About Us - Mainstream Home Improvement
In the summer of 2001, Jeff Wroblewski and Spencer Sierra, the partners
and owners of Mainstream Home Improvement, Inc. began contemplating
opening a home improvement business. With years of combined experience
they came together to form and build a home improvement business based
on satisfied customers. It is their goal to offer the finest home improvement
products and the most affordable prices. Mainstream Home Improvement
will focus on a relentless pursuit of customer satisfaction and trust.
We are confident you will be happy with our work and your finished product.

From left, co-owners Jeff Wroblewski, Spencer Sierra,
office manager Marci McMullen and production manager Dave Flores all
work at Mainstream Home Improvement in Rock Island. The business, which
installs windows, doors, vinyl siding and other home improvements recently
won Score's Small Business of the Year award.
Mainstream Vision Statement
“At Mainstream Home Improvement we are a company that believes in building personal relationships with all of our past, present, and future customers. We will listen to our customer needs and provide them with the best possible service and products at the best possible price. We will treat each customer with respect. We will deliver an experience to our customer that is second to none and better than they could have ever imagined.”
Licensed, Bonded & Insured
We are a company that is licensed, bonded, and insured. We
take pride in handling your home improvement project from
start to finish. Because we are licensed and insured, we may
purchase permits in any city we work, and we have adequate
insurance in case of an accident. Our insurance agency is
Cleaveland Insurance in Rock Island,
IL. If you have any questions regarding our insurance policy,
please contact them at 309-794-9700 ext 202.
Victory Lap
Our goal is your complete satisfaction and approval. With
Dave Flores inspecting every job site daily, our high standards
of job performance is constantly maintained. Each installation
crew has a specific duty with Mainstream.
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Our window crews install windows, Siding crews install
siding, and roofing crews install roofs. All crews are
highly trained, skilled professionals who work year-round.
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At the time of completion, Dave will hand the customer
a victory lap certificate to sign. We ask each customer
to sign a copy of the victory lap after a complete and
thorough job inspection has been done. Our job inspection
includes cleaning up and hauling away all related debris;
including cleaning all windows if purchased, cleaning
all exterior walls on a siding project, and for new roofs;
walking around the house with a nail magnet to make sure
we leave a clean job site.
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We offer quality products, top-notch installation, and
will service our product far after the sale. Customer
referrals are a large part of our business and know that
if you are happy we are happy.
Company Memberships
- Better Business Bureau
- Chamber of Commerce
- Quad Cities Homebuilder's Association
Charitable Contributions
- Children's Therapy Center of the Quad Cities
- Newspapers In Education
- Muscular Dystrophy
- Area Schools
- Area Churches
- Birdies for Charity
- Arrowhead Ranch
- Boy Scouts and Girls Scouts of the Quad Cities
- Area Sporting Teams
- Quad Cities Marathon
Call Today To Set Up Your Free Estimate
866 • 786 • 8500
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