basement green attic insulation chicago contractor companies walls ceiling rim joist

Attic insulation cost per sq ft.

Material Comparison R-Value $ cost fiberglass / cellulose/ spray foam

Determine cost/value ratio and measure performance?

R49 is minimum code for attics in zone 5 which includes parts of the Midwest and Chicago.

R38-R49 does not perform well in extreme heat ( summer days in Chicago averaging 85-90 degrees ) or extreme cold -10 30 degrees ) 

Cost to  insulate an attic R-49 in per 1000 sq ft 

This includes air seal, baffles, and hatch cover. 

insulation cost r value cost per inch insulation contractor chicago spray foam cost vs cellulose vs fiberglass comparison insulator contrator sprayfoam

Cost for cellulose insulation services include

  • Price for attic insulation – $2.30 Per Sq. Ft
  • Price for cathedral ceiling insulation $3.50. – 5.00 Per Sq. Ft. 
  • flat roof insulation $3.50. – 5.00 Per Sq. Ft.
  • basement insulation$1.50. – 4.00 Per Sq. Ft.
  • exterior wall insulation $1.50. – 4.50 Per Sq. Ft.
  • garage ceiling insulation$3.50. – 5.00 Per Sq. Ft.
  • transition wall insulation$2.50. – 4.00 Per Sq. Ft.
  • furnace room insulation$1.50. – 4.00 Per Sq. Ft.
  • crawl space insulation $2.50. – 4.50 Per Sq. Ft.
  • kitchen and bathroom wall insulation $1.50. – 4.50 Per Sq. Ft.

Prices are based on current average cost. Price may vary based on scope of work. Cellulose loose fill insulation has a major advantage over batt or spray foam powerful truck mounted blowing machines blown directly into the stud cavity with the drywall already in place. 

Advantages :  a cost effective  alternative to spray foam when retrofitting building or residential homes.

Cellulose is plant based recycled materials. 

Disadvantages: Thermal Bridging 

Advantages : Cost. Green Materials. Non itchy

How much R-value can you get for $3 per square foot. Cellulose R21 Fiberglass R15 How much R-value can you get for $4 Mineral Wool R23 Spray Foam R21

insulation cost per sq ft

attic insulation

Insulation materials are produced in a variety of ways using several different material combinations. 

Fix My Attic : Achieving results  by reaching the recommended home insulation R-Values through thermal performance or R-value of insulation is  dependent on proper installation of that material and its interaction with surrounding materials. Comparing insulation cost for 2×6 sidewalls, attic insulation, cathedral ceilings, and basement insulation, we find cellulose is preferred with exception of basement wall insulation. 

Since R-Value is measured in enclosed spaces, any air infiltration into the insulated cavity significantly reduces intended R-Value.

Fiberglass fails to provide air infiltration protection. 

We install the correct / optimal insulation levels for your attic R60 , ceilingR38-60, sidewall R21, basement R13, and crawl space R13-38.  

Your budget $3 per sq ft for insulation which includes additional considerations. Fire stop and air seal cost an extra .35 cents. Cellulose provides R21 insulation, fills voids and gaps left by fiberglass, performs better in summer, and has better fire resistance, mold mildew and moisture resistance, and is pest resistant. 

  • insulation labor and material
  • fire stop 
  • air seal
  • R-value to code
  • proper ventilation
  • cozy comfortable interior
  • pass occupancy inspections
Attic Insulation Cost 1

Insulation Cost Advantages / Disadvantages

Insulation cost factors measured by R-Value as a key performance indicator.  Spray foam is superior in R-value per inch, making it ideal to choose a combination of closed cell spray foam as the bottom layer and fiberglass batts to fill in the depth of the framing cavity ( called the flash and batt method.)

Flash and Batt Method is a new hybrid combination of closed cell spray foam and fiberglass batts to reduce costs of labor and materials for spray foam insulation. 

Attic Insulation Cost 2

Areas to Choose Cellulose Over Spray Foam include

  • cathedral ceiling
  • attic duct work
  • knee wall 
  • vented attic 
  • sidewall
  • new construction sound dampening

Spray Foam Insulation Cost

Spray foam insulation cost- spray foam is currently 1.65 per inch. but how many inches are you installing .  3 ” of foam vs 16 inches of cellulose you will get greater heat retention . R60 vs R21 rating for an enclosed space. 

Cost per inch of R-Value for an existing cathedral ceiling. Four Considerations are fiberglass batt, loose fill fiberglass, loose fill cellulose, and closed cell spray foam. Cost per inch includes labor, material, installation. 

What is the cost of spray foam ? spray foam in a cathedral ceiling vs 6″ of cellulose. $4.50 R35 with spray foam (benefit more tight . but if you seal the gaps properly with tyvek seam tape . with cellulose gives about R21. $2

if you open the ceiling to spray cost of drywall removal and drywall replaced after spray. 

what is the cost of cellulose? 

Insulation Cost of Spray Foam Cellulose Fiberglass

Cost Per Inch R-Value r value loose fill cellulose fiberglass spray foam insulation thermal resistance home contractor green attic insulation

wall insulation 2×6 cellulose stops air 35 % better than fiberglass. its fire retardant and doesnt require drywall removal for insulation . gaps and cracks in older home lower r value per inch than spray foam . cellulose is cost efficient . lower r value on a 2×4. 

for the wintertime fiberglass is great because the drywall holds the heat in the room . in the summer time the fiberglass is letting the heat pass through and making the drywall hot. 

Chicago Climate basement insulation prefers fiberglass

To choose the best type of insulation, you should first determine the following:

  • Who will diagnose the current conditions of the home based on occupants experience with cold or drafty rooms in the winter and hot / humid 2nd floor bedrooms  and create an action plan for change? will install the insulation
  • What  is the reason for choosing to add insulation / ventilation to your attic, exterior  walls, garage ceiling, basement, or crawlspace and what are the recommended R-values for areas you want to insulate.
  • Where  you want improvements on the interior living space ( home )  install/add insulation
  • Why  types of insulation Cost Per Inch Vs. R-Value

Connect with us! Visit our Tik Tok, Facebook, Instagram, Twitter, Youtube

Comfortable Doesn't Have to be Costly

Attic insulation can reduce heating bills by up to 50%. Get a free estimate from our team of insulation experts.

  • No more drafty rooms
  • Better air quality
  • Pay less on your heating & cooling bills
Attic Insulation Cost 3

                       We are BPI Certified Contractor

BPI has the highest standards in energy efficiency and green building. That’s why all our technicians are BPI certified.  BPI Requires professionals to stay up to date, so you know that everyone licensed through BPI is fully up to date on new research & technology.

    Contact Details


    Service Details



    Common housing or remodeling materials may contain toxins, chemicals, or harsh substances that may harm your health. 

    Insulation is no different. VOCs found in polyurethane spray foam insulation. Formaldehyde found in rigid foam.

    Attic insulation cost considerations include 

    Green Attic

    How can we help?

    [contact-form-7 404 "Not Found"]


    We Focus On Air Quality, Comfort, and Energy Efficiency


    Fully Licensed and Insured