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Soundex ™ Premium Aircraft Soundproofing & Materials Package

From $13.50 to $366.00
Number Aircraft Model Unit of Measure Basic Kit
(sidewall above floor/roof)
Price Buy
SX-10001" x 36" x 48" SoundEx SheetSheet
SX-7503/4" x 36" x 48" SoundEx SheetSheet
SX-6003/4" x 36" x 48" Black Mat
(Flame certified for Firewall)
SX-5001/2" x 48" Black Mat
(Flame certified for Firewall)
Per Foot
SX-2501/4" x 48" Black MatPer Foot
SX-1251/8" x 36" x 48" Black MatPer Foot
SX-5101/2" 36" x 48" Belly MatPer Sheet
SXT-2002" Aluminum Foil TapePer Roll
SX-1357SoundEx Glue6 oz.
Subtotal $0.00
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For Bulk Material

SoundEx™ is a premium aircraft soundproofing / insulation that incorporates excellent vibration damping and noise absorption properties. SoundEx™ is a superior product compared to other products on the market because of it's thermal qualities, adds less weight to aircraft (6.11oz. per sq. ft. for 1" thickness and 5.8 oz. per sq. ft. for 3/4" thickness), and affordability. Stop the yelling and make flying fatigue a thing of the past. Improve your quality of flight with SoundEx™.

Decibel Reduction Data
Decibel reductions will vary depending upon how well your aircraft is currently insulated. Our latest data indicate that you should expect noise level reduction from 4-7 dB(a) and 10-15 dB(c). From singles and light twins to corporate jets, SoundEx™ is the noise reduction option of choice. Pilots and passengers can fly and communicate in comfort.

Flammability Requirements
All materials are manufactured to meet requirements for FAR 23:856 / FAR 25:856 Part II. Aircraft specific testing may be required for return to service.
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Looking for something to replace old fiberglass in C414. This was the perfect approved alternative. Easy to install evening tight spaces.

Gregory W Verified Purchase

SOUNDEX SHEET 1" X 36" X 48"

January 14, 2022

Very good product. Order pre marked to fit your plane, it saves a lot of time.

Brad D Verified Purchase

SOUNDEX SHEET 1" X 36" X 48"

August 25, 2021

cut like butter with electric knife, very easy to use and looked awesome when done. ordering 3 more sheets for rest of the plane

Brent D
September 23, 2019

this is a very heavy product. We only used this in the firewall and the side walls forward of the pilot/co-pilot seats.

Moon S Verified Purchase

SOUNDEX SHEET 1" X 36" X 48"

September 15, 2021


Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the Soundex Premium Soundproofing have aluminum backing?

Yes, it does have an aluminum backing.

Q: Does the Soundex soundproofing material have self adhesive? If not, what adhesion do you recommend?

No, it does not have an adhesive attached. 3M weatherstrip adhesive can be used, our stock p/n 09-27200.

Q: Does one glue the aluminum side or the black side of the soundex to the aircraft panels?

The black side is glued to the panels.

Q: SX 125. very confusing. if the width is 48oor 36 than 1 foot is in reality 4sq.ft or 3sq ft = $16.75 OR 12x 12 =$16.50

This is sold as a 36 x 48 piece.

Q: SX250: IF I ORDER 1FT, WILL I GET 12 x 48?

Yes, that is correct.

Q: Is the SX-1000 the 3 layer product? Silver, foam, black?

Yes, this product does have the 3 layers.

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