How to refinish hardwood floors
  • 1. What is the first step in refinishing hardwood floors?
A) Apply wood filler
B) Apply a new coat of polyurethane
C) Clear the room completely
D) Rent a drum sander
  • 2. What grit sandpaper is typically used for the first sanding pass?
A) 120-grit
B) 80-grit
C) 36-40 grit
D) 220-grit
  • 3. What type of sander is typically used for large, open areas?
A) Detail sander
B) Orbital sander
C) Belt sander
D) Drum sander
  • 4. What is the purpose of using wood filler?
A) Add color to the floor
B) Make the floor shiny
C) Protect the floor from scratches
D) Fill nail holes and gaps
  • 5. After sanding, what should you do before applying stain or finish?
A) Vacuum and tack cloth the floor
B) Apply a primer
C) Wash the floor with soap and water
D) Let the dust settle overnight
  • 6. What is the purpose of using a tack cloth?
A) Apply stain evenly
B) Remove fine dust particles
C) Buff the finish
D) Clean up spills
  • 7. What is a common type of finish used for hardwood floors?
A) Polyurethane
B) Latex paint
C) Wallpaper paste
D) Acrylic sealant
  • 8. How many coats of finish are typically recommended?
A) 10+
B) 1
C) 2-3
D) 5-6
  • 9. What should you do between coats of finish?
A) Wax the floor
B) Apply more finish immediately
C) Let the finish cure for a week
D) Lightly sand and clean
  • 10. What grit sandpaper is used for between coats of finish?
A) 100 grit
B) 220-320 grit
C) 80 grit
D) 40 grit
  • 11. What is 'screening' a floor?
A) Applying a sealant
B) Coloring the floor with stain
C) Lightly sanding between coats of finish
D) Removing the old finish completely
  • 12. How long should you wait before walking on a freshly finished floor?
A) At least 24 hours
B) Immediately
C) 12 hours
D) 1 hour
  • 13. What type of finish offers the most durability?
A) Wax
B) Water-based polyurethane
C) Shellac
D) Oil-based polyurethane
  • 14. What is 'grain raising'?
A) The wood becoming darker
B) The wood fibers swelling when water-based stain/finish is applied
C) The wood shrinking when stain is applied
D) The wood becoming lighter
  • 15. How can you minimize grain raising?
A) Apply the finish thickly
B) Apply a pre-stain conditioner
C) Skip sanding
D) Use oil-based stain only
  • 16. What is the purpose of staining hardwood floors?
A) To add shine to the floor
B) To protect the wood from moisture
C) To change the color of the wood
D) To make the floor smoother
  • 17. What is the correct order of operations when staining a floor?
A) Finish, sand, stain
B) Stain, sand, finish
C) Sand, stain, finish
D) Sand, finish, stain
  • 18. What is the purpose of an edger sander?
A) Sand along edges and corners
B) Sand large, open areas
C) Remove old stain
D) Apply finish
  • 19. What safety equipment is essential when sanding?
A) Dust mask and eye protection
B) Bare feet
C) Earplugs only
D) Gloves only
  • 20. What does 'feathering' mean in the context of sanding?
A) Gradually reducing the pressure on the sander at the end of a pass
B) Sanding against the grain
C) Sanding in circular motions
D) Using a coarse grit sandpaper
  • 21. What is a potential issue with using old or improperly stored finish?
A) It may not cure properly
B) It will be cheaper
C) It will be more durable
D) It will dry faster
  • 22. How should you dispose of oily rags after applying stain or finish?
A) Soak them in water and put them in the trash
B) Lay them flat to dry completely outdoors
C) Bury them in the garden
D) Throw them in the trash immediately
  • 23. What is the main advantage of water-based polyurethane?
A) Easier application
B) Low odor and faster drying time
C) Higher durability
D) Lower cost
  • 24. What is a common mistake made when applying finish?
A) Applying too thin of a coat
B) Sanding too lightly between coats
C) Applying too thick of a coat
D) Waiting too long between coats
  • 25. What type of brush is best for applying polyurethane?
A) Natural bristle or foam brush
B) Wire brush
C) Sponge
D) Paint brush
  • 26. How can you check for flatness after sanding?
A) Use a level
B) Look at the floor from a distance
C) Use a long straightedge
D) Feel the floor with your hands
  • 27. What can cause finish to bubble?
A) Sanding with fine grit sandpaper
B) Applying finish in high humidity
C) Applying thin coats
D) Using a high-quality brush
  • 28. What is the best way to clean hardwood floors after refinishing?
A) Use a pH-neutral cleaner
B) Use abrasive cleaners
C) Use bleach
D) Use vinegar
  • 29. What is the purpose of a moisture meter when refinishing hardwood floors?
A) To measure the gloss of the finish
B) To measure the flatness of the floor
C) To measure the moisture content of the wood
D) To measure the thickness of the wood
  • 30. What is 'back-lapping' when applying finish?
A) Applying the finish in circles
B) Skipping sections of the floor
C) Using a roller instead of a brush
D) Slightly overlapping each brush stroke
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