What should a person use as a pre-cleaner on the metal door panels andinterior roof panels before installing insulation?Rubbing alcohol,MEK,or what works best?
Clean the mounting surface with a quick-drying, residue-free solvent. Remove all dirt, grease, oil, wax, moisture and rust to ensure a permanent bond between the Dynamat and the mounting surface.
Step 2: Size and Cut
Using a razor knife or scissors, cut the Dynamat sheet to the desired shape and size (you may find a cardboard or paper template helpful.) Remove the blue release liner from the back of the Dynamat and apply the Dynamat to the prepared surface. On large surfaces, remove the release liner in sections, working your way down and across the panel.
Step 3: Apply the material
Apply the Dynamat to the mounting surface with a Dynamat roller tool. Take the roller tool and work the Dynamat into all contours of the metal panel. Using a razor knife, poke holes in any air pockets that may have formed between the panel and the Dynamat. Work the air out with the roller tool. Eliminating air pockets ensures lasting adhesion to the panel to give maximum damping effect.
I would use mineral spirits. That will clean the sheet metal and be less dangerous than methyl ethyl ketone. Denatured alcohol might work, not rubbing alcohol. Rubbing alcohol is only 70 to 80% alcohol, I think it has some ingredients in it that would leave a residue that you wouldn't want.
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