903 Spray Foam
Our Mission
Most homeowners who call us have already replaced the HVAC unit. They have caulked windows, added weatherstripping, and done everything the internet suggested. The bills stayed high anyway. Nine times out of ten, the insulation is the culprit nobody checked.
903 Spray Foam exists to diagnose that problem correctly and fix it with the right material for your specific building. Peter Fehr walks every property himself before a single recommendation is made. Our open-cell foam insulation installs are backed by USA-made materials and paired with spray foam insulation services that cover the full scope, from assessment to final cleanup.
The Real Problem
Standard fiberglass batts are rated for thermal resistance, not air sealing. Those are two different things, and that distinction is why so many Paris homes stay uncomfortable regardless of what is sitting between the studs. A batt slows conductive heat transfer but does nothing about the gaps around it. Electrical penetrations, irregular framing, settling over decades . All of it stays open.
Open-cell spray foam expands to fill every one of those paths. That is not a bonus feature. It is the core reason to call a spray foam insulation contractor in Paris, Texas who actually understands what the product does inside a real Northeast Texas wall assembly.
Understanding the Product
A lot of homeowners come to us asking about R-value, which is a fair starting point. Open-cell spray foam R-value lands between 3.5 and 3.7 per inch, which is lower than closed-cell on paper. That number, however, does not account for what open-cell foam insulation does that closed-cell cannot match at the same price point.
When weighing open-cell vs closed-cell spray foam, the decision usually comes down to application area and moisture exposure. Open-cell is the right answer for attics, interior walls, and rim joists in residential properties. Closed-cell earns its place in crawl spaces and moisture-prone commercial structures. 903 Spray Foam helps you make that call based on your actual building, not a default recommendation.
Everything You Need

Paris attics routinely hit 140 degrees by mid-morning in July, and that heat radiates through whatever sits below it regardless of R-value. Applying open-cell spray foam insulation directly to the underside of the roof deck changes that dynamic.
The attic stops being an unconditioned heat sink and starts behaving as part of the conditioned building envelope. Your system runs less, and the difference shows up on the first utility bill after installation through our spray foam insulation services.
With an open cell spray foam R-value ranging from 3.5 to 3.7 per inch, this insulation type delivers outstanding thermal resistance while remaining one of the most cost-effective options on the market.
With an open cell spray foam R-value ranging from 3.5 to 3.7 per inch, this insulation type delivers outstanding thermal resistance while remaining one of the most cost-effective options on the market.
For typical attic applications in Dallas and Plano homes, 6 inches of open cell insulation achieves approximately R-21—more than sufficient to dramatically reduce heat transfer and slash cooling costs during brutal Texas summers.

Electrical penetrations, shifted studs, compressed corners, framing that settled over decades. Older homes carry all of it, and standard batts never addressed any of it. Open-cell foam insulation is applied directly into those cavities and expands to fill the actual geometry of what is there, not the ideal geometry of a clean new frame.
The wall starts performing closer to its rated value under real conditions. For a spray foam insulation contractor working in Northeast Texas, this application is one of the highest-return upgrades available per square foot.
Unlike traditional batt insulation that leaves gaps around obstacles, open cell spray foam expands to fill every irregular space, corner, and void. It flows around pipes, electrical boxes, and framing members to create seamless coverage that eliminates thermal bridging and air leakage points.
This comprehensive seal is especially valuable in older homes throughout Paris and Greenville where settling and age have created numerous hidden gaps.
Unlike traditional batt insulation that leaves gaps around obstacles, open cell spray foam expands to fill every irregular space, corner, and void.

The rim joist runs along the top of your foundation wall, and in most Paris homes it is either bare or packed with a deteriorating batt that stopped performing years ago. Outside air enters directly through that gap into your floor system year-round.
Open-cell spray foam seals it completely in a single pass. Understanding the open cell spray foam R-value for this specific area helps size the install correctly, and 903 Spray Foam handles that calculation as part of every free property assessment in Lamar County.
The acoustic properties of open cell spray foam insulation are remarkable. Its soft, sponge-like structure absorbs sound waves effectively, dramatically reducing noise transmission between floors and from outside sources.
The acoustic properties of open cell spray foam insulation are remarkable. Its soft, sponge-like structure absorbs sound waves effectively, dramatically reducing noise transmission between floors and from outside sources.
Families in busy neighborhoods throughout the Dallas-Plano area particularly appreciate how open cell insulation creates a quieter, more peaceful indoor environment—whether it's traffic noise, barking dogs, or just normal household sounds.
Why Choose Us?
Peter Fehr Assesses Every Property in Person: Before any open-cell spray foam is recommended, the owner walks your property himself and identifies exactly where conditioned air is being lost.
No Subcontractors on Any Job: The team that quoted the project is the team that installs it. Every open-cell foam insulation job in Lamar County is completed directly by 903 Spray Foam.
BBB-Accredited With an A- Rating: Earned within the first year of operation, that rating reflects how we handle every spray foam insulation services project in Paris, TX and the surrounding areas. Honestly, professionally, and without shortcuts.
USA-Made Materials Every Time: We do not downgrade to cheaper imported foam to protect margin. Every open-cell spray foam insulation install uses domestic product rated for Northeast Texas heat and humidity.
One Price, No Surprises: The quote from the walkthrough is what appears on the invoice. Any scope change gets discussed with you before 903 Spray Foam touches anything additional.
How we work

Every open-cell spray foam insulation project starts with a free consultation. We evaluate your Paris, TX property, identify problem areas, and determine whether open cell foam insulation fits your needs and budget before recommending anything. Nothing moves forward until we fully understand your specific situation.

After the assessment, we build a detailed plan covering treatment areas, recommended thickness for optimal open-cell spray foam R-value performance, timeline, and transparent pricing. Before our spray foam insulation services begin at your Paris, Texas property, you know exactly what to expect with zero hidden fees.

Our technicians arrive on time, protect your belongings, and apply open-cell foam with precision throughout your Paris, TX home. As a trusted spray foam insulation contractor in Northeast Texas, we keep work areas clean and complete most residential projects within one to two days.

Before leaving, we perform a thorough inspection confirming your open-cell insulation meets our standards for coverage and thickness. Our spray foam insulation services do not stop at the door. The 903 Spray Foam team stays available for questions and support long after the job is done.
Testimonials

Shavin Patel

Had a great experience with 903 Spray Foam!! They were professional, showed up on time, and did quality work. The insulation looks great and has already made a noticeable difference. Would definitely use them again and recommend to others.

Stephanie Logue

Very pleased with Peter’s work. Highly recommend!

Hannah Montgomery

Very professional consult compared to other quotes. Did a great job replacing the insulation in our 100+ year old house and we can already feel the difference! Highly recommend!
Proudly Recognized & Trusted
Better Business Bureau Accredited - As a BBB Accredited Business, 903 Spray Foam upholds the highest standards of integrity, customer service, and professionalism. Our clients know they’re working with a team that’s trustworthy, responsive, and committed to doing things right.
Member of the Paris-Lamar County Chamber of Commerce - We’re proud to be an active member of the Paris-Lamar County Chamber of Commerce, supporting local businesses and contributing to the growth and success of our community here in Sulphur Springs, Texas.
Best of BusinessRate 2026 Award Winner - Recognized with the Best of BusinessRate 2026 Award, 903 Spray Foam stands out for delivering exceptional service, quality workmanship, and consistent customer satisfaction. This recognition reflects our commitment to excellence and the trust we’ve built with homeowners and businesses throughout Sulphur Springs, Texas.
Call us today or schedule your consultation online.

Still Not Sure?
Open-cell spray foam is a soft, expanding insulation material that cures as a continuous air barrier across every surface it contacts, sealing gaps and voids that rigid batts and blown insulation physically cannot reach. Unlike fiberglass or cellulose, it addresses both thermal resistance and air infiltration in a single application, which is why it consistently outperforms standard insulation in older Paris, TX homes.
Open-cell spray foam R-value sits between 3.5 and 3.7 per inch, which is lower than closed-cell on paper but does not reflect the full performance picture. The continuous air seal open-cell creates eliminates the infiltration losses that reduce the real-world performance of higher-rated materials, making it highly effective for the heat and humidity conditions Paris properties deal with year-round.
The open-cell vs closed-cell spray foam decision comes down to where the product is being applied and how much moisture exposure that area receives. Open-cell is the right fit for attics, interior walls, and rim joists in Paris residential properties, while closed-cell is better suited for crawl spaces, basements, and commercial structures where moisture resistance and higher R-value per inch are the priority.
Open-cell foam insulation performs best in attic roof deck applications, exterior wall cavities, and rim joist areas where air infiltration is the primary driver of energy loss in older Lamar County homes. Attic application in particular tends to produce the most immediate and measurable drop in cooling costs once the foam converts the attic from an unconditioned heat sink into part of the building envelope.
Most residential open-cell spray foam insulation projects in Lamar County wrap up within one to two days depending on the square footage and number of application areas involved. 903 Spray Foam provides a written project timeline at the free consultation so there are no scheduling surprises once work begins.
Yes, you will need to vacate during the application and for a few hours after while the foam finishes curing and any residual odor dissipates from the space. Once fully cured, open cell spray foam is non-toxic and actively improves indoor air quality by sealing out the allergens, pollutants, and humid outside air that were previously entering through gaps in the building envelope.
903 Spray Foam delivers spray foam insulation services throughout Northeast Texas, including Greenville, Sulphur Springs, Plano, Dallas, and Sumner, TX where the company is based. If your property falls outside those listed markets, call (903) 609-5907 to confirm whether your location falls within the current service range. Check locations we serve here.
In most cases involving deteriorated, compressed, or moisture-damaged material, yes, the existing insulation needs to be removed before open cell foam insulation is installed. Layering new foam over a compromised substrate undermines the performance of the entire system, and 903 Spray Foam includes complete insulation removal as a standalone service for Paris, TX properties that need a full reset first.
Open-cell spray foam insulation works well in commercial spaces where interior air sealing, thermal performance, and acoustic control are the main objectives, such as climate-controlled offices and multi-unit buildings across Lamar County. For metal structures, warehouses, or any commercial application with direct moisture exposure, our spray foam insulation contractor typically recommends closed-cell foam based on its higher R-value and superior moisture resistance.
Federal insulation tax credits of up to $1,200 may still be available to qualifying Paris homeowners who upgrade through a certified spray foam insulation contractor before the credit window closes. Call 903 Spray Foam at (903) 609-5907 to find out whether your property and project scope qualify before that deadline passes.
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