Some dry ice in a plastic shopping bag (if you have any left) left on the floor insulation makes it really easy to chip off with a paint scraper. No mess or solvent fumes, leaves the primer in place tooThanks for the suggestions and especially alternatives to Dynamat.
Actually, I was a little surprised to find some kind of sound deadening on the floor panels when working on the Berlina today. For the most part, it tightly adhereing to the floor panels and inner firewall. I had to heat some areas up and scrapebit off as I have a few holes to repair.
I haven't looked at the door panels yet, but will be adding sound deadening to rear seat area and trunk. Probably wheel wells need it also.
I use this stuff on my roof to seal mod-but roofing seams. It looks to me to be very like Dynamat only it sells for a whole lot less. If it will successfully stick to roofing material and survive the elements, I'd suspect that it would work well as sound deadening in an Alfa. Full disclosure: when I mentioned this to some of my Alfa buddies I was shouted into silence. The big bullies insisted that Dynamat had to be better because . . . well, it's Dynamat, it costs more and the company says it's designed for cars. Yeah right. Your experience may differ . . .
I experienced a similar problem, although I was working on a roof rather than an Alfa. I discovered that there are different grades of the "seam-tape". Some are only intended for use underneath more impervious roofing and siding materials. These usually caution that they are not to be left uncovered or they will delaminate, lose adhesiveness, etc. The Peel and Seal product (there are a couple of others) has a lifetime guarantee and, the company claims, can be exposed to elements indefinitely. What's frustrating about these products is that you really have to investigate to find out this kind of information. Sometimes, it's only published on the companies website and not on the product at all. The pro roofers I've talked to suggest that the tape be used with a compatible primer which may encourage adhesion. I haven't tried it long-term but I can say it's definitely sticky stuff and, once applied, is the very devil to remove.I have actually tested a few forms of Bituthene that I use regularly for housing on my project Alfa and none have done very well. Problem is, they don't maintain adhesion with temperature extremes.
....Actually, I was a little surprised to find some kind of sound deadening on the floor panels when working on the Berlina today. For the most part, it tightly adhereing to the floor panels and inner firewall. I had to heat some areas up and scrapebit off as I have a few holes to repair...
Hence the reason to go with a product specifically formulated for automotive use....such as that 3M product.I have actually tested a few forms of Bituthene that I use regularly for housing on my project Alfa and none have done very well. Problem is, they don't maintain adhesion with temperature extremes. There was one of the home application companies that branched into auto sound deadening and abruptly left the market. So while it seems like a great idea and the savings is attractive, I wouldn't gamble unless you are prepared to remove interior stuff. When it's all said and done, the dynamat will be a fraction of the complete restoration.
Absolutely....only if you need to do repairs. In my case...the floor panels were replaced...but the rear seat panel was untouched. The OE material must have been applied when it was heated to a pretty high temperature....to the point of it being very pliable and is very well bonded to the sheet metal....in now way can we replicate that to the same level with the aftermarket products IMO.I started thinking about removing all the old sound deadening material, then I asked myself ... Why? Most of it is well adhered. Maybe apply some of the spray on material on areas that have nothing and replace thick had on the floor, tunnel, firewall.