Job costing software for roofing contractors: where the waste and the weather days go

Where roofing job costs actually go sideways

• Material waste and overage — shingles, underlayment, and flashing are bought by the square with a waste factor built in, but actual waste on a cut-up roof or a bad tear-off can run well past what was estimated, and it's rarely tracked back to the specific job.
• Weather-day scheduling risk — a rained-out day still costs mobilization and sometimes tarping labor even though no roofing gets done, and that cost is easy to lose in "general overhead" instead of the job it delayed.
• Insurance-claim jobs vs. cash jobs — a claim job runs on an adjuster's approval timeline with its own cost pressures; a cash job runs on the homeowner's decisions. Costing them the same way hides which type is actually more profitable for your crew mix.
• Steep and complex roof labor premiums — a steep-slope or multi-plane roof takes meaningfully more labor hours per square than a simple roof, and if labor isn't tracked per job, that premium gets averaged away across easier work.

What to check before buying

Steep roofs and waste: the numbers that hide inside the average

A season's average cost-per-square tells you almost nothing useful, because it blends a simple ranch roof with a steep, multi-plane custom home. Tracking labor and material by individual job is what surfaces the real pattern — that steep-slope work costs meaningfully more per square, or that one particular crew's tear-offs are generating more waste than the estimate assumes. Without job-level numbers, those patterns just look like noise.

Weather days, and who pays for them

Roofing is priced on a job and delivered against a calendar, and the calendar belongs to the weather. A crew stood down at nine because the wind got up has still cost most of a day if they were paid to turn up, and that cost belongs to the job that could not be worked rather than a general overhead where it disappears.

Contractors who track this properly find the loss is not evenly spread. Certain jobs, certain months and certain crews absorb most of it. That is a pricing input, and it is only visible if a stood down day is logged against a job instead of written off.

Tear off is where the estimate meets the building

Almost every roofing overrun starts under the old covering. Rotten decking, a second layer nobody knew about, flashing that has to be remade. The work is real, the customer usually accepts a variation, and the variation is often agreed verbally on the roof and priced from memory afterwards.

The gap between agreeing extra work and pricing it is where roofing margin goes. A note and a photograph taken on the day, attached to the job, turns that conversation into something you can invoice with confidence six weeks later. Without it you are negotiating from memory against a customer who remembers it differently.

Where SiteLedger fits

SiteLedger gives roofing contractors geofenced clock-in and clock-out tied to the job site — including weather-delay days on the crew's timesheet — and AI receipt scanning that reads a supply house delivery ticket or receipt in about 4 seconds, working fully offline so a crew on the roof with no signal can still log it, syncing once they're back in range. Live per-job margin means a material overage or a labor-heavy steep roof shows up while the job is still open.

Starter is $8/month for up to 10 workers; Professional is $15/month for unlimited workers, with AI budget alerts and calendar scheduling for managing weather-dependent crew days. Both start with a 1-week free trial, no card required. QuickBooks Online syncs directly; Xero and other payroll providers use a payroll-ready CSV export.

Common questions

How do I track material waste against the original takeoff?

By logging every material purchase, including second and third deliveries, against the specific job as it happens. Comparing total material bought to the original takeoff at close-out — not just at the start — is what shows you real waste versus estimated waste.

Does a rained-out day count as a job cost?

If the crew mobilized, tarped a roof, or lost a scheduled day, that's real labor and scheduling cost attributable to that job, even with no squares installed. Logging the day against the job — rather than letting it disappear — is what keeps weather from silently eating margin across the season.

Should insurance-claim jobs be job-costed differently than cash jobs?

They should be tracked as separate job types with their own budgets, since claim jobs run on an adjuster's timeline and approval process that adds its own cost pressures. Blending the two into one average hides which type is actually more profitable for your crew mix.

How much more should a steep or cut-up roof cost in labor?

That number is specific to your crew and your market, which is exactly why it needs to come from your own job-level labor data rather than a rule of thumb — tracking hours per job by roof type is what lets you price steep work accurately instead of guessing.