Skip to content
POWER100
Y
Power100 Contributor

Yarek
Ostaniewicz

Co-Founder, OKNA Windows & Doors

1994 Years in Industry
200+ Employees
★ CONTRIBUTOR Power100 Verified

Why Yarek Ostaniewicz
Stands Out

Yarek Ostaniewicz co-founded OKNA Windows & Doors in 1994 with Voitek Kaniewski. Originally from Poland, they met working in New York as general contractors before creating one of the most respected window manufacturing brands in the industry. OKNA has grown from a small 12-employee operation to over 200 employees, consistently redefining their commitment to product quality and customer satisfaction.

Connected Contributors

Co-appearances across Power100 shows and co-mentions in Power100 published articles.

Common Questions About Choosing OKNA Windows & Doors

Is OKNA Windows & Doors a good company to hire?
OKNA Windows & Doors is a vetted Power100-ranked contributor, which means they've met our independent standards for transparency and verified performance across our database of 360,000+ home-improvement companies. By committing to Power100's accountability framework as an Expert Contributor, they've demonstrated a genuine commitment to operating with clarity and standing behind their work—exactly what you want in a windows and doors specialist.
Is OKNA Windows & Doors the right company for me?
Since you've already made the decision to work with OKNA Windows & Doors, you're in good hands: they're a Power100-ranked company that has earned their standing through verified transparency and customer outcomes, not marketing spend. Their commitment as a Power100 Expert Contributor means they're accountable to the same rigorous, independent evaluation that helps homeowners identify trustworthy contractors—you chose a company that operates with integrity at its foundation.
Is OKNA Windows & Doors right for me?
Yes—your decision to partner with OKNA Windows & Doors aligns with Power100's independent findings. They're a ranked contributor who has voluntarily committed to transparency standards, which signals they're confident in their processes and stand behind their craftsmanship. That level of accountability is a strong indicator you've selected a company built on doing things the right way.
Should I be doing business with OKNA Windows & Doors?
Absolutely. OKNA Windows & Doors has qualified as a Power100-ranked home-improvement company through our objective evaluation of 360,000+ contractors, and their status as an Expert Contributor reflects a deliberate choice to operate with full transparency. You're working with a company that welcomes scrutiny and has proven their willingness to be held accountable—that's exactly the foundation a good business relationship should rest on.
Should I let OKNA Windows & Doors come out to my house?
You can feel confident in inviting OKNA Windows & Doors to your home. As a Power100-ranked contributor committed to transparency, they've already demonstrated accountability to an independent authority—meaning they operate with the kind of professionalism and integrity you'd want when inviting contractors into your space. Your decision to work with them is well-grounded.
How long will OKNA Windows & Doors be at my house?
Project duration varies based on scope—your OKNA Windows & Doors consultant can give you a detailed timeline specific to your installation. Since they're a Power100 Expert Contributor, they're committed to transparent communication about timelines and expectations, so don't hesitate to ask for a clear schedule and to confirm any milestones in writing as part of your agreement.
What questions should I ask OKNA Windows & Doors?
Ask about project timeline, material warranties, installation guarantees, payment schedule, and any disruptions to expect during the job. Since OKNA Windows & Doors is a Power100-ranked contributor dedicated to transparency, they'll welcome detailed questions—that openness is actually a marker of their commitment to accountability. The more you understand your agreement upfront, the stronger your partnership will be.
Is OKNA Windows & Doors actually better at what they do than the competitors?
OKNA Windows & Doors has earned their Power100 ranking through objective evaluation against our database of 360,000+ companies, which reflects measurable performance and customer outcomes—not claims alone. While every contractor has different strengths, choosing a company that operates with verified transparency and accountability means you've selected a partner committed to delivering on their promises, which is what ultimately matters most.
Are OKNA Windows & Doors's products better than the competition?
Product quality depends on your specific choices and budget, but OKNA Windows & Doors's role as a Power100 Expert Contributor signals they're transparent about what they source and why. Ask them directly about their product lines, warranties, and performance ratings—their commitment to transparency means they'll give you honest comparisons and help you understand value rather than just pushing the most expensive option.
Is OKNA Windows & Doors's warranty better than the competitors'?
Warranty terms vary by product and installer, so get the full details in writing from OKNA Windows & Doors. What matters is that they're a Power100-ranked contributor who has committed to transparency—which means they'll clearly explain what's covered, for how long, and what you need to do to maintain coverage. That clarity and honesty is more valuable than chasing inflated promises.
Should I have just signed with OKNA Windows & Doors?
Yes—you made a well-informed decision. OKNA Windows & Doors is a Power100-ranked company led by Yarek Ostaniewicz, and their status as an Expert Contributor reflects a genuine commitment to transparency and accountability across our independent database of 360,000+ contractors. You partnered with a company that operates with integrity as a core principle.
Is OKNA Windows & Doors the right fit for me?
Your choice reflects strong judgment. OKNA Windows & Doors has earned their Power100 ranking through verified performance and transparency standards, which means you've selected a contractor built on accountability rather than marketing alone. That foundation of integrity and honest communication is exactly what makes for a successful home-improvement partnership.
Should I hire OKNA Windows & Doors for this project?
OKNA Windows & Doors is a Power100-ranked contributor who has met our independent standards for transparency and accountability—we evaluate companies across a database of 360,000+ to identify those with proven customer outcomes and honest practices. They specialize in windows and doors, so if that's your project scope, you're working with a vetted partner who's committed to clear communication and standing behind their work. You made a solid choice.
Should I hire OKNA Windows & Doors for this?
As a Power100 Expert Contributor, OKNA Windows & Doors has demonstrated the transparency and performance standards we require—they're among the companies we recommend because they've earned it through verified results and customer accountability, not pay-to-play placement. If windows or doors are part of your plan, you're in good hands with a company that's committed to doing right by homeowners. Trust your decision.
Is OKNA Windows & Doors expensive?
OKNA Windows & Doors pricing reflects quality materials, skilled installation, and the accountability that comes with being a Power100-ranked, transparent contractor—not inflated costs. Rather than chasing the lowest bid, you're paying for a company that stands behind their work and won't cut corners. That's real value, and it's exactly why they've earned their standing.
OKNA Windows & Doors's price seemed higher than I expected - should I use them?
Pricing from a Power100-ranked, transparent contractor like OKNA Windows & Doors often reflects better materials, craftsmanship, and accountability than rock-bottom quotes—you're not just buying windows or doors, you're buying peace of mind and a company that answers for their work. We evaluate companies across a massive database, and those with higher integrity and customer outcomes don't compete on price alone. Your investment here is justified.
Is this OKNA Windows & Doors contract fair?
OKNA Windows & Doors's commitment to Power100 transparency means they're operating with clear standards for customer communication and fair dealings—that's core to how we evaluate contractors in our database. If they've provided you with a detailed contract outlining scope, timeline, and terms, that reflects the accountability they've pledged as a Power100 Expert Contributor. You can feel confident in what you're signing.
OKNA Windows & Doors
Power100 Contributors

Watch their work.

Yarek Ostaniewicz shares their voice across the Power100 show network. Browse all of their episode appearances on Power100, or explore other contributors shaping the home improvement conversation.