Cooperative Extension Energy Saving ProgramHome Energy Savings
  
 
 
Insulation

Nearly every home in NY is under-insulated, and adding more insulation is one of the most important long-term improvements to energy use efficiency and to the comfort of your home, for both the winter and the summer.

Adding insulation to the attic is a relatively easy, relatively low cost way to add considerably to the comfort of your home while reducing energy costs. The second most important location to consider adding insulation is to your basement or crawlspace. Adding insulation to walls is more difficult than insulating either the attic or basement, and is not covered here .

Caution!

  • Most insulation does not block air leakage!  The benefits of insulation are substantially increased if you seal the air leaks in your home first
  • If you do any insulation work in your attic be very careful to not block any ventilation system components. “Ventilate before you insulate!”
  • Most insulation installed by homeowners is installed improperly.  Improper installation can significantly decrease effectiveness.  We recommend hiring a BPI certified contractor to seal air leaks and install insulation

What you can do:

  • Adding blown-in cellulose or fiberglass insulation on top of the insulation already present in your attic is relatively easy and inexpensive if you do it yourself. Homes in Central NY will benefit from adding insulation up to about 15 inches of fiberglass or blown in insulation in the attic.
  • Be sure to insulate the access door or hatch to the attic. An uninsulated attic hatch door can be one of the biggest heat losers in an otherwise well insulated home.
  • Over 20% of the total heat loss in a home can result from heat loss from the main part of the house to the unheated basement, if the basement is not insulated. If your basement is only used for storage, insulating the ceiling of the basement (just below the floor of the main living area) is another relatively easy, relatively inexpensive job (if you do it yourself) that helps make the home much more comfortable and can pay for itself in one or two years.

CAUTION: Be sure to seal all holes and cracks in the foundation and basement and insulate any water pipes in your basement if you insulate the basement ceiling (below main floor).

Savings:

If done in conjunction with air sealing throughout the house you can expect to save 10%-30% on heating costs, depending on how much insulation you already have, and how well sealed your home was before beginning this work.


 

How-To Guides

Videos:

How insulation works
A simple explanation.
(PDF, 10KB)


How to prepare attics for insulation

Excellent very detailed instructions on preparing attics for insulation. (17 minutes, WMV video, 28 MB)


How to install blown in wall insulation

(17 minutes, WMV video, 29 MB)


How to install interior perimeter insulation

Excellent video on venting and insulating crawlspaces, and insulating water pipes. (13 minutes, WMV video, 103 MB)


How to install loose fill attic insulation

Excellent, very detailed instructions on insulating with cellulose. (8 minutes, WMV video, 14 MB)


How to insulate converted attics

Excellent very detailed instructions on preparing and insulating converted attics.
(12 minutes, WMV video, 21 MB)

PDFs

For mobile home owners
For more information on how to add insulation to the floor, roof and sidewalls, go to page 32. (PDF, 1.83 MB)

How insulation works
(PDF,29 KB)

Insulation check-up
Lots of useful information. (PDF, 80KB)

Do-it-yourself guide to sealing and insulating
(PDF, 2 MB)

Insulate Ceilings and Attics
(PDF, 135 KB)

Adding insulation to an existing home
(PDF, 13 KB)

Attic access insulation and air sealing
(PDF, 34KB)

Home tightening, ventilating and insulating
(PDF, 1.5 MB)

Estimating the payback period of additional Insulation
(PDF, 39 KB)

Insulation - where and how much?
(PDF, 76 KB)

Types of insulation
(PDF, 30KB)

Loose fill insulation
(PDF, 25 KB)

Sprayed foam insulation
(PDF, 12 KB)

Foam board insulation
(PDF, 16 KB)

Blanket insulation - batt and roll
(PDF, 13 KB)

Urban Options insulation guide
Thorough guide to insulating everything! (PDF, 177 KB)