SKU: 12420029734

RELIABILT N 48-in x 100-ft (100-sq ft) Synthetic Roof Underlayment, RB04100C

Sale price$30.85 Regular price$34.28
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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

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Description

RELIABILT N 48-in x 100-ft (100-sq ft) Synthetic Roof Underlayment, RB04100CRELIABILT Synthetic Roof Underlayment, 48 in x 100 ft A durable, lightweight synthetic underlayment designed to protect roofs as a secondary water shedding barrier. The RELIABILT N series rolls out flat, resists tearing in high winds, and installs easily with clear fastening guides. Key Features: Durable Synthetic Build: 4 layer technology resists stretching, tearing, and blow off in high winds Easy, Flat Install: Rolls out smoothly with clearly

RELIABILT Synthetic Roof Underlayment, 48-in x 100-ft

A durable, lightweight synthetic underlayment designed to protect roofs as a secondary water-shedding barrier. The RELIABILT N series rolls out flat, resists tearing in high winds, and installs easily with clear fastening guides.


Key Features:

  • Durable Synthetic Build: 4-layer technology resists stretching, tearing, and blow-off in high winds
  • Easy, Flat Install: Rolls out smoothly with clearly marked fastening guides for faster application
  • Weather Protection: Helps reduce leaks from severe weather as a secondary water-shedding layer beneath primary roofing
  • Versatile Compatibility: Suitable for asphalt shingles and wood shakes
  • Long-Lasting Assurance: Backed by a 20-year limited warranty

Specifications Table:

Specification Details
Series Name N
Material Synthetic
Application Method Nail
Coverage Area (Sq. Feet) 100
Length (Feet) 100
Width (Inches) 48
Weight (lbs.) 8.93
CA Residents: Prop 65 Warning(s) No
Warranty 20-year limited
For Use with Asphalt Shingles Yes
For Use with Metal Roofing No
For Use with Wood Shakes Yes
For Use with Flat Roofing No
UNSPSC 30151500

Frequently Asked Questions (FAQ):

Q: What roofing materials is this underlayment compatible with?
A: It is designed for use under asphalt shingles and wood shakes; it is not intended for metal or flat roofing.


Q: How large is each roll and what area does it cover?
A: Each roll measures 48 inches wide by 100 feet long and covers 100 square feet.


Q: How is it installed?
A: Install using nails; follow the printed fastening guides on the sheet for proper placement.


Q: Is this a waterproof membrane?
A: No. It is a water-shedding secondary layer meant to be used beneath the primary roof covering.


Q: What is the warranty?
A: It includes a 20-year limited warranty.


Streamlined Shelter with Modern Resilience

This underlayment quietly elevates the roofscape with a refined, grid-lined surface that feels tailored and precise. I love the four-layer construction—it’s the invisible armor that keeps the architecture confident through seasons. Pair it with dark architectural shingles to heighten contrast and create a crisp, contemporary silhouette. Consider it an essential foundation for luxurious living that values longevity as much as style.


Protect your next roofing project with RELIABILT’s durable N-series underlayment—order a roll today and build in lasting confidence.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 12420029734

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Hatice Karaca
Grantham, US
★★★★★ 5
Dermatologist recommended it!
Size: 1.3 Ounce (Pack of 1)
This is my 11th order of this product. I originally started using it a few years ago when my dermatologist recommended it during a period of hormonal acne. I’ve been using it ever since. I have very sensitive skin that usually reacts to almost everything, either with redness or breakouts, but I can use this cream comfortably without any issues. It is very gentle, deeply hydrating, and has become a permanent part of my skincare routine. It is definitely worth the price. Even a small amount provides excellent hydration and it lasts a long time. I also love that it has a natural ingredients and is fragrance-free.
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Reviewed in the United States on April 14, 2026
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Jill
Lowell, US
★★★★★ 5
Game changer.
Size: 1.3 Ounce (Pack of 1)
I moved out to Arizona back in 2020 and shortly after that, I became a reptile. My skin would become flaky and peel and I tried several different types of facial creams and lotions with no luck. I went to a dermatologist who recommended CeraVe, and it did help my skin to an extent. It took care of the flakiness, but I would still see the dryness, especially when I looked in the mirror up close. I recently was on Google doing a search and came across this brand. I thought I’d give them a try and though I was skeptical, my skin has not looked this good in years. My skin feels smooth, hydrated and NO greasiness. I highly recommend this product.
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Reviewed in the United States on September 1, 2025
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Kelly
Houston, US
★★★★★ 5
Wonderfully effective and slightly bougie
Size: 1.3 Ounce (Pack of 1)
I have dry not so sensitive skin. I love the way this smells and feels on my tired parched face.
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Reviewed in the United States on October 25, 2025
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Amazon Customer
Natrona Heights, US
★★★★★ 5
Cleared up my flaky skin problem, helps keeps my facial skin soft year round
Size: 1.3 Ounce (Pack of 1)
I bought this full-size tube of Avene Hydrance Optimale Rich Hydrating Cream after falling in love with a small sample tube that came in a subscription box. At the time I received the sample, I was battling an unusual case of dry flaky skin that was embarrassing. Within a few days of regular use, my skin looked like new. Soft and clear. The tiny sample lasted a long time, so I didn't hesitate to buy the full-size tube even at this price. I use this every morning and night after cleansing my face. My skin stays soft, even with the dry winter skin and drying indoor heat. My makeup glides on smoothly. This is my go-to moisturizer year round now. Another reviewer mentioned being concerned her product may be counterfeit. I only buy products like this when it says Sold by Amazon and not a third party so I make sure I get authentic, fresh products every time.
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Rochester, NY
Lexington, US
★★★★★ 4
Avene RICH face cream
Size: 1.3 Ounce (Pack of 1)
This is a good product that was recommended by my Dermatologist. As written in a previous review, I prefer the LIGHT product. This is very good but too heavy for my face.
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Reviewed in the United States on January 18, 2026

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