wedi® Shower Extensions

To make complicated designs for shower floor extensions as quick, easy, and safe as possible, wedi offers prefabricated and pre-sloped panels that connect to wedi Fundo® bases. The sloped extension panels come as a straight one-way sloped base element, which can be added to curbed, curbless, or linear shower base sides or miter-cut and notch-connected to make corner extensions that would extend the shower floor beyond one side. The extension panels fit to linear 4-sided slope models as well but the connection height to the groove/channel connection must be compensated for.
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Fundo Floor Extensions Video
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 Data

Tensile Strength
65 psi
Shear Strength
Under conditions required in ANSI A118.10-1999
4 week Shear Strength Dry: 216 psi 12 week Shear Strength Dry: 217 psi 100 day Shear Strength Wet: 201 psi
ASTM D4068 / ANSI A118.10-1999
Fungus/Bacteria Resistance
Passed, No Growth
Linear Variation
AC 159/ASTM 1037-39
Passed, less than 0.07%
Seam Strength
ASTM D751-11 (requirement 8 lb/in width)
Passed, 36.4 lbs

Product Sizes

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

wedi® Shower Extensions
Dimensions (W x L x H)
Item Number
wedi® Shower Extension 24" x 48"
24" x 48" - sloped 1/4 in./ft. (sloped 2.10%)
1 piece
wedi® Shower Extension 12" x 72"
12" x 72" - sloped 1/4 in./ft. (sloped 2.16%)
1 piece
wedi® Curbless Shower Extension 12" x 60"
12" x 60" - sloped 1/4 in./ft. (sloped 2.10%)
1 piece
wedi® Shower Corner Extension
16 1/2" x 16 1/2" x 1 13/16" - sloped min. 1/4 in./ft. (sloped 2.10%)
1 piece
wedi® Curbless Shower Corner Extension
16 1/2" x 16 1/2" x 1 1/16" - sloped min. 1/4 in./ft. (sloped 2.10%)
1 piece

Additional Downloads