BIH Baugesellschaft mbH offers a comprehensive range of services for the repair, restoration and long-term preservation of civil engineering and building structures.
Repair of concrete surfaces and components in accordance with DIN EN 1504, including cathodic corrosion protection and coating systems.
Learn moreMaintenance and restoration of bridges, tunnels, culverts, retaining walls and hydraulic structures.
Learn moreModernization and repair of residential and commercial properties, façade restoration, structural reinforcement.
Learn moreSurface and injection waterproofing against pressing and non-pressing water, exterior basement waterproofing.
Learn moreForce-locking and flexible crack grouting as well as injection methods for structural reinforcement.
Learn moreCondition assessment, damage analysis, concrete cover measurement and development of repair concepts.
Learn moreCoating systems and cathodic corrosion protection for steel and reinforced concrete components.
Learn moreTechnical oversight and quality assurance throughout the entire construction execution.
Learn moreTechnical consulting, restoration concepts and cost estimation already at the planning stage.
Learn moreElectrical repair, DGUV V3 testing, charging infrastructure and lighting refurbishment by our electrical engineers.
Learn moreEnergy refurbishment concepts, energy certificates, thermography and funding advice from a single source.
Learn morePermanent condition monitoring with sensor technology: cracks, moisture, strain – detecting changes before they become damage.
Learn moreWhat our service areas cover in concrete terms – and which measures we typically carry out.
Concrete is durable – but not maintenance-free. Carbonation, chlorides and freeze-thaw cycles attack the substance and, at an advanced stage, endanger the reinforcement and thus the load-bearing capacity. We professionally restore damaged concrete components before a surface defect becomes a structural safety problem.
Every measure is based on DIN EN 1504 and the recognised rules of engineering: from removing damaged concrete surfaces and protecting the exposed reinforcement against corrosion to reprofiling and the final surface protection.
Bridges, tunnels, retaining structures and culverts are exposed to particular stresses – and carry particular responsibility. We maintain and rehabilitate civil engineering structures for public and private clients, including under live traffic or ongoing operation where required.
From individual defects identified in structural inspections to full-scale rehabilitation, we handle the complete measure including traffic safety measures and scaffolding in coordination with our partners.
Without regular maintenance, residential and commercial properties lose substance, function and value. We refurbish façades, balconies, underground car parks and load-bearing components in existing buildings – well coordinated and with minimal disruption to occupants.
Whether a targeted repair or a comprehensive modernisation: we develop the economically sensible solution for owners, property managers and businesses.
Water ingress is one of the most common causes of damage in construction – from damp basement walls to leaking parking decks. We permanently waterproof structures against both pressing and non-pressing water.
Depending on the component and exposure, we use sheet waterproofing, injection methods or coating systems – in line with the relevant waterproofing standards.
Not every crack is a defect – but every crack deserves a professional assessment. We evaluate the cause and width of the crack and select the appropriate repair objective on that basis: rigid structural bonding, flexible filling or sealing.
The work is carried out by injection using grouts matched to the specific application – fully documented.
A reliable repair starts with a reliable diagnosis. We systematically record the current condition of your structure and provide the data basis for the repair concept, tendering and cost planning.
We summarise the results in a clear report with prioritised recommendations for action – from immediate needs to medium-term maintenance planning.
Corrosion is the silent adversary of every steel and reinforced concrete structure. With coordinated coating systems and active protection methods, we stop ongoing corrosion processes and prevent new ones.
From preparatory blasting to the multi-layer coating build-up, we handle the complete execution including film thickness checks and documentation.
Quality is created on site – and that is where it must be assured. Our specialist site management accompanies repair measures from work preparation through to final acceptance.
We check the execution against the concept and the bill of quantities, coordinate the trades involved and document every relevant work step.
The most economical repair is the one that fits the structure and your objectives. We advise owners, property managers, planners and public clients from the early project phase onwards.
From the initial assessment through the refurbishment concept to tendering support, you get planning certainty from a single source.
With our team of electrical engineers, we extend structural maintenance to the electrical side – from repairing the building installation in the course of a refurbishment to charging infrastructure in the freshly refurbished underground car park.
This gives you construction and electrical services coordinated from a single source: one contact, one schedule, one documentation.
Repair and energy efficiency belong together: if the façade is being refurbished anyway, the energy upgrade should be considered at the same time. Our energy engineering specialists develop concepts that combine preservation of the building fabric with energy savings.
On request including funding advice – from BEG subsidies to an individual refurbishment roadmap.
For us, maintenance does not end with the final acceptance. Using modern sensor technology, we permanently monitor the condition of refurbished and damage-prone structures – and detect changes before they become defects.
Our civil and electrical engineers jointly develop the right monitoring solution for your structure.
In five steps: on-site structural diagnostics, an individual repair concept, a transparent quotation with schedule, professional execution by our teams, and final acceptance with complete documentation.
Yes. Diagnostics, concept development and execution all come from a single source. This avoids losses at interfaces and ensures the concept is practically buildable.
Yes. From our headquarters in Kassel we handle projects all over Germany, with regional focuses in Hamburg, Berlin, Frankfurt am Main and Munich.
That depends on the structure, the damage pattern and the repair objective. After an initial assessment you receive a comprehensible cost estimate from us – the initial consultation is free of obligation.
Yes. We carry out both targeted individual measures such as crack injection or balcony refurbishment and complex large-scale projects on civil engineering structures.
We create a tailored restoration concept for your project.
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