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 26 - Jul 31

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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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4.6 ★★★★★
Based on 7 reviews
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Product Reviews
S
Verified Purchase
Stephanie P.
Grantham, US
★★★★★ 1
Not worth the money
Color: 1PC, Color: 1PC
DO NOY BUY!! It lasted not even 3 minutes with my 6 year old rottie. She bit right through the nose and pulled out the stuffing. Don't waste your money!! I would give it zero stars if I could!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026
K
Verified Purchase
KATHLEEN PATTERSON
Draper, US
★★★★★ 1
Not good for an aggressive chewer
Color: 1PC
This toy is not indestructible. My little Aussie had one ear off and its neck cut in less then 6 hours and by the next day he had the foot chewed off. It is cute and he loved it, but it is stuffed and not really safe for an aggressive chewer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
N
Verified Purchase
Natasha Bowman
West Palm Beach, US
★★★★★ 3
It is not a good product for a dog. I didn’t even last five minutes.
Color: 1PC, Color: 1PC
I received this package and I just gave it to my dog. Doesn’t last five minutes. It’s already tore up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
A
Verified Purchase
Amber
Lexington, US
★★★★★ 5
Totally worth the good price!
Size: 6 inch (Pack of 1), Style: Rabbit
My little shi-tzu has a favorite toy. It’s a stuffed lamb that she has, over time, completely torn to shreds. I needed something cheap on another order to get same day shipping, and I’m now tickled to pieces that I thought to find her something new to play with! When the box arrived, I called my little Mocha and built-up the opening of the box letting her know she had something in there. We never really get to buy her anything, so this was just too much fun 😂 As soon as I picked it up, I planned to toss it for her cause she loves to fetch things. Yeah, didn’t happen. She was so excited, she had this bunny out of my hands before they made it out of the box! Love that it’s made for dogs, and comes without things you might need to worry about, like eye buttons popping off, etc. The little tail did come off pretty quickly and since it was small, I tossed it. The bunny itself is played with at least once or twice daily, and she hasn’t broken through to the stuffing yet. So, for a cheap dog toy, it’s holding up really well. Happy with this purchase and would order something from them again.
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Reviewed in the United States on February 14, 2018
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 5
Adorable, but probably not for medium+ dogs
Size: 6 inch (Pack of 1), Style: Rabbit
I got this for my 20 and 30 pound dogs to play with, and though I didn't really expect for it to be a durable or long-term toy for them, I think it felt like it was well-made and would probably suit dogs that are up to 15 pounds the best. It felt better than other dog toys in this price point but was filled with holes already after the first time my dog played with it on his own, which I think is probably more of a fabric issue than an actual quality issue, because it was more of a teeth puncture than seams ripping. I hope this helps! I would definitely recommend it to anyone with a small breed dog who doesn't have the same bite strength .
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Reviewed in the United States on September 22, 2023

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