Product Brochure
WEDI FUNDO SHOWER SYSTEM AND TILE BACKER BOARD UNDERLAYMENTS
CSI DIVISION: 22 00 00 – PLUMBING
Section: 22 40 00 – Plumbing Fixtures (Shower System Kit)
Product certification system The ICC-ES product certification system includes testing samples taken from the market or supplier‘s
stock, or a combination of both, to verify compliance with applicable codes and standards. The system
also involves factory inspections, and assessment and surveillance of the supplier‘s quality system.
Product wedi Fundo Shower System and Tile Backer Board Underlayments
Listee
wedi Corporation 1160 Pierson Drive, Batavia, IL 60510
www.wedicorp.com
Compliance with the following codes 2021, 2018, 2015, 2012 and 2009 International Plumbing Code
®
(IPC)
2021, 2018, 2015, 2012 and 2009 International Residential Code
®
(IRC)
2021, 2018, 2015, 2012 and 2009 International Building Code
®
(IBC)
2021, 2018, 2015, 2012 and 2009 National Standard Plumbing Code
®
(NSPC)
2021, 2018, 2015, 2012 and 2009 Uniform Plumbing Code
®
(UPC)*
2019, 2016 and 2013 California Plumbing Code (CPC)*
2020 and 2017 City of Los Angeles Plumbing Code
2015, 2010 and 2005 National Plumbing Code of Canada**
* Uniform Plumbing Code is a copyrighted publication
if the International Association of Plumbing and Mechanical Officials
** National Plumbing Code of Canada is a copyrighted publication
of National Research Council Canada
Compliance with the following standards ANSI A118.10-2020, Load Bearing, Bonded, Waterproof Membranes for Thin-Set Ceramic Tile and
Dimension Stone Installations
ASME A112.6.3-2019, Floor and Trench Drains
ASTM E 96-2021, Standard Test Methods for Gravimetric Determination of Water Vapor
Transmission of Materials
ASTM E 331-00(R16), ASTM E331-00(2016) Standard Test Method for Water Penetration of Exterior
Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference
ICC-ES EG 159, Evaluation Guideline for Composite Backer Board (Approved Dec 2004)
ICC-ES AC 71, Acceptance Criteria for Foam Plastic Sheathing Panels Used as Water Resistive Barri-
ers (Approved Feb 2003, Ed Revised Nov 2018)
IAPMO PS 46-2012, Field Fabricated Tiling Kits
IAPMO PS 106-2015e1, Tileable Shower Receptors and Shower Kits
Identification Packaging label for each system shall include the manufacturer‘s name or trademark
as well as the ICC-ES PMG certification mark.
Installation The wedi Fundo Shower Systems shall be installed in accordance with the manufacturer‘s
published instructions and the applicable code(s).
The wedi Fundo Shower system components shall be assembled and can be customized in the field.
When provided drains must comply with ASME A112.18.2/CSA B125.2 as applicable. The wedi pre-
sloped, ready-to-tile shower bases may be used in lieu of a CSA B45.5/IAPMO Z124 plastic shower
receptors or any liner based shower installations. The wedi drain units do not require weep holes.
Listed Models and Characteristics The wedi Fundo Shower Systems consist of the following:
a) The wedi waterproof Fundo show bases are waterproof, pre-sloped, ready-to-tile floor units. The
shower bases with linear and point drainage include factory sealed parts integrated into the floor
bases and can be installed with or without curbs in recess, barrier free installations.
b) The wedi waterproof building panels which are engineered as a general purpose backer board
and underlayment for tile as well as an integral part of the Fundo shower system and consist of a
rigid extruded polystyrene foam covered on both sides with a cement-based resin surface and rein-
forcing mesh for durability and bond performance with tile adhesives.
c) the wedi Vapor 85 Building Panel which may be used with or without wedi shower systems. It is a
specialized building panel featuring the original wedi Building Panel but with its vapor exposed side
protected by wedi Subliner Dry. The wedi Vapor 85 was tested to ASTM E96 Procedure E as a com-
plete assembly with the wedi 620 joint sealing membrane and wedi Subliner Dry sealing tape over
seams and fastener points and was found to have a perm rating of 0.03 perms which meets the
permeance rating requirement of 0.5 perm or less and can be used in continuous use steam shower/
room applications without additional vapor retarders in accordance with Tile Council of North Amer-
ica (TCNA) 2014 Handbook for Ceramic Glass and Stone Tile Installation (SR613-14 and SR614-14).
d) The wedi waterproof Fundo Shower system accessories which may include the following water-
proof components: wedi pre-sloped curbs, wedi niches, wedi seats, wedi fasteners, wedi drain cover
plates, wedi sealants, wedi Fundo drains, wedi Subliner sheet waterproofing membrane system and
tapes, with wedi Subliner Dry Bonding Flange drain, wedi Subliner Dry Tub Sealing Tape.
The wedi Fundo family line includes the following: Primo, Riolito, Riolito Modular, Riofino, Discreto,
Ligno and OneStep. The wedi Fundo Shower system components and assembly for shower installa-
tions were proven to be waterproof, water-resistant, and mold resistant when tested in accordance
with A118.10-2014 and ASTM E331. The wedi drains have found to comply with with ASME
A112.18.2/CSA B125.2 and do not require weep holes.
ICC-PMG 1189 Report National Building Code Compliances
2022. Find Current Report on www.icc-es.org or www.wedicorp.com
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