---
title: "sound deadening spray foam — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/sound-deadening-spray-foam"
last_updated: "2026-07-14T01:51:22.373Z"
locale: en
meta:
  description: "brand-locked demand (top 5 brands take 100% of clicks) — sound deadening spray foam doesn't clear our bar today."
  "og:description": "brand-locked demand (top 5 brands take 100% of clicks) — sound deadening spray foam doesn't clear our bar today."
  "og:title": "sound deadening spray foam — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
---

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# **sound deadening spray foam**

**Skip it**

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 28Growth 23Conversion 62Competition 22Returns 93Price range 53Avg price 92Brand share 0Review moat 25Quality gap 43

**Returns**

**Great****1.1%**

return rate — above 6% kills the launch gate

**Avg price**

**Great****$54.08**

avg listing price — sweet spot $15–$100

**Conversion**

**Good****5.4%**

search→purchase rate — share of searches ending in a sale

**Price range**

**Good****$8.98–$169.59**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$124K**

$124K/yr · 42K searches

**Review moat**

**Bad****4,612.5**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-4.5%**

90-day search growth — must beat 0% to launch

**Competition**

**Bad****74%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****100%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**4 **▼falling

**Sellers**

**75**

**Top-5 brand share**

**100%**

**Open market**

**0%**

- Design Engineering86% - KILMAT7% - Rust-Oleum5% - Magic Chems2%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%15%$19K30%$37K45%$56K60%$74K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 14 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Design Engineering 50220 Boom Mat Deadening Spray | Spray-On Sound Deadener for Cars | Eliminate Road Noise | Dampen Vibrations | Enhance Car Audio | Covers 20 Sq Ft](https://m.media-amazon.com/images/I/412WQHNTWrL.jpg)**Design Engineering 50220 Boom Mat Deadening Spray | Spray-On Sound Deadener for Cars | Eliminate Road Noise | Dampen Vibrations | Enhance Car Audio | Covers 20 Sq Ft**Design Engineering**$19.53**4.4★1,072 rev](https://www.amazon.com/dp/B001URKV0G) [2![Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 2mm 12.5 x 24 (Pack of 10)](https://m.media-amazon.com/images/I/51aQJ0GBgXL.jpg)**Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 2mm 12.5 x 24 (Pack of 10)**Design Engineering**$117.34**4.6★298 rev](https://www.amazon.com/dp/B0039Z3SL6) [3![Design Engineering Inc. Boom Mat Liquid Deadening Brush On | Thermal Acoustic Control | 1 Liter - up to 20 sq ft coverage](https://m.media-amazon.com/images/I/51rKlTEYOCL.jpg)**Design Engineering Inc. Boom Mat Liquid Deadening Brush On | Thermal Acoustic Control | 1 Liter - up to 20 sq ft coverage**Design Engineering**$29.71**4.6★13 rev](https://www.amazon.com/dp/B0DXLKCW3M) [4![Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)](https://m.media-amazon.com/images/I/316FCK8fqDL.jpg)**Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)**Design Engineering**$64.95**4.4★1,072 rev](https://www.amazon.com/dp/B088SNMFVS) [5![Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray 15 oz Black](https://m.media-amazon.com/images/I/412XzjH78jL.jpg)**Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray 15 oz Black**Rust-Oleum**$8.98**4.6★7,524 rev](https://www.amazon.com/dp/B003CT49AS)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Magic Chems Spray Foam Insulation Can (1 Pack-25.4 oz) Expanding Foam Sealant for Thermal & Acoustic Insulation Closed Cell High Density Spray Foams Covers up to 20 Board feet/sq. ft.](https://m.media-amazon.com/images/I/41E7Pd539XL.jpg)**Magic Chems Spray Foam Insulation Can (1 Pack-25.4 oz) Expanding Foam Sealant for Thermal & Acoustic Insulation Closed Cell High Density Spray Foams Covers up to 20 Board feet/sq. ft.**Magic Chems**$15.44**611 rev1y ago](https://www.amazon.com/dp/B0DNXTRWXH) [![Design Engineering Inc. Boom Mat Liquid Deadening Brush On | Thermal Acoustic Control | 1 Liter - up to 20 sq ft coverage](https://m.media-amazon.com/images/I/51rKlTEYOCL.jpg)**Design Engineering Inc. Boom Mat Liquid Deadening Brush On | Thermal Acoustic Control | 1 Liter - up to 20 sq ft coverage**Design Engineering**$29.71**13 rev1y ago](https://www.amazon.com/dp/B0DXLKCW3M) [![DEI ATAC Thermal Acoustic Coating Ceramic Heat Sound Barrier Spray 15 oz](https://m.media-amazon.com/images/I/4185TDwPlUL.jpg)**DEI ATAC Thermal Acoustic Coating Ceramic Heat Sound Barrier Spray 15 oz**Design Engineering**$28.41**25 rev1y ago](https://www.amazon.com/dp/B0DXLWQR23) [![Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)](https://m.media-amazon.com/images/I/316FCK8fqDL.jpg)**Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)**Design Engineering**$64.95**1,072 rev6y ago](https://www.amazon.com/dp/B088SNMFVS) [![Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (3 Pack)](https://m.media-amazon.com/images/I/51LYLuRhvvL.jpg)**Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (3 Pack)**Design Engineering**$44.58**530 rev7y ago](https://www.amazon.com/dp/B07TTDRP6H)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 2mm 12 x 12.5 (Pack of 8)](https://m.media-amazon.com/images/I/51rezy0qa1L.jpg)**Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 2mm 12 x 12.5 (Pack of 8)**Design Engineering**$56.27**4.6★**▲ 121%**](https://www.amazon.com/dp/B001ELW8JA) [![Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)](https://m.media-amazon.com/images/I/316FCK8fqDL.jpg)**Design Engineering 050220 Boom Mat Spray-on Sound Deadening to Reduce Unwanted Road Noise and Vibration 18 Ounce (4 Pack)**Design Engineering**$64.95**4.4★**▲ 107%**](https://www.amazon.com/dp/B088SNMFVS) [![Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 12 x 12.5 x 2mm (Pack of 4)](https://m.media-amazon.com/images/I/41vVimboJKL.jpg)**Design Engineering Boom Mat Sound Deadening Material with Adhesive Backing | 12 x 12.5 x 2mm (Pack of 4)**Design Engineering**$37.97**4.6★**▲ 85%**](https://www.amazon.com/dp/B000MY3NI0) [![Magic Chems Spray Foam Insulation Can (1 Pack-25.4 oz) Expanding Foam Sealant for Thermal & Acoustic Insulation Closed Cell High Density Spray Foams Covers up to 20 Board feet/sq. ft.](https://m.media-amazon.com/images/I/41E7Pd539XL.jpg)**Magic Chems Spray Foam Insulation Can (1 Pack-25.4 oz) Expanding Foam Sealant for Thermal & Acoustic Insulation Closed Cell High Density Spray Foams Covers up to 20 Board feet/sq. ft.**Magic Chems**$15.44**4.0★**▲ 47%**](https://www.amazon.com/dp/B0DNXTRWXH) [![Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray 15 oz Black](https://m.media-amazon.com/images/I/412XzjH78jL.jpg)**Rust-Oleum 248656 Professional Grade Rubberized Undercoating Spray 15 oz Black**Rust-Oleum**$8.98**4.6★**▲ 42%**](https://www.amazon.com/dp/B003CT49AS)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -4.5% search growth over the last 90 days.

1K600Spike '24Spike '26 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**25%

*“Affordable quality product”*

**Assembly/Installation**11%

*“Easy installation”*

**Ease Of Use**8%

*“Easy to use”*

**Audio Quality**6%

*“They sound so much better”*

**Advertised Vs Actual Product**6%

*“As described”*

**Efficiency**6%

*“A Must Have For Car Restorations”*

**Value For Money**5%

*“Worth it”*

**Noise Level**5%

*“Really helps with sound”*

**Adhesion/Stickiness**5%

*“Very good- excellent adhesive”*

**Heating**2%

*“Handy heat barrier”*

### **What buyers complain about **

**Noise Level**10%

*“it was very noisy inside was terrible”*

**Spray/Flow**9%

*“At $31 a can this stuff sprays terrible”*

**Adhesion/Stickiness**6%

*“stick just can't get”*

**Thickness**6%

*“Its definitely thicker than I expected”*

**Smell**5%

*“however for some reason it has a very awful smell”*

**Audio Quality**5%

*“Sound deaf”*

**Add-Ons/Attachments**4%

*“red accessory nozzles do not connect securely”*

**Value For Money**4%

*“A little more expensive”*

**Quality-Overall**3%

*“This stuff is overrated”*

**Advertised Vs Actual Product**3%

*“It didnt jsut meet the description”*

### **Top return reasons **

**Thin**13%

**Assembly/Installation**10%

**Adhesion/Stickiness**9%

**Size-Overall**8%

**Material Quality**6%

**Defective Material/Parts**6%

**Thickness**6%

**Value For Money**6%

**Weight Heavy**5%

**Audio Quality**4%