Elite QandA


Can you use R19 for ceiling insulation?


  1. Can you use R19 for ceiling insulation?
  2. What insulation is used for ceilings?
  3. Does R19 work in attic?
  4. What is the recommended R-value for roofs?
  5. Is R-19 insulation good?
  6. Should I insulate my ceiling?
  7. Is R30 thicker than R19?
  8. Is there a big difference between R13 and R19 insulation?
  9. How do you calculate insulation for a ceiling?
  10. How much of a difference does ceiling insulation make?
  11. Can I insulate the underside of my roof?
  12. How good is R19 insulation?
  13. Should you remove old insulation before adding new?
  14. How do you insulate a below ceiling?
  15. How long is a roll of r19 insulation?
  16. How do you calculate cellulose insulation needed?

Can you use R19 for ceiling insulation?

The reason they ask/recommand for so much in the Ceiling is because it is generally easy to do. If you are adding R19 to current insulation then yes, you can add the batts of insulation cross ways over the existing layer and above the joists or bottom of the trusses.

What insulation is used for ceilings?

Typical recommendations for exterior walls are R-13 to R-23, while R-30, R-38 and R-49 are common for ceilings and attic spaces.

Does R19 work in attic?

Most homes only have R19 in attics. To give you an idea that's only 5 1/2 inches of insulation. That's ok for your walls. So by adding another R19 “5 1/2 inches will give you an R38 value.

What is the recommended R-value for roofs?

between R-30 and R-60For homes in California, the attic should achieve an R-value between R-30 and R-60. Most areas of the country have a higher minimum R-value recommendation, but just about everywhere recommends up to R-60.

Is R-19 insulation good?

Any good insulation material, such as fiberglass, foam board, spray foam, etc., all act to slow down heat transfer out of your home. So R19 is better insulation than R13, and R30 is better than R19. The larger the R value, the better the insulation value.

Should I insulate my ceiling?

In addition to walls and attics, insulation should be installed in ceilings with unheated spaces, basement walls, floors above vented crawl spaces, cathedral ceilings, floors over unheated garages or porches, knee walls, and in between interior walls—especially bathrooms—as well as ceilings and floors.

Is R30 thicker than R19?

The bigger the R value, the better the insulation is at slowing down the heat transfer. So R19 is better insulation than R13, and R30 is better than R19. The larger the R value, the better the insulation value.

Is there a big difference between R13 and R19 insulation?

There is a direct relationship between the amount of insulation and the amount of heat transfer. The bigger the R value, the better the insulation is at slowing down the heat transfer. So R19 is better insulation than R13, and R30 is better than R19. The larger the R value, the better the insulation value.

How do you calculate insulation for a ceiling?

Multiply the wall's length by the wall's height and don't forget to write down the spacing of the studs so you can then determine what type of the insulation will be purchased. You will need this as insulation normally comes in precut lengths or standard rolls designed to fit exactly into between studs.

How much of a difference does ceiling insulation make?

One of the places in your home where a little bit of attention can make a big difference in your comfort — and heating bill — is the attic. According to the Department of Energy, properly insulating the attic can save 10 to 50 percent on a typical heating bill.

Can I insulate the underside of my roof?

Open-cell spray polyurethane foam or closed-cell spray polyurethane foam (ccSPF) insulation can be sprayed along the underside of the roof sheathing to provide a conditioned and insulated attic space that can be durable and efficient in all climate zones (see Figure 1).

How good is R19 insulation?

Although the U.S. Department of Energy rates R-13 insulation as "good" for use in walls in southern areas of the country, it rates R-19 insulation higher, designating it as "great." That is because R-19 insulation provides more thermal insulation than R-13 does.

Should you remove old insulation before adding new?

Expert contractors that specialize in insulation advise that removing old fiberglass insulation is best before installing new cellulose insulation because of possible mildew, mold, or rodent excrement. So, by have attic insulation removal service, you are getting rid of those possible issues.

How do you insulate a below ceiling?

Another option is to blow cellulose insulation into the free space between the floor and the ceiling below. To do so, one makes little holes in the ceiling or concrete floor. Cellulose insulation primarily insulates air noises. In order to mute impact sounds as well, you should choose a thick insulation layer.

How long is a roll of r19 insulation?

x 39.2 ft.

How do you calculate cellulose insulation needed?

To determine how much cellulose insulation you need, take the square footage of the space and divide it by either the depth or the desired R-value.



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