1. Dry lining

2. Dry lining The Dot and Dab Method
The application of plasterboard has dramatically changed over the last 10 years in the construction industry.
Traditional methods of two-coat work on walls are gradually being overtaken by the system of dabbing plasterboards to walls

3. Dry lining
The problem with the traditional methods of two-coat work has been the setting time for the wet materials that has led to a delay in the completion of the buildings.
So to speed up, construction, manufacturers designed various dry lining systems that can be installed quickly and covered with plasterboard.

4. Dry lining Gyproc dry liner basic system
Most widely used method to dry line masonry walls.
Main application is new-build housing sector.
Suitable for most Gyproc plasterboards and thermal laminates.

5. Dry lining Advantages of dabbing plasterboards to walls
Suitable to be applied to most backgrounds.
Quick to install.
Fire protection.
Speeds up drying time.
Reduces amount of mixing required.
Suitable for both new and refurbishment work.

6. Dry lining
To meet the requirements of the industry, plastering manufactures have produced a number of specialist systems:
Thermal qualities.
Moisture resistant.
Fire.
Insulation.
Sound. .

7. Dry lining
The most important activity when dabbing boards is setting out the vertical centre lines for application of the bonding compound

8. Dry lining Tools and equipment required Measuring tape. Level.
Straight-edge.
Gauge rod.
Plumb line.
Foot lift

9. Question
Dabs of bonding adhesive for fixing plasterboard should be no thicker than:
a 10 mm
b 15 mm
c 20 mm
d 25 mm
Answer

10. Find the high spot of wall.
Transfer high spot to ceiling.

12. Dry lining Fixing the boards in place
Plasterboards are then tamped back to setting out lines at floor and ceiling with a straightedge ensuring a good strong bond between board and background.

13. Add 10 mm on high spot for thickness of dab.
Snap chalk lines.
Transfer lines down to floor.
Set out boards from internal angle
Set out end of boards and centre of boards

15. Dry lining Previously fixed plasterboard
fit next board close tight and level
Apply continuous dabs of bonding compound to the perimeters

16. Dry lining
Use a foot lift to place the board in position. Using a straight edge tamp the board back to the setting out lines at the floor and ceiling.
The total area of contact between bonding adhesive and the plasterboard should not be less than 20% of the plasterboard area.

17. Dry lining
Total area of contact between bonding compound/adhesive and plasterboards should not be less than 20% of plasterboard area.

18. Dry lining Checking for alignment and full bonding
Tap the boards firmly using a straight-edge until it lines in with the ceiling and floor lines.

19. Question Name the tools and equipment for dry lining Answer
Tools and equipment required
Measuring tape.
Level.
Straight-edge.
Gauge rod.
Plumb line.
Foot lift

20. Question
What should be the Total area of contact between bonding compound/adhesive and plasterboards
Answer
should not be less than 20% of plasterboard area.

21. Task 1
1 Name three tools used for fixing plasterboard for direct bond.
2 List two thicknesses and widths of plasterboard used in direct bond.
3 What type of plasterboard is best for direct bond?

22. Answers
1 Name three tools used for fixing plasterboard for direct bond.
Any three of the following hawk, trowel, straight edge, spirit level, foot lifter, chalk line
2 List two thicknesses and widths of plasterboard used in direct bond.
thickness: 9.5 mm and 12.5 mm, width: 900 mm and 1200 mm
3 What type of plasterboard is best for direct bond?
The best type of plasterboard for direct bond is tapered-edged plasterboard.

23. Dry lining Apply dabs for the next board and continue along the wall.
At internal angles cut the board to size and place the cut edge to the angle.
At external angles apply adhesive dabs close to the angle on each side.
At windows apply a continuous line of dabs.

24. Dry lining Points to remember when fixing boards to walls.
Always ensure you have applied sufficient dabs in a regular pattern.
When working round services ensure a continuous fillet of adhesive is applied around the whole area.

25. Dry lining Ensure the background clean dry and dust free.
Always ensure a band of adhesives applied at skirting level to provide good fixing for skirting boards.
Remember the boards used may be tapered edge boards which means they will not be plastered – keep the finished surface free from adhesive.

27. Dry lining Knauf Joint Tape
Perforated white tape for reinforcing joints by hand or machine application

28. Dry lining Knauf corner tape
• Paper tape strengthened with two metallic strips, used on external angles.
• Easy to apply corner protection.

29. Dry lining Knauf Fibre Tape
Multi-purpose self-adhesive tape for reinforcing joints and patch repairs to plasterboard.

30. Dry lining Name two different types of jointing material.
setting material, air-dry material

31. Dry lining Knauf Joint Cement Easy Sand
A lightweight air-drying compound for bedding tapes and finishing joints by hand or machine application

32. Dry lining Knauf Ready Mix Lite Easy Sand
A pre-mixed light joint cement for bedding tapes and finishing joints with superior sanding characteristics for hand or machine application

33. Task 2 4 Name two different types of jointing material.
5 To produce the best results with jointing material what should you avoid within the material?
6 Name two types of reinforcement used on plasterboard joints in direct bond.
7 Name two types of reinforcement used on external angles in direct bond.
8 The background for direct bond should be of what quality and why?
9 Dabs of bonding adhesive for fixing plasterboard should be no thicker than:
a 10 mm
b 15 mm
c 20 mm
d 25 mm

34. Answers
4 Name two different types of jointing material.
setting material, air-dry material
5 To produce the best results with jointing material what should you avoid within the material?
Jointing material should be mixed to a smooth paste with no lumps or set hard pieces of jointing material.
6 Name two types of reinforcement used on plasterboard joints in direct bond.
two types of joint tape: paper tape and self-adhesive glass fibre mesh

35. Answers
7 Name two types of reinforcement used on external angles in direct bond.
reinforced paper corner tape, drywall metal beads
8 The background for direct bond should be of what quality and why?
The background for direct bond should be of good quality and level, because if the adhesive used to fix the boards is too thick it will not hold the boards securely back to the background.

36. Answers
9 Dabs of bonding adhesive for fixing plasterboard should be no thicker than:
a 10 mm
b 15 mm
c 20 mm
d 25 mm

37. Soundproofing Solutions to Meet New Part E Building Regulations Custom Audio Designs now offers Sound Testing!! Call for Details. INTERNAL WALLS / PARTITIONS
UNDER PART E:-
The internal wall requirement for the new Part E Regulations is 40 RwdB.
An internal wall is defined as a wall between a bedroom or room containing a W.C. and other rooms.
There is no Part E requirement for an internal wall that contains a door.
Internal walls are not subject to pre-completion testing.
With internal wall applications there is no Ctr adjusting factor required under Part

38. Dry lining Knauf joint tape
Pre-creased tape used to increase the resistance to cracking of flat joints and internal angles.
Knauf fibre tape
Self-adhesive glass fibre mesh tape used as an alternative to joint tape.
Knauf corner tape
Paper tape strengthened with two metallic strips, used on external angles.
Easy to apply corner protection.

39. Dry lining Taping and Jointing Procedure for taping boards
Mix joint cement to correct consistency

40. Question
What should the total area of contact between the bonding adhesive and the plasterboard be ?
Answer
The total area of contact between bonding adhesive and the plasterboard should not be less than 20% of the plasterboard area

41. Question
Which tool is used to lift the plasterboard into position on the wall
Answer
A foot lifter is used to lift the board into position

42. Dry lining
Apply jointing tape and cover with first coat of joint cement using broad knife or trowel feathering out each application

43. Dry lining
Apply second coat of joint cement , when dry apply final coat and leave to dry

44. Dry lining
Using internal trowel apply second coat to internal angles

45. Dry lining
When the jointing material has set sanding can begin

46. Dry lining
A pole sander being used on joints

47. Dry lining
A example of a pole sander

48. Dry lining
An example of a hand sander

49. Dry lining
An example of a broad knife

50. Task 3 On page 232 answer question 11
In your own word describe how to dry line a wall, and what materials you would use
Read page 185 and in your own word describe the setting out procedure
Name three types of dry lining tape
Answer
Knauf joint tape
Knauf fibre tape
Knauf corner tape

51. Dry lining
A selection of knauf dry lining materials

52. Dry lining Knauf Joint Filler
Fast setting gypsum compound for bedding joints by hand application.

53. Question Name three types of tape used for dry lining Answer
Knauf joint tape
Knauf fibre tape
Knauf corner tape

54. Dry lining Knauf Joint Cement Easy Sand
A multi-purpose gypsum-based adhesive for use with Knauf Metal Furring Channel and for direct bonding of Knauf Plasterboards and Insulating Laminates. Should not be used for moisture resistant boards or vapour check boards.

55. Dry lining Knauf Ready Mix Joint Cement
An air-drying pre-mixed jointing compound for bedding tapes and finishing joints by hand or machine application.

56. Dry lining answers
A board carrier

57. Dry lining answers
A foot lifter

58. Dry lining answers
A hand sander

59. Fixing Plasterboard to Metal Stud Partitions
A common partition wall system now seen on site is the Metal Stud the advantages of this
method are of:
• Lightweight non-load bearing.
• Quick assembly.
• User friendly.
• Can be relocated.

60. Fixing Plasterboard to Metal Stud Partitions
A tradesman classed, as an interior fixer would generally construct the metal this being a dry trade area, more associated with a joiner's role.
The plasterer’s skills come in place with the fixing of the boards and the plastering and/or taping and filling of the boards.

61. Fixing Plasterboard to Metal Stud Partitions
Basic procedure for fixing to metal stud
Cut and measure the boards as you would fixing to timber backgrounds.
Use dry wall screws to fi x the boards using a screw gun is an ideal tool.
Fix screws at 300mm centres.
Use battery operated drills no trailing of leads and easy movement around the partitions.
Ensure services fi xed to sections of studding.
Cut boards accurately around services to avoid cracks appearing.

62. Fixing Plasterboard to Metal Stud Partitions
Fixing Boards to Metal Stud
Quicker to build than timber partitions.
Improved sound insulation.
Will not twist or shrink.
Basic tools required.
Easy to cut.

63. Fixing Plasterboard to Metal Stud Partitions
Checking for plumb

64. Fixing Plasterboard to Metal Stud Partitions
Fixing the drywall screws into the metal stud using a cordless drill
Using a foot lift to hold the board in position

65. Fixing Plasterboard to Metal Stud Partitions
Fixing the plasterboards to a studded wall is very similar to that of fixing to a ceiling.
Start from the internal corner and work your way to the external angles.
If the plasterboards exceed the height of the studding cut the board to length and this will leave only vertical joints to tape.

66. Fixing Plasterboard to Metal Stud Partitions
Using a foot lift help position boards 2400mm in length to fit to the ceiling

67. Fixing Plasterboard to Metal Stud Partitions
Using a pad saw to cut around services

68. Fixing Plasterboard to Metal Stud Partitions
Using the electric box as a guide mark out the position

69. Fixing Plasterboard to Metal Stud Partitions
Cut out the plasterboard using a pad saw