Customer Testimonies

"Thank you Perkins Inc. for what your company offers
a superb, hi-quality service that saves DFW homeowners money, energy and reduces our impact on the environment as well! Perkins Inc. used hi-tech equipment to rate my home for energy loss and air infiltration problems. They repaired every issue they could find until my house had an acceptable rating." More >>

Will Raymond
Carrollton Tx.
The service provided by Perkins Inc. far exceeded my expectations. They were professional, informative and highly skilled. They gave me excellent advice and rescued me from making an uninformed decision. I'm so thankful I called them rather than an insulation company who would have come in to simply spray insulation. I saved so much more money than I would have if I had not contacted Perkins. I will call them again when I need more services. Thanks guys! More >>

Connie Freeman
Dallas Tx.
Perkins Inc. has made drastic improvements to my household, saving me money and making my home much more eco-friendly. The attic insulation job they preformed on my home combined with the home weatherization and duct sealing made my home much warmer in the winter and much cooler in the summer. Their services are top notch and any home owner/renter should take advantage of what Perkins Inc. can do for your home! More >>

Chris Graves
Carrollton Tx.


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The Department of Energy (DOE) recently released its new R-value recommendations for new and existing homes. The insulation recommendations for attics, cathedral ceilings, walls and floors have been increased overall and generally exceed those required by most building codes. Recommended R-Values For Homes

New Wood-Framed Houses

Zone Heating System Attic Cathedral Ceiling
1 Gas, Oil, Heat Pump, Electric Furnace R30 to R49 R22 to R38
2 Gas, Oil, Heat Pump, Electric Furnace R30 to R49 R22 to R38
3 Gas, Oil, Heat Pump, Electric Furnace R30 to R49 R22 to R38
4 Gas, Oil, Heat Pump, Electric Furnace R38 to R60 R30 to R38
5 Gas, Oil, Heat Pump, Electric Furnace R38 to R60 R30 to R38
6 Gas, Oil, Heat Pump, Electric Furnace R49 to R60 R30 to R60
7 Gas, Oil, Heat Pump, Electric Furnace R49 to R60 R30 to R60
8 Gas, Oil, Heat Pump, Electric Furnace R49 to R60 R30 to R60

Existing Wood-Framed Houses

Zone Uninsulated Attic Existing 3-4 Inches of Insulation
1 R30 to R49 R25 to R30
2 R30 to R49 R25 to R38
3 R30 to R49 R25 to R38
4 R38 to R60 R38 to R60
5-8 R49 to R60 R38 to R49

The Following Chart is a list of R-Values for common types of insulation. Take a measurement of your current inches and multiply the inches by the following number that matches your current type of insulation.


Blown Pink or Yellow Fiberglass2.2
Blown White Fiberglass2.8
Blown Rockwool2.8
Blown Cellulose3.7
Batt Fiberglass3.1

So for example if you measure 4 inches of pink fiberglass your would take 4" X 2.2 and you would have about an R9 insulation R-Value.