Specialists in Lift pit sealing, concrete and masonry waterproofing in existing and new structures to NHBC requirements.
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Basement Conversion & Waterproofing

Professional Remedial Services Limited specialise in structural waterproofing for cellar and basement conversions in Manchester, Cheshire and up to the Lake District. PRS Limited undertake structural waterproofing for Basement and cellar conversions in both new and existing construction. PRS Limited carry out Structural waterproofing to all below ground structures and buildings.

The range of products used for the water proofing of existing basements are from the counties top suppliers of cavity drain membranes such as Delta, John Newton, Wykamol. Cement renders from Sika and sheet systems from Fosroc.

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Structural Waterproofing below ground is a highly specialised operation and must be undertaken by contractors and designers who have the requisite levels of skill, understanding and experience, PRS have been underatking such work in basement conversions lift pits and concrete structures for decades.

Successful Basement conversion can be designed for the life of the property. Failures resulting from inadequate specifications or poor workmanship can be very costly.

Structural Waterproofing Systems

Waterproofing techniques are defined in BS8102, the British Standard for Protection of structures against water from the ground.

Members of the Property Care Association (PCA) must demonstrate an understanding of this standard and the Association code of practice for underground waterproofing. The PCA also requires that surveyors providing guidance on waterproofing must demonstrate their competence by gaining the Certificated Surveyor in Structural Waterproofing (CSSW) qualification.

The two types of waterproofing system commonly used in existing structures are.

Adhered waterproof membranes or type Awaterproofing systems (as defined in BS8102) are commonly multi coat renders, cement based coatings, bituminous paints or epoxy coatings. This form of waterproofing provides an unbroken barrier to water. These systems are applied to clean walls and floors and are usually protected and held in place by floor screeds, renders, plasters or other loading coats.

Cavity drainage systems or type C waterproofing usually utilise pre-formed high density drainage membranes, channels and sumps. These are designed so as to direct any water entering the structure back out in a controlled and managed way.Typically cavity drain membranes are installed to the walls and floors these direct water into drainage channels. The channels then allow water to be directed to sumps or drains so that it can be removed safely from the building.

Members of the PCA who specialise in structural waterproofing are able to consider the nature of the building and the clients design requirements to ensure that the correct method of waterproofing is selected and executed to the highest standard.