Why do some roof coating projects lose money before the crew even reaches the roof?
Join industry expert and CEO of Cotney Consulting Group, John Kenney, in this article!
The project is complete; the labor report is over budget, and material usage is higher than expected. The first reaction is often to blame the field.
Management may question why the crew moved too slowly, why preparation took longer than planned, or why additional material was needed. The foreman may be asked to explain a project that never had a realistic chance of meeting the original estimate.
Sometimes the field is responsible. More often, the crew is exposing problems that began much earlier.
The roof may not have been fully investigated. Preparation may have been treated as incidental work. Production rates may have been based on ideal conditions instead of actual job conditions. Details may have been buried inside a broad square-foot price. The estimator’s assumptions may never have been communicated to the project manager or foreman.
A roof coating project can begin losing money weeks before the first crew member steps onto the roof.
The field is where the loss becomes visible.
The Estimate Must Reflect the Actual Roof
Roof coating work is sometimes estimated as though every square foot will require the same amount of effort. That assumption can be costly.
The open field may allow strong production, but the entire project cannot be priced using open-field production. Perimeters, penetrations, drains, curbs, seams, flashings, pitch pockets, previous repairs and vertical surfaces all require additional time and attention.
Two roofs with the same total area may have completely different labor demands. One may have broad open areas with minimal equipment. Another may contain dozens of rooftop units, complicated transitions, congested mechanical areas, and hundreds of individual details.
A square-foot quantity tells the estimator how large the roof is. It does not tell the estimator how difficult the work will be.
The estimate must be based on the actual roof configuration, existing conditions, preparation requirements, and expected installation process. Otherwise, the contractor is pricing an imaginary version of the job rather than the project the crew will be expected to complete.
Preparation Is a Production Operation
One of the most common estimating mistakes is failing to assign enough labor to preparation.
Cleaning, removing loose material, addressing failed repairs, preparing seams, correcting deteriorated flashings, and treating damaged areas can consume a significant portion of the project schedule. On some roofs, preparation may require more time than the primary field application.
When this work is hidden inside a general square-foot rate, the estimate often assumes that the crew will begin coating almost immediately. The field team arrives and discovers that several days of cleaning, repair, and detailing are required before the roof is ready.
Those hours do not disappear because they were not estimated. They become a direct hit to the labor budget.
Preparation should be estimated as a separate production operation. The estimator should identify what must be cleaned, removed, repaired, reinforced, or corrected and assign labor to each activity.
This is where realistic crew-day planning becomes important. Instead of applying a broad percentage for preparation, the estimator should ask what a properly staffed crew can reasonably complete in one day under the actual job conditions.
That approach creates an estimate tied to execution rather than assumption.
The scope must also distinguish between known preparation and concealed conditions. Visible deterioration can often be identified during the roof inspection, but other problems may not become apparent until cleaning, probing, or localized removal begins.
That risk should be addressed through clear assumptions, allowances, or change-order procedures. The field team should not simply absorb it.
Detail Work Controls Production
Open-field application is usually the most visible part of a coating project, but it is not always where the labor is spent.
The estimator should separate field areas from detail areas whenever practical. Perimeters, curbs, penetrations, drains, scuppers, seams, and previous repairs should be quantified and evaluated independently.
A crew may move quickly across an open area and then spend hours working around equipment or reinforcing complicated transitions. If the estimate applies a single production rate across the entire roof, the project can fall behind even when the crew works efficiently.
Detail density matters.
A roof containing a high number of penetrations per thousand square feet will not produce like a mostly open roof. Neither will a roof with extensive previous patching, multiple wall conditions, or difficult drainage areas.
These conditions should be documented during the roof inspection and carried into the estimate. The proposal does not need to expose every internal labor calculation, but the contractor’s project plan must recognize where the hours will actually be consumed.
Access and Staging Affect Every Day
Estimators often focus on what must happen on the roof and underestimate what it takes to get labor, equipment, and material into position.
A roof with direct crane or forklift access is very different from one requiring material to be moved through an occupied building, carried up stairs, or raised through a limited access point. Long travel distances across a large roof also reduce production, especially when crews must repeatedly return to the staging area.
Building operations may create additional restrictions. Work may be limited to certain hours. Entrances may need to remain open. Noise, odor or material movement may need to be coordinated with tenants or production staff.
These conditions affect more than the first day of the job. They can reduce productive time every day.
Setup, breakdown, material movement, housekeeping and access control should all be included in the labor plan. A crew cannot produce eight full hours of installation work if logistics consumes a significant portion of the day.
The project schedule and estimate must reflect usable production time, not simply the number of hours the crew is present.
Material Coverage Must Match Job Conditions
Material quantities can create margin problems when estimates rely too heavily on ideal coverage assumptions.
Actual use may vary due to substrate profile, porosity, surface irregularities, detail work, reinforcement requirements, application thickness, and waste. Rough or highly textured surfaces may consume more material than smooth surfaces. Vertical work, seams, and penetrations may also require additional material that is difficult to capture through a simple field-area calculation.
The estimator should understand how the existing roof will affect application.
Material losses can occur through mixing, transfer, container residue, equipment cleanup and small quantities left at the end of a work period. Weather and working conditions may also influence application efficiency.
The answer is not to inflate every estimate without justification. The answer is to use realistic assumptions based on the substrate, system requirements, and contractor experience.
High-performance coating systems designed for challenging roof conditions still depend on proper preparation, appropriate thickness, suitable application conditions, and quality control. Product capability does not eliminate the need for disciplined estimating and execution.
Post-project material reports are especially valuable. If similar roofs consistently use more material than estimated, the problem should be corrected in the estimating database rather than repeated on the next project.
Weather Changes Productive Time
Weather affects coating work in more ways than creating a possible rain delay.
Temperature, humidity, wind, dew, and surface moisture can reduce the number of productive hours available in a day. Morning moisture may delay the start, afternoon storms may shorten the work window, and wind may complicate application or material handling.
The contractor cannot predict every weather event, but the estimate and schedule should reflect the season, location, and typical working conditions.
The important question is not only how many days the project may take. It is the number of usable production hours likely to exist over those days.
The Estimate Is the First Project Plan
A weak estimator-to-operations handoff is one of the fastest ways to lose control of a coating project.
The estimator may understand the difficult areas, labor assumptions, access restrictions, and repair quantities, but that knowledge often remains in notes or memory. Operations receives the signed proposal, the total labor budget, and the material order, but not the thinking behind them.
That forces the project manager to rebuild the job after award.
The estimate should serve as the first project plan. It should explain how the work is expected to be performed, where the risk exists, and what assumptions support the labor and material budget.
The project manager and foreman should know which areas carry the greatest risk, what preparation was included, what production rates were assumed, and what conditions may require additional authorization. They should also understand the customer’s expectations, building restrictions, and any commitments made during the sales process.
A complete handoff should include a review of the roof plan, photographs, scope, exclusions, labor budget, material quantities, access plan, schedule, and quality-control requirements.
This meeting allows operations to challenge assumptions before mobilization. It is far better to identify a missing detail or unrealistic production rate in the office than after work has begun.
The Field Needs a Daily Production Plan
Even a strong estimate can fail without field planning.
The foreman should understand the sequence of work, daily production goals, material requirements, and quality-control checkpoints. The crew should know what areas must be completed and how the work will progress across the roof.
Daily planning helps prevent the crew from spreading itself too thin across too many areas, leading to unfinished work or repeated movement of materials and equipment.
Production should be tracked against the estimate as the project progresses. Waiting until the job is complete to discover that labor is over budget does not provide an opportunity to correct the problem.
If preparation is taking longer than expected, management needs to know early. If material use exceeds the plan, the contractor should determine whether coverage, substrate conditions, or application practices are responsible.
The purpose of daily tracking is not to pressure the crew into unsafe or careless production. It is to compare the plan with reality and make informed adjustments while options still exist.
Change Management Protects the Margin
Roof restoration work frequently uncovers conditions that could not be fully identified during the initial inspection.
The contractor should have a clear process for documenting additional deterioration, concealed moisture, unexpected repairs, or owner-requested work. Photographs, quantities, labor impact, and material requirements should be recorded promptly.
Field personnel should also understand their authority limits. They need to know which work can proceed immediately for safety or protection purposes, and which conditions must be escalated before additional work begins.
Crews should not perform significant out-of-scope work based on a casual conversation and assume the office will recover the cost later.
The customer should be informed when a discovered condition changes the original scope. The contractor should explain what was found, why the additional work is necessary, and how it will affect cost or schedule.
Clear change management protects both parties. The owner gains visibility into the condition, and the contractor avoids donating labor and material that were never included in the original price.
Every Project Should Improve the Next Estimate
The project is not finished from an operational standpoint when the final application is complete.
The contractor should compare estimated labor, actual labor, material use, preparation hours, detail work, access costs, change-order recovery, and final gross margin.
The goal is not to assign blame. The goal is to identify where the plan was accurate and where assumptions need to change.
Perhaps the estimator underestimated penetration labor. Material coverage may have been lower than expected on a rough substrate. The crew may have lost time because staging was too far from the work area. The project may also reveal production rates that can be improved on future estimates.
Those lessons should be documented and carried back into the estimating process.
Without a post-job review, the company may repeat the same mistake on the next roof. A strong estimating system is not built solely on manufacturer data and standard rates. It is built from the contractor’s actual project history.
Profitability Begins Before Mobilization
High-performance coating systems can create excellent opportunities for roof restoration, but the product alone cannot protect the contractor’s margin.
Profitability depends on accurate investigation, realistic estimating, clear scope, disciplined handoff, and active production control. The crew must receive a plan that reflects the roof it will actually encounter.
When a coating project loses money, the final overrun may appear as an overrun in field labor or material usage. The cause, however, may have begun weeks earlier when the roof was inspected, estimated, and sold.
The best contractors do not wait for the crew to discover whether the estimate was correct. They investigate the roof, plan the work, communicate the assumptions, and measure performance from the beginning.
The crew may be where the cost overrun becomes visible, but the estimate, handoff, and production plan are usually where the margin was either protected or lost.
Written by: John Kenney
About the Author:
John Kenney is the CEO of Cotney Consulting Group and a third-generation roofing professional with more than 45 years of industry experience. His background includes estimating, project management, field operations, and executive leadership, and he works with roofing contractors to improve profitability, operational performance, and long-term growth.
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