4BM -THE COMPANY

What is 4BM?

4BM Blickenstorfer is an owner-managed sole proprietorship founded in 2025 by Marc Blickenstorfer

and has been operational since September 2025.

The company combines traditional building crafts, technical construction consulting, expert opinions, and practical renovations and repairs into a comprehensive service package.

4BM is aimed at builders, architects, planners, property managers, insurance companies, and entrepreneurs who need not just opinions but clear, reliable solutions to structural engineering issues.

The focus is on preserving existing building fabric, clarifying technical issues objectively, and

— where appropriate — directly implementing suitable measures in line with the latest technology.

An integrated approach – consulting, testing, and execution

4BM deliberately works in an integrated manner rather than in a compartmentalized way.

Consulting, measurements, expert opinions, and practical implementation are interlinked – depending on requirements, project phase, and objectives.

This results in solutions that are:

technically correct,
economically sensible,
practically implementable,
and sustainable in the long term.

Consulting, expert opinions & quality assurance

One of 4BM's core areas of expertise is technical construction consulting and expert assessment in the field of rigid coverings, substrates, and adjacent components, particularly interior waterproofing.

We support our clients in areas such as:

Damage and defects in coverings, substrates, or interfaces
Uncertainties in planning, execution, or detail design
Acceptance, inventory assessments, and renovation decisions
Second opinions and neutral technical assessments
Disagreements between parties involved
Assistance, location, and assessment of water damage

Our services include:

Technical construction consulting in all project phases
Expert reports and structured statements
Quality monitoring and structural engineering support
Root cause analysis with a focus on sustainable solutions
Renovation and action plans, including prioritization and feasibility
This allows us to create transparency, decision-making certainty, and trust—even in complex or conflict-ridden situations.

Measurements & objective condition analyses

Technical decisions require a solid foundation.

4BM therefore carries out targeted structural measurements and tests tailored to the component, damage pattern, and issue at hand.

Typical areas of application:

Substrate conditions
Water damage
Damage and defects
Documentation of critical areas for evaluation and traceability

Building measurements such as:

Moisture (component moisture, residual moisture, and readiness for covering)
Strength (adhesive strength and compressive strength)
Crack width measurements and cavity detection
Mold detection and salt analyses
Crack width and layer thickness checks
Component geometries (heights, gradients, angles, length dimensions)

At 4BM, measurements are not an end in themselves, but part of a thorough investigation of causes and solution finding.

Practice & execution – consciously integrated.

Practical implementation

At 4BM, practical implementation is not a by-product, but a conscious part of our range of services.

It is particularly evident in existing buildings whether concepts are feasible and solutions are truly sustainable.

4BM undertakes targeted renovation and repair work, especially where:

preservation makes more economic sense than replacement,
measures are technically sensitive,
a coordinated solution from a single source offers advantages.

The range of services includes:

Flooring renovations and spot repairs (ceramic tiles and natural stone, wood and vinyl flooring)
Joint renovations and refurbishments – from simple silicone joints to technical joint sealing
Minor concrete renovations
Masonry renovations in existing buildings
Customer masonry work and day construction sites

The work is carried out in a targeted, professionally sound manner and always in the context of the prior technical assessment.

The role of 4BM:

Consulting partner for technical questions
Quality supervisor for planning and execution
Mediator in the event of disagreements
Implementer when a clean solution also requires practical application
Construction service provider for execution and repairs

Or in short:

We think technically, act pragmatically, and keep an eye on the big picture.

Our principle Preserve what already exists for as long as possible—

with technically sound, economically viable, and durable solutions.

Contact

If you need clarity regarding coverings, substrates, interior waterproofing, defects, damage, or renovation decisions: