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CONTROL: THE CONSTRUCTION FINANCIAL OPERATING SYSTEM 8 STEPS · 60 DAYS · YOUR BUSINESS FINALLY MAKES SENSE JOSH LUEBKER · MASTER ELECTRICIAN · $2.1B+ IN PROJECTS MANAGED TRADE CONTRACTORS FROM STARTUP TO $50M · AVAILABLE OCT 1, 2026 CONTROL: THE CONSTRUCTION FINANCIAL OPERATING SYSTEM 8 STEPS · 60 DAYS · YOUR BUSINESS FINALLY MAKES SENSE JOSH LUEBKER · MASTER ELECTRICIAN · $2.1B+ IN PROJECTS MANAGED TRADE CONTRACTORS FROM STARTUP TO $50M · AVAILABLE OCT 1, 2026
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Home / Trades / Shoring & Shielding
SHORING & SHIELDING CONTRACTORS
PHASE 2 · CIVIL & UNDERGROUND

Why Shoring & Shielding Contractors Lose the Rental Math

QUICK ANSWER

Shoring and shielding contractors lose the rental math when daily rates on boxes and systems go unrecovered past the planned duration, engineer of record costs get spread across nothing, and a job that runs long keeps billing at the original price. CONTROL costs every system by the day and puts duration language in writing.

BY JOSH LUEBKER · UPDATED JUL 2026 · COMING SOON
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PROOF FROM A RELATED TRADE
-$67K to +$737K Net Profit
Civil contractor, same system.
THE CASH PROBLEMS

The specific ways shoring & shielding contractors lose cash, pulled straight from what makes this trade different.

Daily Rental Rate Recovery

Every trench box and shoring system carries a daily cost, rented or owned. When the schedule slips, that daily cost keeps running whether the billing does or not.

Engineer of Record Cost Allocation

Engineered shoring means engineering invoices, and they belong to specific jobs. Left in overhead, they inflate every bid and hide the true cost of the complex ones.

Extended Duration Billing

A job planned for 30 days that runs 60 doubles your equipment cost. Duration language plus a change order standard keeps the second month from coming out of your pocket.

THE FIX

The CONTROL chapters that solve this for shoring & shielding contractors specifically.

CHAPTER 2
Equipment Cost Basis
A daily cost basis for every box, brace, and system.
CHAPTER 6
Project Management Standards
Duration clauses and change orders for schedule slips.
CHAPTER 1
Job Cost Structure
Cost codes that give engineering a job to live on.
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SYSTEM HUB
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All 8 steps of the CONTROL system.
QUESTIONS SHORING & SHIELDING CONTRACTORS ASK
Why do shoring contractors lose money when jobs run long?
Shoring contractors lose money on extended durations because the equipment cost is a daily number and the contract price often is not. A 30-day rental plan that stretches to 60 days doubles the equipment cost while revenue stays flat. Duration language and a change order the week the schedule slips are the only fix.
How should a shoring contractor allocate engineering costs?
A shoring contractor should cost engineer of record fees directly to the job that required them, with its own cost code. Chapter 1 of CONTROL builds that structure, so the complex engineered jobs show their true cost and the simple ones stop subsidizing them in the overhead rate.
What profit margin should a shoring and shielding contractor target?
A shoring and shielding contractor should target 22 to 30% gross profit per project and 12% net profit after all expenses, with overhead between 9 and 13%. The trades that hit it are the ones whose daily equipment cost appears on a report every week, not once a year at tax time.
Josh Luebker, President, SPM The Construction CFO
JOSH LUEBKER
PRESIDENT · SPM THE CONSTRUCTION CFO

Josh Luebker is a former commercial construction project manager and master electrician. He has managed 150+ projects totaling $2.1B+, including Google data centers, military bases, hospitals, and high-rises. CONTROL is built on what works in the field.

Josh leads SPM The Construction CFO (Sulphur Prairie Management, LLC), the fractional CFO for commercial subcontractors.

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