How to Prep Your Attic for a Blown-In Insulation Upgrade

Upgrading your attic with blown-in insulation is one of the smartest moves you can make to improve your home’s energy efficiency, comfort, and even resale value. But before the insulation goes in, a little preparation goes a long way. At Custom Insulation Company, Inc., we want homeowners to get the most out of their investment—starting with a properly prepared attic.

Clear the Space

First things first: if your attic is used for storage, it’s time to clear it out. Blown-in insulation needs to be evenly distributed across the entire attic floor. Boxes, bins, or stored furniture will block coverage and reduce the insulation’s effectiveness. Remove all items before the installation team arrives, and consider finding a new storage solution if you plan to maximize your attic’s energy-saving potential.

Seal Air Leaks

Before any insulation is added, it’s crucial to seal up gaps, cracks, or openings around wiring, plumbing, or framing. These small leaks may seem minor, but they can lead to significant heat loss in winter and increased cooling costs in summer. Our team will typically perform a quick inspection and recommend sealing measures if needed, often using spray foam or caulking in key areas.

Check for Moisture Issues

Moisture and insulation do not mix. If your attic shows signs of leaks, condensation, or mold, those problems should be addressed before insulation is installed. Trapped moisture can reduce insulation performance and lead to long-term damage. If you're not sure what to look for, we can help identify potential issues during our initial assessment.

Inspect Ventilation

Proper attic ventilation helps regulate temperature and prevent moisture buildup. Before installing blown-in insulation, make sure that soffit vents, ridge vents, or gable vents are unobstructed. This keeps air circulating, which improves indoor air quality and helps your insulation work more efficiently.

Consider Baffles and Barriers

To keep insulation from blocking airflow, we often install baffles (also called rafter vents) near the eaves. These guide air from soffit vents into the attic. In some homes, insulation dams or barriers may also be added around light fixtures, chimneys, or access hatches to ensure safety and compliance with building codes.

Final Step: Schedule a Professional Assessment

Every home is different, and a professional eye can spot issues you might miss. At Custom Insulation Company, Inc., we offer thorough attic evaluations and will walk you through every step before installation. We’ll ensure your attic is prepped, safe, and ready for a successful blown-in insulation upgrade.

Ready to upgrade your insulation?

Give us a call or schedule your free attic inspection today. A more comfortable, energy-efficient home is just one project away—with Custom Insulation Company, Inc., it’s done right the first time.