Is gutter sealant profitable to sell on Amazon United States?

The niche generates $103K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +34.4%. Flapen's verdict: Worth a look (52/100).

How competitive is the gutter sealant niche?

8 brands and 88 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 89% of demand.

What do buyers complain about in gutter sealant?

Top complaints mined from reviews: Functionality-Overall, Adhesion/Stickiness, Leak-Proof. The return rate is 0.8%.

When does demand for gutter sealant peak?

Demand peaks in Aug–Sep–Oct; the busiest month runs 6.5× the quietest.

What does it cost to enter the gutter sealant niche?

Listings span $7.64–$28.95; the average listing price is $14.41 (sweet spot $15–$100). The average incumbent carries 7,239 reviews — the moat a new listing must climb.

gutter sealant

Worth a look

Shows low returns (0.8%), but a deep review moat (7,239 avg reviews) keeps it on the watch list.

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Conversion

Great8.9%

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

Avg price

Good$14.41

avg listing price — sweet spot $15–$100

Price range

Good$7.64–$28.95

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

Growth

Good+34.4%

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

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay64%

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

Brand share

Okay89%

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

Market size

Okay$103K

$103K/yr · 81K searches

Review moat

Bad7,239.33

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, gutter sealant is a $103K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Aug–Sep–Oct. Verdict: Worth a look — 52/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

gutter sealant market data

Units sold / yr: 6K–8K; avg 250–500/product
Revenue / yr: $86K–$115K; units × avg price
Conversion rate: 8.9%
Avg BSR: #136
Page quality: 0%
Prime: 100%
Sponsored: 72%
Out of stock: 0.0%
Avg brand age: 69 months
Avg seller age: 156 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 falling

Sellers

Top-5 brand share

89%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

Titebond34%
DAP25%
Flex Seal18%
TOOLTROOPERS6%
GORILLA6%
OSI - HENKEL CORPORATION5%
Open — no brand owns it (2 brands, 6%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +34.4% search growth over the last 90 days.

Peak months: Aug, Sep, Oct · busiest ÷ quietest = 6.5×

Open Trend

Top gutter sealant search terms

gutter sealant42K/yr +33.8%6.7% conv.
gutter sealant for rain gutters13K/yr +47.8%7.6% conv.
gutter seal6K/yr +39.0%5.2% conv.
gutter caulk5K/yr +33.0%9.8% conv.
gutter sealer4K/yr +27.4%7.3% conv.
gutter seam sealer3K/yr +48.0%7.3% conv.
best rain gutter sealant3K/yr +25.8%2.7% conv.
gutter leak sealant3K/yr +4.3%4.8% conv.
rain gutter sealant2K/yr +6.8%8.3% conv.

All search terms

Top gutter sealant 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 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Titebond 9.5 Oz. WeatherMaster Gutter & Seam Sealant 7321 - White

Titebond$10.634.5★110 rev

DAP Dynaflex Gutter & Narrow Seam Advanced Elastomeric Waterproofer White 4.5 Oz (7079818399)

DAP$7.644.4★243 rev

Flex Seal 14 oz Clear Stop Leaks Instantly Transparent Waterproof Rubber Spray On Sealant Coating Perfect for Gutters Wood RV Campers Roof Repair Skylights Windows and More

Flex Seal$14.344.4★39,391 rev

Titebond WeatherMaster Metal Roof Sealant Silver Premium Polymer Caulk for Aluminum Copper Galvanized Steel & Coated Metals UV-Resistant 62611 9.5 Oz. Cartridge

Titebond$10.564.6★434 rev

Flex Caulk Waterproof & Weatherproof Hybrid Polymer Sealant Strong Paintable Indoor Outdoor Bath Shower Sink Window Baseboards Door RV Roof Wood Auto & Marine Clear 6.6 oz 1-Pack

Flex Seal$19.514.5★1,943 rev

Newest

by launch date

ECOHomes Aluminum Butyl Tape Waterproof Aluminum Foil Tape for Leaks (2 Inch Wide) | Butyl Seal Tape for Roofs Gutter Repair Gutter Holes Pipes Metal Roof Patch RV Plumbing and Outdoor Sealing

ECOHomes$12.7854 rev

10mo ago

TITANPATCH PRO Waterproof Sealant Tape White 4 x10 Stops Leaks Fast & Stays Sealed for 15+ Years Sticks to RVs Roofs Pools Boats Gutters Built for Harsh Weather (-40F to 190F)

TOOLTROOPERS$17.05431 rev

10mo ago

TITANPATCH PRO Waterproof Sealant Tape White 4 x20 Stops Leaks Fast & Stays Sealed for 15+ Years Sticks to RVs Roofs Pools Boats Gutters Built for Harsh Weather (-40F to 190F)

TOOLTROOPERS$23.84431 rev

1y ago

Flex Caulk Waterproof & Weatherproof Hybrid Polymer Sealant Strong Paintable Indoor Outdoor Bath Shower Sink Window Baseboards Door RV Roof Wood Auto & Marine Clear 6.6 oz 1-Pack

Flex Seal$19.511,943 rev

2y ago

DAP AMP Gutter and Flashing Sealant Clear 9 Oz (7079800765)

DAP$13.1025 rev

3y ago

What buyers say about gutter sealant

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

What buyers love

Quality-Overall16%

“Better than other brands I have used”

Leak-Proof13%

“No leaking”

Adhesion/Stickiness11%

“it sticks well”

Efficiency10%

“Works great to seal”

Advertised Vs Actual Product8%

“As advertised”

Ease Of Use7%

“Easy to use”

Value For Money6%

“Good price”

Water Resistance4%

“Water proof”

Ease Of Cleaning3%

“Easy to use, just clean the area & spray”

Spray/Flow2%

“Clear spray-on sealant”

What buyers complain about

Functionality-Overall14%

“Didnt work as expected”

Adhesion/Stickiness12%

“Bad adhesive”

Leak-Proof11%

“which was leaking”

Color7%

“If this was white it would have looked pretty bad”

Ease Of Use5%

“Hard to use”

Water Resistance5%

“It didn't seem to stick the way I expected it to nor was it very waterproof”

Smell4%

“But such a big smell that last for over a week”

Value For Money4%

“a little pricey”

Thickness3%

“Very thick, difficult to squeeze out”

Spray/Flow3%

“Didn't flow well”

Top return reasons

Color18%

Value For Money11%

Functionality-Overall11%

Adhesion/Stickiness9%

Advertised Vs Actual Product9%

Size-Overall8%

Defective Material/Parts7%

Leak-Proof7%

Dispensing Mechanism3%

Material Quality2%

Common questions

Is gutter sealant profitable to sell on Amazon United States?: The niche generates $103K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +34.4%. Flapen's verdict: Worth a look (52/100).
How competitive is the gutter sealant niche?: 8 brands and 88 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 89% of demand.
What do buyers complain about in gutter sealant?: Top complaints mined from reviews: Functionality-Overall, Adhesion/Stickiness, Leak-Proof. The return rate is 0.8%.
When does demand for gutter sealant peak?: Demand peaks in Aug–Sep–Oct; the busiest month runs 6.5× the quietest.
What does it cost to enter the gutter sealant niche?: Listings span $7.64–$28.95; the average listing price is $14.41 (sweet spot $15–$100). The average incumbent carries 7,239 reviews — the moat a new listing must climb.