How to make waterproof roofing from leaves, bark, or woven - Test
  • 1. Which type of leaf is generally unsuitable for roofing due to rapid decay?
A) Dry, brittle leaves
B) Needle-like leaves
C) Large, waxy leaves
D) Soft, thin leaves
  • 2. What is the primary purpose of overlapping roofing materials?
A) To allow for expansion
B) To prevent water penetration
C) To reduce weight
D) To add visual appeal
  • 3. What is a common method of securing bark roofing sections?
A) Using commercial nails
B) Welding
C) Lashing with natural fibers
D) Gluing with sap
  • 4. What type of grass is best suited for thatched roofs?
A) Long, stiff grasses
B) Spiky grasses
C) Grasses that grow in clumps
D) Short, soft grasses
  • 5. Which of these factors is most crucial for a durable leaf roof?
A) Tight packing and secure fastening
B) The smell of the leaves
C) The color of the leaves
D) The time of year leaves are collected
  • 6. What natural substance can be used to seal gaps in a bark roof?
A) Clay
B) Gravel
C) Sand
D) Dust
  • 7. Why is it important to dry roofing materials before installation?
A) To prevent rotting and mold
B) To make them more flexible
C) To improve their color
D) To increase their weight
  • 8. What is the recommended roof pitch for a leaf or thatch roof?
A) Slightly sloped (20-30 degrees)
B) Shallow (less than 15 degrees)
C) Steep (at least 45 degrees)
D) Flat (0 degrees)
  • 9. What is the primary function of the roof ridge?
A) To seal the top seam of the roof
B) To collect rainwater
C) To provide structural support
D) To improve ventilation
  • 10. Which of the following tools is essential for thatched roof construction?
A) Thatching needle
B) Screwdriver
C) Soldering iron
D) Welding torch
  • 11. Which of these materials offers the best natural water repellency?
A) Clay
B) Leaves
C) Grass
D) Bark
  • 12. What can be added to grass thatch to prevent insect infestation?
A) Wood ash
B) Salt
C) Sand
D) Sugar
  • 13. How often should a leaf roof be inspected and maintained?
A) Only after heavy storms
B) Never
C) Every few years
D) Regularly (e.g., every few months)
  • 14. What is a wattle and daub structure often used for in conjunction with a natural roof?
A) Foundation
B) Drainage system
C) Walls
D) Chimney
  • 15. What is an important consideration when harvesting bark for roofing?
A) Harvest only in the winter
B) Harvest only after the tree is dead
C) Harvest all the bark from a single tree
D) Harvest sustainably to avoid harming trees
  • 16. Which direction should overlaps face to best shed water?
A) Upwards
B) Downwards
C) Sideways
D) Alternating directions
  • 17. What can be used as an alternative to natural fiber for lashing?
A) Elastic bands
B) Metal wire
C) Thin strips of bark
D) Plastic rope
  • 18. What helps prevent wind uplift on a leaf roof?
A) Weight and secure fastening
B) Gaps for airflow
C) Lightweight materials
D) Bright colors
  • 19. Which of the following can extend the lifespan of a natural roof?
A) Planting trees directly on the roof
B) Rough installation
C) Proper drainage
D) Neglecting repairs
  • 20. What is a key factor when choosing leaves for roofing in a snowy climate?
A) Soft texture for insulation
B) Strength to withstand snow load
C) Sweet smell to attract animals
D) Bright color to reflect sunlight
  • 21. What is the best time of year to harvest grasses for thatching?
A) Any time is fine
B) Late summer or early fall
C) Spring
D) Winter
  • 22. What is the danger of loose thatch or leaf on a roof?
A) Increased insulation
B) Reduced weight
C) Fire hazard
D) Improved aesthetics
  • 23. Why is a smoky fire sometimes built under thatch during construction?
A) To discourage insects
B) To keep the workers warm
C) To help the thatch dry
D) To provide light
  • 24. Which tree's bark is best known for its waterproof qualities?
A) Oak
B) Pine
C) Birch
D) Maple
  • 25. What should be considered when harvesting materials from protected lands?
A) That no one is watching
B) Regulations and permits
C) That the best materials are always available
D) That the forest won't mind
  • 26. What technique can improve water runoff with leaf roofing?
A) Spreading the leaves out flat
B) Using only one layer of leaves
C) Punching holes in the leaves
D) Creating a layered, shingled effect
  • 27. What type of knot is most secure for lashing roofing materials?
A) Overhand knot
B) Slip knot
C) Granny knot
D) Square knot
  • 28. What is an advantage of using natural materials for roofing?
A) Sustainability
B) Easiest installation
C) Lowest cost
D) Highest durability
  • 29. What can be used to create a smoke hole in a thatched roof?
A) Random hole
B) Carefully planned opening
C) A window
D) Missing thatch
  • 30. What is the first step in building a waterproof roof?
A) Buying expensive tools
B) Installing flashing
C) Planning and material gathering
D) Starting at the top
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