Ten Guys Can't Beat A 24 Hour Cure
The GC compressed the schedule and wants more men on the floor, but the floor is set and waiting on grout. The restroom scope you bid as one trip has turned into four.
Every other trade recovers schedule with bodies. A framer doubles the crew and the wall goes up twice as fast; tile runs at the speed of chemistry whether one man or ten is standing on the slab. So tile is the trade that can't answer a compressed schedule with manpower, and it's also the trade whose scope gets fractured into separate trips by the sequence of everybody else's work.
The size of it
Three or four mobilizations on a $12K restroom scope wipe out the labor margin before the first tile gets set. When the GC compresses the schedule, you either run overtime you never priced or you take the delay backcharge.
Thinset needs 24-48 hours before grout, grout needs 24-72 hours before traffic, and a shower waterproofing assembly needs a 24-48 hour flood test that has to pass before anything covers it, all of it with 50 degrees held through cure. Putting a second crew on a floor that's already set moves none of those clocks. The scope also comes in pieces: restroom floors and wainscot before partitions and accessories, base at the toilet partitions on a second trip, the lobby whenever the GC releases it, and punch as a fourth. Every one of those trips is a truck, a mixer, a saw setup, water, and half a day of travel nobody paid for.
Three moves, in order
Step 04: Estimating system
The estimate maps one to one onto the job cost codes, so variance means something the day it appears.
What else costs tile and stone contractors money
The same mechanism in other trades
What tile and stone owners ask
How do i charge a gc for extra mobilizations on a tile job?
The GC compressed the schedule and wants more men on the floor, but the floor is set and waiting on grout. The restroom scope you bid as one trip has turned into four.
What does it cost?
Three or four mobilizations on a $12K restroom scope wipe out the labor margin before the first tile gets set. When the GC compresses the schedule, you either run overtime you never priced or you take the delay backcharge.
What do I do first?
Count the real trips on your last five jobs off truck tickets and crew hours, then set that against the number of mobilizations you carried in the estimate.
What are tile and stone contractors supposed to be making?
Tile and stone runs 22% gross margin, 14% overhead and 8% net profit before taxes at $1M–$5M. The all-trade average is 7%, so this trade sits 1 points above it. The CFOS target is 10%.
Which part of the system fixes it?
The step is number 04, estimating system. The estimate maps one to one onto the job cost codes, so variance means something the day it appears. It comes from chapter 4 of CONTROL: The Construction Financial Operating System.
Josh Luebker ran commercial construction projects before he ran the numbers behind them, on data centres, military bases, hospitals, and high-rises. He wrote CONTROL: The Construction Financial Operating System, which is an eight-step framework for commercial subcontractors, and it publishes on October 1, 2026. He is a master electrician who moved into the office and kept the field vocabulary.
Sulphur Prairie Operations LLC maintains the benchmark reference behind these figures. Every edition is reconciled against the newest CFMA survey release before it publishes here. Where a figure changes between editions, the older edition keeps its year in the title so a citation to it stays correct.