There is a version of this article where we give you a range. Where we say “commercial roof coatings cost between fifty cents and fifteen dollars per square foot” and then list eighteen variables and wish you luck sorting through them.

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That version is useless. We deleted it.

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You are not searching the internet at 9:40 PM because you want a range. You want real numbers. You want to know what this is going to cost so you can make a decision, move forward, and stop thinking about the roof that has been on your mind since last Fall.

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So here are the numbers. And then we will explain what each one means.

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Four Service Levels. Four Different Conversations.

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Not every roof needs the same thing. Not every building owner is in the same situation. Some roofs need focused attention on the weak spots. Some roofs need a complete seamless system from edge to edge. Some roofs need new insulation underneath. The worst thing a roofer can do is sell you a service level you do not need, or worse, sell you less than what the roof actually requires.

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Here is how we think about it, and how you should think about it too.

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Level One: Patching — The Cheapest. Everybody Wins If We Can Patch.

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Average ticket: $20,000

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Patching means we are reinforcing the areas of concern on your roof. The pipes. The perimeter edges. The seams. The spots where water has been finding its way in or where the existing membrane is showing its age. We are not touching the entire roof. We are targeting the weak spots with Conklin chemistry and reinforced fabric, sealing them properly, and extending the functional life of what is already there.

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$20,000 is the average patch project in Lake County and Porter County. Your building will have some variance, every building is unique, every roof has its own story, but $20,000 is a realistic, useful planning number for a focused reinforcement job on an average size commercial flat roof in this market.

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Patching is not a total roof job. It does not create the seamless edge-to-edge surface. It does not carry the same warranty as a full system. What it does is buy you time. It prolongs the inevitable. And if your roof is in decent overall condition with a few specific areas of concern, it is the smartest first move you can make.

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Think of it this way: if your roof has a cold, patching is the medicine. If your roof has pneumonia, you need a different conversation.

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Meg already knows where the trouble spots are. She has been watching them. She told Bill. Bill said “keep an eye on it.” Patching is the step between “keep an eye on it” and “this is now a capital expenditure.”

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Level Two: Total Coat — The Seamless Liquid Bathtub

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$6.75 per square foot for acrylic. $8.50 per square foot and up for urethane.

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This is a completely different world from patching.

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A total coat means we are covering your entire roof surface, edge to edge, with a seamless liquid Conklin system. Three layers minimum for acrylic. Reinforced polyester fabric embedded at every seam, every transition, every high concern area. When we are done, your roof looks like the inside of a white bathtub, one continuous surface with no joints, no laps, and no weak points.

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At $6.75 per square foot for acrylic: - A 3,000 sq ft roof is approximately $20,250 - A 5,000 sq ft roof is approximately $33,750 - A 10,000 sq ft roof is approximately $67,500 - A 15,000 sq ft roof is approximately $101,250

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Those are real numbers for a real market. Not a range from a national website. Not a guess. That is what it costs to do it right in Hammond, Portage, Hobart, Merrillville, Valparaiso, and the surrounding area.

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We are not talking about the bucket of elastomeric roof coat from Menards. We are not talking about the YouTube tutorial where a guy in flip-flops rolls a single coat of silver paint on a shed and calls it waterproofing. We are talking about professional-grade Conklin chemistry applied by a crew that knows the difference between a cosmetic coat and a structural system.

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Urethane starts at $8.50 per square foot. That is the floor, not the average. Urethane is the stronger cousin, harder chemistry, longer life, better resistance to ponding water and foot traffic and the chemical burden that settles on an industrial rooftop in this region. Nobody in this market is installing urethane properly for less than $8.50. Anyone quoting you five dollars a foot is cutting something that should not be cut.

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Conklin liquid systems carry warranties of up to 20 years on applicable substrates. That warranty runs from the manufacturer, not from a handshake.

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Nance in your finance department can annualize those numbers and she will see exactly why a total coat at $6.75 per square foot is a fraction of what replacement costs, and she will like what the math does over a 20-year warranty window.

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Level Three: Overlay — Insulation Plus a New Roof Surface

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This is the premium path. When a building needs more than coating but does not need a tear-off, an overlay system adds new insulation boards on top of the existing roof, then a new surface goes over that.

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Two options for the surface, and they are completely different systems:

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Membrane — specifically FLEXION 2.0 vinyl. This is a solid sheet that rolls out, gets mechanically fastened or adhered, and the seams are heat-welded together. Vinyl is fire-rated. Vinyl is impervious to grease. FLEXION 2.0 carries a 25-year, 300-month warranty. Membrane and liquid are not the same thing. Do not let anyone blend those numbers or those warranties together.

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Liquid — a Conklin liquid system applied over the new insulation, with mesh reinforcement to achieve the hail rating the building requires. Same chemistry as a total coat, but now it is going over fresh insulation instead of the existing roof surface.

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The insulation layer is what makes overlay a separate conversation from coating. Adding insulation means increasing R-value, improving energy efficiency, and reducing the load on your HVAC system. NIPSCO rates are going up. You feel it on every bill. Realistic energy savings from an overlay with proper insulation are 25% to 40%, depending on your current insulation condition and the thickness we add.

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But the insulation calculation is a spreadsheet, not a paragraph. It depends on your existing R-value, your energy goals, your building envelope, and what NIPSCO is going to charge you next Winter. We run that building by building. When you are ready for that conversation, we will bring the spreadsheet. Today we are keeping this simple.

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✉️ You already know which building you are thinking about. The one that came up in a conversation last quarter.

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Subject Property Address: ___________________________

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We will send you a free evaluation. No pitch. No pressure. Just real numbers from someone who actually gets on roofs.

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[ Email address ] → [ Send Me the Real Stuff ]

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What You Save by Not Tearing Off

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When tear-off is necessary, saturated insulation, structural damage, more than one existing roof layer already in place, we charge $1.00 per square foot for standard thickness removal labor. Dumpsters are billed separately because the count depends on how much material is coming off.

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On a 10,000 square foot roof, that is $10,000 in labor alone, plus dumpster costs, before a single dollar of new material goes down. That money does not improve your roof. It just removes the old one.

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The entire premise of coating and overlay is that tear-off is usually not required. If your insulation is dry and your deck is sound, we go right over the top. Every dollar you do not spend on tear-off goes directly toward the actual roof system, the coating, the insulation, the membrane, the parts that protect your building for the next two decades.

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Kenny in your facilities department can confirm whether the roof has been layered before. If he is not sure, that is one of the first things we check during the evaluation. It takes about ten minutes and it changes the entire conversation.

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This is why early intervention matters. The longer you wait, the more likely your insulation gets saturated. Once that happens, tear-off stops being optional and starts being mandatory. And that $10,000 you could have saved goes into a dumpster. Literally.

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Why Myron Golden Is Right About Your Roof

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Myron Golden said something that applies to every business, including ours:

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“Find a big pool of people with a problem that’s painful. Obsess over solving it, so that you can solve it in the most elegant way. Let them know you’ve created the solution. Remove the risk from them participating in that solution. It’s virtually impossible for you not to become wealthy.”

— Myron Golden

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Here is how that applies to the roof over your head right now.

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The big pool of people: commercial building owners across Lake County and Porter County whose flat roofs are aging, leaking, or approaching the end of their functional life. Restaurants. Warehouses. Churches. Strip malls. Industrial buildings. You.

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The painful problem: you know the roof needs attention. You have known for a while. But the numbers you have been quoted in the past were either too vague to be useful or too high to be realistic. So you did nothing. And the problem got worse. And the next number will be higher than the last one.

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The elegant solution: four service levels that match what your building actually needs. A $20,000 patch that buys you time. A $6.75 per square foot total coat that gives you a seamless 20-year surface. An overlay that adds insulation and a fire-rated membrane. Real options with real numbers.

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The risk removal: we do not give people ranges. We give them specific numbers. A real evaluation of your specific building. A proposal with clear pricing. And a warranty backed by Conklin, not by a handshake.

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We are not asking you to trust us. We are asking you to look at the math.

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What the Commercial Owners Are Actually Asking

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How much does it cost to patch a commercial flat roof? The average patch project in Lake County and Porter County is $20,000. Patching means reinforcing areas of concern — pipes, perimeter, seams — not coating the entire roof. Every building is unique, but $20,000 is a realistic planning number.

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How much does a total roof coating cost per square foot in Northwest Indiana? Acrylic coating runs $6.75 per square foot. Urethane starts at $8.50 per square foot. These are installed prices for professional-grade Conklin systems with three-layer application and reinforcement, not DIY bucket pricing.
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What is the difference between patching and a total coat? Patching targets specific weak spots and prolongs the life of the existing roof. A total coat covers the entire roof edge to edge in seamless liquid, the white bathtub, and carries a full Conklin warranty of up to 20 years. They are completely different scopes and completely different investments.

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What is an overlay system? An overlay adds new insulation boards plus a new roof surface, either FLEXION 2.0 vinyl membrane (a solid sheet, heat-welded, fire-rated, 25-year warranty) or a Conklin liquid system with mesh reinforcement. Membrane and liquid are completely different systems with completely different warranties.

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Do I need to tear off my old roof? In most cases, no. Tear-off is only necessary when insulation is saturated or structural damage exists. When required, labor runs $1.00 per square foot and dumpsters are billed separately. Every dollar saved on tear-off goes directly toward the new roof system.

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Will adding insulation reduce my NIPSCO bill? Realistically, 25% to 40% energy savings when we increase the thickness, dryness, and security of your insulation and cover. That is a building-by-building calculation, ask us for the spreadsheet.

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How long does a Conklin roof coating last? Conklin liquid systems carry warranties of up to 20 years on applicable substrates. FLEXION vinyl membrane carries a separate 300-month (25-year) warranty. These are completely separate products, do not let anyone blend those numbers together.

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Is acrylic or urethane better for a flat commercial roof? Both are Conklin systems. Acrylic at $6.75 per square foot is the most common starting point. Urethane at $8.50 and up offers stronger chemistry and longer life. The right system depends on your building, your budget, and how long you plan to hold the property.

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The Short Version, for Bill

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You are busy. Here it is.

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Four levels. Patching is $20,000 on average, focused reinforcement on your weak spots that buys you time. A total coat is $6.75 per square foot for acrylic or $8.50 and up for urethane, edge to edge, seamless, warrantied by Conklin for up to 20 years. Overlay adds insulation and either a FLEXION vinyl membrane (25-year warranty) or liquid system, and yes, those are completely different things. Tear-off is usually not required. When it is, it runs $1.00 per square foot for labor plus dumpsters.

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The most expensive decision is no decision. Deferred maintenance costs $4 to $8 in downstream damage for every $1 left unaddressed.

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Superior menu options exist.

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Book a Look. No Obligation. See Your Options.

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You already know which property you are thinking about. The one Meg mentioned. The one where Kenny got on the roof last Summer and came back down with a look on his face. The one where you said “we will keep an eye on it” and everyone nodded and nobody wrote it down.

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That roof is not getting younger. And the number is not getting smaller.

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📧 Stop wondering. Start knowing. Drop the address and we will tell you exactly where you stand.

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Subject property address: ___________________________

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[ Email address ] → [ Yes, Send Me the Real Numbers ]

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No pitch. No pressure. No plastic.

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