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

Can you use wall insulation in ceiling?

The best option is to install fiberglass batt insulation.

If you use the faced variety, the facing provides an effective way to hold the insulation in place, and it creates a vapor barrier that keeps the insulation dry.

Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists..

Can you put insulation on top of insulation?

According to ENERGY STAR®, you can put new insulation over old insulation, “unless it is wet. … The vapor retarder on top of or between layers of insulation can trap moisture. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.

Can you use R19 in ceiling?

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.

Do you put insulation in the 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.

How thick should my ceiling insulation be?

Most common types of older insulation would have been at least 100mm thick when new1, however some settlement or compression can be expected for older insulation2. In general, all areas of ceiling insulation should have a thickness greater than 70 mm above all accessible habitable spaces, as shown in table 2.

Does insulation in the ceiling reduce noise?

Yes, insulation helps reduce noise both from outside and between different levels and rooms inside your home. In fact, if outside noises seem louder than they should be, it may be a sign you don’t have enough insulation. … Loose-fill cellulose and fiberglass insulation are the best types of insulation for sound control.

Which type of insulation is best for attic?

FiberglassBlown-in. Also known as loose-fill, blown-in insulation comes in tiny chunks packaged in large bags, and entails using a blowing machine to fill in necessary spaces. Fiberglass, cotton, and mineral wool can all work as loose-fill material, but the far and away top choice for blown-in insulation is fiberglass.

How thick should insulation be?

between 50 and 100mmThe thickness of the insulation needs to be between 50 and 100mm and is usually installed where there are severe heating problems or the exterior of the building requires some form of other repair work providing the opportunity of adding insulation.

Is it OK to insulate roof rafters?

Insulating between rafters will do no good, because the attic should be ventilated, and the rafter insulation would be between two unheated spaces. … Moisture buildup in the attic is a concern because it can condense into water, often causing mold. Good ventilation, from soffit vents and a ridge vent, will stop that.

Which is better R30 or R19?

Insulation in your walls and ceilings slows down this 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.

Is R30 insulation good for ceiling?

When insulating your home, it is important to consider all sides of a room, including the ceiling. R-values measure the resistance to heat flow across a material. For ceilings, R-30 insulation is the recommended minimum.

Does roof insulation make a difference?

Insulation batts, correctly installed in the walls and ceilings will vastly reduce the amount of energy required to heat the house in winter, and keep it cool in summer. In fact, a proper level of insulation can more than halve your heating and cooling bill!

How long does Ceiling Insulation last?

15 to 20 yearsAs a general rule, insulation should be replaced or retrofitted every 15 to 20 years. However, it may need replacing or retrofitting sooner depending on the type of insulation installed, the R rating of the original insulation, compression and movement over time, and whether any damage has occurred.

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.

Is it better to insulate ceiling or roof?

Saving energy costs by preventing heat loss due to heat conduction. Preventing the roof from accumulating moisture damage. Ease of construction- insulating the ceiling can be easier than insulating the roof, particularly with older homes.

How much does ceiling insulation cost?

Cost of Ceiling InsulationCeiling Insulation CostsZip CodeSq. ft.BasicBetterCeiling Insulation – Installation Cost$125.00 – $135.00$175.00 – $200.00Ceiling Insulation – Total$165.00 – $180.00$225.00 – $255.00Ceiling Insulation – Total Average Cost per square foot$1.73$2.401 more row