CBD Materials & Techniques 3

Question 1

Which porcelain tile finish provides the best slip resistance for a bathroom floor?

Accepted Answer

Textured matte

Answer

Textured matte finishes have higher COF (coefficient of friction) values, meeting ADA slip-resistance requirements for wet floors.

Question 2

What is the function of a membrane waterproofing system applied beneath tile in a shower?

Accepted Answer

It prevents water from reaching structural components

Answer

Waterproofing membranes form a continuous barrier that keeps moisture from penetrating to wall framing and subfloor.

Question 3

Which material is commonly used for frameless glass shower enclosures due to its safety properties?

Accepted Answer

Tempered glass

Answer

Tempered glass is heat-treated to be four to five times stronger than annealed glass and breaks into small, less dangerous pieces.

Question 4

What minimum thickness of tempered glass is typically specified for a frameless shower door panel?

Accepted Answer

3/8 inch

Answer

Most frameless shower door specifications require a minimum 3/8-inch tempered glass for adequate rigidity and safety.

Question 5

A client wants a heated bathroom floor. Which flooring material conducts radiant heat most efficiently?

Accepted Answer

Ceramic or porcelain tile

Answer

Ceramic and porcelain tile conduct heat efficiently and retain warmth, making them ideal for use with in-floor radiant heating systems.

(CBD) Certified Bathroom Designer Practice Test