Installing Blanket Insulation in New Construction vs. Retrofits: What’s the Difference?

Whether you're building a new home or upgrading an older one, proper insulation is one of the smartest investments you can make. Blanket insulation—commonly available in batts or rolls—is a popular choice for its affordability, ease of installation, and reliable performance. But how and when it's installed can vary significantly depending on whether you're working with new construction or completing a retrofit. Let’s break down the key differences.

In new construction, the process is typically more straightforward. Since the walls, ceilings, and floors are open and accessible before drywall is installed, our team can fit insulation seamlessly into place with minimal disruption. This allows us to ensure complete coverage, precise cuts, and optimal R-value performance. It's faster, cleaner, and highly cost-effective during the early stages of a build. If you're planning a custom home or commercial project, installing blanket insulation early ensures long-term energy efficiency and comfort from day one.

Retrofits, on the other hand, require a more customized approach. In existing buildings, we're working around finished walls, existing utilities, and sometimes outdated or improperly installed insulation. Access can be limited, and extra care must be taken to minimize disruption while improving thermal performance. Despite the added complexity, retrofitting with blanket insulation is still a strong option—especially in attics, crawlspaces, and unfinished basements where access is easier and the energy savings can be significant.

At Custom Insulation Company, Inc., we bring decades of experience to both types of projects. Whether you’re breaking ground or breathing new life into an older property, our team ensures the job is done right—with attention to detail, performance, and long-term value.

Not sure which approach is best for your project? We’re happy to help. Contact us today for a free consultation and let’s talk about how blanket insulation can work for you.