Drafty rooms in January, stuffy bedrooms in July, and utility bills that keep climbing. Sound familiar? Peninsula Insulation, LLC helps Annapolis homeowners and business owners take back control of indoor comfort with the high-performance spray foam insulation Annapolis calls for, plus a full lineup of insulation options. Whether you own a centuries-old colonial near the waterfront or run a busy commercial space off Route 50, our professional insulation services in Annapolis are built around the architecture, humidity, and coastal weather that shape this community. Every project starts with a free quote, so you will know exactly what your property needs before any work begins.
Living between the Severn and South Rivers means your building battles salt air, heavy humidity, and temperature swings that hit hard in both directions. See what local customers say about our insulation services and experience. Older houses throughout the Historic District lose heated and cooled air through uninsulated attics, leaky rim joists, and damp crawlspaces, while newer construction often ships with builder-grade insulation that barely meets code. Our team looks past the surface to find where your property actually loses energy, then builds a plan around those findings. The result is a building that holds its temperature, breathes cleaner air, and costs less to run month after month.




The owner of a centuries-old home near downtown Annapolis called us about rooms that never seemed to hold heat and second-floor drafts that no amount of weatherstripping could fix. After a full assessment, our crew applied closed-cell spray foam across the attic plane and sealed the hidden leaks around top plates and chases. The historic character of the house stayed untouched, but the results were immediate: steadier temperatures on every floor and monthly energy bills that dropped noticeably. The home kept its historic charm and finally gained modern-day comfort.
Parole, Edgewater, Arnold, Severna Park, Crownsville, Riva, Davidsonville, Harwood, Pasadena, Deale, Shady Side, Galesville, Mayo
Anne Arundel County. Our reach extends well beyond the city lines as a trusted insulation company Anne Arundel County relies on, from the Annapolis Peninsula down to the southern waterfront communities.
A historic homeowner in downtown Annapolis was struggling with drafty rooms and high utility costs, particularly in the upper levels of their centuries-old property. Peninsula Insulation, LLC was contracted to perform a comprehensive insulation upgrade. By carefully applying closed-cell spray foam to the attic and air sealing critical leakage points, we were able to significantly improve the home's thermal barrier without compromising its historic integrity. The result was a more comfortable and consistent indoor temperature year-round and a dramatic decrease in the homeowner's monthly energy expenses, preserving a piece of Annapolis history while enhancing its modern-day livability.
Your free quote is one call or click away. Reach out to Peninsula Insulation, LLC, the insulation company Annapolis, MD turns to for straight answers and lasting results, and schedule your walkthrough. We will show you exactly where your property is losing energy and what it takes to fix it. Better comfort and lower bills start with a conversation, and the estimate will not cost you a thing.
Annapolis sits in a humid, coastal climate with hot summers and chilly winters, so closed-cell spray foam is often the strongest performer. Its high R-value and resistance to moisture make it well suited to handle bay-area humidity year after year.
Watch for drafty rooms, floors that feel like different seasons, rising utility bills, and ice dams along the roofline. A professional energy audit will show exactly where your home is leaking money.
Yes. Once cured, spray foam is inert and does not give off fumes or shed particles into your air. Our crew follows strict safety protocols during installation and until the material has fully cured.
It will. Both open-cell and closed-cell foam absorb sound waves, so traffic, lawn equipment, and noisy neighbors become far less noticeable indoors.
Encapsulation seals the crawlspace with a heavy-duty vapor barrier and insulation to keep ground moisture out. In a waterfront city like Annapolis, that means less mold risk, cleaner air, and better whole-house efficiency.
Fiberglass batts are within reach for many handy homeowners, but spray foam is not a DIY job. It demands specialized equipment, precise mixing, and trained applicators so the material cures correctly and safely.
Properly installed spray foam holds its shape and performance for the life of the building. It will not sag, settle, or break down the way some traditional materials do.
Open-cell foam is softer and lighter with a lower R-value per inch, and it excels at blocking air and softening sound. Closed-cell foam is denser with a higher R-value per inch and doubles as a vapor barrier, which makes it the right call for moisture-prone areas.
Attic insulation blocks the heat building up under your roof from radiating down into living spaces, so your air conditioner runs less. The EPA's ENERGY STAR program estimates that air sealing plus added insulation saves homeowners an average of 15% on heating and cooling costs.
Air sealing closes the gaps around windows, doors, pipes, and wiring where conditioned air escapes. Paired with insulation, it completes the thermal envelope so your heating and cooling dollars stay inside where they belong.