Choosing between these two flooring tile stone items is really a question of which layer you need. One is a finished, water-resistant wood-look plank that you can walk on. The other is a 400 sq ft roll of 3mm padding with a vapor barrier that sits underneath a floor. Get the wrong one and you'll either have no visible floor or no cushioning layer beneath it.
Quick verdict
If your project is at the subfloor stage, buy the Floor Underlayment 400 Sq. Ft. If you are ready to put down the finished surface, buy the Brookstone Oak 12 mm x 8 in. Waterproof Laminate Wood Flooring. The underlayment is for the prep layer; the laminate plank is the visible floor itself.
| Product | Listed Price | Coverage | Price Bar | Key Attributes |
|---|---|---|---|---|
| Floor Underlayment 400 Sq. Ft, 3Mm Laminate Flooring Padding with Attached Vapor | USD 191.82 | 400 sq ft | 3mm thickness, recycled fiber + PE film, attached vapor barrier, soundproofing | |
| Brookstone Oak 12 Mm T X 8 In. W Waterproof Laminate Wood Flooring | USD 40.74 | 15.94 sq ft | Waterproof, 12mm thick, AC4 commercial medium traffic, beveled edge, textured finish, attached 2mm pad |
The table shows the fundamental split: the underlayment prioritizes coverage and underfloor performance, while Brookstone Oak prioritizes a finished, water-resistant surface with attached padding. Neither listing is a substitute for the other, so your purchase depends on which project phase you are in.
Where each product wins
Floor Underlayment wins when you need large-area coverage. At 400 sq ft across two 200 sq ft rolls, this 3mm padding with an attached vapor barrier and soundproofing profile is built for prepping a room before vinyl or wood goes down.
Brookstone Oak wins when you need the visible layer. It is a 12mm waterproof laminate with AC4 commercial medium traffic rating, beveled edges, textured finish, and an attached 2mm underlayment. It can be installed on any grade, including basements.
Product notes
Floor Underlayment 400 Sq. Ft, 3Mm Laminate Flooring Padding with Attached Vapor
This underlayment delivers 400 sq ft of coverage in a single purchase, split into two 200 sq ft rolls. The 3mm thickness uses recycled fiber and PE film, with an attached vapor barrier, and it is intended for soundproofing and noise reduction on vinyl and wood floors. At $191.82, it is the higher listed price, but it replaces many smaller rolls for a large space. The attached vapor barrier is especially useful when you want to limit moisture transfer between the subfloor and the floor covering above. The primary limitation is that it is not a finished walking surface, and the 47.84-pound package is a heavy item to move into place.
Brookstone Oak 12 Mm T X 8 In. W Waterproof Laminate Wood Flooring
The Brookstone Oak plank is a finished 12mm waterproof laminate with an AC4 commercial medium traffic rating, beveled edge, textured finish, and a wood-look beige color family. The attached 2mm underlayment is designed to reduce sound and add comfort underfoot while making installation faster than adding a separate pad. At $40.74, it is the lower listed price, but the 15.94 sq ft coverage means a typical room will require multiple units. It can be installed on any grade, including basements, and includes a lifetime residential warranty. The beveled edge and textured surface give it a plank-like look that suits a wood-floor aesthetic.
Final choice by use case
- For large subfloor prep: Floor Underlayment 400 Sq. Ft. The 400 sq ft coverage, 3mm padding, attached vapor barrier, and soundproofing are the practical match for covering a big area before vinyl or wood.
- For a finished waterproof floor with an oak look: Brookstone Oak. The 12mm plank, AC4 commercial medium traffic rating, beveled edges, textured finish, and pre-attached pad make it a ready-to-walk surface.
- For a small space: Brookstone Oak. The listed coverage of 15.94 sq ft starts small, so it can be a manageable way to ease into a project, but larger rooms need more units.
