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44

12 mil vapor barrier

Skip it

Prices mostly outside the sweet spot ($22.98–$371.43) — this niche doesn't clear our bar today.

Market size 23Growth 44Conversion 42Competition 54Returns 59Price range 22Avg price 61Brand share 44Review moat 92Quality gap 24

Review moat

Great162.31

avg incumbent reviews — the moat a new listing must climb

Avg price

Good$141.87

avg listing price — sweet spot $15–$100

Returns

Good2.6%

return rate — above 5% kills the launch gate

Competition

Good53%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+15.2%

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

Brand share

Okay78%

top-5 brand share — brands hold most of the demand

Conversion

Okay3.3%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$92K

$92K/yr · 19K searches

Price range

Bad$22.98–$371.43

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

According to Flapen's Amazon United States niche tracking, 12 mil vapor barrier is a $92K/yr Amazon United States market (19K searches/yr). The top 5 brands hold 78% of demand. Verdict: Skip it — 44/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

12 mil vapor barrier market data

Units sold / yr
1K–1K
avg 0–100/product
Revenue / yr
$142K–$177K
units × avg price
Conversion rate
3.3%
Avg BSR
#175
Page quality
0%
Prime
88%
Sponsored
85%
Out of stock
5.0%
Avg brand age
45 months
Avg seller age
214 days

Competition & brand share

The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 rising

Sellers

15

Top-5 brand share

78%

Top 20: 100%

Top-5 click share

53%

Top 20: 93%

Open market

14%

  • SPIRECOVER33%
  • ALORAIR20%
  • PureSpace Armor10%
  • SUNSHORE8%
  • Crawldryer7%
  • Crawl Space DIY7%
  • Open — no brand owns it (5 brands, 14%)

Demand

Weekly Amazon search volume, last 17 weeks — +15.2% search growth over the last 90 days.
450350Spike '26Prime Day '26Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26Jul '26

Top 12 mil vapor barrier search terms

  • 12 mil vapor barrier for crawl space8K/yr
  • 12 mil vapor barrier7K/yr
  • 12 mil plastic sheeting5K/yr
All search terms

Top 12 mil vapor barrier products on Amazon

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

0%10%$9K20%$18K30%$28K40%$37K101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about 12 mil vapor barrier

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

What buyers love

Adhesion/Stickiness16%

“Get good tape to go with this purchase”

Quality-Overall16%

“Great quality, used for encapsulation around piers”

Value For Money8%

“Great price point”

Advertised Vs Actual Product7%

“Did the job as advertised”

Strength7%

“Very strong”

Durability7%

“Very durable”

Thickness6%

“Good thick plastic”

Ease Of Use5%

“Easy to use”

Efficiency5%

“This barrier worked great for me”

Stitch/Finish/Polish4%

“seals up the seam great”

What buyers complain about

Thickness31%

“The plastic is thicker than what some OEM manufacturers use”

Adhesion/Stickiness13%

“sticks like crazy”

Stitch/Finish/Polish6%

“We had some seams that had come loose because the original tape used was thinner”

Smell6%

“no off smell definitely thick would recommend opening it up before you go into a tight spot”

Material Quality6%

“Tough material”

Durability4%

“leading to long term durability questions”

Top return reasons

Adhesion/Stickiness13%
Value For Money13%
Color12%
Thickness11%
Size-Overall11%
Material Quality7%
Functionality-Overall5%
Advertised Vs Actual Product5%
Defective Material/Parts4%
Thin4%

Common questions

Is 12 mil vapor barrier profitable to sell on Amazon United States?
The niche generates $92K/yr across 26 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +15.2%. Flapen's verdict: Skip it (44/100).
How competitive is the 12 mil vapor barrier niche?
11 brands and 15 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 78% of demand.
What do buyers complain about in 12 mil vapor barrier?
Top complaints mined from reviews: Thickness, Adhesion/Stickiness, Stitch/Finish/Polish. The return rate is 2.6%.
What does it cost to enter the 12 mil vapor barrier niche?
Listings span $22.98–$371.43; the average listing price is $141.87 (sweet spot $15–$100). The average incumbent carries 162 reviews — the moat a new listing must climb.