Hire the Best Spray Foam Insulation Contractors in Portsmouth, NH on HomeAdvisor. Compare Homeowner Reviews from 5 Top Portsmouth Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Portsmouth, New Hampshire Average. $2,727. Typical Range. $1,000 - $7,800. Low End - High End. $700 - …From small parts to spray foam rigs, IDI is your trusted wholesale spray foam insulation supplier. Explore our products and solutions to find everything you need for your insulation business. Learn more about spray foam. See all SPF Equipment Brands we carry Contact Us. Or Call us at 855-941-1132.We're spray foam insulation contractors in Kansas City. Spray foam provides effective insulation and an efficient sealant. Call today and request a quote. ... Insulation costs by clicking the image below! Calculate Savings. Accept Quote. Request Quote 14324 W. 96th Terrace. Lenexa, KS 66215 (913) 281-2250 Kansas (913) 948-9837 FAX ...Top 10 Best Spray Foam Insulation Contractors in Waco, TX - March 2024 - Yelp - Lone Star Insulation, National Insulation of Waco, B & W Insulation, Morales Drywall & Insulation, SP Construction, Heart Of Texas Insulation, Thermo Dynamic Insulation - Waco, Bulldog Spray Foam Solutions, Foam Tex Insulation, Buffalo Foam Spray … Install Blown-In Insulation. $665 - $1,306. Install Spray Foam Insulation. $2,000 - $2,519. View other insulation costs for Scottsdale. Kraken Bond Fastcoat Spray Foam Insulation - Closed Cell Foam Spray Polyurethane Spray Foam Heat Insulation&Acoustic Spray Self Expanding Foam 20 Board Feet Gun/Cleaner NOT Included | 1 Pack. 4.0 out of 5 stars. 518. 100+ bought in past month. $23.99 $ 23. 99. $21.59 with Subscribe & Save discount. Install Blown-In Insulation. $736 - $1,779. Install Spray Foam Insulation. $752 - $2,860. View other insulation costs for Miami. Compared to other forms of insulation, closed cell spray foam has more pros than cons: Pros: Fast installation; Best R-value per inch; ... Foam costs about $.15 per R-value per one square foot. So, if it costs $4,000 to insulate an entire house in fiberglass, it would cost a minimum of $12,000 to spray in closed cell foam. ...Foam insulation cost (open cell spray foam insulation): Open cell spray foam insulation ranges from $0.70 to $1.00 per board foot. This type of insulation typically expands to about 3-inches per layer. Most commonly, it has an R-value of 3.5 to 3.6 per inch which means a 3-inch layer has an R-value of approximately 10.5 to 11. Spray Foam Insulation. Spray foam insulation is the biggest innovation in the insulation industry since the introduction of fiberglass in the 1950s. Spray foam insulation allows us to create more energy-efficient and comfortable homes, cutting homeowners’ heating and cooling costs. Spray foam insulation can be installed to fill gaps in walls ... Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in El Paso, Texas ranges from $0.90 to $1.40 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and attics typically need ... Simple – Tiger Foam kits are designed for easy use, you get the results you expect from the very first time you spray. Simple instructions, toll free support, how-to videos, and 100% guaranteed against defects. Extremely High R Value – Every 1 inch of cured sprayfoam gives you an R value of 7.0. Does Not – contain CFC’s, VOC’s, PENTA ... The average cost of crawl space insulation installation will be $0.30 – $2.50 per sq.ft. for materials and $0.60 – $1.30 per sq.ft. for labor. These costs will vary greatly depending on several factors discussed in this article, along with the type of crawl space insulation you choose. Crawl Space Insulation Costs. Basic.Spray foam insulation has gained popularity in recent years due to its energy efficiency and ability to create an airtight seal. However, like any other home improvement project, i...Picture-Frame First. Before filling the wall cavity, spray the perimeter with a 1/2-in. layer, which will expand to a 1-in. layer. These layers are called “lifts.”. This will ensure that the foam penetrates any voids where the studs meet the sheathing. This also reduces the risk of bulges in the sheathing.Hire the Best Spray Foam Insulation Contractors in Katy, TX on HomeAdvisor. Compare Homeowner Reviews from 19 Top Katy Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Katy, Texas Average. $2,590. Typical Range. $750 - $2,590. Low End - High End. $700 - $6,000. Learn more Costs for ...Hire the Best Spray Foam Insulation Contractors in San Antonio, TX on HomeAdvisor. Compare Homeowner Reviews from 18 Top San Antonio Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? San Antonio, Texas Average. $2,309. Typical Range. $1,377 - $3,475. Low End - High End. …With closed-cell spray insulation, the tiny bubbles are encapsulated, producing a more sturdy and rigid layer of foam. This helps if you need extra support along the walls and ceilings. Closed-cell foam is usually water-resistant. On average, it costs $1 to $1.50(CAD 1.25 to CAD 1.90) per board foot. Is Spray Foam Insulation Worth It? …Find out how much spray foam insulation costs for your home based on the size, type, and installation method. Compare prices for basic, better, and best levels of … Overall Rating: Orlando Insulation Contractors are rated 4.9 out of 5 based on 371 reviews of 371 pros. The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. Spray Foam Insulation Costs. Most insulation contractors calculate the costs of spray foam using the board foot. The best way to figure out how much you will need is to multiply the space by the price per inch of insulation. Measured as: square foot x $/inch of insulation per sq.ft. The average cost of spray foam insulation can range from $1.00 ...Spray-on solar panels could change the way we think about solar power. Learn all about spray-on solar panels at HowStuffWorks. Advertisement Renewable energy sources are a hot topi...Average material costs for these are $0.35 and $0.52 per square foot respectively, or $35 and $52 per 100 square feet of wall space. Foam board insulation is generally used on the surface of block ...Nov 28, 2023 · There are two types of spray foam insulation: open-cell and closed-cell. Open-cell is the most affordable, but it doesn't do a great job of resisting moisture. Closed-cell costs a bit more, but it offers a better moisture barrier than open-cell. Typical spray foam insulation costs range from $2 to $5 per square foot, depending on the type you ... A 2-lb spray foam insulation set = $2,000.00. Take 2,000 and divide it by 4,000 square feet (sprayed at 1-inch thickness) = 50 cents per square foot/inch (raw material cost). Example 2: A 3-lb spray foam insulation set. The yield is 3,000 square feet, sprayed at 1-inch thickness, and an R-value of 7. 2,000 divided by 3,000 square feet, assumed ...Picture-Frame First. Before filling the wall cavity, spray the perimeter with a 1/2-in. layer, which will expand to a 1-in. layer. These layers are called “lifts.”. This will ensure that the foam penetrates any voids where the studs meet the sheathing. This also reduces the risk of bulges in the sheathing. How much does a Spray Foam Insulation cost? A typical price for a Spray Foam Insulation is $13 but can range from approximately $4.38 to $826. Nov 6, 2023 ... Spray foam insulation is worth having because its benefits outweigh the disadvantages. Foam saves a lot of energy and keeps the house well- ...Hire the Best Spray Foam Insulation Contractors in Bronx, NY on HomeAdvisor. Compare Homeowner Reviews from 5 Top Bronx Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Bronx, New York Average. $2,594. Typical Range. $0 - $3,542. Low End - High End. $800 - $7,000. Learn more …How Much Does Spray Foam Insulation Cost? In general, closed-cell polyurethane foam costs between $1.00 and $1.50 per board foot. Open-cell polyurethane foam is slightly less expensive at $0.60 to $1.00 per board foot.Our closed-cell products have R-values ranging from 6.7” to 7” per inch of material. Long story short: Spray foam insulation increases energy efficiency over the long term and prevents energy from skedaddling out through the structure’s exterior walls. When it comes to insulating and energy savings, spray foam can represent a 30% to 50% ...Items that make good heat insulators include fiberglass, air, iron fibers, Polystyrene foam and thin plastic films, according to scientists at the Argonne National Laboratory. Some...Mar 23, 2021 ... Spray foam insulation costs between $.40 and $2.23 per board foot – a one-inch thick layer of foam in a one-square-foot area.When it comes to insulation, spray foam is one of the most effective and efficient materials available. It can help reduce energy costs, improve air quality, and provide a more com...Jun 22, 2023 ... THE OVERALL COST. The average cost of installing spray foam in your home is $2,376. This varies based on the following factors: ... For a 200 ...Hire the Best Spray Foam Insulation Contractors in Lorain, OH on HomeAdvisor. Compare Homeowner Reviews from 5 Top Lorain Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Lorain, Ohio Average. $1,781. Typical Range. $1,076 - $1,781. Low End - High End. $550 - $4,600. Learn more …However, the individual components that make up the foam can be quite harmful if mishandled; the respiratory system, skin, and eyes can become irritated. For these reasons, Durham Spray Foam Insulation highly recommends that you contact us for such professional services. Call (919) 822-8403. DIY Spray Foam Insulation.Advertisement Follow these steps to remove coffee stains from Synthetic Carpet, Wool Carpet and Foam Rubber: If the stain remains: Advertisement Please copy/paste the following tex...Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in Portland, Oregon ranges from $1.10 to $1.70 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and attics …Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in Longmont, Colorado ranges from $1.10 to $1.60 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and …Froth-Pak 650 Closed Cell Spray Foam Insulation Kit, 15 ft Hose, 2 Part, Polyurethane, Yields Up to 650 Board Feet, Improved Low GWP Formula. Insulates Cavities, Penetrations & Gaps Up to 2" Thick - Amazon.com ... Shipping cost, delivery date, and order total (including tax) shown at checkout. Add to Cart. Buy Now . Enhancements …Multiply this number by the area, which will determine the number of board feet that will be filled with either spray foam or fiberglass insulation. The cost of spray foam insulation for filling a ... One of the main benefits of spray foam insulation is its ability to provide substantial energy savings. By preventing air leakage and reducing heat transfer, this type of insulation can help to lower your heating and cooling costs significantly. In fact, studies have shown that homes with spray foam insulation can achieve energy savings of up ... Anyone who's been to the ocean has probably seen the foamy white stuff that clings to the sand after a wave breaks and recedes, but what the heck causes that bubbly foam? Advertise... Install Blown-In Insulation. $665 - $1,306. Install Spray Foam Insulation. $2,000 - $2,519. View other insulation costs for Scottsdale. Install Blown-In Insulation. $1,574 - $3,187. Install Spray Foam Insulation. $1,066 - $4,500. View other insulation costs for San Jose. Picture-Frame First. Before filling the wall cavity, spray the perimeter with a 1/2-in. layer, which will expand to a 1-in. layer. These layers are called “lifts.”. This will ensure that the foam penetrates any voids where the studs meet the sheathing. This also reduces the risk of bulges in the sheathing.The average closed cell spray foam cost is $1.45 per board foot. For 300 board feet, it will cost $435 to insulate this wall with closed cell spray foam. [300 bf x $1.45 per bf = $435] The average open cell spray foam cost is $0.50 per board foot. For 450 board feet, it will cost $225 to insulate this wall with open cell spray foam.Feb 16, 2010 · Spray Foam Info Starting a new build (1 1/2 basement walkout), all 2x6 exterior walls w/ brick veneer in CZ3. Above grade, would like to do spray foam in 2x6 walls, 1/2" or 1" of rigid foam board on the exterior, and a 1" air gap. Will this require a house wrap or can I do w/o the rigid foam and go with a housewrap? Learn how spray foam insulation can improve your home's energy efficiency, soundproofing, and moisture resistance. Find out the average cost range, factors affecting the price, and tips for hiring a professional installer. See moreHover Image to Zoom. $ 1082 78. $181.00 /mo† suggested payments with 6 months† financing Apply Now. Froth-Pak™ Insulation Spray Foam Kit 650 yields 650 board ft. Contains no ozone-depleting chemicals or HFCs. Polyurethane foam kit fills cavities, cracks & expansion joints. View More Details.Spray Foam Insulation Cost Guide offers cost estimates on Spray Foam Insulation in Concord. Get accurate prices to Spray Foam Insulation in Concord for 2024 ...Choose Australian Spray Foam Insulation — the specialists in draft-free, dust-free, quiet homes and buildings. 2. Save Energy. You can reduce your heating and cooling by as much as 50%, with a total reduction of heating and air conditioning tonnage by as much as 40% without the loss of efficiency or comfort. ...Guide to Spray Foam Insulation Costs. "The spray foam insulation cost is calculated using the board foot. If you want to determine how much you need, you have to multiply the space that you want insulated by the price per inch of insulation. Measured as: square foot x $/inch of insulation per sq.ft. We can also give you three simple steps on ...Learn how spray foam insulation can improve your home's energy efficiency, soundproofing, and moisture resistance. Find out the average cost range, factors affecting the price, and tips for hiring a professional installer. See moreNov 20, 2023 ... As our numbers show in 2024 average cost that homeowners paid for spray foam insulation installation in Citrus county is between $2,113.00 and ...Hire the Best Spray Foam Insulation Contractors in Tampa, FL on HomeAdvisor. Compare Homeowner Reviews from 13 Top Tampa Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Tampa, Florida Average. $2,527. Typical Range. $1,512 - $4,333. Low End - High End. $700 - $6,000. …The Cost of Crawl Space Insulation. Expect to pay a pro $3.25 to about $5.00 per square foot to fully insulate a crawlspace using two or three types of insulation. An average price of crawlspace insulation …Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in New Orleans, Louisiana ranges from $1.00 to $1.50 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and attics ...As an example, spray foam insulation can add around 10,000 GBP in value. Plus, there are a lot of savings to realize with spray foam insulation. For example, you will save up to 50% on your monthly energy costs and the spray foam insulation installation will pay for itself anywhere between one and three years after it was installed.Learn how spray foam insulation works, the types of spray foam, the pros and cons, and the cost of installing it. Find out how much spray foam insulation costs per …Aug 18, 2022 · The national average cost to fully insulate a home with spray foam is $10,000 to $30,000. Most homeowners spend around $20,000 on a mixture of open and closed cell insulation 6 inches thick in an existing 2,000 sq.ft. home. This project’s low cost is around $7,000 for 7 inches of open cell foam covering the attic floor. The application of spray foam insulation can be messy, and excess foam may need to be removed manually. Costs of Spray Foam Insulation. The installed cost of spray foam insulation varies, with an average cost of $1.25 - $4.50 per square foot. The overall size of your area will determine the total cost, as larger spaces are more …Jan 29, 2014 ... Spray Foam Insulation Costs ; Cement fiber siding, $4.50 to $9 ; Stone siding, $15 to $30 ; Granite countertop, $60 to $100 ; Shingles, tear-off & ...Impressive Cost Efficiency: With its superior insulating properties, spray foam can significantly cut down monthly energy bills, offering substantial savings in the long run. Healthier Indoor Ambience: By resisting mold, fungus, and bacteria, spray foam insulation promotes a cleaner, healthier living environment, safeguarding your well-being. Install Blown-In Insulation. $1,366 - $3,455. Install Spray Foam Insulation. $1,900 - $4,200. View other insulation costs for Los Angeles. Hydrogen peroxide is something that is used to clean cuts. Have you ever wondered why it foams when placed on a cut? Learn about hydrogen peroxide. Advertisement Hydrogen peroxide ...The average cost of spray foam insulation is $6,000. People typically spend between $3,000 and $10,000 to insulate their homes. We’re diving into everything you need to know about spray foam installation, including costs and pricing, methods and types of installation, and money-saving tips.Jun 28, 2022 · As of 2023, the national average cost of spray foam insulation installation is $2,492. This cost can be as low as $1,200 but go up to $3,700 or more, depending on the size of the job. In fact, the square footage of your attic is going to be the biggest deciding factor on how much it’s going to cost. This material costs more mainly because of ... Spray foam is used to seal the entire building envelope of your home to prevent air infiltration, so savings of 30% or greater can be achieved when compared to the alternative insulation and roofing systems. The upfront cost of SPF insulation or roofing systems can often be recovered in a matter of years through energy savings alone.Jun 2, 2023 · Icynene spray foam insulation instantly increases the sale value of your home. “ Energy-efficient homes are valued at around £10,000 more than those that are deemed non-energy efficient .”. The latest research also shows that over 70% of buyers consider energy efficiency as the main buying point. But that’s not all…. Learn how much spray foam insulation costs based on factors like material, space and labor. Compare open-cell and closed-cell spray foam types and see …How Much Does Spray Foam Insulation Cost? In general, closed-cell polyurethane foam costs between $1.00 and $1.50 per board foot. Open-cell polyurethane foam is slightly less expensive at $0.60 to $1.00 per board foot.Spray Foam Insulation. Review Rating. Please choose a rating. Brand. GREAT STUFF. Loctite. FROTH-PAK. GREAT STUFF PRO. Gorilla. Price. to. $0 - $10. $10 - $20. $50 - …Spray Foam Insulation – Total. $372.00 - $576.00. $576.00 - $732.00. $870.00 - $1020.00. Spray Foam Insulation – Total Average Cost per square foot. $3.95. $5.45. $7.88. Cost can add up quickly, especially if you’re a novice and have never attempted a Spray Foam Insulation installation before.Jan 27, 2024 ... The cost of a spray foam system, including the kit cost, varies depending on the size and type of foam (open-cell vs. closed-cell). On average, ...For Zones 4–8: Add R10 insulative wall sheathing beneath the new siding. Basement or Crawlspace Wall Insulation: Zone 3: Add R5 insulative wall sheathing or R13 batt. Zones 4A and 4B: Add R10 insulative wall sheathing or R13 batt. Zones 4C and 5–8: Add R15 insulative wall sheathing or R19 batt. Note: This guidance is based on the 2021 ...Hire the Best Spray Foam Insulation Contractors in Summerville, SC on HomeAdvisor. Compare Homeowner Reviews from 5 Top Summerville Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Summerville, South Carolina Average. $4,493. Typical Range. $4,460 - $4,900. Low End - High End. $2,200 ...When it comes to insulation, spray foam is one of the most effective and efficient materials available. It can help reduce energy costs, improve air quality, and provide a more com...Costs for related projects in Riverview, FL. Install Blown-In Insulation. $1,000 - $1,575. Install Spray Foam Insulation. $0 - $3,500. View other insulation costs for Riverview. Get Local Quotes.May 16, 2023 ... DIY spray foam insulation costs $0.80 to $1.80 per board foot on average. DIY spray foam insulation kits cost $300 to $850 and covers 200 or ...Hydrogen peroxide is something that is used to clean cuts. Have you ever wondered why it foams when placed on a cut? Learn about hydrogen peroxide. Advertisement Hydrogen peroxide ...For cost-effective Open Cell Spray Foam (OCSF), the general rule of thumb is to use $0.40 to $0.50 per board foot (a board foot is a square foot 1” thick). For ...Hire the Best Spray Foam Insulation Contractors in New York, NY on HomeAdvisor. Compare Homeowner Reviews from 8 Top New York Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? New York, New York Average. $2,594. Typical Range. $1,800 - $3,700. Low End - High End. $800 - …
Closed-cell spray foam insulation costs between $1.00–$1.50 per board foot to apply. The rigidity of closed-cell spray foam makes it an awesome moisture barrier and air barrier, and it insulates like nothing else. If insulation is your only goal, this is the spray foam for you. Labor for this type of work ranges from $50–$100 per hour.. Nightingale ice cream
Spray Foam Insulation Cost Guide offers cost estimates on Spray Foam Insulation in Phoenix. Get accurate prices to Spray Foam Insulation in Phoenix for 2024 ...Our closed-cell products have R-values ranging from 6.7” to 7” per inch of material. Long story short: Spray foam insulation increases energy efficiency over the long term and prevents energy from skedaddling out through the structure’s exterior walls. When it comes to insulating and energy savings, spray foam can represent a 30% to 50% ...Hire the Best Spray Foam Insulation Contractors in Lansing, MI on HomeAdvisor. Compare Homeowner Reviews from 5 Top Lansing Spray Foam Insulation Install services. ... How much do . spray foam insulation contractors typically cost? Lansing, Michigan Average. $1,650. Typical Range. $1,250 - $1,600. Low End - High End. $1,000 - $2,500. …Spray foam insulation kits are a great way to insulate your home or business and save money on energy bills. Buying these kits in bulk can provide even more benefits, from cost sav...Spray foam is known to reduce monthly energy costs by 40% on average over other insulation methods. Other insulation materials, like fiberglass batt insulation, provide some basic insulation coverage for walls, ceilings …How Much Does Spray Foam Insulation Cost? In general, closed-cell polyurethane foam costs between $1.00 and $1.50 per board foot. Open-cell polyurethane foam is slightly less expensive at $0.60 to $1.00 per board foot.If you are getting into the Spray Foam Insulation Business, Foam Roofing, Concrete Lifting or Protective Coatings Application, you will need highly skilled support and training technicians to guide you through the business. Profoam is your number #1 spray foam and equipment supplier. We are former spray foam contractors who know your business ...In general, you can expect to pay between $20,000 and $30,000 but can last over 100 years due to it’s superior durability. GET ESTIMATES. Table of Contents. What is Spray Foam Insulation? What …Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in El Paso, Texas ranges from $0.90 to $1.40 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and attics typically need ...The national average cost is $2,000 for spray foam insulation in an 800 sq.ft. space beneath the house. How much does it cost to install R-19 insulation in a crawl space?-19 batt insulation costs between $1 and $2 per sq.ft. to install in a crawl space. The higher the R-value, the greater the insulation strength and the more expensive the ... Spray Polyurethane Foam insulation is rigid, lightweight, flexible, wind resistant, and effective in extreme temperatures and weather conditions. Spray foam insulation has the highest R-value per square inch of any commercially available insulation material. Spray foam insulation offers added value because it acts as an air and moisture barrier ... Professional spray foam insulation costs $0.60 to $1.30 per board foot for open-cell spray foam or $1.30 to $2.90 per board foot for closed-cell foam, including installation. In comparison, other types of …Jun 28, 2021 ... We get asked non-stop what is the Square Foot Price. In this video we answer that - more than you expect. http://www.sprayjones.com/ Does ...Cost of Spray Foam Insulation Installation in Ohio. $1.78 per square foot (Range: $1.22 - $2.34) Free Estimates from Local Pros. Get Matched &. Get Quotes From. Insulation Contractors. Select a Service to Get Started. . Insulation - Blown-In.Learn how spray foam insulation works, the types of spray foam, the pros and cons, and the cost of installing it. Find out how much spray foam insulation costs per …Sika Sika Boom AS-PRO, 30 oz Spray Foam for Doors and Windows Insulation Gun-Grade Polyurethane Foam 850g. Model # 513477 SKU # 1001042385. (11) $25.Spray foam insulation cost will depend on how large your house is, but it usually starts at around $1,900 to $4,000 per house. The average hourly labour rate for spray insulation is between $50 and $120 per hour, depending on the experience of the spray insulation specialist you will hire.There are many materials you can use to insulate your home. Learn what types of insulation can keep your house warm in this article. Advertisement There are many materials you can ... According to Checkatrade, the cost of removing spray foam insulation can cost around £40 per square metre but you also need to factor in the cost of the skips as well as the safe disposal of the insulation. Unacceptable situation for homeowners . The situation with spray foam is very concerning for homeowners – but also very confusing. Spray foam insulation cost (closed cell foam insulation): Closed cell spray foam insulation in San Jose, California ranges from $1.00 to $1.60 per board foot. Each sprayed layer expands to about one inch (R-value of around 7). Exterior walls may need up to 3-inches of closed cell insulation (which has an R-value of about 21) and ….