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