Dense-pack walls
Help your existing walls hold their comfort.
Serving Macomb, Oakland, Wayne & St. Clair counties

Help your existing walls hold their comfort.
Thermaltech installs dense-pack cellulose in suitable wall cavities. For existing homes, exterior access may allow us to fill wall cavities without drilling inside finished rooms, depending on siding, framing and site conditions.
- Existing wall insulation upgrades with dense-pack cellulose.
- Exterior access where siding and wall conditions allow.
- Interior access when appropriate for the project.
- Bay window and other accessible cavity projects assessed individually.
Will you need to make holes inside my home?
Not always. Exterior access can be suitable for some siding and wall assemblies. We review the access method and restoration responsibilities before work begins.
Serving Roseville, Sterling Heights, Shelby Township, St. Clair Shores, Warren, Detroit, Pontiac, Algonac and nearby communities. Contact us to confirm availability for your location.
See more actual Thermaltech project photos →Explore our services
Let’s start your project.
Tell us your city and what you need insulated. Submit your request here, and our team will follow up to discuss your project.
586-201-7645
Prefer to talk? Give us a call.
Senior & military discounts available.
Ask about eligibility when discussing your estimate.