If your basement needs to be waterproofed, with care an effective waterproofing system is achievable with Pro-Tech.

As one of the leading basement waterproofing experts in Ireland, attention to detail is our priority from the moment you contact us. Each proposal is to an individually designed specification for the project to hand. Suitability of the structure to accept a system is paramount. Recommendations are based on the best preferred system, i.e. cementitious tanking, cavity drain membrane, pre-applied bonded membranes.

There are several reputable and well established Companies which manufacture these systems.

Pro-Tech have been involved in extensive research and development with the best manufacturers of generic materials throughout Europe for many years and continue to advance the product range and training techniques to establish the best possible solutions most suitable to our climate and building tradition.

Types of Waterproofing

Cementitious tanking

This is a polymer modified cement based protective and waterproof slurry coating. When mixed and applied correctly it forms a highly effective damp proof membrane that can be applied to brickwork, concrete, blockwork or any cement based surface.


  • -Waterproofing of basement areas.
  • -Damp proofing of old buildings.
  • -Water proofing of new build basements.
  • -Treatment of rising damp and penetrating damp to walls.
  • -Prevention of rising damp in floor screeds.
  • -Water proofing of balconies.
  • -Forming bund protection against liquid spillage

Cavity drain membranes

Cavity drain membrane

These membranes are made of high density studded polyethylene sheets (HDPE) and polypropylene (PP) which are impervious to water and vapour proof. The membrane is available in various stud height in order to with the drainage capacity required for each project.
When fixed against a structure the studs form permanent cavities between the structure and the internal finishes.
The membrane can be used as a sealed system or a ventilated system.

Sealed Cavity Drain System

In any project where active ground water is evident or expected the “sealed system” is recommended. The type of membrane used depends on the required finish and drainage flow rate.
The cavity drain membrane is installed to both the wall and floor areas. In some cases it might be necessary to install the membrane to the underside of a vaulted ceiling or the underside of a slab.

All membrane joints, fixings, service penetrations are sealed with tapes and liquid membranes.

Where active ground water is evident or expected, a drainage system to include a sump and pump should be incorporated into the overall design.

Ventilated Cavity Drain System

In above ground situations or where no running water is expected, the “ventilated system” can be used. The membrane is ventilated at top and bottom or by a vent through an external wall. A 200mm lap in membrane joints is sufficient.

This method is used in Heritage type projects as a general damp proofing system. The fabric of the building remains unchanged but the new internal surfaces are dry.

Both dry lining or plaster finishes can be used with the ventilated system.

Bituthene membranes


Bentonite is a patented needle punched liner for civils application and basement waterproofing.

It’s proven performance and ease of installation, coupled with self sealing laps has made Bentonite a favourite of contractors and designers.

The ability of Bentonite to be installed in virtually any weather means that costly delays to projects are
also avoided.

It is also an all in one solution with no hidden additional extras, such as tapes, protection boards and
drainage geomembranes.

The Bentonite waterproofing membrane consists of a continuous layer of natural sodium Bentonite, sandwiched between a needle-punched polypropylene (PP) geotextile as the cover layer and a slit film woven geotextile as the carrier layer.

The components are needle-punched uniformly together across the entire membrane. The cover layer of the membrane is impregnated during manufacture with an additional layer of natural sodium bentonite over its entire surface area to provide self sealing laps everywhere.


  • -Natural sodium bentonite is an ideal sealing material due to its ability to swell when in contact with water.
  • -Sodium bentonite is inert and can be used in aggressive environments.
  • -The gel like consistency allows it to mould to the required profile.
  • -The outer layer non woven geotextile is impregnated with additional sodium bentonite over its entire surface for self sealing laps everywhere.
  • -The small particle size reacts immediately with water giving immediate effect.
  • -Robust and weather resistant. installation
  • -High puncture resistance.
  • -No other protection is required between the reinforced concrete and the backfill.
  • -Will also act as a radon barrier when pre-hydrated with clean water.
  • -Bentofix BFG5000 has attained BBA certification,
  • -Certificate number 05/4257
  • Bentonite

  • Bentonite

  • Bentonite

  • Cementitious waterproofing to basement

  • Waterproofing to balcony

  • Damp proofing walls and floor

  • Basement waterproofing

  • Caption

  • Damp proofing with cavity drain membrane

  • External damp proofing of walls

Pro-Tech - Over 30 Years Experience


In order to function effectively basements, whether they are in buildings under construction or undergoing refurbishment, will need to achieve a level of dryness compatible with their usage.


For example, an underground car park at 75% relative humidity, but which has a few minor damp patches in out of the way corners and also condensation on the walls, may be considered to be dry. Whereas an office, which has no visible dampness at all but has a relative humidity of 75%, may be perceived as being damp, because papers could curl and the occupants would find the atmosphere muggy.

Pioneering Approaches to Solve Your Basement Problems

Table 1 of BS 8102:1990 (Code of Practice for Protection of Structures against
Water from the Ground) defines performance levels for the dryness of buildings
in four grades, as follows:

basement waterproofing Ireland

Table 1 does not define what it means by ‘dry’ environment or ‘totally dry’
environment for Grade 3 and 4, nor how much moisture vapour is tolerable
for Grade 2.

However, it would be reasonable to assume that the dryness level required for
the Usage Grades could be summarised as follows:

basement waterproofing Ireland

An example of a damp vaulted cellar in Ely Place. Waterproofed with
cementitious tanking and a one coat breathable lime based plaster.


basement waterproofing Ireland


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