Verified by manufacturer 5 months ago
BBA Agrément Certificate
Certificate type
EPD
Certificate type
ISO 9001 Quality Management
Certificate type
BBA Approved waterproofing system for pile caps in Basement slab design or in Radon sensitive areas.
The waterproofing of concrete-piled foundations can be problematic especially when bituminous liquid or sheet membranes are being used. You cannot use these types of materials over pile heads and pile caps because they do not have the bearing capacity to support the applied load.
Koster Aquatecnic offers a hybrid system which presents a unique system to treat this problem. By using the Koster NB1 Grey over the pile head it (a crystalline cementitious material) it is able to accept the load applied by subsequently poured ground beams or foundation slabs without acting as a separation membrane. This waterproofing can then be linked to the area or surrounding bituminous waterproofing over the rest of the slab.
An highly effective, economic and easily applied material that can be used in all Grades of below ground waterproofing as per BS 8102.
The waterproofing of pile heads has to withstand heavy loads from the whole building and needs be easily connected to the area waterproofing.
This system contains the following components:
Following preparation to remove any debonding materials or loose/damaged concrete, prime the concrete pile head using Koster Polysil TG500. Once the primer has cured, the surface has to be levelled and re-profiled with Koster Repair Mortar Plus.
Koster NB 1 Grey is then used to waterproof the pile head. Brushed over the smooth pile head, and onto the surrounding blinding layer then left to cure.
The waterproofing on top of the blinding layer is made with Koster Deuxan 2C. This is applied in two coats with Koster Glass Fibre Mesh laid into the fresh first layer. Before pouring the concrete for the floor slab a gliding layer consisting of two layers of customary PE-Foil is applied between the waterproofing and the concrete - acting as a slip layer. Protect the waterproofing layer from mechanical damage when continuing with the application.
Please contact the Koster Technical team with any questions or for specific design advice - technical@kosteruk.com.
Color | Grey |
Finish | Trowelled |
Material | Bitumen Cement |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | Ten year |
Uniclass | |
CAWS | J30/130 Cold-applied damp-proofing J30/10 Cold-applied damp-proofing J20/110 Tanking J30/110 Cold-applied tanking |
Product range |
Substrates | |
Preparation | Ensure that dirt, oil or de-bonding materials are cleaned off. Any active water ingress must be treated first using Koster KD System or Koster Injection Resins. |
Pointing and filling mortar | Koster Repair Mortar Plus. |
Primer | Koster Polysil TG500. |
Tanking | |
Coatings | Koster NB1 Grey applied over the profiled pile head. |
Reinforcement | Koster Glass Fibre Mesh. |
Pipe sleeves | Koster KSK SY15. |
Waterproofing layer | KÖSTER Deuxan® 2C. Guidance for specification option:
|
Contains Red List materials | No |
Country of material origin | Germany |
Country of product manufacture | Germany |
Recyclability | No |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
BBA Agrément Certificate
BBA Certificate for Koster NB1 Grey
BBA Agrément Certificate
BBA Certificate for Koster Deuxan 2C
EPD
Koster NB1 Grey Environmental Product Declaration
EPD
Koster Repair Mortar Plus Environmental Product Declaration
ISO 9001 Quality Management
Koster Bauchemie AG - ISO 9001 Certificate