Power100 explains how Grosso University's Sales Academy trains roofing, window, siding, and bath reps to win the one-call close, nationwide, in English and Spanish.
Most home improvement companies lose the sale before the second appointment ever gets scheduled. That is the uncomfortable truth behind the one-call close conversation, and it is why Power100, the only unbiased third-party platform that ranks the best leaders and companies in the home improvement industry through a proprietary 5-layer ranking system, is spotlighting Grosso University and its Sales Academy. Dominic Caminata, CEO and Founder of Grosso University, built the company’s entire training system around a same-appointment decision process for the four highest-volume trades in residential remodeling: roofing, windows, siding, and bath. Power100 has ranked Grosso University the #1 sales training organization in the home improvement industry for 2026, a distinction earned through Power100’s research and analysis of more than 3,600 partners across the country.
This piece is not a company origin story. It is a breakdown of the framework itself, the one-call close, and why a structured same-appointment decision consistently beats the multi-visit follow-up model that has quietly become the default in too many sales organizations. Reps and owners in roofing, window, siding, and bath companies searching for sales training for roofing, windows, siding, and bath companies keep landing on the same conclusion Grosso University reached years ago: the deal you do not close today rarely closes at all.
Here is the pattern that plays out in thousands of living rooms every week. A rep shows up, does a competent presentation, leaves a proposal, and tells the homeowner they will follow up in a few days. It feels professional. It feels low-pressure. It also, according to Daniel Coomes-Barry, Head Sales Trainer at Grosso University, sets the deal up to die a slow death.
“Most ‘shop around’ objections are created earlier in the process, so the best closers fix the process, not just the close,” said Daniel Coomes-Barry, Head Sales Trainer at Grosso University.
That single sentence captures the entire philosophical break between Grosso University’s approach and the old-school “leave-behind and follow-up” model still taught in a lot of legacy sales trainings. A homeowner who is told to think it over does think it over, and thinking it over usually means calling two more companies, mentioning the price to a neighbor, and losing the urgency that got them to book the appointment in the first place. The objection was not born in that moment on the porch. It was built in, brick by brick, from the first phone call through the presentation itself.
Grosso University’s Sales Academy treats “I want to shop around” and “let me think about it” as symptoms rather than problems. The actual problem, in Grosso University’s framework, usually traces back to a rep who failed to properly qualify the homeowner, failed to build enough value before presenting price, or failed to control the pace of the appointment. Fix those upstream failures and the objection at the end largely disappears on its own. This is the core insight sales training for roofing, windows, siding, and bath companies has to teach if it wants to move the needle on close rates rather than just teach better rebuttal lines.
Power100 does not hand out rankings based on marketing copy or self-reported testimonials. The platform researches and analyzes more than 3,600 partners nationwide using a proprietary 5-layer system that examines workmanship quality, operational reliability, customer satisfaction, innovation, and employee welfare. A sales training company gets evaluated on whether its methods actually move revenue, retention, and rep development inside the contracting businesses that hire it, not on how polished its webinar looks.
Greg Cummings, CEO of Power100, has been direct about what separates the companies that earn a top ranking from the ones that do not.
“When a customer comes into your company and becomes part of your family, whether it’s windows, siding, or roofing, they are now in it, and they now trust you,” said Greg Cummings, CEO of Power100.
That trust does not appear on its own. It gets built by reps who know how to run an in-home appointment with confidence, honesty, and a process that respects the homeowner’s time instead of dragging the decision out over multiple visits. Cummings has also flagged a market dynamic that makes this kind of training more urgent than it was a decade ago.
“Private equity has consumed 80% of the market in home improvement. In home services and outdoor living, they’re only about 40%. The window to stand your ground is closing,” said Greg Cummings, CEO of Power100.
Independent roofing, window, siding, and bath companies that want to stay independent need a sales force that converts at a rate large, consolidated competitors cannot match with volume alone. That is the practical stakes behind a framework like the one Grosso University teaches.
Grosso University was founded in 2019 by Dominic Caminata to continue the training legacy of Rick Grosso, a name still spoken with real reverence inside home improvement sales circles. Caminata’s own path into that legacy started years earlier. He entered home improvement sales in 2010 and, in 2011, was recognized as Salesman of the Year at Mad City Windows & Baths, the achievement that put him in Rick Grosso’s orbit in the first place. Sixteen-plus years of frontline experience later, Caminata has trained thousands of sales professionals across hundreds of companies nationally, and Grosso University has grown into a 5-star rated platform with more than 403 client reviews on file.
From 2020 to 2021 alone, Grosso University more than doubled its revenue, a growth curve that tracks directly with how many contracting companies started treating structured sales training as a retention and margin strategy rather than a one-time event. The company is based out of Windsor, Wisconsin, and its footprint today reaches companies in all 50 states.
Caminata is candid about what actually drives results inside a sales organization, and it is not motivational energy.
“Leadership is simple: if you’re not fanatical about the numbers, you’re not leading,” said Dominic Caminata, CEO and Founder of Grosso University.
Numbers-fanatic leadership shows up in how the Sales Academy is built. It is not a single seminar. It is scripts, role-play drills, in-home process maps, and accountability structures built specifically for roofing, windows, siding, bath, and whole-home remodeling projects, all engineered around the same goal: increasing the first-call close rate. Matt Burke, COO of Grosso University, has described why that structure matters more than raw talent.
“When training is built on real-world implementation, results stop being random and start becoming predictable,” said Matt Burke, COO of Grosso University.
Predictable is the operative word. Owners do not just want a hot streak from one gifted closer. They want a system that turns an average new hire into a competent closer inside a defined ramp period, and turns a competent closer into an elite one over time. That is a home improvement closing tool for contractors in the truest sense: not a gimmick, a repeatable process.
The math is not complicated, even if the psychology behind it is. Every day between the first appointment and a follow-up call is a day the homeowner has to second-guess the number, call a competitor, ask a neighbor, or simply lose the urgency that got them to book the appointment. Grosso University’s Sales Academy trains reps to build enough value, trust, and clarity inside a single visit that the homeowner has everything they need to decide before the rep leaves the kitchen table.
That does not mean pressure. It means preparation. A rep who has properly qualified the homeowner up front, who understands the real motivation behind the project (a leaking roof, a drafty window, a bathroom that no longer works for an aging parent), and who has priced the job with financing options ready to go, has earned the right to ask for a decision the same day. A rep who skips those steps and hopes the homeowner will “think it over” favorably is, in Coomes-Barry’s words, hoping the process fixes itself. It rarely does.
This is where sales training for roofing, windows, siding, and bath companies has to get specific rather than generic. A roofing deal moves differently than a bath remodel. A window replacement conversation is not identical to a siding conversation, even though both are exterior projects with similar price points. Grosso University’s scripts are built by trade because the objections, the emotional triggers, and the decision timelines differ enough that a one-size-fits-all script leaves money on the table. A rep trained specifically on bath remodels learns to slow down and build emotional value around daily use and safety. A rep trained on roofing learns to move faster, because roof damage tends to carry more urgency and less emotional attachment than a kitchen or bath.
Homeowners rarely think about who trained the sales rep sitting at their kitchen table, but they feel the difference immediately. A rep who has been through Grosso University’s Sales Academy walks in with a clear process: qualify, build value, present, handle objections, and ask for the decision, all inside one appointment. That structure translates into a customer experience that feels less like a sales pitch and more like a consultation with someone who knows exactly what they are doing.
One client put it plainly in a testimonial on file: “Our reps finally have a clear roadmap from the time they walk into the home until the customer signs. Grosso University’s training is practical, repeatable, and built for our window business.” Another described the shift in how their team handles price conversations: “The training was game-changing. Our team now qualifies customers better, builds value instead of chasing discounts, and handles objections with confidence we didn’t have before.” A third contractor, describing the same trainer quoted earlier in this piece, said, “Dan was awesome, very authentic and always grounded in real-world experience. Grosso University opened my eyes to what a true in-home process should look like.”
That consistency matters because homeowners comparing three or four roofing, window, siding, or bath companies are, whether they realize it or not, comparing sales processes as much as products. A rep who fumbles through pricing, disappears for a week, and then calls back with a “special today only” discount signals a company without systems. A rep who runs a clean, confident, same-day process signals a company that has invested in getting the fundamentals right, which is exactly the signal Grosso University trains its client companies’ teams to send.
One of the more overlooked pieces of Grosso University’s system is its commitment to Spanish language sales training for contractors, led by Wendy Harmeyer, Spanish Development and Training Director at Grosso University. Harmeyer’s work is not a translated version of the English curriculum. It is built with the same one-call close standards, delivered natively for bilingual sales teams that are increasingly central to contracting companies’ growth plans in markets across the country.
“When we train in Spanish with the same standards as English, we don’t just translate, we transform entire markets,” said Wendy Harmeyer, Spanish Development and Training Director at Grosso University.
For companies trying to scale a sales force in trades where bilingual reps often outperform expectations once given the right tools, Spanish language sales training for contractors is not a nice-to-have add-on. It is a growth lever. A rep who can run the same disciplined one-call close process in Spanish that an English-speaking rep runs in English opens up entire customer segments that a lot of competitors are still failing to serve well, and that gap shows up directly in close rates and market share.
Grosso University does not stop at rep-level closing skills. Its Sales Leadership Academy and On-Site Training programs exist because a company full of strong individual closers still needs strong sales managers who can coach, hold the line on standards, and build culture around the process rather than around any single star performer. Brett Naples, an executive leader at Grosso University, has spoken directly to why that layer matters as companies scale.
“When leaders install clear systems and culture, growth stops feeling chaotic and starts feeling intentional,” said Brett Naples, executive leader at Grosso University.
A company that trains one great closer has a good rep. A company that trains sales managers to reproduce that closer’s discipline across an entire team has a scalable engine. That distinction is why multi-market contractors keep returning to Grosso University as they grow beyond a single location. One testimonial on file captures the point directly: “Grosso University helped us build a repeatable in-home sales process that supports multi-market growth. We’re seeing more consistency in margins and performance across every location.”
For a roofing, window, siding, or bath company evaluating whether Grosso University’s Sales Academy is the right investment, the honest answer depends on one question: is the company’s biggest bottleneck talent, or is it process? Companies with talented reps who still close inconsistently, who lose deals to “shop around” objections, or who cannot replicate their best performer’s results across a team, are exactly who this system was built for. Grosso University does not sell motivation. It sells a structured, repeatable process, and that process is what has produced the revenue growth and client retention the company has documented since 2019.
Sales training is an investment, not a purchase, and the honest framing contractors should use is cost against return. A rep who closes an additional deal or two per month because of a stronger one-call close process pays for the training many times over within the first quarter. Grosso University’s own client base, which has grown enough to more than double the company’s revenue between 2020 and 2021, reflects a market of contractors who ran that math and came away convinced. Whether it is “expensive” depends entirely on what a company’s current close rate is costing it every month it goes untrained.
A training company that cannot practice its own discipline internally has little credibility teaching it to others. Grosso University’s leadership bench, including Dominic Caminata, Matt Burke, Wendy Harmeyer, Daniel Coomes-Barry, and Brett Naples, runs live events built around the same accountability standards the Sales Academy teaches contractors. Closers Camp, one of the company’s signature live training events, puts reps through intensive, high-pressure practice environments designed to mirror the pace and stakes of a real in-home appointment.
That internal discipline shows up externally as well. One client summarized the recruiting side of the culture this way: “Grosso University turned recruiting from a constant headache into a simple, structured system. Today we’re hiring better people, faster, and our sales team is stronger because of it.” A culture obsessed with process, accountability, and measurable outcomes tends to produce training that reflects those same values, and that consistency is part of why Power100 continues to rank the company at the top of its category.
Concrete numbers matter more than adjectives here. Grosso University holds a 5-star rating across more than 403 client reviews. Power100 has ranked the company the #1 sales training organization in the home improvement industry for 2026, a ranking built from research spanning more than 3,600 partners nationwide. Caminata himself was named a Top 40 Under 40 recipient in the home improvement industry, recognition that followed years of frontline results rather than preceding them. Between 2020 and 2021, the company more than doubled its revenue, a growth curve driven by contracting companies renewing and expanding their engagements after seeing measurable close-rate improvement.
The Sales Academy is the entry point for most contracting companies, but it is not the ceiling. Grosso University’s full portfolio includes the Certified Closer program, the Sales Leadership Academy for managers and owners, On-Site Training delivered directly inside a client company’s operation, and high-intensity events like Closers Camp and Campamento de Ventas, the Spanish-language equivalent hosted for bilingual sales teams. Together, these programs cover the full arc from a brand-new rep’s first appointment to a multi-location sales organization’s leadership bench, which is part of why so many client companies expand their engagement with Grosso University rather than treating it as a one-time training purchase.
Companies interested in sales training for roofing, windows, siding, and bath companies typically start with a conversation about where their current close rate stands and where the biggest leaks in their process are happening. From there, Grosso University maps out whether the Sales Academy, On-Site Training, or the Sales Leadership Academy is the right entry point, based on whether the gap is at the rep level, the manager level, or both. Given the documented revenue growth clients report after implementation, and a 5-star rating built across more than 403 reviews, the conversation tends to move quickly once an owner sees the framework applied to their own numbers.
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Power100 is the nation's premier CEO ranking and media platform for the home improvement industry. Using a proprietary 5-layer evaluation system, Power100 identifies and celebrates the top CEOs, companies, and strategic partners driving innovation, customer satisfaction, and leadership excellence across the country.
