Vinyl & Resilient Flooring Flashcards

What tool is used to measure the moisture vapor emission rate (MVER) of a concrete slab for resilient flooring installation?

Answer: Calcium chloride test kit

The ASTM F1869 calcium chloride test kit measures MVER in pounds of moisture per 1,000 sq ft per 24 hours.

When installing vinyl composition tile (VCT) in a large open area, where should the installer begin laying tiles?

Answer: From the center of the room working outward

Starting from the room's center ensures balanced border tiles on all sides for a professional, symmetrical appearance.

Which of the following is NOT an acceptable subfloor for glue-down LVP installation?

Answer: Existing single-layer vinyl

Glue-down LVP should not be installed over existing resilient flooring because the old surface can flex, fail, or contain asbestos.

What is 'telegraphing' in the context of resilient flooring?

Answer: Subfloor imperfections that show through the finished floor surface

Telegraphing occurs when subfloor irregularities such as fastener heads, joints, or ridges are visible through the resilient flooring.

When heat-welding seams in commercial sheet vinyl, what is the correct sequence?

Answer: Route, weld, trim flush

The seam is first routed to create a uniform groove, then filled with welding rod, then the excess is trimmed flush in two passes.

What does the term 'open time' refer to when working with resilient flooring adhesive?

Answer: The window after troweling during which the adhesive remains workable

Open time is the period after spreading adhesive during which flooring can be placed and achieve a proper bond.

A 100 sq ft room needs VCT. Each tile is 12"×12". With 10% waste factor, how many tiles should be purchased?

Answer: 110 tiles

100 sq ft × 1.10 (10% waste) = 110 tiles, each covering 1 sq ft.