Installation Guide

Step 8. Use the flat side of your trowel to key or force-fill any holes or voids in the subfloor. This will also help in bonding
the thinset to the subfloor.
Step 9. Your trowel may be of three different designs. The first one listed next is the preferred. Using the a. (1/4"X 3/16" V
notched), b. (3/16" X 3/16" square notched), or c. (3/16" x 3/16" U notched) side of your trowel, apply the thinset.
Once the thinset has been troweled up, place the BACKER-Lite into the thinset while it is still workable.
Step 10. Using a tool that will not cut or tear the BACKER-Lite (such as a short piece of
2"X4"wood, a rubber float, the flat edge of a trowel, etc.),rub the product with
pressure to work the product into the surface of the thinset. You'll want to obtain
100% coverage. You'll need to lift up a corner of the BACKER-Lite mat to make
sure that you have it. When you are certain that you have full coverage, place the
mat back down and rub It Into the thinset while the thlnset is still workable.
Step 11. At this point you can waterproof BACKER-Lite mat with ease. First, using a
3/16" X 5/32" V notched trowel, apply unmodified thinset. Once this thinset is on
the surface, be sure to key in thinset to fill any holes or voids using the flat side
of your trowel. Next, apply Durabase sealing tape on top of the seams in the
BACKER-Lite. Trowel up the thinset, then center the sealing tape
over each seam and finally, rub the Durabase sealing tape into the still-workable
thinset.
11
Step 12. Perform a similar process as in Step 11 all around the walls of your installation area.
Begin by taking a pre-measured length of Durabase sealing tape and folding
it in half along its length. One side of this fold will be adhered to the floor and the other side will be adhered up the
wall. To accomplish this, first apply the needed quantity of thinset in a line around the wall on the floor and also on
the wall. Next, rub the Durabase sealing tape into the thinset and smooth with a tool that won't tear the tape. Once
this tape is smoothed into place, all that's needed to complete your waterproofing Is to let it dry.
Step 13. Install ceramic, porcelain and/or natural stone no smaller than 2" x 2" on BACKER-LIte mat using unmodified thinset.
Follow the thinset manufacturer's recommendations for mixing thinset. With the flat edge of your trowel, key in all
holes or voids with the appropriate trowel for the size of the tile being installed. Turn trowel over and use notched side
to trowel up thinset to bed tile.
Step 14. When installing tile, use expansion joints at approximately 20'to24' intervals or above Isolation joints. When installing
over crack isolation joints, you do not have to saw the tiles directly over the joint. You can offset the tile by the
length of the whole tile, so it breaks at the normal grout joint. Leave a ¼"expansion joint around the walls. Do not
hard grout expansion or wall joints; use a flexible product in joints, preferably a Dural Duraflex expansion profiles
to complete the installation and to guarantee "no failures."
Product Data
Product............................ BACKER-Lite
Product Data
HIGHLYRECOMMENDED
Material..........................High Density Polyethylene(HOPE) Product............................ WP SealingTape
Material Thickness....... 1/8"(3.0mm) MaterialThickness....... 4 mil (.15mm)
Widthof Roll.................. 3.3'(1m) Width of Roll.................. 5.875"(150mm)
Length of Roll................. 98'(30m) Length of Roll................. 98' (30m)
Color................................. Blue Color................................. Blue
Application..................... Decoupling/ Sealing
Application..................... Sealing Strip for BACKER-Lite
DURAL USA· 1100 Market Street Suite 803 Chattanooga, TN 37402 1-800-278-1956
10