WATERPROOFING CONTRACTOR NET PROFIT MARGIN.
Waterproofing contractors doing $1M to $5M in revenue run 7.5% to 8.5% net profit, climbing to 11.5% to 13.5% by $50M and up, tied with SWPPP for the strongest net margin band tracked. The trade carries the highest overhead rate of the trades on this page, driven by long warranty periods and specialized labor, but gross margins are high enough that net profit still leads the field.
Waterproofing runs on a warranty-driven business model. A 10 to 20 year warranty on a below-grade or plaza deck installation means a single envelope failure years after the job closes can turn a profitable project into a loss. Specialized labor and certification requirements limit competition and support strong gross margins, but contractors who do not reserve for warranty risk are financing future callbacks out of current profit without knowing it.
Net Profit Margin Formula: Net Profit ÷ Total Revenue × 100. Unlike gross margin, this measures what survives after overhead and G&A · the number that actually funds owner draw, debt paydown, and growth.
WATERPROOFING NET PROFIT BENCHMARKS · WHERE YOU SHOULD BE.
| METRIC | INDUSTRY LOW | SPM TARGET | STRONG | NOTES |
|---|---|---|---|---|
| Net Profit Margin ($1M–$5M) | 7.5% | 12% | 13.5% | Tied for the highest net margin band in the 48-trade set, alongside SWPPP |
| Gross Margin ($1M–$5M) | 26% | 22-30% | 34% | See gross margin page for full detail |
| Overhead Rate | 17% | 9-13% | 10% | Highest overhead percentage of the four trades here, driven by warranty reserve and specialized labor |
| Days Sales Outstanding | 60 | 35 | 20 | SPM standard DSO target across trades, not yet trade-segmented |
| Working Capital Ratio | 1.0 | 1.5 | 2.0+ | SPM standard working capital target across trades, not yet trade-segmented |
WHAT MOVES NET PROFIT.
Warranty Liability Is a Deferred Cost, Not a Marketing Line
Long warranty periods on waterproofing systems mean the real cost of a job is not known until years after it closes. Contractors who reserve a percentage of every contract for warranty risk price the trade correctly. Contractors who treat the warranty as a sales feature with no financial backing are quietly underpricing every job.
Specialized Labor Limits Competition and Supports Margin
Above-benchmark waterproofing contractors invest in manufacturer certification and applicator training, which limits who can compete for the work and supports the highest gross margins in this comparison set. That pricing power is what keeps net profit strong even against the trade’s elevated overhead rate.
Check the Warranty Reserve First
If you are below benchmark, check whether warranty risk is reserved for in the estimate at all, or whether it is simply hoped away. The second thing to check is overhead: this trade runs the highest overhead rate of the four on this page, so a small overhead miscalculation shows up faster in net profit than it would in a lower-overhead trade.
FLAT MONTHLY FEE. NO SURPRISES.
Priced by trailing 12-month revenue. No hourly billing. No payroll. No add-ons.
| Revenue | Monthly Fee |
|---|---|
| Under $1M | $1,900–$2,900/mo |
| $1M–$3M | $2,600–$3,900/mo |
| $4M–$6M | $3,800–$5,700/mo |
| $7M–$9M | $5,100–$6,900/mo |
| $10M–$12M | $6,100–$8,500/mo |
| $13M+ | Quoted |
Range reflects three tiers: Core Financial (CFO advisory only, no bookkeeping), Executive Financial (adds controllership and full-service bookkeeping), and Strategic Financial (adds ControlQore setup and management at no extra charge). SPM does not handle payroll.
FREQUENTLY ASKED.
