CASE STUDIES
Basement Waterproofing - British Embassy, Algiers, Algeria
Remit
London Waterproofing Solutions (LWS) were asked by main contractor OSI Contracts to design and install a suitable waterproofing system in the basement within the British Embassy in Algeria.
Outcome
As the project was complex, the decision was made to send one of the qualified installation teams from LWS out to Algeria to complete the project.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump x 2
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ULTRA Free Lime Sealer
London Waterproofing Solutions are an approved installer of ULTRA Membrane Systems
 Basement waterproofing in Algeria |
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 ULTRA 20mm cavity membrane |
 ULTRA Basement tanking system |
 20mm cavity membrane on floor |
 Structural waterproofing to basement |
 Installing tanking membrane |
 Lime sealer applied to basement |
 Aqua channel being prepared |
Basement Waterproofing - Onne, Nigeria
Remit
Structural Waterproofing Services Ltd were asked to design and install a suitable waterproofing system in the basement of this large scale project in Onne, Nigeria.
The underground structure of this large port terminal needed to have a Grade 2 environment.
Outcome
Working closely with the CSSW qualified waterproofing surveyor at ULTRA Membrane Systems, it was decided that a Type C Cavity Membrane System would be the best option internally along with a flexible cementitious coating.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump x 2
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ULTRA Free Lime Sealer
Structural Waterproofing Services Ltd are an approved installer of ULTRA Membrane Systems
 Port terminal, NigeriaConstruction of a large port terminal in Onne, Nigeria. |
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 Concrete pour into basementConcrete is being poured into the basement |
 Steel reinforcement installedSteel reinforcement is being lowered into position |
 Free Lime SealerTo prevent limescale, Free Lime sealer is being applied to new concrete on basement walls and floor |
 Concrete on ULTRA 20mm MembraneConcrete is being laid on top of the ULTRA 20mm Floor Membrane |
 ULTRA 8mm Membrane on wallsAs part of the cavity drainage system, ULTRA 8mm Membrane has been fitted to the basement walls |
 Sealed membrane jointsAll joints have been sealed with double sided tape and 150mm wide cornertape |
 Repair work to concreteThe concrete required some repair work before the ULTRA cavity membrane system could be applied in this basement |
 Concrete joint fillingThe concrete joints needed to be grouted and repaired |
 ULTRA 8mm and ULTRA 20mm membraneULTRA 8mm Membrane has been fitted to basement walls along with ULTRA 20mm Membrane to basement floors |
Basement Waterproofing - London
Remit
AP Gooch LTD won this contract to design and install a waterproofing system in this iconic building near Tower Hill, London which was to be converted into a gymnasium.
Outcome
AP Gooch's very own CSSW Surveyor decided to use a combined system using a Type A waterproofing system over the existing soffits. The steels were grit blasted and sprayed with reinforced concrete to give strength and protection for years to come. The soffits were grit blasted and coated with two coats of Vandex BB75E and protected with waterproof renders. The floor slab and upstand were designed in conjunction with engineers calculations to comply with the British Standards.
The walls and floor had a Type C Cavity Drain System installed in conjunction with BS8102 2009 with two sump chambers containing a dual pumping system. This project was over 500 square meters and completed in 4 weeks.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump x 2
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ULTRA Free Lime Sealer
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
 ULTRA 8mm MembraneULTRA 8mm Membrane and ULTRA 20mm Membrane on basement walls and floors. |
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 Basement Waterproofing LondonCavity membrane installed in London |
 Soffit waterproofingWaterproofing a basement ceiling |
 Soffit tankingTanking a soffit in a basement |
 Type A WaterproofingType A waterproofing on a basement soffit |
 Basement Waterproofing in LondonA basement is being converted into a gymnasium in London |
 Basement preparationPreparing a basement before a Type A and Type C waterproofing system is installed |
 Steelwork in basement slabThe steelwork is being installed in the basement before the concrete pour |
Basement Conversion - Bolton
Remit
The owners of this 3 storey property wanted to increase living space but couldn't extend due to lack of land at the rear. The property benefited from having an original basement that was currently being used for storage. It was an ideal opportunity to convert the basement into the extra space required.
Outcome
The basement required small structural alterations relating to lintels above openings before a new concrete slab was poured. ULTRA 8mm Membrane was applied to the walls with ULTRA 20mm Membrane being laid on the floor. An ULTRA Twin Sump Pump has been fitted to remove the water that reguarly enters the basement.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
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ULTRA Free Lime Sealer
AG Damp Proofing are an approved installer of ULTRA Membrane Systems
 Basement converted to bedroom |
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 Basement conversion before and after |
 Pre-cast sump pump chamber |
 Preparing a basement ready for water |
 New concrete slab in basement |
 Cellar tanking in Bolton |
 ULTRA 8mm Membrane on basement walls |
 Sump pump to be fitted in basement |
 ULTRA Membrane applied to walls |
 WC in cellar conversion Bolton |
 Bathroom in basement conversion |
 Waterproofing a cellar in Bolton |
 Cellar converted to bedroom |
 Cellar conversion Bolton |
 Basement conversion Horwich, Bolton |
Basement Conversion - London
Remit
This residential basement in London required a quick turnaround and needed to be completed in time for Christmas. The client wanted to use the space as a cinema room and gymnasium.
Outcome
Just 2 operatives took only 3 days to complete the preperaion work and installation of the ULTRA Membrane Type C Cavity Drainage System.
Complying to BS8102:2009, the system includes adequate ventilation and a battery back up system.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
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ULTRA Battery Back Up Pump
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ULTRA Free Lime Sealer
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
 Vaulted basement waterproofing |
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 Preparing the basement walls |
 ULTRA 8mm Tanking Membrane |
 ULTRA Membrane basement tanking |
 ULTRA 8mm Basement Tanking |
 AP Gooch waterproofing a basement |
 Vaulted basement ceiling tanked |
New Build Garage Waterproofing - Lancashire
Remit
A large garage, designed to house several vehicles was to be built into a hillside. External waterproofing was to be applied but the owner was advised to have an internal Type C cavity drainage system installed as access for maintenance externally was difficult.
Outcome
The internal walls were covered by ULTRA 8 Membrane with ULTRA Drainage Channel installed around the three retaining walls. The floor will be covered by N-Virol Epoxy Floor Seal.
As the front of the structure is open (not underground) there is no need for a pump. Any water ingress will fall by gravity into the outside groundwater drains.
Materials Specified
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ULTRA 8 Membrane 2.4mtr x 20mtr
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ULTRA Silver Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Drain Channel, Inspection Ports
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N-Virol Epoxy Floor Seal GREY
 Car garage waterproofing |
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 N-Virol Epoxy Floor Seal |
 Waterproofing a car garage |
 Epoxy resin floor seal |
 Garage Waterproofing |
 Waterproofing a garage |
 Basement built into a hill |
 ULTRA Membrane on retaining wall |
 Tanking a basement retaining wall |
Basement Conversion - Suffolk
Remit
A family in Suffolk were looking to extend their home into an unused basement. AP Gooch were asked to provide a complete conversion package including a fully maintainable waterproofing system along with the interior finishes such as electrics and plasterwork.
Outcome
In just 6 days the basement was complete. ULTRA cavity drain membrane was installed on the walls and floor creating a dry internal space. An ULTRA Twin Pumping System was fitted to deal with any water that enters the basement.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
 Finishing plaster applied |
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 Basement Waterproofing |
 ULTRA Twin Pump is accesible |
 Chimney breast is waterproofed |
 Curved ceiling makes work tricky |
 ULTRA 8mm Membrane on walls |
 ULTRA Membrane behind plasterboard |
 Final plasterwork being completed |
Basement Waterproofing - Bristol
Remit
This basement was flooding regularly and the owners were looking to convert it into dry storage space. AP Gooch advised the client that the only option was to install a Type C waterproofing system from ULTRA Membranes.
Solution
It took only 2 days to complete the waterproofing on this project which included the installation of an ULTRA Twin Pump to deal with the water ingress.
ULTRA 8mm Membrane was installed on the walls with ULTRA 20mm Membrane on the floor before the original floor was reinstated.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
 ULTRA Twin Pump System |
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 Cellar conversion almost done |
 Vaulted Basement Conversion |
 Preparing the wall for membrane |
 Original floor reinstated |
 Timber battens allow for drylining |
Basement Conversion - TESCO Express - Bedford
Remit
AP Gooch were asked to design and install a waterproofing system for one of their large commercial customers, Tesco. Tesco wanted to utilise the basement in to order to create more storage space which naturally commanded a dry environment.
Solution
ULTRA 8mm Membrane was installed on the walls with ULTRA 20mm Membrane on the floor incorporating a fully maintainable drainage system to deal with potential water ingress.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
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ULTRA Free Lime Sealer
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
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Residential Basement Conversion - Knightsbridge, London SW7
Remit
AP Gooch were privilaged when asked to create a brand new living space in the basement of this beautiful period property within the heart of Knightsbridge, London. The client wanted to exploit the existing basement which was previously left unused.
Solution
ULTRA 8mm Membrane was installed on the walls with ULTRA 20mm Membrane on the floor incorporating a twin pump system with the added security of a battery back up system.
Materials Specified
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
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ULTRA Battery Back Up System
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ULTRA Free Lime Sealer
www.apgoochbasementwaterproofing.co.uk
AP Gooch are an approved installer of ULTRA Membrane Systems
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New Build Basement - Rossendale, Lancashire
Remit
This client decided to include a two-storey basement into their new build executive home.
The property owner is a keen classic car enthusiast and requested a large underground garage to house his prized collections. It was no surprise that the Architect needed to design a fully waterproofed basement in order to create a dry and well ventilated internal environment.
Solution
The retaining walls are made constructed from waterproof concrete and an internal Type C cavity drain membrane system was installed.
Two ULTRA Twin Pumping Systems were required along with two ULTRA Battery Back Up Sytstems.
Materials Used
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump (x 2)
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ULTRA Battery Back Up System (x 2)
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ULTRA Concrete Sealer
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Basement Conversion - Maidstone, Kent
Remit
The owners of this property were looking to convert their basement into a home office and gym area. Previously it was used for storage, although it had not been waterproofed and was suffering for an ingress of groundwater and salt migration through some of the walls.
Solution
The original floor was excavated and lowered to accomodate the new concrete slab and insulation before the waterproofing materials were installed throughout. An ULTRA Twin Pump system was also installed to work in conjunction with the perimeter drainage channel to deal with any further water ingress.
Materials Used
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ULTRA 8 Membrane
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Twin Pump
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ULTRA Concrete Sealer
 Basement ConversionUltra Membranes |
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 Basement ConversionUltra Membranes |
 Basement ConversionUltra Membranes |
 Basement ConversionUltra Membranes |
Basement Conversion - Chorley, Lancashire
Remit
This property is built into the side of a hill and has three earth-retaining walls.
The clients complained of water running down the walls during and after heavy rainfall. The owners wanted to turn the unused basement into a more habitable living space which could incorporate a large open living area. They also had the intention to sell the house in the near future and with the added benefit of extra living space in the converted basement, it will hopefully add significent value to the property.
Solution
The contractor was asked to carry out the initial groundworks, the relevant structural waterproofing and the interior fit out upto decoration stage.
As the property was not completely underground, it did not require a pump system. However, drainage channel was installed around the floor perimeter to deal with the water ingress. The drainage channel leads to the rear of the property and into an external soak-away.
Materials Used
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ULTRA 8 Membrane
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ULTRA 20 Membrane
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ULTRA Rope
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ULTRA Brick Plugs and Seals
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ULTRA Double Tape
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ULTRA Cornertape
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ULTRA Drain Channel, Inspection Ports and Outlets
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ULTRA Concrete Sealer
 Basement ConversionUltra Membranes |
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