Mainstream Home Improvement Inc

What Mainstream Home Improvement Inc does

Mainstream Home Improvement Inc is a private regional home improvement contractor founded in 2001 and headquartered at 1554 52nd Avenue, Moline, Illinois. The company sells and installs exterior renovation products — replacement windows (including exclusive distribution of Infinity® by Marvin® fiberglass windows built on Ultrex® technology, plus MI, Sunrise, and Restoration product lines), vinyl and composite siding (Royal Building Products, including Celect®), roofing using Malarkey Shingles, and seamless gutters with Leaf Exterminator™ gutter covers — to residential homeowners across 16 cities in Eastern Iowa and Western Illinois (the Quad Cities Metro Area and extended service region). Services are delivered by factory-certified installers via a direct-to-consumer sales motion consisting of in-home consultations, free estimates, phone-based intake, and website lead capture.

The business operates a transaction-based revenue model built around one-time project fees for product markup and installation labor, supported by third-party consumer financing (12-month no-interest promotional options through independent lenders) to make higher-ticket projects accessible. Pricing is quote-based and not publicly disclosed. The go-to-market relies on a 3D home design visualization app for mid-funnel engagement, a referral program for repeat and referred demand, and local SEO with city-specific landing pages for top-of-funnel acquisition. All 15 named customers in source material are individual residential homeowners (SMB/consumer segment), with reviews referencing installations in Davenport, Rock Island, Moline, East Moline, Bettendorf, Peoria, Morton, and Le Claire.

Mainstream is owner-operated with no disclosed outside investors, no parent company, no subsidiaries, no funding rounds, and no mergers or acquisitions. The company holds Iowa Construction Contractor Registration #C106386 and Illinois Limited Roofing License #104.013813. Operational scale signals include 1–10 employees, 24+ years in business, more than 300 cumulative five-star Google reviews, Quad Cities' #1 voted window contractor status, and award recognition including a 2004 Better Business Bureau Integrity Award, a SCORE Business of the Year Award, the Rock Island Recycling Award, and the 2025 Locals Love Us Award. The company also operates under the DBA 'Quad City Home Improvement' to reinforce cross-border Iowa–Illinois market positioning.

Name

Mainstream Home Improvement Inc

Legal name

Mainstream Home Improvement

Website

https://mainstreamhi.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

1–10 employees

Short description

Mainstream Home Improvement Inc is a private, Moline, Illinois-based home improvement contractor serving residential homeowners across 16 cities in the Quad Cities Metro Area, specializing in replacement windows (including exclusive Infinity® by Marvin®), siding, roofing, and gutter installation via in-home consultation sales.

Ownership category

akta.pro rank

Product category

Residential Exterior Home Improvement Contracting

NAICS

Residential Remodelers (236118)

SIC

General Bldg Contractors - Residential Bldgs (1520), Services-To Dwellings & Other Buildings (7340)

akta.pro industry

PRIMARYHSAPAEAD

Whole-Home Exterior Renovation (Envelope & Curb Appeal)

Home & Personal Services/Residential Renovation Services/Whole-Home Renovation & Remodel

Keywords

• Window replacement services
• Residential siding installation
• Exterior home renovation
• Roofing replacement services
• Gutter and leaf guard installation

Headquarters

HQ city

Moline

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Window Installation & Sales: Replacement window installation and sales including Infinity® by Marvin®, MI Windows and Doors, Sunrise Windows, and Restoration Windows. Revenue generated from product markup and installation labor.
2. Siding Installation: Vinyl siding installation services including Celect® Cellular Composite Siding by Royal Building Products. Revenue from materials and labor.
3. Roofing Installation: Roofing installation and replacement services using Malarkey Shingles and other materials.
4. Gutter Installation & Covers: Seamless gutter installation and Leaf Exterminator™ gutter cover installation services.
5. Patio Door Installation: Sliding patio door installation services.
6. Financing Services: Third-party financing options offered to qualifying customers through independent lenders, enabling higher-ticket purchases.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Mainstream Home Improvement Inc is an exterior home remodeling contractor that sells and installs replacement windows (with a focus on Infinity by Marvin Ultrex fiberglass), siding (vinyl and Celect cellular composite), roofing systems, seamless gutters with Leaf Exterminator covers, and sliding patio doors for residential homeowners in the Quad Cities area. Each engagement is delivered as a turnkey project — product selection, in-home measurement, certified installation, and warranty handling — rather than as a standalone product sale.

Product overview

Mainstream Home Improvement Inc is a home improvement contractor offering a comprehensive portfolio of exterior renovation products and installation services. The core offerings center on replacement windows (including premium Infinity® by Marvin® fiberglass windows as the exclusive Quad Cities dealer), vinyl and composite siding, roofing with Malarkey shingles, seamless gutters, and gutter covers featuring Leaf Exterminator™. The company provides these as discrete service categories—windows/patio doors, siding, roofing, and gutters—that are sold and installed together as part of whole-home exterior upgrade projects. A notable service feature is a 3D home design tool that creates interactive 3D models from smartphone photos to help customers visualize products before purchase.

Differentiator

Problem solved

Functional benefit

Products and services

• Infinity by Marvin Replacement Windows Ultrex fiberglass replacement windows (double-hung, casement, and related configurations) supplied and installed by a factory-certified contractor for Quad Cities homeowners seeking durable, energy-efficient replacements to existing windows.
• Sliding Patio Doors Supply and installation of sliding patio doors integrated with the home's existing or newly renovated exterior, sold as a standalone project or alongside window and siding replacements for residential customers.
• Vinyl Siding Installation Installation of vinyl siding on residential exteriors for homeowners seeking a low-maintenance, cost-effective cladding upgrade.
• Celect Cellular Composite Siding Installation Installation of Celect cellular composite siding, a premium low-maintenance alternative to wood or vinyl that replicates the look of painted wood without the upkeep, for homeowners prioritizing curb appeal and durability.
• Residential Roofing Installation Residential re-roofing and storm-damage roof replacement using Malarkey and comparable roofing systems, including tear-off, underlayment, and shingle installation, for single-family homeowners in the Quad Cities.
• Seamless Gutter Installation On-site fabrication and installation of seamless gutters sized to the home's roofline, providing proper water drainage and protecting fascia and foundations.
• Leaf Exterminator Gutter Cover Installation Installation of Leaf Exterminator gutter covers designed to keep leaves and debris out of gutters, reducing maintenance and the risk of overflow damage for residential customers.

Quantifiable outcome

• Windows 8x stronger than vinyl with 17 U.S. tons of strength per square inch
• +4 more outcomes

Named customers14 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Marvin Windows and Doors (Infinity® by Marvin®)coreOEM/ Whitelabel/ Licensing Partner · 1 January 2025Exclusive authorized Infinity® by Marvin® dealer in the Quad Cities Metro Area since 2025. Factory-certified installation team trained by Marvin. Access to exclusive Marvin resources, parts, and limited lifetime warranty support for customers.
• Malarkey Roofing ProductsminorChannel Partner/ Reseller/ DistributorCertified Residential Contractor status. Offers Malarkey Shingles for roofing installation projects in the Quad Cities area.
• MI Windows and DoorsminorChannel Partner/ Reseller/ DistributorWindow dealer offering products covered under Limited Lifetime Customer Assurance Warranty. Includes Glass Breakage Limited Warranty option.
• Royal Building Products (Celect®)minorChannel Partner/ Reseller/ DistributorExclusive installer of Celect® Cellular Composite Siding. Vinyl siding with weather resistance and low maintenance properties.
• Leaf Exterminator™minorChannel Partner/ Reseller/ DistributorGutter guard product partnership providing long-lasting protection against leaves, debris, and pests.
• Sunrise WindowsminorChannel Partner/ Reseller/ DistributorWindow brand offered as part of product portfolio for Quad Cities homeowners.

Scale indicators7 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Pella Windows & Doors: National window and door manufacturer with a large certified-dealer and installer network offering premium products. Comparable premium-product positioning, though Pella competes via dealer/installer relationships rather than as a direct D2C contractor.

Direct peers

• Renewal by Andersen: National window and door replacement franchise owned by Andersen Corporation, using a direct-to-consumer, in-home sales model with proprietary Fibrex® composite material. Closely comparable to Mainstream in product positioning, premium-brand story, and end-to-end installation model.
• Long Home Products: Regional direct-to-consumer exterior home remodeling company offering windows, roofing, siding, and doors across the Mid-Atlantic and Southeast. Closely analogous in business model and bundled-trade value proposition.
• Power Home Remodeling: Large direct-to-consumer exterior remodeling company operating across the Midwest and East Coast with windows, siding, roofing, and gutters. Comparable multi-trade residential offering, in-home sales motion, and energy-efficiency value proposition.
• Champion Windows: National direct-to-consumer exterior remodeling company offering windows, siding, roofing, and sun rooms via in-home sales. Mirrors Mainstream's four-trade bundle and residential homeowner focus, but at significantly larger scale.
• Window World: Largest window replacement franchise in the United States, operating a sales-led, in-home consultation model selling vinyl and specialty replacement windows. Highly comparable to Mainstream's window-centric GTM, target homeowner segment, and bundled exterior offering.
• Harvey Building Products: Northeast and Midwest regional window and door manufacturer selling through an authorized dealer network for residential replacement. Comparable premium dealer-based window-replacement model serving a defined regional geography.
• LeafFilter: National direct-to-consumer gutter protection company selling gutter guards via in-home sales. Overlaps directly with Mainstream's Leaf Exterminator™ gutter cover offering and shares the same D2C, in-home-presentation GTM.

Others

• Marvin Windows and Doors: Premium national window and door manufacturer and the parent brand behind Mainstream's flagship Infinity® product line. Functions as the company's key OEM supplier rather than a competitor, but its branded dealer-network strategy directly shapes Mainstream's competitive context.

Regional players

• Feldco: Midwest-based direct-to-consumer exterior remodeling company specializing in windows, siding, and doors with showrooms across Illinois and surrounding states. Comparable product mix and sales motion, with overlapping service-area geography in Illinois.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/mainstreamhome
• Facebookfacebook.com/mainstreamhi
• LinkedInlinkedin.com/company/mainstream-home-improvement-inc.

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mainstream Home Improvement Inc