When you're setting tile in a shower, bathroom floor, steam room, or other damp location, the membrane underneath is what keeps moisture from working through. In the roofing, gutters, and waterproofing aisle, this is a decision worth getting right. Both rolls here cover 108 sq ft, but they take different approaches: one is a PE underlayment, and the other is a fabric membrane. The practical decision comes down to the material style you need and the listed price.
Quick verdict
At a glance, the Shower 20 Mil membrane is the lower-priced roll at USD 63.27 and gives you a PE underlayment. The REDGARD Fabric Membrane is listed at USD 87.99 and is described as suitable for all tile. If your priority is a PE underlayment for wet-area tile work, the Shower 20 Mil is the direct match. If you want a fabric membrane, the REDGARD roll is the one to look at.
Comparison table
| Product | Listed price | Price bar | Key attributes |
|---|---|---|---|
| Shower 20 Mil Shower Waterproofing Membrane (3.3 ft x 33 ft, 108 sq ft) | USD 63.27 | Orange PE underlayment with vapor barrier \| new condition | |
| REDGARD Fabric Membrane (108 sq ft) | USD 87.99 | Red fabric membrane \| new condition |
Where each product wins
- Shower 20 Mil Shower Waterproofing Membrane: This is the roll to consider when the job needs a PE underlayment.
- REDGARD Fabric Membrane: This is the roll to consider when you want a fabric membrane. It is described as being in factory-wrapped packaging.
Product notes
Shower 20 Mil Shower Waterproofing Membrane
If the job calls for a vapor barrier beneath tile, this orange PE underlayment is built for that purpose. Its description points to shower walls, bathroom floors, steam rooms, and wet areas. The included component is the shower waterproof membrane itself. The roll has a model name of Waterproofing Membrane, and the product dimensions come in at 3 x 3 x 40 inches at 5 pounds. The trade-off is that its material is a PE underlayment with a vapor barrier rather than a fabric membrane, so if you are looking for a fabric-style roll, this one is not that option.
REDGARD Fabric Membrane
For shoppers who want a fabric membrane under tile, the REDGARD roll is identified as a Fabric Membrane and described as suitable for all tile. It comes in red, is described as brand new in factory-wrapped packaging, and the model and type are both Fabric Membrane. The practical limitation is the flip side of that strength: it is a fabric membrane rather than a PE underlayment, so if your plan depends on a PE layer, the material choice is different. This roll is a straightforward option when the product type you are looking for is a fabric membrane.
Final choice by use case
- For a PE underlayment for tile projects: choose the Shower 20 Mil Shower Waterproofing Membrane.
- For a fabric membrane: choose the REDGARD Fabric Membrane.
