Common Types Of Damp And Their Causes

Cavity Drain Systems (also known as Tanking) offer a highly effective way of waterproofing buildings throughout Brighton. The system Cavity drain systems provide a comprehensive waterproofing solution in Sussex. This system works by creating an air gap between the external face of the walls and any internal finishes, collecting water that penetrates the outer wall, and transferring it to a suitable drainage point.

Rising Damp

Rising damp is a common form of moisture that affects the walls of buildings. It occurs when groundwater rises through microscopic channels in bricks, much like straws, due to capillary action. This water contains salts that also move up the wall. The presence of these salts can cause damage to plaster and paint on interior walls and lead to structural issues if left untreated. Therefore, it is crucial to address rising damp as soon as possible by implementing effective treatments such as chemical injection or installing a damp-proof course (DPC).

Penetrating Damp

Penetrating damp, also referred to as “rain penetration,” occurs when an excessive amount of water enters a property through its external walls. This can happen at any level of a building and is often caused by defects in the roof tiles, damaged pointing, blocked weep holes or faulty seals around windows and doors. The result is that moisture seeps into the interior walls causing unsightly stains and damage to plasterwork, woodwork and other materials. It’s important to address this issue promptly as it can lead to structural damage if left untreated.


Condensation occurs when warm air comes into contact with cold surfaces or when there is excessive humidity in your home. This phenomenon is particularly common during the winter months, as central heating systems are frequently used to combat the chilly weather. The process of condensation can lead to a range of issues, such as dampness and mould growth, which can have negative impacts on both your health and property. To prevent these problems from occurring, it’s important to maintain proper ventilation within your home and ensure that any sources of excess moisture are addressed promptly.

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What’s The Purpose Of A Cavity Drain System?

A cavity drain system is a sophisticated waterproofing solution that involves the application of a cuspated membrane on both walls and floors, along with a channel at the junction of these two surfaces.

This specialised membrane philtres any water that penetrates it down to the slab, where it is then directed through the perimeter channel towards an underground sump pump.

The purpose of this innovative system is to prevent any moisture from accumulating within enclosed spaces by effectively draining away excess water before it can cause damage or create dampness.

By utilising this advanced technology, property owners can rest assured that their buildings are protected against potential water-related issues such as flooding or mould growth.

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How Is A Cavity Drain Membrane installed?

The installation of a cavity drain membrane is a meticulous process that requires the expertise of specialised professionals. Sussex Damp Treatments offers a comprehensive design and installation service for basement structural waterproofing, adhering to British Standard BS8102, which safeguards structures against groundwater. The system utilises polyurethane plastic sheets with dimples formed into them for cavity drain membrane systems, mechanically attached to walls to create a hollow space between the substrate and interior wall plaster finish.

This allows any ingressing water to be collected and drained away from the property; sump and pump systems can also be installed in the floor structure if necessary. To enhance UV value insulation-backed plasterboard may be used over the cavity drain membrane system as required. Our experienced surveyors have created this system according to stringent criteria, ensuring it meets our high standards of quality assurance with standard guarantees applying to these systems.

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Advantages Of Cavity Drainage Systems In Waterproofing

To retrofit a basement with waterproofing, it is essential to choose a product that can withstand groundwater pressure and has independent technical certification, such as the British Board of Agreement (BBA).

The design should meet the standards set by the British Standard 8102:2009 ‘Code of practice for Protection of Below Ground Structures Against Water from the Ground.’ It should also be easy to maintain in the future. A Type C system requires installing a cavity drain membrane system that extends to vaulted spaces and recess walkways.

For added security, we offer sophisticated monitoring systems that detect high water levels within pump sump chambers and monitor pump station performance. These systems run regular health cheques on pump stations in a non-invasive way, allowing us to troubleshoot electrical/mechanical failures before they occur. Our drainage system provides reliable support throughout its lifetime.

The End Of Wet And Musty Underground Areas

Basement conversions offer a wonderful opportunity to gain valuable space that can be utilised for various purposes, such as creating an additional bedroom, a fitness centre or even a playroom for children. Gone are the days of dark and damp cellars; converting wet basements and other below-ground spaces into dry rooms is now both cost-effective and enjoyable.

Sussex Damp Treatments specialises in waterproofing methods designed to upgrade existing basement rooms, waterproof new structures, and transform disused subterranean areas into comfortable living spaces.

Areas We Cover

  • Battle
  • Bexhill
  • Brighton
  • Crowborough
  • Eastbourne
  • Hailsham
  • Heathfield
  • Hove
  • Lewes
  • Newhaven
  • Peacehaven
  • Polegate
  • Portsladebysea
  • Rye
  • Seaford
  • Uckfield
  • Wadhurst
  • Arundel
  • Billingshurst
  • Bognor-Regis
  • Burgess-Hill
  • Chichester
  • Crawley
  • Cuckfield
  • East-Grinstead
  • Hastings
  • Haywards-Heath
  • Horsham
  • Littlehampton
  • Midhurst
  • Petworth
  • Selsey
  • Shorehambysea
  • Southwick
  • Steyning
  • Worthing

Cavity Drain Systems Waterproofing’ Costs

The cost of treatment, repair and damp proofing is influenced by various factors such as the size and architecture of the house, the extent of dampness, and the materials used. To provide you with a cost-effective quotation for our services, our knowledgeable staff will conduct a thorough examination of your property to understand the problem at hand and determine appropriate solutions.

Our team comprises fully skilled professionals who are always ready to assist you in organising a comprehensive damp and timber survey. For more information or to schedule an appointment with us, please call 01273 257 212 or visit our website for a quote today.

Why Choose Sussex Damp Treatments?

Sussex Damp Treatments is a highly reputable company that provides expert damp proofing treatments, wood preservation, and assessments. They are fully insured to ensure their clients receive the best possible service without any worries.  Their friendly staff is always available to answer questions or provide guidance on specific requirements.

Additionally, they offer no-obligation site surveys to assess the extent of the damage before providing recommendations for treatment options. If you require professional assistance in dealing with damp problems or preserving your wooden structures from decay or rotting issues, contact Sussex Damp Treatments now by calling 01273 257 212 to speak with an expert who can guide you through every step of the process.

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