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How to refinish hardwood floors
Contributed by: Black
  • 1. What is the first step in refinishing hardwood floors?
A) Apply a new coat of polyurethane
B) Clear the room completely
C) Apply wood filler
D) Rent a drum sander
  • 2. What grit sandpaper is typically used for the first sanding pass?
A) 80-grit
B) 120-grit
C) 220-grit
D) 36-40 grit
  • 3. What type of sander is typically used for large, open areas?
A) Detail sander
B) Belt sander
C) Drum sander
D) Orbital sander
  • 4. What is the purpose of using wood filler?
A) Make the floor shiny
B) Add color to the floor
C) Fill nail holes and gaps
D) Protect the floor from scratches
  • 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) 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) Latex paint
B) Polyurethane
C) Acrylic sealant
D) Wallpaper paste
  • 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) 40 grit
B) 80 grit
C) 220-320 grit
D) 100 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) At least 24 hours
B) 1 hour
C) 12 hours
D) Immediately
  • 13. What type of finish offers the most durability?
A) Shellac
B) Water-based polyurethane
C) Wax
D) Oil-based polyurethane
  • 14. What is 'grain raising'?
A) The wood shrinking when stain is applied
B) The wood fibers swelling when water-based stain/finish 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) Apply the finish thickly
D) Use oil-based stain only
  • 16. What is the purpose of staining hardwood floors?
A) To make the floor smoother
B) To add shine to the floor
C) To change the color of the wood
D) To protect the wood from moisture
  • 17. What is the correct order of operations when staining a floor?
A) Sand, stain, finish
B) Stain, sand, finish
C) Sand, finish, stain
D) Finish, sand, 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) Dust mask and eye protection
B) Earplugs only
C) Gloves only
D) Bare feet
  • 20. What does 'feathering' mean in the context of sanding?
A) Sanding in circular motions
B) Sanding against the grain
C) Using a coarse grit sandpaper
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 cheaper
B) It will dry faster
C) It will be more durable
D) It may not cure properly
  • 22. How should you dispose of oily rags after applying stain or finish?
A) Throw them in the trash immediately
B) Lay them flat to dry completely outdoors
C) Soak them in water and put them in the trash
D) Bury them in the garden
  • 23. What is the main advantage of water-based polyurethane?
A) Easier application
B) Lower cost
C) Low odor and faster drying time
D) Higher durability
  • 24. What is a common mistake made when applying finish?
A) Waiting too long between coats
B) Applying too thick of a coat
C) Applying too thin of a coat
D) Sanding too lightly between coats
  • 25. What type of brush is best for applying polyurethane?
A) Paint brush
B) Natural bristle or foam brush
C) Sponge
D) Wire brush
  • 26. How can you check for flatness after sanding?
A) Look at the floor from a distance
B) Use a long straightedge
C) Use a level
D) Feel the floor with your hands
  • 27. What can cause finish to bubble?
A) Using a high-quality brush
B) Applying thin coats
C) Sanding with fine grit sandpaper
D) Applying finish in high humidity
  • 28. What is the best way to clean hardwood floors after refinishing?
A) Use abrasive cleaners
B) Use bleach
C) Use a pH-neutral cleaner
D) Use vinegar
  • 29. What is the purpose of a moisture meter when refinishing hardwood floors?
A) To measure the thickness of the wood
B) To measure the flatness of the floor
C) To measure the moisture content of the wood
D) To measure the gloss of the finish
  • 30. What is 'back-lapping' when applying finish?
A) Applying the finish in circles
B) Slightly overlapping each brush stroke
C) Skipping sections of the floor
D) Using a roller instead of a brush
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