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Professional Insulation Services in Annapolis, MD

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.

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Insulation Annapolis Properties Depend On

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.

Spray Foam Insulation Annapolis, MD: Our Complete Range of Insulation Services

Open Cell Spray Foam | Peninsula Insulation, LLC

Open Cell Spray Foam

A light, flexible foam that fills walls, attics, and crawlspaces with an airtight seal. It also softens noise transfer between rooms and supports healthier indoor air.
Closed Cell Spray Foam | Peninsula Insulation, LLC

Closed Cell Spray Foam

Dense and rigid, this foam delivers top-tier thermal resistance per inch and adds structural strength. It blocks air and moisture alike, making it a smart choice for foundations and new construction.
Agricultural Insulation | Peninsula Insulation, LLC

Agricultural Insulation

Barns, poultry houses, and other farm structures hold steadier temperatures with our agricultural applications, protecting livestock and feed while cutting condensation and wasted energy.
Residential Insulation | Peninsula Insulation, LLC

Residential Insulation

Our home insulation work is tuned to your house, your budget, and your family's comfort, with lower monthly bills and cleaner air as the goal.
Commercial Insulation | Peninsula Insulation, LLC

Commercial Insulation

From retail shops to warehouses, we help commercial properties trim operating costs and keep employees and customers comfortable in every season.
Blown-In Insulation | Peninsula Insulation, LLC

Blown-In Insulation

Loose-fill material settles into attics and odd-shaped wall cavities, wrapping hard-to-reach gaps in a continuous layer of thermal protection.
Fiberglass Insulation | Peninsula Insulation, LLC

Fiberglass Insulation

This familiar, budget-friendly material remains a dependable way to raise thermal performance in attics, walls, and crawlspaces.
Mineral Wool Insulation | Peninsula Insulation, LLC

Mineral wool Insulation

Fire resistance and sound control lead the benefit list here, backed by long-lasting durability across many applications.
Air Sealing | Peninsula Insulation, LLC

Air Sealing

We track down leaks around windows, doors, and penetrations, then close them up so your insulation can actually do its job.
Foundation Insulation | Peninsula Insulation, LLC

Foundation Insulation

Insulating below grade guards against moisture intrusion and energy loss, which pays off in a drier, more comfortable space above it.
New Construction Insulation | Peninsula Insulation, LLC

New Construction Insulation

We partner with builders to insulate new homes and commercial buildings correctly from day one, setting them up for decades of efficient performance.
Thermal Barrier System | Peninsula Insulation, LLC

Thermal Barrier System

Code-required fire protection applied over spray foam keeps your property safe, compliant, and protected.
Crawlspace Encapsulation | Peninsula Insulation, LLC

Crawlspace Encapsulation

Sealing and insulating a damp crawlspace turns it into a clean, dry zone, and the benefits show up as better air quality and lower humidity throughout the house.
Residential Spray Foam Insulation | Peninsula Insulation, LLC

Residential Spray Foam Insulation

Homeowners choose spray foam to shut down drafts, lock in conditioned air, and enjoy steady temperatures in every season at a lower cost.
Commercial Spray Foam Insulation | Peninsula Insulation, LLC

Commercial Spray Foam Insulation

Reinforce your building envelope with foam that cuts energy waste and stands up to years of wear.
Pole Barn Insulation scaled

Pole Barn Insulation

Annapolis property owners count on our crew for fast, tidy pole barn work that protects equipment and livestock with minimal disruption to your operation.

Why Peninsula Insulation Stands Out

Expert Insulation Solutions

Certified Installation Workmanship

Our trained installers treat every job like it is going into their own home.
Energy Efficiency Focus

Energy-First Approach

Every recommendation is made with your utility bills in mind.
Quality Materials

Local Weather Know-How

We understand Chesapeake humidity, coastal storms, and what they do to a building envelope.
Customer Satisfaction Guarantee

Complete Project Management

We install products we trust, never the cheapest option on the shelf.
Insulation Services in Annapolis, MD

Exploring the Charm of Annapolis

U.S. Naval Academy

U.S. Naval Academy

Home to thousands of midshipmen, this storied campus along the Severn River features striking architecture, a respected museum, and guided tours open to the public.
Annapolis Historic District

Annapolis Historic District

A National Historic Landmark District packed with 18th-century brick homes, boutique shops, and waterfront restaurants. Walking these cobblestone streets feels like stepping into the 1700s.
Maryland State House

Maryland State House

The oldest state capitol still in active legislative use, and the very building where Congress ratified the Treaty of Paris in 1784.
William Paca House and Garden

William Paca House and Garden

A restored Georgian mansion with two acres of terraced gardens, offering a window into colonial life for one of Maryland's signers of the Declaration of Independence.
Quiet Waters Park

Quiet Waters Park

Hundreds of acres of walking and biking trails, art galleries, gardens, and calm South River views just minutes from downtown.
Annapolis Maritime Museum

Annapolis Maritime Museum

Set on the shores of Back Creek, this museum preserves the city's oyster-dredging and boatbuilding heritage through exhibits, concerts, and waterfront programs
Insulation Company in Annapolis, MD

Why Choose Peninsula Insulation, LLC?

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.

Serving Areas:

Parole, Edgewater, Arnold, Severna Park, Crownsville, Riva, Davidsonville, Harwood, Pasadena, Deale, Shady Side, Galesville, Mayo

Counties Served:

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.

Mini Case Study:

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.

What your neighbors in Annapolis, MD
say about our Spray Foam Insulation services

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Lynch profile picture
Lynch
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Will was extremely professional and flexible throughout the process. He was able to work around our constraints, provided multiple estimates to suit our needs, and worked around our schedule. He even referred a great electrician to help prepare the site for insulation. During the work, the Peninsula team was fast, professional, and left the aire clean and orderly when they were finished. All in all, a great experience!
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Andrew Milham profile picture
Andrew Milham
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Had my new pole barn sprayed with foam insulation. Fast, friendly, awesome service. Will absolutely recommend peninsula insulation to anyone that’s looking! Thank you again!
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Ryan Maisel profile picture
Ryan Maisel
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Will from peninsula did an excellent job sealing our attic. Would definitely recommend them for your job
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Mike and Carmen Nemeth profile picture
Mike and Carmen Nemeth
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Couldn't be more pleased with the outcome of this project, which included removal of the almost 30 year old R-13 insulation, replacing a few broken baffles, sealing all ceiling penetrations, blowing-in new R-49 insulation, and installing a new (and much needed) attic stair access cover. Everything went as planned, on schedule, and without any problems. Wil's attention to detail, to include the cleanup after the job were much appreciated. We highly recommend Peninsula Insulation!
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Renee Lausen profile picture
Renee Lausen
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Peninsula Insulation did amazing work in my crawlspace and attic. My electric bill has decreased. Very professional. Highly recommend.
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Pam Herr profile picture
Pam Herr
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Very professional and fair
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Mack Schwarz profile picture
Mack Schwarz
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Very efficient work! Will was professional, knowledgeable and straight forward with what is best for the situation you’re in. Highly recommend.
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Nora Humm profile picture
Nora Humm
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I highly recommend Wil and Peninsula Insulation. They are very responsive, professional and did a great job at a very reasonable price.
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Chris Atkinson profile picture
Chris Atkinson
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Good pricing, attention to detail, great communication throughout the whole process, would definitely recommend peninsula Insulation for your next project

Ready to Upgrade Your Insulation?

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.

Answers to Your Questions About Insulation in Annapolis

What type of insulation is best for the climate in Annapolis?

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.

How can I tell if my historic Annapolis home needs new insulation? 

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.

Is spray foam insulation safe for my family and pets?

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.

Will new insulation help reduce noise from outside?

It will. Both open-cell and closed-cell foam absorb sound waves, so traffic, lawn equipment, and noisy neighbors become far less noticeable indoors.

What is crawlspace encapsulation and why is it important in Annapolis? 

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.

Can I install insulation myself?

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.

How long does spray foam insulation last?

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.

What is the difference between open-cell and closed-cell spray foam?

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.

Will insulating my attic help with my high cooling bills in the summer?

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.

How does air sealing work with insulation?

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.

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