Schllc Posted June 19 Report Posted June 19 I am in the process of redoing the interior and windows of my plane prior to painting. When I pulled the side panel off the existing insulation has turned to powder, and it needs to be replaced. I didn’t think at the time to look at what thickness would work. Some looked like it’s cut between the frame tubes, and some looks like it goes over the tubes. I plan on doing this myself, so I will do a much better job than the factory, in the gaps and awkward spaces. There are a few options on spruce and it’s sold in 4 square foot increments, however I have no idea how much to order, or which thickness will actually fit everywhere. I would also like to put something on the floor under the carpet if that’s practical/possible. I prefer the non precut versions, but I want the material that will provide the most sound attenuation as possible, I am much less concerned with weight. I am replacing the windows with .25” for sound, so I may as well go the whole 9 yards. Has anyone done this, or do they know what will work? need some help!
dkkim73 Posted June 20 Report Posted June 20 Hi Ray, no idea on the specific questions you asked. I suppose one question would be, can you improve upon it? Or are you constrained by the initially-spec'ed materials? I would be starting from square one, but there's probably a marginal optimization opportunity here that excites Mooney pilots
PT20J Posted June 20 Report Posted June 20 I purchased the material used by the factory from a MSC (Oasis Aero). It is light weight foam with aluminized mylar on one side and an adhesive film on the other side. I got a burn cert for it from Mooney to keep my IA happy. Oasis had a bulk roll sold by the foot - I don't remember the width - and I purchased so many feet. With the interior removed, I measured each section that I would need and cut out paper pieces to scale and played around with the pieces to figure out how many feet to order with the least waste. It worked out great. It's noticeably quieter, and much cooler in the summer and warmer in the winter. 2
Schllc Posted June 20 Author Report Posted June 20 6 hours ago, dkkim73 said: Hi Ray, no idea on the specific questions you asked. I suppose one question would be, can you improve upon it? Or are you constrained by the initially-spec'ed materials? I would be starting from square one, but there's probably a marginal optimization opportunity here that excites Mooney pilots I’m pretty sure I can use anything burn rated, and that fits, I just didn’t think to look at the spacing when the panel was out, so I don’t know what thickness I can use or how much to order. I also don’t think I want to replace with the original material. It literally turned to powder in between the foil sheets. It’s completely gone.
Fritz1 Posted June 20 Report Posted June 20 I did the pilot side of the cabin last year with 1/2" Soundex from Spruce, had the left side panels out chasing an air leak around the WEMAC valve, overall 1/2" felt like a good compromise between insulation, noise attenuation and weight, think Spruce sold that stuff in 4 ft increments, as said before make paper templates and then ballpark footage, maybe call LASAR, OASIS or Maxwell, they will know the total footage needed and may have material sitting there in bulk
LANCECASPER Posted June 23 Report Posted June 23 On 6/19/2025 at 6:28 PM, Schllc said: I am in the process of redoing the interior and windows of my plane prior to painting. When I pulled the side panel off the existing insulation has turned to powder, and it needs to be replaced. I didn’t think at the time to look at what thickness would work. Some looked like it’s cut between the frame tubes, and some looks like it goes over the tubes. I plan on doing this myself, so I will do a much better job than the factory, in the gaps and awkward spaces. There are a few options on spruce and it’s sold in 4 square foot increments, however I have no idea how much to order, or which thickness will actually fit everywhere. I would also like to put something on the floor under the carpet if that’s practical/possible. I prefer the non precut versions, but I want the material that will provide the most sound attenuation as possible, I am much less concerned with weight. I am replacing the windows with .25” for sound, so I may as well go the whole 9 yards. Has anyone done this, or do they know what will work? need some help! I used SoundEx on a coupe of Bravos that I owned. I didn't notice a lot of difference in noise, but the temperature difference was very noticeable. I bought the large sheets and cut it with an electric carving knife. https://www.aircraftspruce.com/catalog/appages/soundex7.php?clickkey=23792
shawnd Posted July 1 Report Posted July 1 I also went with SoundEx, bought it directly from them. I feel like I hear a difference between these new ones compared to the factory installed fiberglass version. I replaced everything inside the cabin. And agree with @LANCECASPER, there is clearly a difference in temperature compared to the previous one. SoundEx ships with all the necessary certificates.
Schllc Posted July 1 Author Report Posted July 1 Hector at aerocomfort told me he ordered 25’ of 52” wide material. This sound about right to you? also, did you use the 1/2” material. If so was it weight or space?
Recommended Posts