overview Germany Eco-Bau Zimmermann GmbH Residential Building Demolition and Ecological Reconstruction

Residential Building Demolition and Ecological Reconstruction

Demolition of interior load-bearing walls in a 1970s single-family home to create an open-concept living space, followed by ecological reconstruction using sustainable materials

Steps

1 / 8 | Setting Up Containment Barriers and Floor Protection

Dieter and Markus are carefully establishing containment barriers and floor protection systems throughout the Müller residence to prevent dust migration and protect existing flooring and fixtures during the upcoming demolition work. They are laying down heavy-duty canvas drop cloths covered by temporary plywood walkways in high-traffic areas, securing plastic sheeting to create airtight barriers between work zones and living spaces, and installing sealed doorway barriers with zipper access systems. Dieter is directing the process despite his back pain, focusing on proper technique to maintain dust containment integrity while Markus handles most of the physical setup work. They're taping all seams with specialized construction tape to create proper seals, and are working systematically room-by-room to ensure comprehensive coverage while maintaining clear access paths for workers and emergency exits.

1

Conducting Initial Walkthrough for Demolition Preparation

2

Move and Protect Immovable Furniture with Plastic Sheeting

3

Lay down canvas drop cloths on all floor surfaces in work zones

4

Install plywood walkways on high-traffic paths for worker access

5

Secure Plastic Sheeting Barriers to Ceiling Joists

6

Install Zippered Doorway Systems at Transition Points

7

Seal all barrier edges and seams with specialized construction tape

8

Apply corner protectors to vulnerable wall corners along access paths

9

Set up negative air pressure system with HEPA filtration

10

Installing Temporary Foam Padding on Doorways

11

Place sticky mats at exit points from work zones to reduce dust tracking

12

Create designated tool and material staging areas on protected surfaces

13

Set up portable air scrubbers in demolition zone

14

Establish waste material transport paths with additional floor protection

15

Mark utility shut-off locations with high-visibility tape for emergency access

16

Testing Seal Integrity of Containment Barriers with Smoke Pencil

17

Taking Documentation Photos of Complete Protection System

18

Brief other team members on containment protocols and access procedures

2 / 8 | Installing Temporary Structural Supports for Load-Bearing Wall Removal

Dieter and Markus are installing temporary structural supports to maintain ceiling integrity during the planned demolition of load-bearing walls in the Müller residence. This critical safety step involves calculating load requirements, marking precise locations for supports, and installing adjustable steel posts and wooden beams to transfer the ceiling load before any demolition begins. These temporary supports will remain in place until the permanent ecological timber beams are installed in the later phase of the project. The team must ensure all supports are perfectly plumb, securely fastened, and adequately spaced to distribute the ceiling weight evenly throughout the demolition process.

1

Review Structural Engineer's Calculations for Load Requirements

2

Measure and Mark Floor and Ceiling for Support Placement

3

Lay protective material under all support locations to prevent floor damage

4

Transporting Steel Telescopic Posts and Wooden Beams to Work Area

5

Cut wooden distribution beams to proper length for ceiling contact

6

Installing Base Plates for Telescopic Posts

7

Position telescopic posts at marked intervals along the wall removal path

8

Place wooden distribution beams between ceiling and support posts

9

Carefully extending telescopic posts for load distribution

10

Check all posts with spirit level to ensure they're perfectly vertical

11

Insert securing pins in telescopic posts once proper height is achieved

12

Install Diagonal Bracing Between Posts for Lateral Stability

13

Gently hammer wooden shims where needed to ensure tight contact

14

Take photographs of completed support system for documentation

15

Mark 'DO NOT TOUCH' warnings on all temporary support elements

16

Conducting Load Test on Temporary Structural Supports

17

Measure and verify ceiling height at multiple points to confirm no sagging

18

Apply protective padding to posts where workers might contact them during demolition

19

Create Detailed Diagram of Support Placement for Project Documentation

3 / 8 | Locating and Safely Disconnecting/Redirecting Electrical Wiring and Plumbing in Demolition Areas

Before the demolition of load-bearing walls can begin, Dieter and Markus must meticulously identify, document, and safely disconnect or redirect all electrical wiring and plumbing services running through the walls marked for removal. This involves careful inspection using both non-invasive detection methods and targeted exploratory openings, creating detailed documentation of all service pathways, coordinating with specialized subcontractors as needed, and implementing temporary service solutions to maintain essential utilities to the rest of the house during renovation. The work includes identifying main utility feeds and shutoff points, verifying that circuits are properly de-energized, rerouting necessary services that must remain operational, and preparing detailed plans for reinstallation in the new open-concept layout.

1

Gathering and Reviewing Existing Building Plans

2

Turn off main electrical power to the work area at circuit breaker

3

Verify power is off using voltage tester on all outlets and fixtures

4

Shutting Off Water Supply to Demolition Areas

5

Using Detection Equipment to Map Wall Internals

6

Marking Detected Utility Locations with Colored Tape

7

Creating Exploratory Openings in Walls to Confirm Utility Paths

8

Photograph all exposed wiring and plumbing configurations for reference

9

Label all electrical circuits and plumbing lines for clear identification

10

Disconnect electrical junction boxes and cap wires

11

Installing Temporary Lighting from Unaffected Circuits

12

Draining Plumbing Lines into Buckets

13

Cap Water Lines Using Appropriate Eco-Friendly Materials

14

Document utilities requiring maintenance and rerouting

15

Create temporary bypass lines for essential plumbing that serves other parts of the house

16

Testing Remaining Active Circuits After Disconnection

17

Gas Line Detection and Professional Handling

18

Creating Detailed Utility Route Sketches for Reconstruction

19

Consulting with Familie Müller About Temporary Utility Limitations

20

Develop plan for integrating modern eco-friendly utility runs in new open-concept design

4 / 8 | Controlled Demolition of Load-Bearing Walls

The team is conducting controlled demolition of interior load-bearing walls in the Müller family's 1970s home using an 11kg demolition hammer. This critical phase follows careful preparation including temporary structural supports, utility disconnections, and protective barriers. Dieter Wagner is supervising the operation despite his back pain, ensuring proper technique is used to minimize vibration and maintain structural integrity of adjacent elements. The demolition is being executed in small, manageable sections, working from top to bottom of each wall. Workers are maintaining constant communication about structural behaviors and taking regular breaks to assess progress, check dust levels, and ensure temporary supports remain secure. Special attention is being paid to unexpected findings like hidden utilities or asbestos-containing materials, with protocols in place for immediate work stoppage if such materials are discovered.

1

Final Inspection of Temporary Structural Supports

2

Verifying Utilities Disconnection Before Demolition

3

Mark cutting lines on walls with chalk or marker

4

Position vacuum dust extraction system near demolition point

5

Test Demolition Hammer at Low Setting Before Full Operation

6

Begin controlled demolition at top section of wall

7

Using Chisel Attachment for Precise Cutting Along Marked Lines

8

Monitor for unexpected wiring or pipes during demolition

9

Continuously check temporary supports for any signs of stress

10

Spray water mist to suppress dust when vacuum system is insufficient

11

Remove debris in manageable batches to sorting area

12

Separate salvageable materials from waste during removal

13

Take periodic breaks to assess structural stability

14

Documentation of Unexpected Structural Elements

15

Adjust temporary supports as needed during demolition progress

16

Clean demolition hammer bits regularly to maintain efficiency

17

Rotate operators to prevent fatigue and repetitive strain

18

Check adjacent walls and ceiling for any crack development

19

Maintain clear communication about progress and challenges

20

Photograph demolition stages for client documentation

5 / 8 | Remove and Sort Demolition Debris for Ecological Disposal

Following the demolition of load-bearing walls in the Müller residence, Dieter Wagner and Markus Hoffmann are managing the systematic removal and sorting of demolition debris. Their focus is on proper waste segregation for ecological processing, maximizing material recovery for potential reuse. Despite Dieter's back pain flare-up, they've organized a methodical approach distributing the physical demands according to their capabilities. They've established separate collection points for concrete/masonry, metals, wood, plastics, and hazardous materials. Each material type is being sorted according to Eco-Bau Zimmermann's ecological disposal protocols, with special attention to identifying reusable timber elements and recyclable metals. The work requires careful handling of potentially sharp objects, dust management through regular misting, and efficient material transport using hand trucks and trolleys to minimize physical strain.

1

Establish Designated Sorting Zones

2

Mist debris piles with water sprayer to minimize dust during handling

3

Carefully pick through smaller debris to separate metals, plastics and recyclable materials

4

Identify and set aside intact timber elements for potential refinishing and reuse

5

Breaking larger concrete pieces into manageable sizes

6

Load sorted materials onto hand trucks and trolleys for transport outside

7

Transfer sorted materials to appropriate outdoor collection containers

8

Properly bag and label hazardous materials

9

Vacuum Work Area Progressively as Debris is Removed

10

Document quantities and types of salvaged materials for project sustainability metrics

11

Inspect embedded materials in plaster and concrete for potential recycling

12

Use magnetic sweepers to collect nails and metal fragments from the floor

13

Rotating Physical Tasks Between Team Members to Prevent Strain Injuries

14

Maintaining Clear Pathways for Debris Removal

15

Photograph Salvaged Elements for Client Approval

16

Perform hourly dust checks and additional misting as needed

17

Separate Copper Wiring and Plumbing for Specialized Recycling

18

Cover filled outdoor containers with tarps between loads to prevent dust dispersal

19

Apply Labels to Sorted Material Containers According to Ecological Disposal Regulations

20

Complete waste management documentation for company sustainability reporting

6 / 8 | Installing Eco-Friendly Structural Timber Beams

This critical phase involves installing engineered timber beams to replace the removed load-bearing walls while maintaining structural integrity. Dieter and Markus are working together to precisely position and secure laminated timber beams that will support the ceiling load. The process requires careful measurement, leveling, and secure anchoring to ensure the beams can safely transfer the building's load to the foundation. The team is using locally-sourced Douglas fir laminated timber beams that have been pre-cut to specifications at the workshop. Each beam must be perfectly level, securely fastened with appropriate brackets and hardware, and aligned with temporary supports that will remain in place until inspected. The installation follows low-VOC construction methods, using non-toxic adhesives and mechanical fasteners rather than conventional chemical treatments. The process is particularly challenging due to the precise tolerances required - even millimeter deviations could compromise structural integrity over time.

1

Review Engineering Plans and Beam Specifications for Timber Beam Installation

2

Measuring and Marking Exact Beam Locations on Floor and Ceiling

3

Prepare Beam Bearing Surfaces at Wall Connection Points

4

Pre-drilling Mounting Holes in Timber Beams

5

Install Metal Beam Hangers and Bracket Supports at Connection Points

6

Position First Beam End into Temporary Support Cradle

7

Raise and align beam using portable gantry system and levels

8

Secure beam to mounting brackets with appropriate fasteners

9

Fine-tuning Timber Beam Position with Laser Level

10

Apply Non-toxic Wood Sealer to Cut Ends of Timber Beams

11

Install steel connection plates at beam junctions

12

Tighten all fasteners to specified torque requirements

13

Install Secondary Support Noggins Between Primary Beams

14

Document Installed Beam Positions for Final Inspection

15

Verify beam levelness across entire span

16

Check that all temporary supports remain properly tensioned

17

Install Fire-Resistant Eco-Friendly Protective Wrapping Around Beams

18

Prepare Connection Points for Ecological Finishing Materials

19

Photograph completed structural beam installation for documentation

20

Clean workspace and prepare for next construction phase

7 / 8 | Reconstruct surrounding areas with sustainable materials as specified in ecological design

This task involves the reconstruction of the areas surrounding the removed load-bearing walls using sustainable, eco-friendly materials. The team is implementing the ecological design specified for Familie Müller's open-concept living space renovation. The work includes installing clay plaster walls, hemp-lime insulation, reclaimed wood trim, and natural oil finishes. The reconstruction must maintain the structural integrity of the home while achieving the desired open-concept feel. Special attention is given to sealing joints between new and existing surfaces, ensuring proper installation of eco-friendly materials, and maintaining clean air quality throughout the process. All materials are selected based on their environmental impact, indoor air quality benefits, and thermal performance to align with Eco-Bau Zimmermann's sustainable construction values.

1

Clay Plaster Application on Wall Surfaces

2

Install hemp-lime insulation in wall cavities

3

Place reclaimed wood trim pieces around new openings and transition areas

4

Installing FSC-Certified Wood Baseboards

5

Apply natural oil finishes to all exposed wood surfaces

6

Creating Seamless Transitions Between New Eco-Materials and Existing Home Surfaces

7

Installing Natural Fiber Wallboard

8

Apply mineral-based paint to finished surfaces using zero-VOC products

9

Seal all gaps and joints with natural caulking compounds

10

Creating Custom Trim from Reclaimed Materials

11

Installing Cork Flooring in Damaged Floor Areas

12

Building Decorative Shelving from Reclaimed Timber

13

Apply lime render finish coats to smooth transitions between new and old surfaces

14

Install electrical outlets and switches using eco-friendly components

15

Document all material installations with photographs for client portfolio

16

Testing Wall Surfaces for Adhesion and Finish Quality

17

Apply Natural Wood Preservatives to Exposed Beam Elements

18

Create Detailed Material Maintenance Instructions for Homeowners

8 / 8 | Perform Final Cleanup and Removal of All Protection Materials

The final cleanup phase involves the systematic removal of all temporary protection materials, containment barriers, and construction debris from the Müller residence. Dieter and Markus are focusing on restoring the home to move-in condition while ensuring all ecological standards are maintained. They begin with dismantling dust barriers, removing floor protection, and collecting remaining debris into sorted waste streams. The team is using HEPA-filtered vacuum systems to capture fine dust from surfaces, paying special attention to ventilation systems and air quality. Though tired after the completion of a demanding renovation project, they are methodically working through their final checklist, documenting the completed work, and preparing for client handover. Dieter's back pain is evident as he moves cautiously when removing heavier protective materials, while Markus takes on more of the physical tasks today.

1

Remove plastic sheeting dust barriers from doorways and room dividers

2

Carefully Pull Up Tape from Floors Without Damaging Surfaces

3

Roll up and remove floor protection (cardboard, plywood, plastic sheets)

4

Dismantle and remove temporary structural supports

5

Vacuum all surfaces with HEPA filter vacuum to capture fine dust

6

Wipe down newly installed timber beams and eco-friendly materials

7

Clean windows and glass surfaces smudged during construction

8

Sorting Construction Debris into Appropriate Waste Streams

9

Transfer sorted waste to designated collection areas in front yard

10

Clean and pack all tools for return to workshop

11

Check ventilation systems and replace any temporary filters

12

Sweep and mop all hard floor surfaces with eco-friendly cleaners

13

Conduct air quality test to ensure dust has been adequately removed

14

Remove Remaining Protective Coverings from Fixtures and Furniture

15

Check for and touch up any scuffs or marks on walls or surfaces

16

Take 'after' photographs for company portfolio and documentation

17

Prepare Final Documentation and Checklists for Client Handover

18

Conduct walk-through inspection identifying any remaining issues

19

Make Final Adjustments to Ensure Client Satisfaction

20

Clean up exterior areas where materials and waste were staged