DRYWALL CONTRACTOR FLOOR-BY-FLOOR JOB COSTING — FLOOR-BY-FLOOR JOB COSTING FOR DRYWALL CONTRACTORS.
Drywall production rate varies by ceiling height and board type. Standard wall board at 9-foot ceilings places faster than 5/8 type-X at 14-foot ceilings. A drywall contractor who tracks total project labor without separating by floor, ceiling height, and board type cannot identify which portions are consuming margin. Floor-by-floor cost codes make those variances visible while the project is still active.
The fix is cost codes by floor and board type. When each floor is its own cost center with separate codes for board type, the cost-to-complete catches a high-ceiling floor running above the estimated SF rate at 50% complete rather than at project closeout.
WHAT MAKES DRYWALL FINANCIAL CONTROL DIFFERENT — AND WHERE MARGIN GOES.
Ceiling Height Premium Not in Estimate
Drywall production rate drops 20–35% for ceilings above 10 feet due to lift equipment setup, reduced reach efficiency, and fatigue. A drywall estimate that uses the same SF rate for 9-foot and 14-foot ceilings is underpricing the high-ceiling areas. When floor plans have mixed ceiling heights — standard offices at 9 feet and lobby/atrium areas at 14–18 feet — the high-ceiling areas must be priced at a ceiling-height-premium rate. Track actual SF per hour by ceiling height range across completed projects to build documented premium rates.
MEP Conflict Rework Absorbed Without Change Order
Drywall is one of the last trades to finish, which means any MEP conflicts — conduit running through a stud bay, HVAC duct requiring a dropped ceiling, plumbing requiring a chase — require drywall modification. When the modification is caused by MEP drawings issued after the drywall bid, the additional labor is a change order. When a dedicated change order cost code exists from day one, every MEP-caused modification is tracked from the moment it occurs rather than reconstructed at closeout.
Board Type Substitution Mid-Project
Design changes that substitute a higher-specification board type after the project starts — standard to impact-resistant, standard to abuse-resistant, change in fire rating requiring additional type-X layers — are scope changes with cost implications. The additional material cost and the potentially different installation time are a change order. Document every board type change against the original specification. Submit the change order before ordering the new material.
THE SPECIFIC FINANCIAL CONTROLS FOR DRYWALL SUBCONTRACTORS.
The ceiling height database: A drywall contractor who tracks SF per hour by ceiling height range across 8–12 projects builds documented production rate differentials. 9-foot ceilings: baseline rate. 12-foot ceilings: 15% premium. 14–18-foot ceilings: 25–35% premium. These documented differentials support both future bid accuracy and change order claims when scope changes increase ceiling height requirements.
FREQUENTLY ASKED.
