Choosing a waterproofing membrane for a shower or other wet-area project means balancing listed price, roll format, thickness, material, and condition. In roofing, gutters, and waterproofing shopping, the central choice here is between a named M-D Building Products roll and a PE membrane that puts its coverage figure directly in the title.
Quick verdict
Prova-Mat is the construction-profile choice; the Shower PE roll is the coverage-and-price choice. The PE roll carries the lower listed price, while the two entries also differ in condition, roll format, and material. Weigh those distinctions together: a named barrier profile points toward Prova-Mat, while an explicitly stated coverage format points toward the Shower membrane.
Comparison table
| Product | Listed price | Material / thickness | Stated roll format | Condition |
|---|---|---|---|---|
| M-D Building Products 80211 Prova-Mat | $94.95 | Polypropylene / 16.93 mil | 39 in. W x 197.04 in. L | Open box |
| Shower PE Membrane | $62.73 | PE / 20 mil | 3.3 ft. x 33 ft.; 108 sq. ft. | New |
Where each product wins
M-D Building Products Prova-Mat
Prova-Mat wins when barrier language is decisive. It has a low-perm, vapor-tight barrier profile and is ICC-ES certified for commercial and residential use. That gives shoppers a specific barrier profile to prioritize when comparing the two rolls. The named Prova-Mat format is also the clear choice for someone who wants the product identity called out in the title.
Shower PE Membrane
The Shower membrane wins when construction and handling language carry more weight. Its three-layer build combines a reinforced polyethylene core with dual non-woven fabric layers. The membrane can be cut, scored, and folded around corners without cracking, directly addressing shaping around a wet-area layout. That combination gives the membrane a clear use case for renovation work that prioritizes stated layer construction.
Product notes
M-D Building Products Prova-Mat
The M-D Building Products 80211 Prova-Mat Shower Waterproofing Membrane Roll is the more targeted pick for shoppers who value a named model and the listed pink color. It is for countertops alongside showers, bathrooms, and laundry rooms, and premium polymer-modified thinset plus a 1/4 in. x 3/16 in. V-notch trowel are specified for installation. Those details give the Prova-Mat entry a clear project context beyond the roll itself. The limitation is the open-box condition, a concrete distinction shoppers should weigh. Shoppers who place greater weight on Prova-Mat identity and its stated installation guidance have a concrete reason to choose it.
Shower PE Waterproofing Membrane
The Shower PE Waterproofing Membrane is the direct choice for shoppers who prioritize new condition and broad wet-area use. It is intended for shower walls, tub surrounds, bathroom floors, steam rooms, kitchens, and laundry areas. Its orange color distinguishes it from the pink Prova-Mat format. The limitation is that shoppers specifically seeking the M-D Building Products model, pink format, or Prova-Mat barrier profile will find those details on the other roll instead. For a renovation where the orange format and new condition matter, this is the clearer match.
Final choice by use case
- For coverage and thickness: Choose the Shower PE Waterproofing Membrane. Its stated 108 sq. ft. format and 20 mil thickness are the relevant comparison points when roll capacity and thickness lead the decision.
- For barrier-profile priorities: Choose M-D Building Products Prova-Mat for its low-perm, vapor-tight description and stated certification.
- For installation guidance: Choose Prova-Mat if the named thinset and V-notch trowel direction matters; choose the Shower membrane if the cutting, scoring, and corner-folding language matters more.
- For price: Choose the Shower PE Waterproofing Membrane if the lower listed price is decisive. It is listed at $62.73 versus $94.95 for M-D Building Products 80211 Prova-Mat, a $32.22 gap.
