Recommended Attic Insulation R Value

Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value.

Recommended attic insulation r value.

The higher the r value the better the thermal performance of the insulation. The main factors that impact the cost are. R values of common types of insulation the two distinct types of attic insulation are loose fill material also commonly known as blown in insulation and batting. The recommended r value for attic insulation in ontario is between r 50 and r 60.

If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs. R value is an efficiency rating for insulation. Sacramento and most of california are in zone 3 which requires attic insulation with an r value between 30 and 60. It refers to a particular insulation s ability to resist heat flow.

Inspecting your attic insulation will help you determine your insulation needs. You can achieve better thermal performance in your attic by adding an additional layer of insulation. The correct amount can help maintain a comfortable temperature and save money. See the department of energy s doe ranges for recommended levels of insulation below.

On this chart each part of the country is divided into different zones and each zone has a recommended r value. 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. Square footage of your attic. In particularly cold climates you might go up to r 60.

The higher the value the more insulating ability the product has. Type and material of your insulation. According to home advisor insulating your attic can cost between 1700 to 2100. Achieving greater r values in exterior walls.

To achieve a higher attic insulation r value simply add another layer of insulation. Contractor or insulation installer s fee. Recommended insulation levels for retrofitting existing wood framed buildings. But newer homes in central and southern arizona are insulated to ratings of r 30 to r 38 while newer homes in northern arizona generally have attic insulation at r 60 because of colder winters.

R values vary based on. In general an attic s r value should be between r 30 and r 49. Existing 3 4 inches of insulation. That s where this nifty energystar chart comes in handy.