can diagnose the issue accurately and recommend the right long-term solution.

PIV units help balance the humidty eliminating condensation
PIV units help balance the humidty eliminating condensation

How Much Do Condensation & Mould Treatments Cost in Wearside?

The cost of treating condensation and black mould in homes across Sunderland, Durham, and Wearside can vary depending on a few key factors:

  • The size of the property or number of affected rooms
  • The severity and spread of mould growth
  • Whether a localised treatment or whole-house ventilation system is required
  • The need for additional insulation or internal wall treatments
  • Accessibility of the affected areas (e.g. lofts, behind units, upper floors)

At Wearside Damp and Timber, we tailor every solution to your home’s needs. Whether you need a single room treated or a full-house Positive Input Ventilation (PIV) system installed, we’ll provide a clear, honest quote after your damp survey.

Fair, honest pricing

We believe in fair, honest pricing—no hidden fees, no inflated quotes. Our pricing reflects the quality of materials, the expertise of our team, and the long-term results we deliver. It’s not just affordable—it’s worth it.

Book Your Condensation Damp Survey Today

If you’re constantly battling black mould or damp air in your home, it’s time to get to the root of the problem.

Our local specialists in Wearside will assess your property, explain your options, and provide a clear, affordable solution.

Book your damp and timber survery in Wearside, Sunderland and Durham
Book your damp and timber survery in Wearside, Sunderland and Durham