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Damaged interior wall with severe damp staining peeling paint and flaking plaster behind radiator

Rising damp treatment in Durham with proven DPC systems

Specialist rising-damp diagnosis. Proven damp-proof course systems. Free, no-obligation survey.

Call our team to book your free damp survey

The difference we deliver

30 years tackling damp

Decades of hands-on expertise used to distinguish rising damp from condensation, ventilation problems and external moisture.

Free, no-obligation surveys

We evaluate wall conditions, moisture patterns and possible salt contamination at no cost.

Proven DPC systems

We install chemical damp-proof course systems designed to stop ground moisture rising through masonry.

What rising damp means for your property

Rising damp happens when moisture from the ground travels upward through brickwork and mortar because a damp-proof course has failed, broken down or is missing. Porous masonry absorbs water and allows it to move slowly up through the wall.

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It usually affects the lower part of walls and can cause damp patches, tide marks, peeling paint or wallpaper, flaking plaster, white salt deposits and a musty, cold feeling. If left untreated, rising damp can damage plaster, decorations, skirting boards and timber.

 

We carry out specialist diagnosis to confirm whether you are dealing with rising damp or another moisture problem, such as condensation, poor ventilation or external water penetration. That distinction matters because the correct treatment depends on the true cause.

Brown tide mark staining on lower wall plaster above skirting board and carpet
Severe black mould growth and damp damage on lower wall next to white wooden door frame

Signs and treatment details worth knowing

  • Moisture rising from ground level

  • Tide marks on lower internal walls

  • Peeling wallpaper and flaking plaster

  • White salt deposits or contaminated plaster

  • Musty smells and cold, damp rooms

  • Specialist diagnosis before treatment

  • Chemical damp-proof course systems

  • Preparation and replastering where necessary

  • Early intervention to limit further damage

  • Free survey with no obligation

How we treat the problem properly

Treatment normally begins with a detailed survey of the affected wall, including its construction, moisture pattern and signs of salt contamination. Once rising damp is confirmed, we can inject damp-proof cream into a mortar course to create a barrier that reduces moisture movement through the wall.

In many cases, contaminated plaster must be removed and replaced because salts left by rising damp can attract moisture and continue damaging the finish. We explain any necessary preparation, replastering and drying requirements before work begins. Our approach combines diagnosis, damp-proof course installation and appropriate remedial work to provide a long-term solution rather than a temporary surface repair.

Our damp-proof course treatments are designed to provide effective resistance for at least 20 years. Where wider issues are contributing to moisture, our exterior protection and ventilation services can help protect external surfaces and improve airflow. Northeast Damp and Ventilation keeps the advice plain and the workmanship reliable, so you know exactly what your property needs.

Frequently asked questions

Get clear answers before the damage spreads

Ring us to arrange your free rising damp treatment survey.

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