These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
Duct liner insulation r value.
Toughgard r rotary duct liner offers outstanding thermal and acoustical performance in duct liner applications.
For most applications a rating of r 6 or better will provide the best efficiency and long term cost effectiveness.
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.
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.
It provides acoustical and thermal performance for lined metal ducts.
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.
This product meets the needs of one segment of the market that prefers a textile fiber duct liner.
The antimicrobial properties are intended to only protect this prodcut.
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.
Jm offers this product as part of our commitment to providing a complete range of product solutions.