SKU: 20465256960

Groundworks Jumbo Underlayment - 1.4 mm Roll - 450 sf

$193.91 $215.46
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Groundworks Jumbo Underlayment - 1.4 mm Roll - 450 sf450 sq ft roll of 1. 4 mm underlayment for use under COREtec, flooring. Underlayments are a great option for reducing sound and adding comfort under luxury vinyl floors. This underlayment offers a combination of benefits: Loose lay and float LVT LVP Excellent sound absorption Made of 100% polyurethane foam Extends COREtec residential wear warranty 5 years Moisture Retarder film Smooths out minor subfloor irregularities up to 1 32" Suitable for use

450 sq ft roll of 1.4 mm underlayment for use under COREtec, flooring.

Underlayments are a great option for reducing sound and adding comfort under luxury vinyl floors. This underlayment offers a combination of benefits:

  • Loose-lay and float LVT/LVP
  • Excellent sound absorption
  • Made of 100% polyurethane foam
  • Extends COREtec residential wear warranty 5 years
  • Moisture Retarder film
  • Smooths out minor subfloor irregularities up to 1/32"
  • Suitable for use with radiant heat flooring
  • 3' x 33.34' / 450 sf per roll
  • 1.4 mm thick

GroundWorks is a Impact Sound Reduction Underlayment that was engineered to reduce sound transmission between floors within multi-level structures. It is ideal for use with luxury vinyl tile and plank.

FEATURES

  • Excellent sound suppression between floors

  • No risk of plasticizer migration with recommended COREtec adhesives

  • Suitable over concrete, wood and hydronic radiant heated floors

  • Recommended for floating or double-glue installation

  • GREENGUARD GOLD Indoor Air Quality Certified®

SUGGESTED APPLICATIONS

  • Hotel Rooms
  • Independent Senior Living Rooms
  • Multi-Family Apartments
  • Military Housing
  • Areas where you are concerned about IIC ratings

SPECIAL NOTE

This product is not approved for wide open areas, or areas where there are heavy rolling loads such as hospital beds.

SPECIFICATIONS

construction: Rolled polyurethane foam
application: LVT/P and floating floors
installation: Single glue (floating) or double glue
warranty: Commercial Limited Warranty

US Units Metric
roll size: 6 feet x 75 feet 1.83 x 22.9 m
thickness: 0.055 inches 1.4 mm
roll weight: 14 / 63 lb. 6.35 / 28.58 kg

Specifications and Installation Instructions for Groundworks Underlayment
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: 20465256960

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4.0 ★★★★★
Based on 21 reviews
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Product Reviews
L
Verified Purchase
Lisa
Draper, US
★★★★★ 5
Comfy
Size: 6-7 Women/4-5 Men, Color: Chocolate
Great slides. I wore them all week on a vacation to the beach. On the beach, walking tours, comfy!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
D
Verified Purchase
Dana Robinson
Fort Morgan, US
★★★★★ 3
Size up
Size: 7.5-8.5 Women/6-7 Men, Color: Black
I had another pair of a different style from the same seller that shrunk when left in the sun. That one wasn't available anymore, so I bought this one in the same size, and they are too small. They are comfy shoes but not true to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
D
Verified Purchase
Dani Mellor
Port Orchard, US
★★★★★ 5
Perfect for after knee surgery
Size: 7.5-8.5 Women/6-7 Men, Color: Blush
I ordered these after having knee surgery and they’ve been a god send. I wear them around the house and they help so much with knee pain. They’re great quality and sized as expected.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
B
Verified Purchase
Bee
Lowell, US
★★★★★ 5
Cute, comfy, practical
Size: 7.5-8 Women/6.5-7 Men, Color: Black
These have become MY FAVORITR SLIPPERS! They are so cute and comfortable! I do like that they have a rubber bottom they're a bit sturdier than other slippers. They last me quite a while to ive only had to replace them once cause I wore them out!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
B
Verified Purchase
Bailey Litchfield
Lexington, US
★★★★★ 5
Super cute and cuper comfortable~
These slippers came very quick with the shipping, and I'm just so happy that they fit amazing. They do have a little lip where the heel is for a little added supports I believe to keep your foot from sliding out as easy. Will they slip out with enough movement? Yeah, but if you're just walking around, it's enough. Typically I tend to go with black colors, but went with the brown this time for a change up. They are so adorable~ They do have memory foam in them, and are very comfortable to wear around the apartment. They do have a hard sole, which is on the thicker side compared to how some slippers have a thin grip on the bottom to be the sole, and is good if you have to wear them outside briefly. The size fits wonderful, not to loose or tight, granted with time and use, they might get a bit loose, but right out of the packaging, and only wearing for a small time around the apartment, they are a glass slipper fit. I stayed to what I normally wear for shoe size, and the size is just right.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 20, 2022

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