References - order by products

United Kingdom, London, Park Plaza Hotel

Koster Aquatecnic were approached to provide recommendations for sealing of the heavily leaking basement areas-containing kitchens, food storage/ food preparation areas, spa, plant rooms and accommodation.

The hotel is near to the river Thames and the below ground levels are subject to continuous water pressure due to the high water table. The original waterproofing system was based on the secant piled walls and a block wall internally to provide a basic drained protection system with drainage holes at various points draining to a lower level. Over time, the third floor had become completely saturated with all levels of the basement experiencing water ingress in varying levels from damp patches to significant ‘in rushes’ of water through the secant piles.

Firstly, the secant piles were exposed and thoroughly cleaned to remove dirt, salts, and loose particles. At the top of each basement level there was a concrete corbel connected into the piles, our research had shown that this was acting as a pathway for water to circulate around the building. We injected into this with Koster 2 IN 1 to seal the pathway between the corbel and the soffit and between the pile and the corbel.

The piles were then injected with the Koster G4 Gel. Before injection we slowed the water flow significantly with a combination of KD 2 Blitz and Koster Waterstop. 14mm boreholes were drilled directly through the piled wall at the point that the piles intercepted. Each borehole was closed with a Koster Super Packer, prior to drilling the next hole. The boreholes were drilled at 350mm centres in a vertical line between each pile.

The G4 Gel was injected using an acrylic gel pump.  Each packer was  injected in turn starting at the top and working to the bottom of the run.  Each packer was injected multiple times in rotation, until the Gel was set and the borehole was completely sealed. After this the packers were removed, and the boreholes filled with Koster Repair Mortar Plus.

As work progressed it became apparent that some areas were quite dry and other areas were leaking very heavily. In the areas of the heaviest ingress, we were still able to seal the leakage, by either adapting the speed of the G4 Gel by increasing the salt content (in strict accordance with instructions received from Koster Bauchemie) or by using Koster S4 Gel which has an even faster gel time, this proved to be very useful backup material.

After each area was sealed by injection a period of 5 weeks was allowed for observation before application of the cavity drainage system. However, in all cases no further in-rushes of water occurred.

Park Plaza Hotel, London, United Kingdom 
Fields of application
External basement waterproofing with curtain injection
Pressure injection of water bearing cracks
Repair of heavy water ingress between secant piles into five below ground levels at a prestigious London Hotel. 
Product applied
KOSTER Injection Gel G4
KOSTER Injection Gel S4
KOSTER KD 2 Blitz Powder
KOSTER Repair Mortar Plus
KOSTER Waterstop
General Contractor / Applicator
Prestec ltd 
Select product:


Select reference:
USA, Charlottesville, VA, Multi-Purpose Rental Property
USA, Santa Barbara, The Old Brooks Institute of Photography
Slovenia, Ptuj, renovation historical mansion from the 15th century
Portugal, Porto, Private Housing Building
Lebanon, North Lebanon, Chekka Chemical Factory
Lebanon, Beirut, Casa Verde Suites and Homes
Lebanon, Verdun Tower
Lebanon, Beirut, Manara 1033 Project
Lebanon, Beirut, Manara 3016 Project
Lebanon, Mount Lebanon, Villa
Lebanon, Mount Lebanon, Villa
Lebanon, Khaldeh, Waste water tank
Lebanon, North Lebanon, Halat
Hrvatska, Opatija, hidroizolacija sa unutarnje strane objekta
Montenegro, Krasici, Residential house
Россия, Москва, Климентовский переулок, Жилой дом
Deutschland, Frankfurt am Main, FAZ Verlagshaus
Deutschland, Dresden, Mehrfamilienhaus, Kelleraußenabdichtung
Deutschland, Bremen, Universum Bremen
Deutschland, Dresden, Mehrfamilienhaus, Kelleraußenabdichtung
Deutschland, Ferienanlage, Juist
Deutschland, Bremen, Mehrfamilienhaus
Deutschland, Ganderkesee, Privathaus
Deutschland, Verden, Privathaus
Deutschland, Bremen, Privathaus
Deutschland, Bremen, Privathaus
Deutschland, Oldenburg, Privates Wohnhaus
Deutschland, Paderborn, Mietshaus
Deutschland, Bremen, Keller in Mehrfamilienhaus
Deutschland, Flensburg, Marineschule
Deutschland, Ahrweiler, Privates Wohnhaus
Deutschland, Bad Salzuflen, Gradierwerk
Deutschland, Bremen, Privathaus
Deutschland, Aurich, Kelleraußenabdichtung
Deutschland, Berlin, MFH Müggelseedamm
United Kingdom, Factory Unit
Slovakia, Bratislava, Rehabilitation of a historic building
Iraq, Sulaymaniyah, private Villa
Iraq, Sulaymaniyah, Private Villa
Portugal, Marinhas, Private House
Portugal, Ponte de Lima, Private House
Bulgaria, Pernik, STUDENA Dam
Lithuania, Anykščiai, AB “Lifosa”: Pump Station on the bank river Nevezis
Panama, Panama City, Swimming Pool
Panama, Panama City, Pipe penetration of a fire protection water tank
Mexico, Nuevo León, Saltillo, Daimler Chrysler
Panama, Panama City, Ramada Hotel, Roof swimming pool
France, Argeles sur mer, Private Building
Hrvatska, Zagreb, vile - golf tereni Zagreb
Hrvatska, Primorsko-goranska županija, sanacija injektiranjem
Hrvatska, Krapina, Most Žutnica HC DC1
México, Nuevo León, Saltillo, Daimler Chrysler
Polska, Tarnowskie Góry, oczyszczalnia ścieków
Serbia, Belgrade, Open Olympic Swimming Pool „Milan Gale Muškatirovic“ 25.May
Serbia, Belgrade, Olympic Swimming Pool 11.april
Россия, Москва, Памятник архитектуры "Палаты Зиновьевых", 17-18 вв.
Slovenija, Ajdovščina, Sanacija stare kamnite primorske hiše
Slovakia, Schloss Voderady, Koester Crisin 76 concentrate
Slovakia, Žilina, výťahová šachta / Elevator Shaft
Slovakia, Bratislava, Plaváreň / Swimming pool Pasienky
Slovakia, Bratislava, Ventúrska ul., sanácia vlhkých stien / repair of muddy walls
Slovakia, Bratislava, Crowne Plaza
Slovakia, vodojem / Watertank
Slowakei, Bratislava, Injektáž starého divadla Aréna
Slowakei, Bratislava, Sanácia historickej budovy
United Kingdom, Ardnamurchan Point, Ardnamurchan Lighthouse
United Kingdom, London, Park Plaza Hotel
United Kingdom, London, Old Harrods Repository
United Kingdom, Factory Unit



Albania Austria Bosnia and Herzegovina Brasil Bulgaria China Croatia Czech Republic Denmark Finland Germany Ghana Greece Hungary Italy Japan Kazakhstan Kuwait Latvia Lebanon Macedonia Mexico Netherlands New Zealand Norway Panama Poland Portugal Romania Russia Senegal Serbia Slovakia Slovenia South Africa Spain Thailand Turkey Ukraine United Kingdom United States of America