Dynamat Install Questions

[D02G]

I’m getting ready to install dynamat. Is it best to use the carpet pieces as templates? Any recommendations on the best way to install?

Thanks

[Sdonnel]

If you have not installed your sheet metal permanently yet, consider applying the dynamat before you do the final rivet work. I put my panels in with Cleco's, marked the overlaps and then pulled it all apart. Simply trim and place the dynamat on and roll it with a wall paper seam roller. The tool you get won't last very long. I did all my panels with that skinny little roller and it worked perfectly. In cases where your overlap may be behind a chassis tube, you can always cut one side longer, roll the mat back and press into place once it's in position. Don't forget to seal your metal seams with silicone BEFORE you put your first piece in place. Trust me.

Scott

[egchewy79]

for the footboxes, yes this is a good idea. I actually made cardboard templates of all the footbox aluminum prior to installing the pieces for this exact reason. for the rest of the cockpit, I just held the pieces up the panels, creased or marked it w/ a sharpie, and cut off the excess. if using templates, make sure you mark the correct side. I wasted multiple pieces by marking the wrong side, ending up in a piece the mirror image of what you actually need.

[edwardb]

You can use the carpet as templates if you like. But don't hesitate to use multiple pieces to duplicate. You'll waste a lot of not very cheap Dynamat if you try to exactly duplicate the carpet pieces. You'll also find it's really sticky and large pieces can be a little unwieldy to handle and get positioned properly. Multiple pieces butted tightly together doesn't hurt anything. They sell tape for those joints, although to be honest I've never bothered with it.

[Duke]

Keep it simple, place the largest area/piece down, then pattern the gaps one at a time. It goes pretty quickly. If you try and over complicate it by patterning it all at once, you're likely to get some odd area cuts and gaps. I went right over the rivets.

https://i.postimg.cc/2y1mtzQR/IMG-0009-1.jpg (https://postimg.cc/ctGVgGkX)

[Joecobr]

As Edwardb states, it works very well if you cut out manageable large pieces and fill in the irregular bits afterwards. I found it easy if you lay down one edge and peel the backing as you go. No need to cover the seams. They are barely noticeable and will be covered with carpet.

[D02G]

Keep it simple, place the largest area/piece down, then pattern the gaps one at a time. It goes pretty quickly. If you try and over complicate it by patterning it all at once, you're likely to get some odd area cuts and gaps. I went right over the rivets.

https://i.postimg.cc/2y1mtzQR/IMG-0009-1.jpg (https://postimg.cc/ctGVgGkX)

How much dynamat did you use for interior. I bought a box from Amazon with 9 sheets (36 sq ft), but wondering if I should buy more?

[phileas_fogg]

I used almost every bit of 2 of those 9-sheet boxes to cover the cockpit, trunk, and firewall.

Like Duke said, just stick it right over the rivets; once the carpet is on you'll never know.


John

[cv2065]

I flipped the dynamat over to the white paper backing side and traced the carpet pieces to get the most out of the roll. Aside from initially tracing them backwards (don't do that), it worked out great. I think I used 3 rolls in total for everything 36 sqft/roll. Had some left over..maybe 1/4 roll.

[Jdav]

FYI - the carpet is cut oversized, so if using that as a template, your dynamat will be oversized as well.

[Duke]

I used 1.5 boxes for mine.