Comparisons
DIY vs Hiring an Insulation Contractor
Labor is 45–65% of a typical insulation bid, so DIY savings are large. But some jobs need equipment, certification or a warranty you cannot self-issue.
Updated January 2026 · about 7 min read
Great DIY jobs
Blowing an open attic floor, air sealing, garage door kits, rim joists with rigid foam, pipe and water-heater insulation, weatherstripping, batting an unfinished basement stud wall. Savings of 45–60% are typical.
Hire it out
Whole-house spray foam, dense-pack retrofit of closed walls, contaminated insulation removal, vermiculite, and any job requiring work near knob-and-tube wiring or a compromised roof deck.
Gear for this job
Owens Corning R-19 Unfaced Fiberglass Insulation 77.5 Sq.ft (15 in x 93 in) 1 Batt
Check price on Amazon
Attic Measuring Rulers (Case of 400), 20 Inch, Card Stock, Attic Insulation R-Value Ruler for Insulators Ceiling Insulation
Check price on Amazon
DGSL Double Reflective Bubble Foil Insulation Foam, 23.6 in X 10 FT Aluminum Foil Thermal Insulation Radiant Barrier for Window, Garage Door, RV, Roof
Check price on Amazon
Plant Fiber Insulation Wood Fiber Insulation Foam, Gray Cellulos Roll, 25kg Wall Insulation , Newspaper Fiber
Check price on Amazon
As an Amazon Associate we earn from qualifying purchases. Product links on this page may earn us a commission at no extra cost to you.
What a fair quote includes
Square footage and target R-value in writing, whether air sealing is included (it should be — ask specifically), baffle installation, hatch cover, cleanup and disposal, and the product data sheet for any foam.
- Get three quotes with the same scope
- Ask for the installed R-value, not just inches
- Confirm insurance and any state licensing
- Ask about utility rebate paperwork — many contractors file it for you
The hybrid approach
A very common money-saver: do the air sealing and prep yourself, then pay a crew for a couple of hours of blowing. You get professional coverage on the part that needs a machine and keep the labor-heavy prep in-house.
Run the numbers
Frequently asked questions
- How much can I save doing insulation myself?
- Usually 45–60% on attic and batt work. Spray foam DIY kits save less because the material itself is the main cost.
- Do contractors handle rebate paperwork?
- Most utility programs require a participating contractor, and those contractors typically file for you. DIY projects can still claim the federal 25C material credit.
- How long does a pro attic job take?
- A crew of two or three finishes a typical attic in 4–8 hours including air sealing.
Insulation gear worth owning
The tools and materials that show up on almost every insulation job.
PSI Woodworking DC3XX 1.5 HP Portable Dust Collector Motor Blower
Check price on Amazon
Owens Corning R-19 Unfaced Fiberglass Insulation 77.5 Sq.ft (15 in x 93 in) 1 Batt
Check price on Amazon
Respirator Mask with Filters set - Reusable Respirator Mask for Chemicals, Painting, Spraying, Epoxy Resin, Dust, DIY etc
Check price on Amazon
DongChu Insulated Electrician Gloves 1000V Coated Work Gloves for Electrical Maintenance, Non-slip Prevent Shock, Home Repair, Outlet Replacement, DIY Projects, Large
Check price on Amazon
As an Amazon Associate we earn from qualifying purchases. Product links on this page may earn us a commission at no extra cost to you.