Mixed Deck — All CFI Topics Flashcards

Under the ADA, what is the maximum pile height allowed for accessible carpet in commercial installations?

Answer: 1/2 inch

The ADA requires carpet pile height to be no more than 1/2 inch to ensure wheelchair accessibility.

Which tool is essential for cutting precise curves and corners in flooring materials?

Answer: Jigsaw

A jigsaw is an essential power tool for cutting precise curves, intricate shapes, and irregular corners in various flooring materials like wood, laminate, and some vinyl. Its reciprocating blade allows for detailed and non-linear cuts that other saws cannot achieve. This makes it invaluable for fitting flooring around obstacles such as doorframes, pipes, or curved walls.

What organization in the US provides installation guidelines specifically for hardwood flooring?

Answer: NWFA

The National Wood Flooring Association (NWFA) publishes industry-standard installation and finishing guidelines for hardwood floors.

Which standard governs the testing of resilient floor coverings for resistance to indentation in the US market?

Answer: ASTM F1914

ASTM F1914 is the standard test method used to evaluate residual indentation of resilient floor coverings.

Which tool is used to detect high spots and low spots when assessing subfloor flatness?

Answer: Straightedge or flat bar

A long straightedge or flat bar is used to bridge the surface and identify deviations from flatness by revealing gaps beneath it.

What is 'transfer' in the context of testing pressure-sensitive adhesive for LVT installation?

Answer: Adhesive that strings or peels off the substrate onto the flooring back when pulled

Transfer means the adhesive is properly grabbing when the flooring back shows adhesive contact after the tile is pressed and pulled back.

What safety practice should be followed before using power tools on a job site?

Answer: Inspect tools before use

Before operating any power tool, it is a critical safety practice to inspect it thoroughly for damage, frayed cords, loose parts, or malfunctioning safety guards. This pre-use inspection helps identify potential hazards that could lead to accidents or injuries during operation. Ensuring tools are in good working order is fundamental to maintaining a safe job site.

Which factor should be considered first when selecting a flooring product for a healthcare facility?

Answer: Slip resistance and hygiene

When selecting flooring for a healthcare facility, slip resistance and hygiene are the foremost factors to consider. These environments require flooring that minimizes the risk of falls for patients and staff, and that can be easily cleaned and disinfected to prevent the spread of infections. Materials that are non-porous, seamless, and offer good traction are essential for maintaining a safe and sterile healthcare setting.

What should be used under hardwood and laminate flooring to reduce noise and protect against moisture?

Answer: Underlayment

Underlayment is a thin layer of material installed between the subfloor and the finished flooring, such as hardwood or laminate. It serves multiple critical functions, including providing a moisture barrier to protect the flooring, offering sound insulation to reduce noise transmission, and sometimes providing a slight cushioning effect for comfort and minor subfloor imperfections.

What is the recommended minimum number of calcium chloride test kits per 1,000 square feet of floor area per ASTM F1869?

Answer: 3 test kits for the first 1,000 sq ft, then 1 per additional 1,000 sq ft

ASTM F1869 requires a minimum of 3 test kits for the first 1,000 square feet and at least 1 additional kit for every 1,000 square feet thereafter.

What practice helps a CFI installer resolve a dispute with a customer over warranty coverage?

Answer: Refer to the written contract and manufacturer warranty documentation

Written contracts and manufacturer warranty documents provide objective terms that define coverage limits, making resolution straightforward and professional.

What type of fastener is used to attach wood flooring to a concrete subfloor without adhesive?

Answer: Concrete screw or powder-actuated fastener

Concrete screws (e.g., Tapcon) or powder-actuated fasteners (e.g., Ramset) are used to mechanically attach wood sleepers or nailer strips to concrete for a nail-down installation.

How long should most water-based flooring adhesives cure before allowing heavy rolling traffic on a commercial installation?

Answer: 24–72 hours depending on manufacturer instructions

Most water-based adhesives require 24–72 hours of cure time before heavy rolling loads are introduced to prevent adhesive shear failure.

What is the primary advantage of using luxury vinyl plank (LVP) flooring?

Answer: Provides high water resistance and durability

The primary advantage of Luxury Vinyl Plank (LVP) flooring is its outstanding water resistance and durability, making it suitable for almost any room, including basements and bathrooms. LVP is engineered to withstand spills, scratches, and heavy foot traffic, often featuring a protective wear layer. It also offers the aesthetic appeal of natural wood or stone at a more affordable price point and with easier maintenance.

What document should a CFI installer provide to a customer before beginning a flooring installation?

Answer: A written contract or work order detailing scope, materials, and cost

A written contract protects both the installer and customer by clearly defining the scope of work, materials, timeline, and payment terms before work begins.

What is a 'T-molding' transition strip designed to connect?

Answer: Two floor surfaces at the same height separated by an expansion gap

A T-molding bridges an expansion gap between two same-height floor surfaces, allowing independent movement of each side.

What is the primary purpose of a floor roller during flooring installation?

Answer: Apply uniform adhesive pressure

A floor roller, often a heavy, weighted roller, is used after laying down adhesive-backed flooring materials like vinyl sheet or LVT. Its primary purpose is to apply uniform pressure across the entire surface, ensuring maximum contact between the flooring and the adhesive. This process helps to eliminate air bubbles, promote a strong bond, and achieve a smooth, flat finish.

What effect does high moisture vapor emission have on a glue-down vinyl tile installation over time?

Answer: Adhesive bond failure, causing tiles to curl and delaminate

Moisture vapor traveling through the slab attacks the adhesive bond, causing tiles to lift, curl, and delaminate from the substrate.

What is the maximum recommended moisture content for a wood subfloor before installing hardwood flooring?

Answer: 12%

Most hardwood flooring manufacturers specify that the wood subfloor moisture content should not exceed 12% prior to installation.

What is the recommended action for repairing a chipped ceramic floor tile?

Answer: Replace the damaged tile

For a chipped ceramic floor tile, the most effective and aesthetically pleasing repair is to completely remove and replace the damaged tile. Attempting to paint over or patch a chip often results in a noticeable and less durable repair. Replacing the tile ensures a seamless look and restores the floor's integrity.