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 Chances are you'll get a few...  Chances are you'll get a few air bubbles under the mat, which if left will reduce its effect. Using a razor blade, I poked a hole in the mat and used the roller tool to "push" the air out, ensuring total adhesion.  Here's the completed roof,...  Here's the completed roof, with all internal metalwork painted semi-gloss black. Complete coverage, rather than random sections of mat, will provide better insulation.  I took the opportunity to...  I took the opportunity to order this roller tool along with my Dynamat, simplifying installation and making light work of pressing the mat into contours.  Starting with the underside...  Starting with the underside of the roof, I trimmed and installed the Dynamat working rearward from the front. I was able to work the mat-tricky once the backing is removed and it's extremely sticky-above the central dome light mounting rib for total coverage.  The floor was tackled next....  The floor was tackled next. Up till now I hadn't used patterns, but the firewall was complicated, with the hole for the steering column, cutouts for various bolts, and the high/low beam foot switch all needing to be correctly placed, so a paper template was made, then transferred to the mat. Note, I also cut the mat around the seat mounting points and ensured inspection plates were still accessible.  Dynamat is flexible but only...  Dynamat is flexible but only to a point, and doesn't stretch much, so forming it over the shaped floorpan while retaining its straight edges was a challenge. Working slowly and methodically is the answer, taking care not to create large wrinkles, but rather a series of smaller ones that can be somewhat "ironed out" using the roller tool.  On the firewall, the mat was...  On the firewall, the mat was carefully trimmed to the exact diameter of the steering column support, so that it sandwiches the firewall and not the mat too. The same was done at the rear seatbelt mounts and anywhere a bolt passes through the panel, meaning they can be tightened without crushing the Dynamat.  The rear of the floor was...  The rear of the floor was easier, as I was able to mark any trimming required directly on the Dynamat.  The complicated shapes around...  The complicated shapes around the trans tunnel and the raised floor section under the rear seat meant I had to push the mat into place then carefully trim wedge sections out using the razor knife, so as not to overlap the mat but at the same time not leave gaps.
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