WATERPROOFING NET PROFIT BENCHMARKS
Waterproofing subcontractors at $1M–$5M typically net 5–7% after overhead. At $5M–$10M, the target improves to 7–9% as overhead spreads over more revenue. Above $10M, well-run waterproofing firms can sustain 9–11% net. Below 5% consistently means cure-time labor leakage, weather-day overhead exposure, missing SF unit cost tracking by membrane type, or retention exposure on long-cycle building work that nobody’s forecasting.
Net profit is what’s left after overhead. For waterproofing, the overhead structure has more drag than most subs realize. Hitting benchmark requires fixing the structural issues, not just bidding higher.
WATERPROOFING NET PROFIT BENCHMARKS — WHERE YOU SHOULD BE.
Net Profit Margin Formula: Net Profit ÷ Total Revenue × 100. Measures what’s left after every cost — project costs, overhead, taxes, owner compensation — against revenue. Different from gross margin, which only accounts for direct project costs.
| METRIC | INDUSTRY LOW | SPM TARGET | STRONG | NOTES |
|---|---|---|---|---|
| Net Profit Margin | 3-5% | 6-9% | 10%+ | Cure time and retention tail are primary drags |
| Gross Margin | 17-22% | 24-30% | 32%+ | SF unit cost discipline by membrane type matters most |
| Overhead Rate | 18-22% | 12-16% | 10-12% | Weather day exposure shifts this 2-3 points |
| Days Sales Outstanding | 75+ days | 55-65 days | 45 days | Retention on building envelope work extends this |
| Working Capital Ratio | Under 1.3x | 1.5-1.7x | 2.0x+ | Bonding capacity floor sits at 1.5x |
NET PROFIT BANDS BY REVENUE
| REVENUE BAND | INDUSTRY LOW | SPM TARGET | STRONG | NOTES |
|---|---|---|---|---|
| $1M – $3M | 2–4% | 5–7% | 8%+ | Owner usually wears multiple hats |
| $3M – $5M | 3–5% | 6–8% | 9%+ | Overhead structure starts mattering |
| $5M – $8M | 4–6% | 7–9% | 10%+ | Estimating discipline drives the spread |
| $8M – $12M | 5–7% | 8–10% | 11%+ | Crew utilization + bid mix discipline |
| $12M+ | 6–8% | 9–11% | 12%+ | Quoted individually — mix matters most |
Context: These ranges assume owner pays themselves a market salary through overhead — typically $120K–$180K at $3M–$8M revenue. If owner compensation is being drawn from profit instead of overhead, the net margin number is inflated and not comparable to benchmark.
THE STRUCTURAL DRIVERS
MEMBRANE MIX, CURE PATTERNS, RETENTION EXPOSURE
Waterproofing margins span 3 to 12 points across subs of identical size doing identical-looking work. The drivers: membrane mix (hot-applied vs sheet vs liquid-applied have different production rates and waste factors), cure-time scheduling (sub does 30–40% non-billable crew time without stacking jobs), weather exposure (regional weather days can add 4–6 weeks per year of overhead burn), and retention tail length (some scopes hold money for 6+ months after substantial completion). These aren’t market conditions — they’re structural choices about how the business runs.
WHAT THE TOP 10% DOES DIFFERENTLY
SF UNIT COST RATE LIBRARY + CREW STACKING
Subs running 9%+ net at $5M–$8M almost always have two things: a real SF unit cost rate library by membrane type (so bids are built on data, not gut), and crew stacking across 2–3 active jobs (so cure time becomes billable time on a different building). The combination compresses non-billable crew hours from 35% down to 12–15% and gets bid accuracy under 4% variance. Same business, same crews, same market — different operating discipline.
WHAT’S USUALLY BREAKING
UNTRACKED CURE TIME, STALE OVERHEAD, NO SF COSTING
Sub at 3–4% net with $4M in revenue almost always shows the same pattern: bid overhead at 8–10% but running 22–28%, no SF unit cost tracking by membrane (so detail-heavy decks bid the same as flat field areas), and crews working single buildings sequentially (cure time eaten as overhead). The combination compounds: bids underprice, jobs hit margin lower than estimated, and the margin shortfall hits net profit dollar-for-dollar. See the SF unit cost fix.
HOW TO MOVE THE NUMBER
BUILD THE SF UNIT COST RATE LIBRARY
Track cost per SF by membrane type by job. After 4–6 closed jobs the library is dense enough to bid from. The estimator stops guessing. Bid-to-actual variance compresses from 12%+ down to under 5%. That spread shows up in net margin within two quarters.
STACK CREWS ACROSS BUILDINGS
Cure time is the most under-managed cost in waterproofing. Crews working a single building sequentially run 30–40% non-billable. Crews rotating across 2–3 active jobs run 12–15% non-billable. That delta is 2–4 points of net margin without any change to bidding or pricing.
TRUE UP THE OVERHEAD RATE
Most waterproofing subs bid at the overhead they wish they ran, not what they actually spend. Pull the trailing 12 months of overhead, divide by revenue, and bid that number going forward. Plus weather-day adjustment for your region. Plus margin for retention-locked working capital.
MANAGE THE RETENTION TAIL
Retention on long-cycle building work locks 8–15% of trailing revenue for 4–8 months after scope completion. If that money isn’t being forecast, decisions get made against capacity that isn’t actually there — bidding more work, hiring crew, buying equipment — and the cash gap compresses net margin. See the cash flow playbook.
WATERPROOFING ENGAGEMENTS BY REVENUE BAND
| TTM REVENUE | CORE FINANCIAL | EXECUTIVE FINANCIAL |
|---|---|---|
| Under $1M | $1,900/mo | $2,900/mo |
| $1M – $3M | $2,600/mo | $3,600/mo |
| $4M – $6M | $3,800/mo | $5,500/mo |
| $7M – $9M | $5,100/mo | $6,900/mo |
| $10M – $12M | $6,100/mo | $8,500/mo |
| $13M+ | Quoted | Quoted |
$13M+ is always quoted individually based on complexity and scope. ControlQore purchased separately (outside an SPM engagement) is $150/month per $1M of revenue. Onboarding migration is included — books migrated back to start of last taxable year, fully onboarded in 60 days.
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