pond underlayment
Worth a lookShows demand growing +124.5% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+124.5%90-day search growth — must beat 0% to launch
Avg price
Great$63.40avg listing price — sweet spot $15–$100
Review moat
Great339.27avg incumbent reviews — the moat a new listing must climb
Competition
Great38%top-5 click share — an open shelf
Returns
Good2.0%return rate — above 5% kills the launch gate
Conversion
Good5.5%search→purchase rate — share of searches ending in a sale
Brand share
Good75%top-5 brand share — brands hold most of the demand
Price range
Good$19.09–$177.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Market size
Okay$103K$103K/yr · 30K searches
According to Flapen's Amazon United States niche tracking, pond underlayment is a $103K/yr Amazon United States market (30K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Apr–May–Jun–Jul–Aug. Verdict: Worth a look — 63/100.
Data updated Jul 16, 2026 · scored weekly · How we score niches
pond underlayment market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $95K–$127K
- units × avg price
- Conversion rate
- 5.5%
- Avg BSR
- #56
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 91%
- Out of stock
- 3.8%
- Avg brand age
- 52 months
- Avg seller age
- 199 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
11 rising
Sellers
13
Top-5 brand share
75%
Top 20: 100%
Top-5 click share
38%
Top 20: 87%
Open market
18%
- Fanfanwin29%
- Convivium15%
- REKVEN13%
- UNDERGUARD10%
- Chonway8%
- JOSNAAN7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +124.5% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul, Aug · busiest ÷ quietest = 7.4×
Top pond underlayment search terms
- pond underlayment14K/yr
- pond liner underlayment7K/yr
- pond underlayment fabric5K/yr
- underlayment for pond liner3K/yr
Top pond underlayment 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Convivium 7.5 oz Pond Liner Underlayment Padding Nonwoven Needle-Punched Polyester Geotextile Fabric w/10 U-Pins Staples for HDPE/EPDM/PVC/RPE Liners Fish & Koi Ponds (7ft. x 10ft.)
Convivium$29.934.7★14 rev
JOSNAAN Pond Liner Underlayment Outdoor Ponds Underlayment Non-Woven Geotextile with 15 U-Pins for Landscaping Streams Fountains and Garden Waterfall (7x10ft)
JOSNAAN$26.303.8★4 rev
Fanfanwin 10 x 15 ft Pond Liner Underlayment 6oz Heavy Duty Black Non Woven Geotextile Underlayment Fabric with 10 U-pins for Outdoor Pond Streams Fountains Garden Waterfalls Fishpond Weed Barrier
Fanfanwin$49.734.6★51 rev
REKVEN Pond Liner Underlayment - 15 x 20 Feet - Non Woven Geotextile Landscaping Fabric with 20 U-Pin Garden Staples - Perfect for Fish Koi and Preformed Ponds Fountains Waterfalls
REKVEN$87.684.4★28 rev
Chonway 10 X 15ft Heavy Duty Pond Liner Underlayment 200g Non Woven Geotextile Fabric Pond Liners for Outdoor Ponds for Koi/Duck/Fish Pond Underlayment Fabric for Garden Waterfall French Drain
Chonway$47.635.0★9 rev
Newest
by launch date
Hogarjal Pond Liner Underlayment Fabric - 7.5oz Heavy Duty Non-Woven Geotextile Protects Pond Liners from Punctures by Rocks & Roots Essential Pre-Liner Fabric for Ponds (10 * 10FT-7.5oz Non Woven)
Hogarjal$39.659 rev
Fanfanwin 10 x 15 ft Pond Liner Underlayment 6oz Heavy Duty Brown Non Woven Geotextile Underlayment Fabric with 10 U-pins for Outdoor Pond Streams Fountains Garden Waterfalls Fishpond Weed Barrier
Fanfanwin$49.0851 rev
Fanfanwin 10 x 10 ft Pond Liner Underlayment 6oz Heavy Duty Brown Non Woven Geotextile Underlayment Fabric with 10 U-pins for Outdoor Pond Streams Fountains Garden Waterfalls Fishpond Weed Barrier
Fanfanwin$39.4751 rev
Convivium 7.5 oz Pond Liner Underlayment Padding Nonwoven Needle-Punched Polyester Geotextile Fabric w/10 U-Pins Staples for HDPE/EPDM/PVC/RPE Liners Fish & Koi Ponds (7ft. x 10ft.)
Convivium$29.9314 rev
Convivium 7.5 oz Pond Liner Underlayment Padding Nonwoven Needle-Punched Polyester Geotextile Fabric w/10 U-Pins Staples for HDPE/EPDM/PVC/RPE Liners Fish & Koi Ponds (5ft. x 7ft.)
Convivium$19.0914 rev
Trending
90-day click momentumFanfanwin 10 x 10 ft Pond Liner Underlayment 6oz Heavy Duty Brown Non Woven Geotextile Underlayment Fabric with 10 U-pins for Outdoor Pond Streams Fountains Garden Waterfalls Fishpond Weed Barrier
Fanfanwin$39.474.6★
Fanfanwin 10 x 15 ft Pond Liner Underlayment 6oz Heavy Duty Brown Non Woven Geotextile Underlayment Fabric with 10 U-pins for Outdoor Pond Streams Fountains Garden Waterfalls Fishpond Weed Barrier
Fanfanwin$49.084.6★
Convivium 7.5 oz Pond Liner Underlayment Padding Nonwoven Needle-Punched Polyester Geotextile Fabric w/10 U-Pins Staples for HDPE/EPDM/PVC/RPE Liners Fish & Koi Ponds (7ft. x 10ft.)
Convivium$29.934.7★
Hogarjal Pond Liner Underlayment Fabric - 7.5oz Heavy Duty Non-Woven Geotextile Protects Pond Liners from Punctures by Rocks & Roots Essential Pre-Liner Fabric for Ponds (10 * 10FT-7.5oz Non Woven)
Hogarjal$39.654.4★
Convivium 7.5 oz Pond Liner Underlayment Padding Nonwoven Needle-Punched Polyester Geotextile Fabric w/10 U-Pins Staples for HDPE/EPDM/PVC/RPE Liners Fish & Koi Ponds (5ft. x 7ft.)
Convivium$19.094.7★
What buyers say about pond underlayment
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent quality”
“Very thick”
“durable material”
“Durable,”
“Product is exactly as advertised”
“Easy to work with”
“Worth the investment”
“The size was accurate”
“It is easily moldable to make for a good fit to your base material”
“allows water to pass through”
What buyers complain about
“It isn't flexible at all”
“this one is looks very cheap”
“it is not for holding water”
“some have been thinner that others”
“Leaked”
“Hard to form”
“This one lasted one whole week”
“The only downside is that its a little awkward to handle alone”
“Its awkward bulk may require more than a single person to properly adjust it, however, depending on its intended use”
“it's this hard thick material that doesn't give at all”
Top return reasons
Common questions
- Is pond underlayment profitable to sell on Amazon United States?
- The niche generates $103K/yr across 33 tracked products. 2 of 13 products launched in the last 360 days are still selling. 90-day search growth is +124.5%. Flapen's verdict: Worth a look (63/100).
- How competitive is the pond underlayment niche?
- 11 brands and 13 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 75% of demand.
- What do buyers complain about in pond underlayment?
- Top complaints mined from reviews: Flexibility, Quality-Overall, Water Resistance. The return rate is 2.0%.
- When does demand for pond underlayment peak?
- Demand peaks in Apr–May–Jun–Jul–Aug; the busiest month runs 7.4× the quietest.
- What does it cost to enter the pond underlayment niche?
- Listings span $19.09–$177.17; the average listing price is $63.40 (sweet spot $15–$100). The average incumbent carries 339 reviews — the moat a new listing must climb.