CFI Laminate Flooring Installation 3

Question 1

What is the maximum allowable subfloor flatness variation for laminate flooring per industry standards?

Accepted Answer

3/16 inch over 10 feet

Answer

Industry standards require subfloor flatness to not exceed 3/16 inch over a 10-foot span; high spots or low spots beyond this cause joints to flex and eventually fail.

Question 2

Which laminate flooring defect is most commonly caused by insufficient perimeter expansion gaps?

Accepted Answer

Buckling or peaking upward at the joints

Answer

When expansion is blocked by walls or fixed objects, the planks have nowhere to move and are forced upward at the joints, creating visible buckling known as 'peaking.'

Question 3

What standard waste/overage percentage should be calculated when ordering laminate for a rectangular room with a straight-lay pattern?

Accepted Answer

10%

Answer

CFI standards recommend a 10% overage for standard rectangular rooms with straight-lay patterns to account for cut waste, defects, and future repairs.

Question 4

What is 'peaking' in the context of a laminate flooring installation failure?

Accepted Answer

Upward buckling at plank joints caused by unrelieved expansion pressure

Answer

Peaking occurs when expanding laminate planks cannot move horizontally due to blocked expansion gaps, causing the interlocked joints to be pushed upward.

Question 5

What is the correct method for handling a laminate floor transition in a doorway between two separate floating floor installations?

Accepted Answer

Cut planks at the doorway center and install a T-molding transition strip

Answer

A T-molding placed at the doorway center allows each room's floating floor to expand and contract independently while covering the required expansion gap.

(CFI) Certified Flooring Installer Practice Test

(CFI) Certified Flooring Installer Practice Test

CFI Laminate Flooring Installation 3