Quick Answer: A re-roof commits a large material bill — shingles, underlayment, flashing, or commercial membrane — before the job is installed and invoiced. Suppliers expect payment on delivery or within 30 days, but the homeowner or insurer often pays on completion. A business line of credit bridges that window across suppliers and covers labor too; supplier terms handle smaller orders. Get matched to compare options.
Why Roofing Is So Material-Heavy
Few trades commit as much cash to materials per job as roofing. On a typical re-roof, materials — shingles or membrane, underlayment, drip edge, flashing, fasteners, and disposal — commonly run somewhere between 35% and 50% of the contract value. For a commercial TPO or EPDM job, a single material order can reach five or six figures before a crew sets foot on the roof. That money goes out the door first: the supplier delivers a staged load of material and expects payment on delivery or on a 30-day account, while the customer typically pays a deposit and then the balance on completion.
The result is a structural cash gap baked into every job. You are essentially financing the homeowner's or building owner's materials for the days or weeks between buying them and collecting the final check. Run two or three jobs at once and those material commitments stack, which is exactly when a growing roofer feels the squeeze — not because the work is unprofitable, but because the cash leaves before it returns.
Supplier Terms: The First Lever (and Its Limits)
Most roofers start with supplier credit accounts at their distributor, and they should — net-30 terms are convenient and often effectively interest-free if you pay on time. But supplier accounts have real limits. The credit line is usually capped at a level that covers a job or two, not your full pipeline during storm season. The clock is short: net-30 can expire before an insurance job or a slow-paying retail customer actually funds. And the account only buys materials — it does nothing for payroll, which is due weekly regardless. Leaning entirely on supplier terms is how a busy roofer ends up juggling vendor balances and rationing which jobs to start.
A Line of Credit for the Full Job Cycle
A business line of credit is the workhorse for roofing material cash flow because it is flexible in three ways supplier terms are not. It works across every supplier, not just one. It covers labor and overhead alongside materials, so the whole job is funded, not half of it. And you draw only what you need and repay as each job closes, then the capacity is available again for the next one. For a roofer running multiple crews through a busy stretch, that revolving capacity is what lets you say yes to the next job without waiting for the last check to clear.
For a single oversized order — say a large commercial membrane job or a multi-home community — a working capital loan or dedicated material/inventory financing can fund that specific purchase with a defined repayment plan, keeping your revolving line free for everyday operations.
Match the Tool to Who Pays You
Roofing has two very different payment worlds, and the right financing depends on which one a job lives in. Retail jobs (homeowner pays directly, sometimes with consumer financing) usually pay reasonably close to completion, so a line of credit comfortably bridges the short gap. Insurance restoration jobs pay in stages and can stretch for weeks while the carrier releases funds — that timing is its own challenge covered in roofing insurance-claim payment delays. Commercial jobs often carry net-30/60 terms and may involve a GC, where invoice factoring can turn the receivable into cash sooner. Knowing which bucket a job falls into tells you how long your material money is tied up — and therefore how much capacity you need.
How Much Material Capacity to Carry
Size your financing to the materials and labor in flight at your busiest realistic moment, not your average week. If a typical re-roof carries $9,000–$14,000 in materials and you want to run three to four simultaneously during storm season, you may have $40,000–$60,000 committed to materials alone before a single final check lands — plus payroll on top. A line sized to that peak lets you load up when the work is there. A line sized to your slow month forces you to turn away jobs at exactly the wrong time.
What Lenders Look For
Lines of credit and working capital programs are widely available to established roofers. Underwriters generally want at least six months in business (often more for a line), consistent deposits, roughly $10,000+ in monthly revenue, and personal credit around 550+ for many short-term options — 650–680+ for bank and SBA pricing. Because roofing revenue can be lumpy and seasonal, clean business banking and a clear picture of your job pipeline help underwriters see the pattern. If credit is rebuilding, see business loans for bad credit.
A Worked Material-Cash Example
Walk a single job through the calendar. Say you sign a $24,000 re-roof. Materials run about $10,000, delivered to the site and due to your supplier on a net-30 account. The homeowner pays a $4,000 deposit at signing and the $20,000 balance on completion, which lands roughly three weeks out. So in week one you’ve committed $10,000 in materials and started paying a crew, while only $4,000 has come in. For one job, that gap is uncomfortable but survivable.
Now run the business the way a busy season actually works: three of those jobs overlapping. Suddenly you have around $30,000 in material commitments plus three crews’ worth of payroll out the door, against a trickle of deposits — and your supplier’s net-30 clock is ticking on all of it. This is precisely where a roofer either slows down (starting jobs one at a time to stay within cash) or draws on a line of credit to run all three and repay as each completion check arrives. A $40,000–$50,000 line comfortably covers that three-job material-and-labor exposure; you draw as you buy, repay as you collect, and the capacity resets for the next wave. The figures are illustrative, not a quote, but they show why material-heavy trades need credit sized to concurrent jobs, not a single one.
The same example explains why supplier terms alone fall short: a distributor account might cover the $10,000 for one job, but it won’t stretch across three simultaneous jobs plus the payroll the account can’t touch. The line fills both gaps at once.
Used well, the two work together rather than competing. Keep paying your distributor account on time to preserve those interest-free 30-day windows and your standing with the supplier, and reserve the line of credit for the labor and for the jobs that stack beyond what the account covers. That combination keeps your borrowing cost low while still giving you the capacity to run a full board of work. The roofers who get squeezed are usually the ones relying on a single lever — maxed supplier terms with nothing left for payroll, or a line they draw on for everything including purchases a net-30 account could have carried free. Matching each cost to the cheapest source that fits it is what keeps margins intact through a busy season.
Bottom Line
Roofing forces you to buy the customer's materials before they pay you, and that gap scales with every crew you add. Use supplier terms for small orders, a line of credit as the flexible workhorse across suppliers and labor, and a working capital or material facility for outsized single jobs — and size your capacity to peak season, not the average. Start at the roofing business financing hub, then get matched to compare options.