---
title: "Roof Underlayment — $59K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/roof-underlayment"
last_updated: "2026-08-08T16:46:22.877Z"
locale: en
meta:
description: "Niche score 42/100 · $59K/yr market · 66K searches/yr · $78.30 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $59K/yr market · 66K searches/yr · $78.30 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Roof Underlayment — $59K/yr Amazon US Niche (2026) - Flapen"
---
# **roof underlayment**
**Skip it**
Weak search conversion (1.1%) — this niche doesn't clear our bar today.
Market size 15Growth 52Conversion 14Competition 39Returns 25Price range 48Avg price 83Brand share 66Review moat 96Quality gap 47
**Review moat**
**Incredible****89.5**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$78.30**
avg listing price — sweet spot $15–$100
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Growth**
**Good****+22.5%**
90-day search growth — must beat 0% to launch
**Price range**
**Okay****$8.32–$186.16**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Bad****5.0%**
return rate — above 5% kills the launch gate
**Market size**
**Bad****$59K**
$59K/yr · 66K searches
**Conversion**
**Bad****1.1%**
search→purchase rate — share of searches ending in a sale
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, roof underlayment is a $59K/yr Amazon United States market (66K searches/yr). The top 5 brands hold 66% of demand. Verdict: Skip it — 42/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **roof underlayment market data**
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$78K–$98K**
- units × avg price
- **Conversion rate**
- **1.1%**
- **Avg BSR**
- **#1,254**
- **Page quality**
- **0%**
- **Prime**
- **59%**
- **Sponsored**
- **68%**
- **Out of stock**
- **9.3%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **175 days**
## **Competition & brand share**
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **—flat
**Sellers**
**51**
**Top-5 brand share**
**66%**
Top 20: 100%
**Top-5 click share**
**62%**
Top 20: 98%
**Open market**
**28%**
- Grip-Rite24% - SIPA12% - ADFORS11% - BXI9% - ROBERTS9% - American Saturated Felt7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +22.5% search growth over the last 90 days.
2K1KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/roof-underlayment/trend)
## **Top roof underlayment search terms**
- **roof underlayment**11K/yr+26.4%1.3% conv. - **roofing paper**11K/yr+20.1%0.5% conv. - **roofing felt**11K/yr+27.9%0.9% conv. - **roofing underlayment**9K/yr+9.6%1.5% conv. - **tar paper for roof**8K/yr+37.9%1.1% conv. - **synthetic roofing underlayment**3K/yr+23.2%1.6% conv. - **synthetic roof underlayment**3K/yr+45.9%1.0% conv. - **roof felt**3K/yr+26.8%1.3% conv. - **roofing tar paper**3K/yr+40.8%0.7% conv. - **roof underlayment waterproof**4K/yr-31.6%1.2% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/roof-underlayment/search-terms)
## **Top roof 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.
0%10%$6K20%$12K30%$18K40%$24K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Grip-Rite SL154250LWE 48 in. x 250 ft. (1000 sq. ft.) Synthetic Roofing Underlayment**Grip-Rite**$60.01**4.9★26 rev](https://www.amazon.com/dp/B08HPM6KBW) [2**SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48 x 250 (1)**SIPA**$77.16**4.4★149 rev](https://www.amazon.com/dp/B08P177BQZ) [3**BXI SBS Modified Bitumen Waterproofing Membrane Roll 13 Inch x 8.2 Feet Thick Flexible Torch-on Asphalt Roofing Material Self-Healing Flashing Sealant Outdoor Roof Foundation Ice and Water Shield**BXI**$38.41**3.6★34 rev](https://www.amazon.com/dp/B0DQY31HY2) [4**Saint-Gobain FibaTape ADFORS Roof Repair Fabric - 6 inches x 25 feet - Black**ADFORS**$8.32**4.3★69 rev](https://www.amazon.com/dp/B000KKOR7C) [5**ROBERTS 70-115 Moisture Barricade Underlayment Film for Vinyl Laminate SPC Engineered Wood Floors 6 mil. Thick Polyethylene 120 Sq. Foot Roll Black**ROBERTS**$21.78**4.5★801 rev](https://www.amazon.com/dp/B0026T3Q2W)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Pushglossy 1 Roll EPDM Rubber Roofing Membrane 39 x 10ft Butyl Self-Adhesive Waterproof Underlayment 50 Mil Butyl Rubber Backed Flat Roof Sheet Ice and Water Sheet for RV Shed Garage and Patio**Pushglossy**$73.08**25 rev10mo ago](https://www.amazon.com/dp/B0FPC8VFZS) [**foriy Waterproofing Membrane 39.6in x 196.9in Self-Adhesive Roofing Felt Bitumen Waterproof Repair Tape Roof Underlayment Protector Roll Patch Seal Tape Roof Cladding for Roof Leak (3.3x16.4ft)**foriy**$70.45**4 rev1y ago](https://www.amazon.com/dp/B0FJFMDSK9) [**FT Synthetics Platinum HT-SA Ice & Water Roofing Underlayment 41 mil 36 x 67 High-Temp Self-Adhering Nail Sealable UV Resistant ASTM/CSA Certified Lifetime Warranty**FT Synthetics**$159.00**1 rev1y ago](https://www.amazon.com/dp/B0FHKXD945) [**HURDEX Breathable House Wrap & Roof Underlayment 40 in x 33 ft (108 Sq Ft) - 170 GSM Heavy-Duty Weather Resistant Barrier 3-Layer Waterproof Building Wrap for Sheds Garages Tiny Homes & Cabins**AGROLIFE**$35.04**2 rev1y ago](https://www.amazon.com/dp/B0F8R13M71) [**HSS EPDM Waterproofing Membrane EasyStick - 52 Mil - Reinforced - Waterproof - self-Adhesive - Longlasting Waterproof Sheet - Black - 39 inch x 16 feet**HSS**$129.43**62 rev1y ago](https://www.amazon.com/dp/B0F8P3YQ9Q)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**GAP Roofing Black 216 sq. ft. #30 Roofing Felt**GAP**$64.84**5.0★**▲ 235%**](https://www.amazon.com/dp/B00KX2XBJC) [**GAP Roofing 15 lb. Black Roofing Felt**GAP**$57.58**0.0★**▲ 234%**](https://www.amazon.com/dp/B00KQ0D1AK) [**Empire USA - Camel Billiard Worsted Speed Cloth/Felt - 8ft**Empire USA**$135.80**3.8★**▲ 233%**](https://www.amazon.com/dp/B0DV9QLDPC) [**HURDEX Breathable House Wrap & Roof Underlayment 40 in x 33 ft (108 Sq Ft) - 170 GSM Heavy-Duty Weather Resistant Barrier 3-Layer Waterproof Building Wrap for Sheds Garages Tiny Homes & Cabins**AGROLIFE**$35.04**3.3★**▲ 199%**](https://www.amazon.com/dp/B0F8R13M71) [**Tarco Std30 36X72 #30 Asphalt Felt Felt Asphalt Rolls**Tarco**$66.91**0.0★**▲ 145%**](https://www.amazon.com/dp/B001B17938)
**~~View all trending →~~**
## **What buyers say about roof underlayment**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“High Quality and Easy to Install”*
**Advertised Vs Actual Product**15%
*“Works as directed”*
**Value For Money**11%
*“Worth every penny”*
**Ease Of Use**9%
*“easy to use”*
**Assembly/Installation**6%
*“Great product and easy to use, feels duranle and looks great after install”*
**Efficiency**6%
*“It works”*
**Adhesion/Stickiness**6%
*“It's real sticky”*
**Maintenance And Repair**5%
*“quick and easy repair”*
**Water Resistance**4%
*“This was the perfect product to waterproof the roof of our shed”*
**Functionality-Overall**3%
*“Always works”*
### **What buyers complain about **
**Adhesion/Stickiness**17%
*“Zero Stickiness, Unusable”*
**Thickness**11%
*“It's very thin”*
**Size-Overall**11%
*“Small”*
**Ease Of Use**11%
*“Kinda hard to screw up”*
**Leak-Proof**8%
*“That means you probably know how impossible it is to keep flat roofs from leaking constantly”*
**Water Resistance**6%
*“During heavy rain, water gets inside”*
**Color**6%
*“Wrong color”*
**Strength**6%
*“Zero Stickiness, Unusable”*
### **Top return reasons **
**Adhesion/Stickiness**19%
**Size-Overall**15%
**Advertised Vs Actual Product**12%
**Thin**9%
**Value For Money**9%
**Material Quality**8%
**Compatibility-Overall**5%
**Thickness**4%
**Water Resistance**4%
**Color**4%
## **Common questions**
- **Is roof underlayment profitable to sell on Amazon United States?**
- The niche generates $59K/yr across 22 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +22.5%. Flapen's verdict: Skip it (42/100).
- **How competitive is the roof underlayment niche?**
- 18 brands and 51 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in roof underlayment?**
- Top complaints mined from reviews: Adhesion/Stickiness, Thickness, Size-Overall. The return rate is 5.0% — above our launch gate.
- **When does demand for roof underlayment peak?**
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- **What does it cost to enter the roof underlayment niche?**
- Listings span $8.32–$186.16; the average listing price is $78.30 (sweet spot $15–$100). The average incumbent carries 90 reviews — the moat a new listing must climb.
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