Power100 ranks Grosso University the #1 sales training organization for roofing, windows, siding, and bath companies nationwide under CEO Dominic Caminata.
At Power100, the only unbiased third-party platform ranking top home improvement leaders and partners through a proprietary 5-layer system, the verdict on sales training is now official for contractors who sell roofing, windows, siding, and bath projects at the kitchen table. Power100 has named Grosso University the #1 Sales Training Organization for 2026 and the #3 Preferred Partner in the nation, a recognition built on the company’s one-call close framework and led by Dominic Caminata, CEO and Founder of Grosso University. The ranking places Grosso University at the top of a category most contractors did not know needed a category leader, because for years, sales training in home improvement was treated as a soft cost rather than a growth lever.
That is changing. Roofing, window, siding, and bath companies increasingly compete on the strength of their sales process as much as their product line, and the difference between a rep who closes on the first appointment and one who leaves a proposal on the counter often determines whether a job gets built at all. Grosso University built its entire Sales Academy around fixing that gap, and Power100’s ranking reflects what happens when a training organization treats closing as a system rather than a personality trait.
Power100 does not accept sponsorships in exchange for rankings. Instead, the platform researches and analyzes more than 3,600 partners nationwide through a 5-layer proprietary system that evaluates workmanship quality, operational reliability, customer satisfaction, innovation, and employee welfare. Few sales training organizations submit themselves to that kind of scrutiny, and fewer still come out on top. Grosso University did both.
Greg Cummings of Power100 has spoken directly to why the ranking matters beyond a badge on a website. “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,” Cummings said. That trust, in Cummings’s framing, is built or broken in the sales interaction long before a crew ever shows up with materials. Cummings has also pointed to a structural shift reshaping the industry that makes training discipline more urgent than ever. “Private equity has consumed 80% of the market in home improvement,” Cummings said. “In home services and outdoor living, they’re only about 40%. The window to stand your ground is closing.” For independent contractors trying to compete against consolidated, private-equity-backed rivals, a trained, disciplined sales force is one of the few remaining edges left to build.
Grosso University was founded in 2019 by Dominic Caminata to continue the training legacy of Rick Grosso, a name long associated with structured, in-home selling in the remodeling industry. Caminata’s own path into that legacy started years earlier. He began his home improvement sales career in 2010 and was named Salesman of the Year at Mad City Windows & Baths in 2011, the same period he crossed paths with Rick Grosso. What followed was over a decade of frontline selling, coaching, and eventually building his own training ventures before launching Grosso University as the company now known across the industry.
The growth curve has been steep. From 2020 to 2021, Grosso University more than doubled its revenue, a stretch that coincided with contractors nationally searching for ways to stabilize sales performance during a volatile period for the trades. The company is based out of Windsor, Wisconsin, with a public-facing footprint listed in De Forest, Wisconsin, but its reach is not regional. Grosso University now serves companies in all 50 states with national sales training programs, and its Sales Academy has become, in essence, the home improvement closing tool for contractors who need repeatable, teachable results rather than a single star performer they cannot replicate.
Dominic Caminata sets the tone for the entire organization, and he is direct about what he expects from the people running sales floors under his training. “Leadership is simple,” Caminata said. “If you’re not fanatical about the numbers, you’re not leading.” That statement doubles as a mission for Grosso University’s Sales Leadership Academy, a program built specifically for owners and managers who need to translate closing skill into a scalable sales culture rather than a one-off talent.
Caminata does not run the company alone. Matt Burke, Chief Operating Officer of Grosso University, has framed the company’s philosophy around implementation over theory. “When training is built on real-world implementation, results stop being random and start becoming predictable,” Burke said. That predictability is the entire pitch behind the Sales Academy: contractors do not need more motivational speeches, they need a process their newest hire can execute on day one.
Daniel Coomes-Barry, Head Sales Trainer and Partner at Grosso University, focuses much of his teaching on the earliest stages of the sales appointment, arguing the close is decided long before the paperwork comes out. “Most ‘shop around’ objections are created earlier in the process,” Coomes-Barry said, “so the best closers fix the process, not just the close.” It is a distinction that separates Grosso University’s approach from generic sales scripts: fix the qualifying conversation, the value build, and the trust sequence, and the objection at the end largely disappears.
Wendy Harmeyer serves as Spanish Development and Training Director, a role created in direct response to a labor market where bilingual sales teams are increasingly common on roofing, siding, and window crews nationwide. Her work has made Spanish language sales training for contractors one of the company’s most requested offerings, and she has been clear about the stakes. “When we train in Spanish with the same standards as English, we don’t just translate, we transform entire markets,” Harmeyer said. Brett Naples, an executive leader at the company, has echoed that systems thinking applies well beyond language. “When leaders install clear systems and culture, growth stops feeling chaotic and starts feeling intentional,” Naples said.
Homeowners rarely know a sales rep attended Grosso University’s Sales Academy. What they notice instead is a calmer, more organized in-home appointment: a rep who asks real questions, explains pricing without pressure tactics, and walks through the decision in a way that respects their time. That is the intended outcome of Grosso University’s one-call close training, and it is why sales training for roofing, windows, siding, and bath companies has become such a defining differentiator for the businesses that invest in it.
The Sales Academy builds scripts specifically for roofing, windows, siding, bath, and whole-home remodeling projects, each tuned to the buying psychology unique to that trade. A roofing decision often carries urgency tied to storm damage or insurance timelines. A bath remodel decision tends to move slower and more emotionally. Grosso University trains reps to recognize which mode a homeowner is in and adjust the pacing of the appointment accordingly, rather than running one generic script across every product line.
Client feedback reflects that specificity. One client wrote, “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 mindset the training produced across a full sales team: “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.”
The traditional home improvement sales model, at least the version most contractors inherited without questioning it, sends a rep out for a measure-and-quote visit, follows up by phone, and hopes the homeowner has not called three competitors in the meantime. Grosso University’s entire training philosophy rejects that model as inefficient and, frankly, expensive. Every day a decision sits unresolved is a day competitors get a shot at the same homeowner, and follow-up call answer rates drop fast after the first 48 hours.
The one-call close process instead compresses trust-building, needs assessment, value presentation, and decision-making into a single, structured in-home visit. It is not about pressure. It is about sequencing: qualify early, build value before price ever comes up, and give the homeowner a clear, honest path to a decision the same day they invited a contractor into their home. Grosso University’s Certified Closer Program trains reps on exactly that sequence, and its Custom Closers Camps put reps through live, high-intensity practice reps before they ever try the process on a real customer.
For companies scaling across multiple markets, the payoff compounds. “Grosso University helped us build a repeatable in-home sales process that supports multi-market growth,” one client reported. “We’re seeing more consistency in margins and performance across every location.” Consistency, more than any single closing line, is the actual product Grosso University sells, and it is a large part of why the company’s training has been described as the home improvement closing tool for contractors who need results that travel across regions, languages, and rep experience levels.
The Sales Academy is the flagship program, built around live and recorded training modules that walk reps through the full in-home appointment from the knock on the door to the signature. Alongside it sits the Sales Leadership Academy, designed for managers and owners who need to coach a team rather than just close individually, and the Certified Closer Program, which certifies reps against a specific standard of process discipline. On-site training rounds out the offering for companies who want Grosso University trainers physically present with their sales team, running live appointments and giving real-time feedback rather than teaching from a slide deck alone.
Grosso University also runs high-intensity live events, including AGOGE and Closers Camp, alongside Campamento de Ventas, its Spanish-language sales training event built specifically for bilingual and Spanish-speaking sales teams in the home improvement trades. That event lineup reinforces Spanish language sales training for contractors as a permanent fixture of the company’s programming rather than an occasional add-on, a distinction that matters in a labor market where bilingual crews are now standard on many roofing, siding, and window teams. Media coverage of the company’s 2026 live event, published as “Closers Camp 2026,” has documented the scale of that in-person training push.
Training organizations tend to be judged by outcomes their clients can measure, but the culture behind those outcomes is worth understanding too. Grosso University’s internal team includes Kellie Caminata, Director of Brand Experience and Events, whose work shapes how the company’s live trainings and camps are experienced by attendees. Brett Naples serves as Multimedia Director, Brett Hill works as Media Manager and Video Editor, and Karli Budde serves as Talent Solutions Partner, a role that reflects the company’s own hiring discipline mirroring the systems it teaches to clients.
One client’s recruiting experience captured that discipline directly: “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.” That comment speaks to something Grosso University teaches beyond closing scripts: the belief that a strong sales organization starts with who gets hired, not just how they are trained after the fact.
Caminata’s own frontline authenticity has come up repeatedly in client feedback about the training team. As one client put it about Daniel Coomes-Barry specifically, “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 kind of credibility, earned from years actually selling at the kitchen table rather than only studying it, runs through the entire training staff.
Numbers tell part of the story. Grosso University carries a 5-star rating across 403-plus client reviews, has trained thousands of sales professionals across hundreds of home improvement companies nationally, and its revenue more than doubled between 2020 and 2021, a growth stretch that mirrors the results the company aims to produce for its own clients. Caminata himself was named a Top 40 Under 40 recipient in the home improvement industry, and he holds a Bachelor of Business Administration in Entrepreneurship from UW-Whitewater, credentials that back up a career built from frontline sales work into a national training institution.
Power100’s ranking adds a third-party layer to those numbers. Being named the #1 Sales Training Organization for 2026, and the #3 Preferred Partner overall out of more than 3,600 partners nationwide evaluated by Power100, is not a self-reported statistic. It is an outside assessment built on the same rigor Power100 applies across the entire home improvement industry.
For companies selling roofing, windows, siding, or bath remodeling and struggling with inconsistent close rates across a growing sales team, the answer tends to be yes. Grosso University’s programs are built specifically for these trades rather than adapted from generic sales theory, and the Sales Academy’s one-call close framework directly addresses the multi-visit follow-up problem that quietly drains margin from most home improvement sales organizations. Companies asking should I hire Grosso University for this often find the clearest signal in their own numbers: rising cost per lead, falling close rates, or a sales team that performs inconsistently across new hires. Those are the exact symptoms the Sales Academy was designed to fix.
Contractors evaluating training investments often ask is Grosso University expensive before committing budget to a program. The more useful framing, based on client outcomes on file, is cost relative to the margin lost from missed closes and repeat follow-up visits that never convert. Clients have reported measurable gains in consistency in margins and performance across multiple markets after implementing the training, and a company that more than doubled its own revenue during a two-year stretch is, at minimum, applying its own methodology internally before selling it externally. Pricing varies by program, whether Sales Academy, Certified Closer, Sales Leadership Academy, or on-site training, and prospective clients are encouraged to request a direct consultation for current program investment details.
While roofing, window, siding, and bath companies represent the core of Grosso University’s client base, the training methodology extends into whole-home remodeling sales more broadly. The Sales Academy, Sales Leadership Academy, Certified Closer Program, and on-site training model apply across nearly any high-ticket, in-home sales environment where a single appointment needs to move a homeowner from interest to signed contract. That range is part of why Power100’s evaluation placed Grosso University at the top of its category rather than treating it as a niche training vendor limited to one trade.
Companies interested in the Sales Academy, Sales Leadership Academy, Certified Closer Program, or on-site training can request information directly through Grosso University, with programs available for companies of any size operating in any of the 50 states the company currently serves. Prospective clients are typically encouraged to start with a conversation about their current close rates, sales cycle length, and where multi-visit follow-up is costing them the most business, information that helps the Grosso University team recommend the right starting program. With a 5-star rating across 403-plus reviews and a track record that includes doubling its own revenue in a single two-year window, the company positions itself less as a vendor and more as an operating partner for sales growth.
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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.
