What insulation has highest R-value per inch?

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.

What has the best R-value per inch?

Among insulation types, rigid foam panels have the highest R-value per inch.

What is the thinnest insulation with highest R-value?

Aerogel insulation offers the highest R-value of any insulating material at less weight and thickness—ideal for construction, refineries, pipelines, and thin-gap thermal barriers.

What is the highest R-value for 6 inch batt insulation?

Fiberglass Insulation Batts

Fiberglass blankets or rolls provide an R-value of up to 3.2 per inch, so a 6-inch fiberglass batt may achieve an R-value of 19.2, and some high-performance products are rated at R-21.

What is the R-value of 1 inch Styrofoam?

STYROFOAM extruded polystyrene insulation is rated at an R-value of 5.0 per inch at 75°F.

Busting R-value insulation MYTHS

What is r8 insulation used for?

EcoFoil R-8 HVAC Duct Wrap Insulation is specifically designed to reduce radiant heat gain/loss in residential and commercial duct applications. The insulation also helps control condensation by providing an airtight thermal break around the HVAC ducting.

What is the R-value of 3 inch foam board?

This product typically has an R value of 3.6 to 4.0 per inch of thickness.

Is r40 insulation good?

It is a rigid material that helps reject lots of water, adds wall racking strength as well as impact resistance. Closed-cell foam has a higher R-Value than any insulation, it ranges from 5.0 to 7.0 per inch. Regarding the thickness of the spray foam insulation, it depends on certain factors.

What R-value does wood have?

The R-Value of Wood

The R-value for wood ranges between 1.41 per inch (2.54 cm) for most softwoods and 0.71 for most hardwoods. Ignoring the benefits of the thermal mass, a 6-inch (15.24 cm) softwood log wall has a clear-wall (a wall without windows or doors) R-value of just over 8.

What is the R-value of 2 inch blue foam?

A wall utilizing STYROFOAM T-MASS Technology with a 2-inch exterior layer and a 4-inch interior layer of concrete along with a 2-inch layer of STYROFOAM extruded polystyrene insulation would result in a material R-value of approximately 11.33.

What is the R-value of Rockwool?

While fiberglass insulation is capable of offering an R-value of about 2.2 to 2.7 per inch of insulation, Rockwool has an R-value between 3.0 to 3.3 per inch of insulation.

What is the most efficient type of insulation?

Spray foam insulation is the most energy-efficient insulation to create an air barrier in the attic. Certain spray foams can expand up to 100 times its original size, so it fills all of the nooks and crannies in the attic.

What is the most effective home insulation?

Overall, if you are looking for the best long-term solution, foam insulation products will create the air seal in your home that will make it more comfortable while saving you money on your monthly energy bills. Foam insulation doesn't settle or sag and it fills all the nooks and crannies where it is installed.

What is the highest R-value for a 2x6 wall?

Thermal Control

The installed insulation R-value for 2x6 fiberglass batt ranges between R-19 and R-21. When blown or sprayed cellulose insulation is used, the R-value is typically R-20 for 2x6 walls.

How many inches of insulation is R40?

Fresh, new cellulose loose-fill insulation has an R Value of 3.1 to 3.8 per inch. You see, cellulose insulation has a higher R value per inch than loose fill fiberglass insulation. We are a cellulose installer. To achieve R-40, we install 12” of cellulose insulation.

What is R28 insulation used for?

Use this fibreglass attic insulation between wall studs, floor joints, on the ceiling and in attics. It offers effective resistance to heat transfer to improve the energy efficiency of your home.

What is the R-value of 4 inch STYROFOAM?

STYROFOAM extruded polystyrene insulation is rated at an R-value of 5.0 per inch at 75°F.

What is the R-value of 2 inch white STYROFOAM?

With an R-value of 13.1 for a 2" thick sheet only two 2" sheets are required to achieve R-25. 2. Extruded polystyrene or XPS (foam is usually pink or blue) XPS has an R-value of 5 per inch of thickness requiring 5" of insulation to achieve R-25.

Is R6 or R8 better?

R8 ducting uses thicker insulation than R6 ducting. This means that if you were to do air conditioning installation using R8 ducting, you get better insulation than if you are using R6 ducting. When it comes to efficiency of heat insulation R6 ducting is less efficient than R8 ducting.

What is R6 insulation?

0 Insulation. The easiest way to increase the R-value of a product is to increase the roof insulation thickness, hence R6. 0 ceiling insulation batts are between 250mm and 275mm thick. These glasswool products can be easily cut using a sharp retractable knife.

How thick is R8 Ductboard?

Duct board 4 foot X 10 foot sheet 2" thick R8.