Builders Studio

5401 W. Grand River Ave.
Lansing, MI 48906
517-256-4167  MAP


1191 E. Grand River Ave.
Williamston, MI 48895
517-655-4641  MAP


5401 W. Grand River Ave.
Lansing, MI 48906
517-321-7766  MAP

Store Hours

Mon-Fri: 8 a.m. - 5 p.m.
Sat: Closed
Sun: Closed
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THERMAX insulation


THERMAX™ (ci) Exterior Insulation helps U.S. commercial building owners meet the ASHRAE prescriptive continuous insulation requirement. It is also a key component of the THERMAX™ Wall System.

The integral, durable facer of THERMAX™ (ci) Exterior Insulation provides a drainage plane and water-resistive barrier, eliminating the extra step of installing a membrane or building wrap. The lightweight polyisocyanurate foam core provides one of the highest R-values available (R-6.5 at 1") for long-term thermal performance.

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MPC Cashway Lumber Michigan is family-owned and has been serving the Lansing area for 50 years.  We carry a wide variety of building supplies for projects large or small.  Whether you are building a home, polebarn, deck or remodeling a kitchen, MPC has a knowledgeable staff that can guide you through your project and help you find just what you need.