Stone Veneer

APPLICATION

FLEXSTO installation can be easily done using many of the basic tools used in most tile work. FLEXSTO can be applied over: concrete, ceramic, wood, metal, plywood, fiberglass, backer board, tile, dry wall, painted surfaces, MDF, door skins, cabinetry and many other substrates as well.

FLEXIBILITY

FLEXSTO can be used the same way thin laminate type products are used. It will bend to a minimum radius depending on the stone color or type before cracking. Testing should always be done prior to any installation. It can be arched or bent inward or outward to meet a given look or architecture.

PREPARATION

Prior to application it is best to clean, brush, and degrease any surface of dust or oils. Depending on the adhesive used, it may be necessary to prep the back of the FLEXSTO by sanding or scuffing the back to expose the fiberglass. Some adhesives may require the use of solvents or recommended primer by the adhesive manufacturer.

LAYOUT & PATTERNS

Time spent preparing the work area will pay off in a job well done. Preparation of the area to be covered and the layout of the FLEXSTO veneer sheets is the same as for natural stones or tiles. A preliminary dry fit of FLEXSTO veneers allows for arrangements and orientation of individual sheets, patterns, textures, and colors before final placement. It is recommended that each sheet be dry fit exactly where it will be placed on all surfaces. Numbering the sheets to track relocation before cutting and trimming will save you time.

TILING, GROUTING & JOINING

FLEXSTO can be also be used to create a tiled effect by leaving a grout joint between cut pieces. Sheets may also be butt joined for a minimal seam look. Due to the thin nature of FLEXSTO a narrower grout joint will produce better results. Test show the use of water based epoxy grouts work well to fill between the cut veneers. These epoxy grouts are also available in several colors to match the desired decor. On final clean up with a sponge, the epoxy will also seal and fill the FLEXSTO surface. If desired a deeper grout joint can be achieved by removing material just under the grout joint area.

SEALERS

FLEXSTO can be sealed with the same sealers used for slate, stone tiles, and wood. There are many sealers on the market with various recommended applications. Please test any sealer for the desired luster and penetration required prior to installation. For a list of known sealers please contact our office for the latest updates.

PRE-SEALING

Pre-sealing the FLEXSTO veneer sheets prior to installation will protect the face from adhesives and grout during installation and handling.

SAFETY & PRECAUTIONS

Precautions must be taken when working with FLEXSTO due to the fiberglass composition of the backing materials. ALWAYS use the proper type gloves, goggles, and dust mask when cutting FLEXSTO. When using a saw ALWAYS be sure to take proper precautions to cover skin, eyes and lungs from fiberglass dust. When cutting FLEXSTO properly filter equipment exhausts when cutting with saws, grinders, or sanders. AVOID BREATHING SILICA DUST. This product when cut, drilled, or abraded produces dust containing Free Silica which may cause cancer or delayed lung injury (Silicosis) if inhaled. Work outdoors, in a well ventilated area, or use mechanical ventilation.

ADHESIVES

Know your adhesives; by understanding the specifics of any adhesives, much time and cost can be saved. All adhesives should be tested prior to any installation including consideration of moisture and temperature in the planned environment. If the application is outdoors, consideration to thermal expansion should be taken into account. Since FLEXSTO is only a veneer it must expand and contract the same as the substrate or de-lamination may occur. Where adhesive primers are recommended the bond should be test by the installer before final installation.

RECOMMENDED ADHESIVES

• MYK LATICRETE L-252, L-270 or L-215
• Premixed grout and tile adhesive
• Acrylic copolymer based tile adhesive
• Polyurethane wood glues and PU construction grade adhesives
• Wood, parquet, and outdoor carpet adhesives
• Thick latex or acrylic latex type tile adhesive (use only where air drying can take place)
• Epoxy
• Silicone (with primer only)
• Construction grade multi-purpose adhesive.
• Polyester based gap filler putty.

The back of FLEXSTO veneers may require a filler type adhesive for some applications. The polyurethane wood glues work quite well for most applications to board materials by foaming slightly to fill gaps. These materials are not recommended for high moisture or wet application. For wet environments epoxies would be the best candidate. Contact adhesives are not recommended due to the uneven backing of FLEXSTO.

SUBSTRATE

Since FLEXSTO is a water proof veneer consideration must be given to the substrate it is applied to. In some indoor and most outdoor applications expansion/contraction must be the same to prevent de-lamination. Concrete and masonry substrates must be at least 28 days old. Hydrostatic pressure conditions and vapor transmission cannot exceed 3 lbs. per 1,000 sq. ft. (1,36 kg per 92,9 m2) per 24 hours using a calcium chloride test (reference ASTM)

HAND ROLLERS

A hand roller is recommended to remove air between FLEXSTO sheet and substrate. To properly roll out trapped air start in the middle of a sheet while firmly rolling out towards the edge. Do not press too hard while rolling as this may cause too much adhesive to push out. Proper back-filling and good rolling techniques will result in a solid hard surface. Do not use non-catalyzing (water vapor type) cure adhesives where the substrate is a moisture barrier. Non-catalyzing adhesive will not cure properly if applied between non-porous materials.

TROWELS

For best results a 3/16″ notched trowel is recommended for application of adhesive on substrate. It is always best to back-fill or back-butter voids or depressions in the material before application to a substrate. Use a straight trowel for back-filling of voids on the FLEXSTO sheets. For continuously wet environments epoxies or polyester resin are recommended and must be tested before final use.

NOTICE

Prior to installation, user shall determine the suitability of the product for its intended use and user alone assumes all risks and liability whatsoever in connection therewith. ANY CLAIM SHALL BE DEEMED WAIVED UNLESS MADE IN WRITING TO US WITHIN FIFTEEN (15) DAYS FROM DATE IT WAS, OR REASONABLY SHOULD HAVE BEEN, DISCOVERED. NOTE: FLEXSTO is not recommended for commercial flooring or countertop applications.

NOTE: FLEXSTO is not recommended for commercial flooring or countertop applications.