Design Engineering 050508 Boom Mat Floor & Tunnel Shield II - Heat and Sound Insulation, 21" x 48" (7 sq. ft.)

Great product..i used it for the engine room to isolate the heat well defined work well*****

Très bonne qualité se travail très bien mais je conseil de faire des exemples en carton pour les meilleurs résultats.

This is a very high quality product but there are things you need to know. First, it is not like working with that rubberized sound deadening material that goes under your carpet. This uses a much thicker aluminum foil over a fiberglass material with a very aggressive adhesive. To give the adhesive its best chance, I started by cleaning my 140k mile floor pan multiple times with mineral spirits, prepped it with scotch bright pads and sand paper, then and gave it a fresh rattle can paint job. I let it cure for a week before installing the tunnel shield. Once the adhesive makes anything more than the lightest contact, its difficult to remove without separating the fiberglass layer so get it right the first time. I created a template with newspaper and masking tape and cut the tunnel shield material to the template. I bought an inexpensive pair of scissors (ASIN B00LSWLAA8) and they made it through the job... I needed to stop periodically to clean the adhesive and fiberglass off them. The cut edges are sharp so wear some gloves! I roughly contoured the tunnel shield to my project BEFORE removing the paper backing. I then carefully positioned my work and gradually removed the paper backing while rolling it in. Work slowly and deliberately. The foil is flexible enough to roll into and around contours but it does have its limits. The roller I used: (ASIN B07X5SV5FD), its a good quality product that should last through many projects. You'll need to seal the edges since water could get into the fiberglass layer. DEI recommends their tape for this purpose but several people had negative things to say about the tape. On the recommendation of another enthusiast, I sealed the edges with RTV. I used loctite grey #5699 ASIN B0794BYCZ2. The pressurized container works in any orientation and made it easy to apply a consistent bead. I masked along my seams so I'd have straight, tidy edges. Again if you work slowly and deliberately, you can get good results. I worked in the silicone with a finger and wore heavy Venom Steel nitrile gloves to keep the chemicals off/out of my body (ASIN B00Y2OFGMW). Good Luck!

Used this as a heat barrier to protect my rockers from the exhaust heat. The heat shielding caught fire and damaged my car. Luckily I was close to the fire department and they put out the fire before the car was totalled. Do not buy.

I purchased this to insulate a “hot spot” above the transmission on the floor of our motor home. While it didn’t totally eliminate the heat, it substantially reduced it to the point that the spot can be touched without fear of blistering.

The adhesive is very strong, so it’s important to have a plan for where you’re going to use any piece of it. I used it for beneath and behind an installed blower in my fireplace. My intent was to reduce the vibration and rattling noise when the blower was operating at half speed. It turns out that this product virtually eliminated ALL noise at the blower’s highest setting.