Today, I installed the Lowes (Reflectix R21 48-in x 25-ft Unfaced Reflective Roll Insulation) glued down with GE (
GE 10.1-oz Black Silicone Window and Door Caulk). Just as "Redwings19" had installed in April. So far, the results have been positive and using this application does reduce the drone effect.
What did I learn?
1. The Reflectix product is not nearly as thick as Dynamat (http://www.dynamat.com/automotive-and-transportation/automotive-restoration/dynamat-xtreme/
) when considering its bond.
A. Dynamat has a rubber or tar compound on the back of it that is about 3/4 of an inch. That is the secret in the sauce in my opinion.
2. Because the Reflectix is lighter, I suggest you apply 5-7 tubes of the GE Black Silicone. I only used 1.5 tubes and will need to reapply in some areas for better sound deadening.
3. When applying the black silicone;
A. Use a putty knife and apply to floor on the larger pieces and to the back of the Reflectix on the smaller ones.
B. Make the letter "S" continually when applying to get an even amount.
C. Do not apply near or under the battery, fuse box or wiring.
D. If you are completely set in applying around the wiring, use Wire Loom (http://www.cableorganizer.com/wire-loom/
) before applying.
E. Never use a straight edge around wires.
What else can be done?
1. When installing the product, I decided not to pull the felt covering off of the wheel wells and decided to shove some strips of the Reflectix in there. After I drive it around for a week, I believe this will be my next step.
2. I am considering the exhaust weight solution as well.