Is foundation sealant profitable to sell on Amazon United States?

The niche generates $95K/yr across 12 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +72.8%. Flapen's verdict: Skip it (48/100).

How competitive is the foundation sealant niche?

7 brands and 40 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in foundation sealant?

Top complaints mined from reviews: Color, Value For Money, Quality-Overall. The return rate is 1.0%.

When does demand for foundation sealant peak?

Demand peaks in Apr–Jun–Jul; the busiest month runs 3.3× the quietest.

What does it cost to enter the foundation sealant niche?

Listings span $6.63–$199.11; the average listing price is $64.52 (sweet spot $15–$100). The average incumbent carries 2,179 reviews — the moat a new listing must climb.

foundation sealant

Skip it

Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible1.0%

return rate — above 5% kills the launch gate

Avg price

Great$64.52

avg listing price — sweet spot $15–$100

Growth

Great+72.8%

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

Conversion

Good5.0%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Price range

Okay$6.63–$199.11

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

Review moat

Okay2,178.92

avg incumbent reviews — the moat a new listing must climb

Market size

Bad$95K

$95K/yr · 29K searches

Competition

Bad78%

top-5 click share — a locked-up shelf

Brand share

Bad95%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, foundation sealant is a $95K/yr Amazon United States market (29K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Apr–Jun–Jul. Verdict: Skip it — 48/100.

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

foundation sealant market data

Units sold / yr: 2K–2K; avg 100–250/product
Revenue / yr: $97K–$129K; units × avg price
Conversion rate: 5.0%
Avg BSR: #191
Page quality: 0%
Prime: 92%
Sponsored: 75%
Out of stock: 0.0%
Avg brand age: 72 months
Avg seller age: 173 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 flat

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

Liquid Rubber76%
Tufinein6%
DAP5%
AMES5%
matvio3%
EverBond2%
Open — no brand owns it (1 brand, 2%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +72.8% search growth over the last 90 days.

Peak months: Apr, Jun, Jul · busiest ÷ quietest = 3.3×

Open Trend

Top foundation sealant search terms

foundation sealant12K/yr +55.1%4.1% conv.
foundation sealer5K/yr +205.7%1.7% conv.
liquid rubber foundation sealant5K/yr +37.1%6.9% conv.
foundation sealant exterior2K/yr +311.9%0.8% conv.
foundation waterproofing5K/yr -13.2%1.7% conv.

All search terms

Top foundation 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 12 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black 1 Gallon

Liquid Rubber$59.004.6★3,365 rev

Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black 5 Gallon

Liquid Rubber$158.964.6★3,365 rev

Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black 2.5 Gallon

Liquid Rubber$98.224.6★3,365 rev

Liquid Rubber Waterproof Sealant DIY Leak Repair Coating for Flat Metal & Low Slope Roofs Foundations Gutters & More Flexible Protective Membrane - Black - 1 Quart

Liquid Rubber$34.554.4★4,134 rev

DAP Concrete and Mortar Filler and Sealant Gray 10.1 Oz (7079818096)

DAP$6.634.5★4,861 rev

Newest

by launch date

Matvio Black Liquid Rubber Waterproof Coating 1 Quart | Industrial Grade Foundation & Flat Roof Sealant | Waterproofing Membrane for Concrete Wood & Metal | UV Resistant | Leak Repair Paint

matvio$21.6361 rev

8mo ago

Rubber Liquid Waterproof Sealant TUFINEIN 53oz/1.5kg Black Quick Drying Multi Surface Foundation Leak Repair - Roof Gutters Basement Sealer Waterproof - Indoor & Outdoor Flexible Rubber Paint

Tufinein$35.20282 rev

9mo ago

Rubber Liquid Waterproof Sealant TUFINEIN 53oz/1.5kg Neutral Gray Quick Drying Multi Surface Foundation Leak Repair - Roof Gutters Basement Sealer Waterproof - Indoor & Outdoor Flexible Rubber Paint

Tufinein$35.36282 rev

1y ago

Liquid Rubber Basement and Foundation Repair Sealant - Waterproof Concrete Sealer & Crack Filler - Flexible Coating for Indoor & Outdoor Use - Waterproofing Paint - Black 2.5 Gallon

Liquid Rubber$98.223,365 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

What buyers say about foundation sealant

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

What buyers love

Quality-Overall20%

“Wonderful product as advertised”

Efficiency11%

“Does the job”

Ease Of Use11%

“Easy to use”

Advertised Vs Actual Product10%

“As advertised”

Value For Money5%

“Good price”

Leak-Proof5%

“I havent noticed any more leaks”

Water Resistance3%

“Truly does create a waterproof seal”

Moist/Dry2%

“Dries well in 48 hours”

Maintenance And Repair2%

“Works great for small repairs”

Adhesion/Stickiness2%

“Sticks well”

What buyers complain about

Color11%

“Turns yellow after a while :”

Value For Money10%

“Overpriced mess”

Quality-Overall7%

“Junk”

Thickness7%

“The consistency was thick”

Water Resistance4%

“Not waterproof”

Ease Of Use4%

“not very easy to use”

Paint Quality4%

“may need to paint to match”

Durability4%

“Didnt last”

Leak-Proof4%

“it did not stop the leaks”

Functionality-Overall3%

“would not come out of tube”

Top return reasons

Color25%

Advertised Vs Actual Product13%

Functionality-Overall8%

Value For Money8%

Leak-Proof6%

Size-Overall6%

Coverage5%

Material Quality4%

Adhesion/Stickiness4%

Compatibility-Overall3%

Common questions

Is foundation sealant profitable to sell on Amazon United States?: The niche generates $95K/yr across 12 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +72.8%. Flapen's verdict: Skip it (48/100).
How competitive is the foundation sealant niche?: 7 brands and 40 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in foundation sealant?: Top complaints mined from reviews: Color, Value For Money, Quality-Overall. The return rate is 1.0%.
When does demand for foundation sealant peak?: Demand peaks in Apr–Jun–Jul; the busiest month runs 3.3× the quietest.
What does it cost to enter the foundation sealant niche?: Listings span $6.63–$199.11; the average listing price is $64.52 (sweet spot $15–$100). The average incumbent carries 2,179 reviews — the moat a new listing must climb.