CFI Adhesives, Fasteners & Transition Systems

Question 1

What type of trowel notch is most commonly specified for applying full-spread adhesive for broadloom carpet installation?

Accepted Answer

1/16 inch x 1/16 inch V-notch

Answer

A 1/16 x 1/16 V-notch trowel provides the thin, uniform adhesive film required for glue-down broadloom carpet installations.

Question 2

What is 'open time' in the context of flooring adhesives?

Accepted Answer

The period after application during which the adhesive can accept the flooring material

Answer

Open time is the window between adhesive application and the point at which it can no longer bond effectively to the flooring material.

Question 3

Which type of fastener is used to nail solid hardwood strip flooring to a wood subfloor with a pneumatic nailer?

Accepted Answer

Cleat nail or staple

Answer

Pneumatic flooring nailers drive cleat nails or staples through the tongue of hardwood strip flooring at the correct angle into the subfloor.

Question 4

What is the purpose of a 'reducer' transition strip in flooring installations?

Accepted Answer

To transition between two floor surfaces of different heights

Answer

A reducer transitions between two floor surfaces with different thicknesses, creating a sloped ramp that is both functional and safe.

Question 5

What is the purpose of applying adhesive at a 'wet-set' for large-format tile installation?

Accepted Answer

To ensure full back coverage while the mortar is fresh and pliable

Answer

Wet-setting means embedding the tile immediately into fresh mortar to achieve maximum back coverage, which is critical for large-format tiles.

CFI - Flooring Installation and Maintenance Certification Practice Test