Quick Answer: What Insulation Should I Use In My Ceiling?

Can I put insulation under my roof?

But the best solution is actually to insulate both the attic floor and the underside of the roof.

In this way you prevent the heat from the rooms below escaping to the attic rooms above.

At the same time, the areas below the roof benefit from increased comfort both during the winter and the summer..

What type of insulation is best 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. See the Department of Energy’s (DOE) ranges for recommended levels of insulation below.

What is the best R rating for ceiling insulation?

Select the right R valueExisting roof insulationMinimum recommended R value of top up to achieve total R value of 3.5Recommended R value of top up to achieve total R value of 5.0Less than 50mm of insulation This assumes an R Value of 0R3.5R5.050–100 mm of insulation This assumes an R Value of 1.5R2.0R3.51 more row

What is the most effective insulation?

Aerogel is more expensive, but definitely the best type of insulation. Fiberglass is cheap, but requires careful handling. Mineral wool is effective, but not fire resistant. Cellulose is fire resistant, eco-friendly, and effective, but hard to apply.

What material has highest R value?

R-value (insulation)Vacuum insulated panels have the highest R-value, approximately R-45 (in U.S. units) per inch; aerogel has the next highest R-value (about R-10 to R-30 per inch), followed by polyurethane (PUR) and phenolic foam insulations with R-7 per inch. … Straw bales perform at about R-1.5 per inch.More items…

What is the thinnest insulation with the highest R value?

OPTIM-R is Kingspan’s thinnest insulation. It comprises of a rigid vacuum insulation panel (VIP) with a micro porous core which is evacuated, encased and sealed in a thin, gas-tight envelope which gives an outstanding thermal conductivity of 0.007 W/m.K.

Can you over insulate a house?

It is possible to over-insulate your house so much that it can’t breathe. The whole point of home insulation is to tightly seal your home’s interior. But if it becomes too tightly sealed with too many layers of insulation, moisture can get trapped inside those layers.

Can you put too much insulation in attic?

But there may be a theoretical point of “too much.” If a home is over-insulated and is too tightly sealed, moisture can get trapped inside. Without proper ventilation, a home can build up too much moisture, especially in the attic (warm air rises), which can cause mold problems and, overall, lower indoor air quality.

Should you insulate your 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.

What type of insulation is used for vaulted ceilings?

For years, fiberglass batt insulation was the only way to insulate vaulted ceilings. Over time, fiberglass batts can slide out of place and compromise your home’s energy efficiency. When insulating a vaulted ceiling, R-value and moisture management must be addressed. Spray foam insulation can achieve both.

Is it better to insulate ceiling or roof?

In order to avoid damage to the roof deck, you should insulate ceilings to create an air barrier between the living space and an unfinished attic or airspace underneath the roof deck.

What is the best insulation for an attic ceiling?

Fiberglass, cotton, and mineral wool can all work as loose-fill material, but the far and away top choice for blown-in insulation is cellulose. Contrary to batts, blown-in cellulose insulation is perfect for filling in tight voids around wiring, pipes, or any area with awkward framing.

Do vaulted ceilings add value?

Rooms with vaulted ceilings tend to have larger windows, which means that natural light can more easily fill the room. Rooms with vaulted ceilings have more space, helping to keep them from feeling cramped. … Regardless of the energy costs, vaulted ceilings generally add value to a home.