Builders Work in Connection (BWIC)

At MG Construction Services Ltd, we provide comprehensive Builders Work in Connection (BWIC) services to support the seamless integration of mechanical, electrical, and plumbing (MEP) systems within new-build and refurbishment projects.

Working closely with contractors, consultants, and services engineers, we ensure all associated structural, architectural, and access requirements are executed to the highest standard—safely, efficiently, and in full compliance with regulations.

Whether it’s forming openings for services, installing blockwork walls, or reinstating critical fire and acoustic barriers, our BWIC team enables smooth project progression without compromise on quality or compliance.

Our BWIC Capabilities Include:

Cutting, Drilling & Forming Openings

We carry out all necessary works to enable services to pass through walls, floors, and ceilings, including:

Core drilling
Diamond sawing
Chasing and breaking out for ducts, cable trays, pipework, and trunking
All openings are formed cleanly and safely, with provision for fire-stopping and future reinstatement.

Brick and Blockwork Packages

Our skilled bricklayers and blockwork teams deliver:

Service riser and plant room walls
Partition walls and enclosures
Blockwork backfilling and alterations
We can integrate these works into tight MEP programmes or standalone packages.

Screeding & Flooring Works

We provide floor screeding, levelling, and local repairs, whether for plant bases, service trenches, or final finish preparation. We also undertake reinstatement following M&E installation to restore continuity of finishes.

Fire-Stopping & Sealing

We install certified fire-stopping and penetration sealing systems, ensuring all service openings meet:

Fire resistance performance
Thermal and acoustic separation
Airtightness and compartmentation standards
Our team is trained in using approved fire-stopping materials and completing relevant documentation for compliance.

Reinstating Fire, Acoustic & Thermal Separation

Post-installation, we reinstate any disturbed or removed construction elements to maintain building performance:

Fire-rated partitions and barriers
Acoustic-rated linings and slabs
Thermal insulation systems
This is crucial to maintaining regulatory and warranty obligations on modern construction projects.

Reinforced Concrete (RC) Works

We construct small-scale RC elements, including:

Plinths
Upstands
Bases for plant and equipment

Trench Infills and Containment Channels

These are formed and finished with precision, often to accommodate bespoke M&E equipment loads.

Making Good & Finishing

Following service installations, we make good all finishes to match existing:

Patch plastering and skimming
Reinstating suspended ceilings
Repairing wall and floor finishes

Roof Access Ladders & Walkways

We fabricate and install bespoke access systems to roof plant zones, including:

Fixed vertical ladders
Step-over platforms
Anti-slip Walkways and Edge Protection

These installations meet all relevant access and safety standards, including Building Regulations and CDM compliance.

Regulatory Compliance & Certification

Where required, our BWIC work includes:

Building Regulations approval and coordination
Installation certificates for fire-stopping, structural fixings, and working-at-height systems (e.g. cleaning cradle restraint bolts)
Coordination with independent testers for safety-critical installations