Installation Instructions

26
Table II
Trowel Size – Minimum Guidelines
Direct Glue Down
Trowel Size (in inches*)
Type Carpet Back
Notch
Width
Notch
Depth
Space
Between
Notch
Shape
Polypropylene, woven mesh
Secondary
1/8
1/8
1/8
1/8
1/16
1/8
V
U
Unitary, no secondary fabric 1/8
1/8
1/8
1/8
1/16
1/8
V
U
Woven carpet 1/8
1/8
1/8
1/8
1/16
1/8
V
U
Non-woven Refer to manufacturer recommendations
Hot-melt polymer 1/8 1/8 1/16 V
Woven jute secondary 3/32 3/32 3/32 V
Attached cushion
3/32 3/32 3/32 V
Vinyl-backed broadloom 3/32 3/32 3/32 V
Modular carpet tiles Refer to manufacturer recommendations
Double Glue-Down
Cushion to floor 1/16 1/16 1/16
Carpet to cushion:
-smooth back carpet
-rough back carpet
1/8
1/8
1/8
3/16
1/16
1/8
U
U
Notes: The above guidelines should only be used when specific recommendations are not available from the carpet
manufacturer and/or the adhesive supplier. Rough, porous concrete surfaces and heavily textured carpet backs often require
trowels with deeper notches than listed above.
Actual size trowel notch and reasonable expected spread rate ranges.
1/16 x 1/16 x 1/16 sq = 15 – 20 yds.
2
/gal.
3/32 x 3/32 x 3/32 V = 10 – 15 yds.
2
/gal.
1/8 x 1/8 x 1/16 V = 8 – 10 yds.
2
/gal.
1/8 x 1/8 x 1/8 U = 6 – 10 yds.
2
/gal.
1/8 x 1/8 x 1/16 U = 5 – 8 yds.
2
/gal.
1/8 x 3/16 x 1/8 U = 5 – 8 yds.
2
/gal.