LAB REPORT # 990407

By: B. Kibler

Date: May 3, 1999

RE: Ultraply®

Introduction:

A sample of Ultraply® was submitted for evaluation as a substrate for tile using Bonsil’s thin sets. Mosaic and Quarry to Ultraply® shear bond specimens were prepared with Bonsil’s Multipurpose Thin Set. The specimens were air cured 7 days prior to testing. Five sets were tested using both sides of Ultraply® with grain vertical and horizontal.

Conclusion:

Bonsil’s Multipurpose Thin Set bonded to Ultraply® meets or exceeds

ANSI 118.4 shear bond requirements. There was not a significant difference in bond strength using one side of Ultraply® over the other, nor did the grain make a difference.

Test Data:

Shear Bond Strength (PSI) ANSI

A Mosaic to Ultraply®- Yellower/lighter side grain vertical 335 >300

B Mosaic to Ultraply®- Yellower/lighter side grain horizontal 295 >300

C Mosaic to Ultraply®- Brown/darker side grain vertical 320 >300

D Mosaic to Ultraply®- Brown/darker side grain horizontal 355 >300

E Quarry Tile to Ultraply®- Brown/darker side grain vertical 170 >100