I5 - Installation of Finished Floors - LT #2 Flashcards
Why does ceramic flooring need an extra stiff sub floor?
Prevent cracking by providing solid support.
How are the joints in the underlay offset from the joints in the subfloor?
Joints overlap subfloor joints length & widthwise 200 mm
What is the preferred fastener for installing panel-type underlay?
1” long staples w/ a 1/4” crown.
Why should the joints of the underlay to the subfloor?
Underlay will move at joints if not bonded to the subfloor. Imperfections will telegraph through the resilient flooring?
How are sleepers fastened together?
Toenailed
What amount of gap is left between the sleepers and the wall?
1/2”
What is the second layout line squared to the first?
3-4-5 in largest form
Where is a wood strip flooring started?
Parallel to the longest wall or direction of travel
How much space is required for expansion when using strip flooring?
min. 1/2” against each wall.
What should be done if installing wood flooring and the building is damp?
Heating & ventilate, dehumidify
What special precautions should be taken with prefinished flooring materials?
Cover installed flooring with heavy cardboard that is held in place
What is the base shoe used for?
Cover up the gap left for expansion and will flex easily to keep the shoe tight to the floor.
How long should wood strip flooring be acclimatized to the job site conditions?
Minimum of 72 hours.
How is the adhesive for wood tiles applied?
Spread with a notched trowel.
How long should wood strip flooring be acclimatized to the job-site conditions?
Min. of 72 hours.
When is it appropriate to sand wood flooring across the grain?
When the floor is installed very unlevel.
Where is the nail placed when toenailing wood strip flooring?
Just above the tongue.
List four factors that will affect the amount of waste in a flooring installation.
Angled walls, floor openings, quality of floors, patterns and skill of installer.
Once the building has reached what humidity level should boxes of flooring be open?
9-13 %
Rolled flooring products are best stored:
Standing up
When selecting the type and installation of underlay:
Best to consult with the supplier and the installer of the floor, as it may effect warranty
Wood flooring and carpet are often installed directly onto:
Plywood or OSB subfloor, no sleeper required unless on concrete slab.
Resilient flooring requires underlay why?
Thin and any defects will telegraph through
Standard underlay for resilient flooring is:
4x8’, 4x4’ sheets of 1/4” thick panel type material.
Nails and screws for installing underlay are usually:
11mm 7/16” or thicker.
Thicker is underlay is often used to support ceramic tile.
Nails & screws used to install underlay should be long enough to penetrate by no more:
Thickness of the subfloor
Nails used to install underlay must be:
Ring nails or screw nails (ardox)
Underlay used under resilient floor is usually:
6mm thick.
Staples are used for:
Thin under layment
All seams, fastener dimples and defects in the top of the surface of the underlay with floor patch compounds must be:
Sanded smooth.
Sleepers are fastened by:
Adhesive or powder actuated fasteners.
When laying out flooring, chalk the line:
1/2 wider than the first strip, allow for expansion
When the direction of installing the wood strip flooring needs to be changed:
Spline is used to connect two flooring strips back to back
The gap between the wall finish and the wood strip flooring is typically covered with:
Baseboard & base shoe.
What is used for ceramic tile setting?
Thin set (Latex modified cement mortar) Applied to the subfloor or slab, the back of the tile is wetted and mortar is also applied.
When installing Laminate over a concrete slab,
special grade moisture barrier foam may be required.
