wedi Waterproofing sheet membrane & tapes

Product information

The wedi® Subliner Dry System includes Subliner Dry Sheet Membrane, Sealing Tape, Prefabricated Outside and Inside Corner Tapes, and various Sealing Collars that waterproof entire structures, especially in shower and steam room construction. wedi® Subliner Dry is well suited for sealing measures over the pre-existing wall or floor underlayment, including drywall. Use Subliner Dry in combination with ceramic tiles, slabs, and natural cast tiles for indoor wall and floor areas. It has strong performance in steam showers and rooms due to its unique Vapor Resistance rating of 0.09 WVTR/Perms as tested using ASTM E96; method E. Subliner Dry is a strong membrane yet very pliable.

Installation steps, measuring, and cutting grid lines are printed on its surface. The Subliner Dry System includes many accessories, including wedi Sealant 620 to treat all seams in installations to water and vapor-proof. The wedi approach to sealing sheet membrane seams compares traditional techniques, where thinset mortar is applied between sheets at seams. While the sheets may be waterproof in such projects, the thinset taped seams cannot reasonably be expected to waterproof and protect the substrate. The thinset will absorb water and allow its passage too.

We also have special sealing tape options available, such as our Tub Sealing Tape. This wedi® Sealing Tape is equipped with a butyl-based adhesive strip which attaches to a plastic tub unit’s perimeter outside edge before it’s attached up onto blocking installed horizontally between framing studs. Here it creates a waterproofing back-up to a tub’s traditional surround wall backers, which are prone to separate and leak at the transition from tub to wall.

Ghost Accordion

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Installation Manual, Requirements/Limitations and Warranty
Product Approvals & Certification

Approvals and certificates applicable to entire Fundo Shower System incl. wedi Building Panel:

City of New York, MEA 912-52-SM

Fundo Shower Systems & Building Panels: ICC PMG 1189 (for USA & Canada) – Download Here

Meets all applicable ANSI/ISO Standards incl. ANSI 118.10 and IAPMO PS106

TCNA handbook recognized for wall, floor, countertop, & more applications

City of Los Angeles Approval M-100017

BBA (British Board of Agrement)


CE Marked

Diverse State Approvals

SAI Global Watermark Certified (Australia & New Zealand)

Codemark Certified (Australia & New Zealand)

Technical Performance Data

Subliner Dry Sheet Membrane
Polyethylene Core with dual sided Polypropylene fleece surface for perfect thinset mortar anchoring
Fleece Color
Grey/Dark Print
Membrane Width
39 inches (1m)
Membrane Length
16 ft (5m) and 98 ft (30m)
Membrane Thickness
23 mm
.06 lb/ sq. ft. / 298 g/m2
Processing Temperature
41F to 86F/ +5C to +30C
Compliance with ANSI 118.10-1999. Standard for Load Bearing, Bonded, Waterproof Membranes for Thinset Ceramic Tile and Dimensional Stone
Fungus & Micro-organism Resistance
Passed, no growth
Seam Strength ASTM D 751 (Min. Requirement 16 lbs. in 2" width)
Passed, 71 lbs
Breaking Strength ASTM D 751 (Min requirement 170 PSI)
Passed, 1637 PSI (Longit.)/822 PSI Transverse
Dimensional Stability ASTM D 1204 (0.7% max. length change)
Waterproofness ASTM D 4068 (Requirement no moisture penetration)
7 Day Shear Strength ASTM C 482 (min requirement 50 PSI)
Passed, 152 PSI
7 Day Water Immersion Shear Strength ASTM C482 (Min. requirement 50 PSI)
Passed, 127 PSI
4 week Shear Strength ASTM 482 (min requirement 50 PSI)
Passed, 132 PSI
12 week Shear Strength ASTM C482 (min requirement 50 PSI)
Passed, 72 PSI
100 day water immersion Shear Strength ASTM C 482 (min requirement 50 PSI)
Passed, 117 PSI
Water Vapor Permeability acc. to ASTM E96 Method E Desiccant Test at 100F and 90% RH
0.05 Perms
Robinson Floor Test ASTM C627
Rated 'extra heavy'

Product Sizes

For product retail pricing, please see our Illustrated Retail Price List (USA or CA), available in the downloads section below.

wedi® Subliner Dry
Dimensions (W x L)
Item Number
Item Image
Tileable Waterproofing Sheet Membrane - 53 sqft
39 in. x 16 ft. (53 sqft)
1 roll
Tileable Waterproofing Sheet Membrane - 323 sqft
39 in. x 98 ft. (323 sqft)
1 roll
wedi® Subliner Dry Sealing Tape
Dimensions (W x L)
Item Number
Item Image
Tileable Waterproof Sealing Tape - Fleece Laminated
5 in. x 32.8 ft.
1 roll
wedi® Subliner Dry Corner Sealing Tape
Usage Amount
Item Number
Item Image
Inside Corner
4 3/4 in. x 4 3/4 in. x 2 1/4 in.
2 pcs/bag
Apply to any inside corner within 36 in. of the shower
Outside Corner
4 3/4 in. x 4 3/4 in. x 2 1/4 in.
2 pcs/bag
Apply to any outside corner within 36 in. of the shower, including between base & floor
wedi® Subliner Dry Sealing Collars
Item Number
Item Image
Pipe Seal
4 3/4 in. x 4 3/4 in.
1 pc
Flexi collar for sealing around 1/2 in. to 3/4 in. shower pipe extrusions
Mixing Valve Seal
ø 3 15/16 in.
1 pc
Flexi colar for sealing around Mixing Valve
wedi® Subliner Dry Tub Tape
Tub Sealing Tape w/ Waterproof Butyl Connection Strip
Dimensions (W x L)
4 3/4 in. × 11 ft.
1 roll
Item Number

Step 4 Complete!

You’ve chosen everything you need to build a custom shower!

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