Is insulation knife profitable to sell on Amazon United States?

The niche generates $138K/yr across 22 tracked products. 4 of 8 products launched in the last 360 days are still selling. 90-day search growth is -5.6%. Flapen's verdict: Worth a look (51/100).

How competitive is the insulation knife niche?

15 brands and 35 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 65% of demand.

What do buyers complain about in insulation knife?

Top complaints mined from reviews: Sharpness, Ease Of Use, Functionality-Overall. The return rate is 1.1%.

When does demand for insulation knife peak?

Demand is steady year-round — the busiest month runs 1.4× the quietest.

What does it cost to enter the insulation knife niche?

Listings span $9.39–$40.65; the average listing price is $17.75 (sweet spot $15–$100). The average incumbent carries 249 reviews — the moat a new listing must climb.

insulation knife

Worth a look

Shows low returns (1.1%), but soft demand (-5.6% this quarter) keeps it on the watch list.

Returns

Great1.1%

return rate — above 5% kills the launch gate

Review moat

Great248.91

avg incumbent reviews — the moat a new listing must climb

Avg price

Great$17.75

avg listing price — sweet spot $15–$100

Price range

Great$9.39–$40.65

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

Brand share

Good65%

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

Conversion

Good5.8%

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

Competition

Okay61%

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

Market size

Okay$138K

$138K/yr · 134K searches

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Growth

Bad-5.6%

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

Signals Low Review Barrier

According to Flapen's Amazon United States niche tracking, insulation knife is a $138K/yr Amazon United States market (134K searches/yr). The top 5 brands hold 65% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 29, 2026 · scored weekly · How we score niches

insulation knife market data

Units sold / yr: 8K–10K; avg 250–500/product
Revenue / yr: $142K–$178K; units × avg price
Conversion rate: 5.8%
Avg BSR: #263
Page quality: 0%
Prime: 100%
Sponsored: 86%
Out of stock: 3.1%
Avg brand age: 67 months
Avg seller age: 170 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 falling

Sellers

Top-5 brand share

65%

Top 20: 100%

Top-5 click share

61%

Top 20: 98%

Open market

26%

ykpiw21%
Goldblatt13%
Red Devil13%
Pinoze10%
KLEIN TOOLS8%
minyuexia8%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.6% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top insulation knife search terms

insulation knife88K/yr -4.0%5.7% conv.
insulation knife for cutting insulation10K/yr +8.9%6.3% conv.
cuchillo para insulation7K/yr +1.2%2.2% conv.
insulation saw6K/yr -10.6%3.4% conv.
insulation cutting knife4K/yr +16.0%4.4% conv.
insulation cutter5K/yr -25.4%2.2% conv.
rockwool insulation knife4K/yr -21.5%12.7% conv.
fiberglass insulation knife4K/yr -0.4%5.7% conv.
rockwool knife3K/yr -5.9%15.8% conv.
rockwool insulation cutting knife2K/yr -66.0%9.3% conv.

All search terms

Top insulation knife 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.

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

All 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

YKPIW Insulation Knife with Measuring Scale Stainless Steel Double-Sided Serrated Insulation Cutter Tool with Nylon Sheath for Rockwool Foam Fiberglass Drywall Lawn and Garden

ykpiw$14.044.8★81 rev

Goldblatt Rockwool Insulation Knife Sod Cutter Tool for Cutting Fiberglass

Goldblatt$18.484.6★477 rev

Red Devil 4609 8 Inch Batting Knife High-Carbon Steel Blade Durable Hardwood Handle for Precision Insulation Cutting

Red Devil$14.044.4★401 rev

KLEIN TOOLS DK16 Double-Edged Duct Knife Serrated Stainless Steel Blade Designed for Duct Board and Insulation Fixed Blade Knife with Sheath 5-1/2-Inch

KLEIN TOOLS$20.054.8★114 rev

minyuexia Insulation Knife & Sod Cutter Knife 11.14-Inch Stainless Steel Sharp Double Sided Blade for foam insulation Rockwool and Lawn Repair

minyuexia$12.734.6★80 rev

Newest

by launch date

YKPIW Insulation Knife with Measuring Scale Stainless Steel Double-Sided Serrated Insulation Cutter Tool with Nylon Sheath for Rockwool Foam Fiberglass Drywall Lawn and Garden

ykpiw$14.0481 rev

5mo ago

wfljl Multi-Purpose Insulation Knife with Sheath 16.8 Double-Sided Serrated Stainless Steel Blade for Cutting Foam Rockwool Fiberglass Insulation Foam Board and Sod

wfljl$9.7229 rev

7mo ago

Dexter-Russell 8 Tiger Edge Insulation Knife Soft Black Handle

Dexter$40.657 rev

8mo ago

Dexter-Russell 5.5 Scalloped Insulation Knife Slip-Resistant Handle

Dexter$29.027 rev

8mo ago

KLEIN TOOLS DK16 Double-Edged Duct Knife Serrated Stainless Steel Blade Designed for Duct Board and Insulation Fixed Blade Knife with Sheath 5-1/2-Inch

KLEIN TOOLS$20.05114 rev

9mo ago

What buyers say about insulation knife

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

What buyers love

Sharpness14%

“It arrived sharp”

Quality-Overall11%

“Awesome quality”

Value For Money10%

“Worth every penny”

Ease Of Use9%

“Easy to use”

Grip7%

“It has a nice comfortable grip”

Advertised Vs Actual Product6%

“Works as advertised”

Strength5%

“The blade feels strong”

Durability5%

“Well made and durable”

Measurement/Reading Accuracy4%

“the measuring scale is a nice bonus”

Precision Of Cut4%

“cuts very well”

What buyers complain about

Sharpness13%

“Works well just doesn't stay sharp for long”

Ease Of Use9%

“wasnt able to do with ease”

Functionality-Overall8%

“nothing worked as good as this knife”

Quality-Overall8%

“after extended use it feels a little cheap”

Advertised Vs Actual Product5%

“I honestly believe if one of the pictures showed that the sheath was paper. There would be a lot fewer sales”

Precision Of Cut4%

“Everything else has been cutting like butter”

Material Quality4%

“Sheath seems like a tough Cordura material”

Hard Feel4%

“Very hard pass on this one”

Color4%

“But dont like it is dark”

Size-Overall3%

“it is a bit bigger than I pictured or was pictured”

Top return reasons

Size-Overall23%

Functionality-Overall15%

Advertised Vs Actual Product13%

Sharpness11%

Value For Money4%

Weight Heavy4%

Product Condition4%

Compatibility-Overall2%

Comfort-Overall2%

Material Quality2%

Common questions

Is insulation knife profitable to sell on Amazon United States?: The niche generates $138K/yr across 22 tracked products. 4 of 8 products launched in the last 360 days are still selling. 90-day search growth is -5.6%. Flapen's verdict: Worth a look (51/100).
How competitive is the insulation knife niche?: 15 brands and 35 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 65% of demand.
What do buyers complain about in insulation knife?: Top complaints mined from reviews: Sharpness, Ease Of Use, Functionality-Overall. The return rate is 1.1%.
When does demand for insulation knife peak?: Demand is steady year-round — the busiest month runs 1.4× the quietest.
What does it cost to enter the insulation knife niche?: Listings span $9.39–$40.65; the average listing price is $17.75 (sweet spot $15–$100). The average incumbent carries 249 reviews — the moat a new listing must climb.