H-BAU Technik PENTAFLEX® OBS crack control elements for in-situ concrete components consist of PENTAFLEX KB® joint sheets with the proven special coating and wings made of galvanised sheet steel that weaken the concrete cross-section. This forms predetermined cracks in the wall or floor The sealing element seals the resulting crack against pressurised and unpressurised water. This stops shrinkage cracks from occurring randomly – instead they form at the planned points, which are also immediately sealed.
PENTAFLEX® OBS

PENTAFLEX® OBS Wall
In-situ concrete crack control element with joint sheet

PENTAFLEX® OBS G-S Floor
In-situ concrete crack control element with joint sheet (smooth joint)

PENTAFLEX® OBS V-S Floor
In-situ concrete crack control element with joint sheet (interlocking joint)
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Price list 2025 Shell construction / facade
Valid from February 1, 2025, updated version from 27/09/2025.

General building authority test certificate PENTAFLEX® KB, FTS, OBS, ABS, Modul (general technical approval certificate)
General Building Authority Test Certificate

DGNB Product Declaration PENTAFLEX®
Environmental product declaration

Declaration of Performance PENTAFLEX®
Declaration

PENTAFLEX® - Technical information
Technical information

ETA 15/0003 PENTAFLEX®
Approval

LEED Product Declaration PENTAFLEX®
Environmental product declaration

Installation instructions PENTAFLEX® OBS
Please observe these installation and application instructions before installation. Our application technology and consulting engineers will be happy to answer any questions you may have.

Installation instructions PENTAFLEX® OBS Floor
Please observe these installation and application instructions before installation. Our application technology and consulting engineers will be happy to answer any questions you may have.

Services: From planning to utilisation
We support you at every step of your construction project. With high-quality products including dimensioning software for optimum planning. If the standard product is not suitable for your project, our manufacturers will configure a product that is precisely tailored to your needs.