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Stop paying to cool or heat the outdoors. Denison Insulation installs spray foam, attic, blown-in, crawl space, and wall insulation for homes and businesses across Denison and 11 surrounding communities - backed by free on-site estimates and no-pressure quotes.
Denison Insulation is a licensed Insulation Contractor based in Denison, TX, solving comfort and energy problems for homeowners and businesses across Grayson County and Southern Oklahoma. We offer 16 insulation services - from spray foam and blown-in to vapor barriers and retrofit work - covering every part of your home where heat and air are getting in or out. We serve 12 cities in the region, and every job starts with a free on-site estimate before any work begins.
High energy bills or drafty rooms? Spray foam seals air leaks and insulates in one step, giving you consistent comfort all year.
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Attic too hot in summer? Proper attic insulation keeps heat out of your living space and your electric bill manageable.
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Blown-in insulation fills every corner of your attic floor evenly - no gaps, no thin spots, no hot zones.
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Is your home losing heat in winter and cool air in summer? A full home insulation assessment finds where the losses are and fixes them.
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Old, wet, or pest-damaged insulation does more harm than good. We remove it safely before installing fresh material.
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Damp crawl space making your floors cold and your home musty? Crawl space insulation stops moisture and heat loss at the source.
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Exterior walls with little or no insulation turn every room near them into a draft zone. Wall insulation fixes that without a full renovation.
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Insulation slows heat - air sealing stops it. Sealing gaps around pipes, wires, and fixtures is the step most contractors skip.
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An uninsulated basement pulls heat away from your living space in winter and adds humidity in summer. We fix both.
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Closed-cell foam is the dense, moisture-resistant option for crawl spaces, exterior walls, and anywhere water is a concern.
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Open-cell foam fills interior wall cavities and attic spaces while dampening sound - a good fit for finished living areas.
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Commercial buildings lose energy fast without proper insulation. We work on warehouses, offices, and retail spaces across the region.
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Moisture rising from the soil under your home damages floors and air quality. A vapor barrier stops it before it starts.
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Proper vapor barrier installation protects your insulation, framing, and floors from the humidity that North Texas summers bring.
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Most attic heat loss goes through gaps, not just thin insulation. Attic air sealing addresses the leaks that new insulation alone can't fix.
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Older home with walls that were never insulated? Retrofit insulation adds coverage without tearing out finished drywall.
Learn MoreReach out by phone or through our contact form. We will ask a few basic questions about your home and schedule a free on-site visit at a time that works for you. We respond within 1 business day.
We come to your home, inspect the attic, crawl space, or walls, and measure what is there. Then we give you a written, itemized estimate - no pressure, no obligation. If your home does not need the work, we will tell you.
Once you approve the estimate, we schedule the job and complete it - typically in one day. Before we leave, we walk you through the finished work so you can see what was done and ask any questions.
We hold a current insulation contractor license through the Texas Department of Licensing and Regulation (TDLR) and carry general liability and workers compensation insurance on every project. Ask for our license number before we start - we will hand it over without hesitation.
Every estimate starts with an in-person look at your home - not a number we made up over the phone. We measure what is there, explain what we recommend, and leave you a written, itemized quote. You decide what happens next.
We are a locally owned business. We have been insulating homes in this part of North Texas since 2016 and we understand the older housing stock, the clay soil, and the hot summers that shape every insulation decision here.
When you call or fill out a form, someone from our office gets back to you within one business day. We give you a real timeline before the job starts and stick to it. No chasing us down, no unexplained delays.
Questions before you decide? Call (903) 415-9273 or send us a message.
"We had our attic done last spring and the difference on our electric bill that summer was real. Two of our rooms used to be noticeably hotter than the rest of the house - that is completely gone now. The crew was done in a single day and left the place clean."
- Sandra M., Sherman, TX - Attic Insulation
"Our crawl space had been damp and musty for years. They came out, gave us a straight explanation of what was going on, and got the vapor barrier and insulation installed within the week. No upsell, no runaround. The musty smell is gone and our floors feel warmer."
- James R., Pottsboro, TX - Crawl Space Insulation
"I called three contractors for spray foam quotes. Denison Insulation was the only one who actually came out and looked at the house before giving me a number. The estimate was written and itemized. The work was done on the day they said, and it came in at the price they quoted."
- Terry W., Durant, OK - Spray Foam Insulation
We respond within 1 business day. There is no obligation and no pressure. After you submit this form, someone from our office calls to schedule a free on-site estimate at your home. We take a look, tell you what we find, and give you a written quote before any work begins.
(903) 415-9273Denison Insulation is based in Denison, TX and serves 12 communities across North Texas and Southern Oklahoma, including Sherman, Pottsboro, Durant, and Ardmore. We offer same-week scheduling for most jobs and cover the full Grayson County region and beyond.
If you can see the wooden joists across your attic floor, your insulation is below the level recommended for North Texas. The U.S. Department of Energy sets R-value targets by climate zone - homes in our area need more than most older builds have.
Insulation slows heat transfer. It does not stop air from moving through gaps. Air sealing closes those openings - around pipes, wires, and fixtures - and is the step that eliminates drafts. The two work together, and skipping one limits the benefit of the other.
Moisture is insulation's enemy. In a humid climate like ours, wet insulation loses effectiveness and can grow mold. Closed-cell spray foam resists moisture directly. Blown-in materials work well when ventilation and vapor management are addressed first.
Yes, in most cases. Attic blown-in is completed in one day without touching your living space. Retrofit insulation can be added to existing walls without removing drywall. A contractor should assess the existing conditions before recommending an approach.
Open-cell foam is softer and less dense - good for interior walls and sound dampening. Closed-cell foam is denser, moisture-resistant, and adds structural strength - the better choice for crawl spaces, exterior walls, and anywhere water is a concern.
Homeowners who add qualifying insulation to an existing home may be eligible for a federal tax credit worth up to 30% of the material cost, up to $1,200 per year. This applies to insulation materials. See the IRS Energy Efficient Home Improvement Credit page for details and requirements.
More guidance on home energy efficiency is available from the U.S. Department of Energy Insulation Guide.
Denison Insulation is a licensed Insulation Contractor company based in Denison, TX, serving 12 communities across Grayson County and Southern Oklahoma since 2016.
We hold a current insulation contractor license issued by the Texas Department of Licensing and Regulation - the state body that oversees and enforces contractor standards in Texas. Our license and insurance information are available on request before any work begins.
Since 2016, we have completed insulation projects across all 16 services we offer, from spray foam and attic blown-in to wall insulation, crawl space vapor barriers and retrofit insulation in older homes.
Learn More About UsIf the insulation is wet, compressed, heavily settled, or was disturbed by pests, it needs to come out before anything new goes in. Layering new material on top of a problem makes the problem worse, not better.
They look at the space before quoting. They check for moisture, pest activity, and air leaks. They explain what they find in plain terms and give you a written price. If a contractor quotes you without visiting, that is a warning sign.
Ask the contractor to measure the depth in several spots before they leave and show you the results. Good installers document the coverage area, R-value achieved, and materials used. You should walk away with that information in writing.
For guidance on recommended insulation levels by climate zone, the ENERGY STAR Recommended Levels of Insulation page is a reliable starting point - or call us at (903) 415-9273 and we will tell you what your home actually needs.
Denison, TX is a city of roughly 24,000 to 25,000 people in Grayson County, situated just south of the Oklahoma border and about 75 miles north of Dallas. Denison was founded in 1872 as a railroad town, and many of its neighborhoods still have homes that are 80 to 100-plus years old. The city is perhaps best known as the birthplace of President Dwight D. Eisenhower, and the Eisenhower Birthplace State Historic Site remains one of the most recognized landmarks in the city.
Denison sits directly adjacent to Lake Texoma, one of the largest reservoirs in the United States, formed by Denison Dam on the Red River. Homes near the lake deal with elevated humidity and moisture exposure year-round - conditions that make proper insulation and vapor management more important, not less. The city's housing stock spans from late 19th-century Craftsman bungalows and Victorian-era homes in the historic district to ranch-style and brick-veneer subdivisions on the south and west sides of town.
The expansive clay soils throughout Grayson County shrink and swell with seasonal moisture changes - shifting foundations, cracking driveways, and opening small gaps in wall framing over time. Combined with summers that regularly push into the upper 90s and a cooling season that stretches from May through September, these are the conditions that shape every insulation decision we make for homes here. Whether your home is in one of the older downtown neighborhoods, near Denison Dam, or in a newer subdivision on the south side of town, Denison Insulation has worked in your area and understands what those homes need.
By appointment only, no walk-ins.
Call Denison Insulation today for a free on-site insulation estimate - no obligation, no pressure, just an honest look at what your home needs.