Trusted Damp Proofing Specialists in London
Affordable Damp Proofing Backed by Experience
Damp can cause serious damage to any property if left untreated, with rising damp, penetrating damp, condensation, and lateral damp being the most common types. Each requires a specific approach to prevent and fix, from installing or repairing damp-proof courses and sealing leaks to improving ventilation and maintaining external walls. At K O Donoghue and Sons Ltd, we specialise in identifying the root cause of your damp problems and delivering effective, long-lasting solutions tailored to your property’s needs. Whether it’s a minor repair or a comprehensive damp-proofing treatment, our experienced team uses the latest techniques and quality materials to protect your home or commercial building from moisture damage, ensuring a dry, healthy, and comfortable environment year-round.
The main types of damp commonly found in properties are:
Rising Damp
This occurs when moisture from the ground rises through the walls by capillary action, usually due to a failure or absence of a damp-proof course (DPC). It often causes tide marks on walls, peeling paint, and a musty smell.
Penetrating Damp
This happens when water enters a property from the outside, usually through damaged roof coverings, broken gutters, cracks in walls, or faulty plumbing. It typically affects walls, ceilings, and sometimes floors, leading to damp patches and mould growth.
Condensation Damp
This type arises when warm, moist air inside the property meets cold surfaces, causing water to condense. It’s common in bathrooms, kitchens, and poorly ventilated rooms, and often results in mold growth and damp patches on walls or ceilings.
Lateral Damp
This is a form of penetrating damp where water penetrates horizontally through walls, often due to damaged or missing external render or poor drainage.
Trusted Damp-Proofing Solutions
The treatment for rising damp involves installing a chemical damp proof course (DPC) by injecting it into the affected walls. All affected wall plaster is removed up to a height of one metre, and once the injection is completed, the walls are re-rendered using a waterproof sand and cement render. Finally, a specialist plaster is applied to complete the treatment.
For penetrative damp, the process includes identifying and repairing any external defects such as cracked bricks, damaged pointing, or faulty seals around windows and doors. Once these issues are addressed, the walls are treated to prevent further water ingress
Say goodbye to damp problems for good. With over 30 years of experience, K O Donoghue & Sons Ltd provides expert solutions for rising damp, penetrating damp, and condensation. Our skilled team uses trusted methods to identify and resolve the root cause, protecting your property and ensuring a dry, healthy living environment for the long term. Get in touch today for a free quote.
