Joint Sealant

Product information

wedi Joint Sealant is a flexible sealant and construction adhesive that creates strong and waterproof connections between wedi assembly parts without additional tape reinforcement needed. It is used to join and waterproof between wedi products where they connect, and over the seams of these connections.

Additionally, wedi Joint Sealant is applied over fastener penetrations/points.  wedi Joint Sealant is a single component Silyl Modified Polymer (SMP) for use in wedi product system installations as specified in installation manuals. The product is especially formulated for high green strength (high immediate internal strength), adhesion in wet and alkaline environments, and permanent flexibility. The product forms strong connections between wedi components and provides watertight seals on and in joints and seams, and allows for dissipation of stress caused by shock, vibration, or thermal movement.

Ghost Accordion

Displays nothing

Installation Manual and Requirements/Limitations
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)

Close Accordions

Technical Performance Data

Base Material
Silyl Modified Polymer (SMP)
UV Resistance
Light Grey
Curing Method
Green Strength
1400 PA (Physica Rheometer MC 100)
Specific Gravity
1.5 g/ml
Skin forming time
Approx. 20 minutes
Thorough Hardening
Approx. 3mm/24 hours
Volume Change
Less than 3% (DIN 52451)
Tensile strength
350 psi (DIN 53504 / ISO 37)
Elongation at break
400% (DIN 53504 / ISO 37)
Shore A hardness
50 (DIN 53505)
Shear strength
305 psi (DIN 53283/ASTM D1002) (adh. thickness 2mm, test speed 50mm/minute)
Temperature Resistance
Approx. -40F to 250F (-40C to 121C)
Application temperature
41F to 95F (5C to 35C)

Product Sizes

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

wedi Joint Sealant
Usage Amount
Item Number
1-1.2 oz. per ft2 of wedi building panel on walls covers your needs for shower wall, base and curb installation; additional sealant is needed for seats,benches, niches,etc.
10.5 oz. (310 ml)
1 Cartridge
1-1.2 oz. per ft2 of wedi building panel on walls covers your needs for shower wall, base and curb installation; additional sealant is needed for seats, benches, niches,etc.
20 oz. (591 ml)
1 Sausage
Sausage Gun
1 pc
Sausage Gun Replacement Tip
10 pcs/box

Step 4 Complete!

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

Additional Downloads