For most applications a rating of r 6 or better will provide the best efficiency and long term cost effectiveness.
Duct liner insulation r value.
It provides acoustical and thermal performance for lined metal ducts.
Because it never gets very cold in florida you don t need duct insulation with as high an r value as you would if you lived up north.
For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3.
Value operating temperature astm c411 250 f 121 c maximum air velocity ul 181 erosion test astm c1071 6 000 fpm 30 5 m sec water vapor sorption by weight astm c1104 3 at 120 f 49 c 95 r h.
Jm offers this product as part of our commitment to providing a complete range of product solutions.
Fungi resistance astm c1338 meets requirements fungi resistance astm g21 meets requirements.
Composed of rotary type glass fibers it features a durable air stream surface with an antimicrobial agent and a sustainable base mat.
The antimicrobial properties are intended to only protect this prodcut.
Toughgard r rotary duct liner offers outstanding thermal and acoustical performance in duct liner applications.
Purchasing the ducting and the insulation separately is often more cost effective and has a greater variety of options when it comes time to choose the r value of your insulation.
Typically r 4 to r 8 is appropriate for the ducts within the insulated part of your home.