Lower Energy Bills with Professional Insulation
Attic Insulation Services | Residential Insulation Specialists
Is Your Attic Costing You Money?
Improve comfort, reduce energy bills , and stop heat loss with professional attic insulation installed by a local, family-owned company.
Why Choose Us?
Our expert insulation services provide excellent thermal performance, ensuring your home stays warm in winter and cool in summer. Trust our skilled team for reliable installation.
Our Process
We assess your attic space, recommend the best insulation type, and provide professional installation. Our goal is to enhance your home’s efficiency while keeping it comfortable.
Customer Testimonials
Don’t just take our word for it. Hear from satisfied customers who've experienced our top-notch insulation services. Their comfort is our pride!
Contact Us Today
Ready to improve your home's insulation? Get in touch with Greenshield Insulation for a free estimate and expert advice on the best solutions for your needs.
Attic Insulation Calculator
Estimate how much insulation your attic may need for better comfort and energy efficiency in Southwest Michigan.
Calculator Inputs
This tool provides a planning estimate only. Final recommendations depend on air sealing, attic condition, ventilation, and code goals.
Your Estimate
Want an exact recommendation for your home in Mattawan, Kalamazoo, Portage, Paw Paw, or nearby? Contact Greenshield Insulation for a free estimate.
R-Value Insulation Guide
Climate Zone 5 • SW Michigan (Typical Code Targets)
Fast Reference
Climate Zone 5: Common across Southwest Michigan.
Always confirm local adoption/requirements for your municipality.
| Area | Typical Minimum R-Value | Notes |
|---|---|---|
|
Attic / Ceiling Unfinished attic space | R-49 | Air seal first for best performance. |
|
Exterior Walls Wood-framed 2×4 / 2×6 | R-20 | Alt common path: R-13 + R-5 continuous. |
|
Mass Walls Concrete / brick / CMU | R-13 | May vary by % of wall above grade. |
|
Floor Over unconditioned space | R-30 | Band/rim joists matter a lot here. |
|
Basement Walls Below grade | R-15 to R-19 | Continuous insulation commonly used. |
|
Crawl Space Walls Vented or unvented | R-15 to R-19 | Best results when sealed + conditioned. |
|
Slab Edge Heated slab (where required) | R-10 | Often for a specified depth at perimeter. |
Greenshield Insulation is a locally owned insulation contractor based in Mattawan, Michigan, specializing in spray foam, attic, and crawl space insulation. We serve homeowners and businesses throughout Southwest Michigan, including Kalamazoo, Portage, and Paw Paw, providing energy-efficient solutions, professional installation, and free estimates.
23247 W McGillen Ave Mattawan, Michigan 49071
Monday, Tuesday, Wednesday, Thursday, Friday9:00 am – 5:00 pm
Greenshield Insulation