Installation Guide

Surface Prep / TDS-356
1 Product Name
SpiderWeb™IIUncouplingMat
2 Manufacturer
Custom Building Products
Technical Services
10400 Pioneer Boulevard, Unit 3
Santa Fe Springs, CA 90670
Customer Support: 800-272-8786
Technical Services: 800-282-8786
Fax: [phone]
Email: [e-mail]
custombuildingproducts.com
3 Product Description
A waterproof, vapor-proof uncoupling membrane that can be used for
crack-suppression in most tile, porcelain or natural stone installations,
and can be applied over challenging substrates such as installation
over green (young) concrete and single ply 19.2" (49 cm) oc wood
framedfloors.SpiderWeb™IIisdesigneddifferentlythanbonded
membranes, with a sacrificial layer of fleece reinforced fabric that
shears away, or uncouples, when exposed to excessive substrate
movement, absorbing stress and preserving the surface and integrity
ofthetile.SpiderWebII’sbondinglayershavereinforcedfleecewhich
locks mortar into the mat, ensuring strong, reliable installations.
Key Features
Prevents cracks in tile and grout
Use to replace 1/4" (6 mm) backerboard or a second layer of plywood
in flooring installations - 1 roll replaces 3-4 sheets of 1/4" (6 mm)
backerboard
Can be used with polymer modified thin-set mortar - As recommended
for bonding porcelain and other difficult to bond tiles
No fasteners required
Mat made from 70% recycled pre-consumer waste, by weight
Suitable Tile Types
Ceramic tile, all types including impervious porcelain
Natural stone
Precast terrazzo tile
Suitable Substrates
Concrete, cement mortar, masonry
Young concrete
Cement backerboard
Exterior plywood and OSB (interior, dry areas only)
Exteriordecks–ContactTechnicalServices
Posttensionconcrete–ContactTechnicalServices
Lightweight concrete (min. 2000 psi compressive strength)
Gypsum-based cement topping (min. 2000 psi compressive strength)
Existing ceramic tile and resilient flooring
Floor heating systems
Benefits of Product in the Installation
Elastic, rot proof and resistant to aggressive substances and liquids
such as alkalis, solvents and oils.
Bridges cracks, uncouples floor coverings from their substrates, and is
suitable as an underlayment for all floor tiles and stone.
Protected by a Lifetime Warranty when used with a qualifying mortar.
Contains 70% recycled material by weight.
Can be used as an ANSI A118.10 waterproof membrane.
Allows installation of tile over concrete with high moisture content.
Limitations to the Product
Do not bond directly to hardwood, Luan plywood, particle board,
parquet, cushion or sponge-back vinyl flooring, metal, fiberglass,
plastic.
Do not use as a wear surface.
Whensettingglasstilelargerthan6"×6"(15×15cm),contact
Custom's Technical Services for recommendations.
Whensettingdimensionalstonelargerthan12"×12"(30×30cm),
contact Custom's Technical Services for recommendations regarding
subfloor deflection requirements.
Contact Custom's Technical Services regarding in-floor heating
systems.
Packaging
1 M x 30 M Rolls
1 M x 5 M Rolls (Available in Canada)
4 Technical Data
Applicable Standards
American National Standards Institute (ANSI) ANSI A108.01, A108.17,
A118.10 and A118.12 American National Standards for the Installation
of Ceramic Tile ASTM International (ASTM)
ASTM C627 Standard Test Method for Evaluating Ceramic Floor Tile
Installation Systems Using the Robinson-Type Floor Tester
ASTM D638 Standard Test Method for Tensile Properties of Plastics
ANSI A138.1 Green Tile Standard
SpiderWeb™IIUncouplingMat
Published Date: 2/4/2015