8/12/2019 Plaster Works

1/79

1

Plasterworks

There is always something tocover up.

8/12/2019 Plaster Works

2/79

2

Plaster provides

A smooth surface

Sound insulation

Moisture insulation

8/12/2019 Plaster Works

3/79

3

Mixture 1:1:6

8/12/2019 Plaster Works

4/79

4

Lime

Lime gives the smooth white surfacedesired for walls.

Lime bonds with concrete and bricks

Without lime the plaster would be rough.

8/12/2019 Plaster Works

5/79

5

Lime Preparation

Lime needs to be dissolved in water a dayahead, otherwise it will not mix

smoothly with sand. Build a tub or usea number of barrels to mix lime withwater for the next day.

8/12/2019 Plaster Works

6/79

6

Lime Tub

8/12/2019 Plaster Works

7/79

7

Plastering a Wall

Makes Life smoother

8/12/2019 Plaster Works

8/79

8

You need

2m

7..10cm

A Straight Edge made ofplaned wood or aluminum

8/12/2019 Plaster Works

9/79

9

A Gauging Trowel

8/12/2019 Plaster Works

10/79

10

Finishing Trowel

8/12/2019 Plaster Works

11/79

11

Sponge Rubber Float

8/12/2019 Plaster Works

12/79

12

Make yourself a Float

This wooden plank with the handle is ideallysuited for floating, plastering and leveling

(60X15X2cm plank)

The thickness of the handle should be 4cm

8/12/2019 Plaster Works

13/79

13

External Angle Trowel

8/12/2019 Plaster Works

14/79

14

Internal Angle Trowel

8/12/2019 Plaster Works

15/79

15

Lath Hammer

8/12/2019 Plaster Works

16/79

16

Water and Brush

8/12/2019 Plaster Works

17/79

17

Mortar Mixing Tray

Be a professional. Work withproper tools.

8/12/2019 Plaster Works

18/79

18

Make yourself a tray

80

100

32

140

8/12/2019 Plaster Works

19/79

19

You need two boards

Thickness 20 mm

8/12/2019 Plaster Works

20/79

8/12/2019 Plaster Works

21/79

21

And a Bottom Board

76

36

Thickness 20 mm

8/12/2019 Plaster Works

22/79

22

And prepare your mortar

8/12/2019 Plaster Works

23/79

23

Portable Scaffolding

Be a professional

8/12/2019 Plaster Works

24/79

24

Make yourself a Donkey

130

150

50

12

30

75o

24mm

Planks

8/12/2019 Plaster Works

25/79

25

Draw the Shape on the Floor

130

150

50

12

30

75o

8/12/2019 Plaster Works

26/79

8/12/2019 Plaster Works

27/79

27

Mark the lengths and angles

C h l k d i i

8/12/2019 Plaster Works

28/79

28

Cut the planks and positionthem again

8/12/2019 Plaster Works

29/79

8/12/2019 Plaster Works

30/79

30

Nail all gussets on the frame

M k th F b t

8/12/2019 Plaster Works

31/79

31

Make another Frame butdifferent

130

150

50

18

75o

12

8/12/2019 Plaster Works

32/79

8/12/2019 Plaster Works

33/79

8/12/2019 Plaster Works

34/79

8/12/2019 Plaster Works

35/79

35

Add the other leg

8/12/2019 Plaster Works

36/79

36

Nail the gussets

S it ith th

8/12/2019 Plaster Works

37/79

37

Secure it with another crossbrace

See ho the t o f me e

8/12/2019 Plaster Works

38/79

38

See how the two frames areinterlocked

1

2

8/12/2019 Plaster Works

39/79

39

As next we need the braces

150

90

30

34cm

58cm

80cm

8/12/2019 Plaster Works

40/79

40

Cut the braces 45o

34cm58cm

80cmLength

You need 4 Nos. of each length

8/12/2019 Plaster Works

41/79

41

Nail the Braces into Position

8/12/2019 Plaster Works

42/79

42

50X50

Braces and Legs

The innercrossbraces arenot shown

8/12/2019 Plaster Works

43/79

43

With 2 Donkeys and a Plank

40mm Plank

It will be safe to climb

8/12/2019 Plaster Works

44/79

44

Start

How to get it straight

The Plaster Thickness should

8/12/2019 Plaster Works

45/79

45

The Plaster Thickness shouldAverage 20mm

8/12/2019 Plaster Works

46/79

46

Fix Pegs on to the Wall

Small pieces oftiles, glass etc

8/12/2019 Plaster Works

47/79

47

Level the pegs vertically

8/12/2019 Plaster Works

48/79

48

and with the straight edge

horizontally

8/12/2019 Plaster Works

49/79

49

Throw a 10mm Layer on anarea of 1sqm with a trowel

8/12/2019 Plaster Works

50/79

50

This is to create a bonding layer on thewall

If the ground is concrete increase thelime and cement ratio; It will stickbetter to a smooth surface

Do not work on a larger area than 1sqm. You will not be able to control thesetting time and level the plaster

8/12/2019 Plaster Works

51/79

51

Velocity

The velocity created by throwing makesthe mortar stick to the surface.

Do not smoothen the surface

The next layer will stick better to arough surface

8/12/2019 Plaster Works

52/79

8/12/2019 Plaster Works

53/79

53

Apply another layer withthe float

Plaster by adding layer by layer,building the plaster up to itsrequired thickness and evenness.

8/12/2019 Plaster Works

54/79

54

Apply another layer with

the float

This time, use the float to add onlayers.

Put the mortar on the float and pressit on the wall by moving

horizontally and then slowlyupwards.

8/12/2019 Plaster Works

55/79

8/12/2019 Plaster Works

56/79

56

Wait againuntil the mortar sets in

8/12/2019 Plaster Works

57/79

8/12/2019 Plaster Works

58/79

58

Level the Plaster Surface

Scrape the surface with the straight edge

horizontally and vertically and remove bumps.

Start always from the guide points moving in alldirections to level the plaster.

8/12/2019 Plaster Works

59/79

59

Water the area with a brush

If an area becomes toohard and cannot bescraped with the straight

edge apply some waterwith the brush

The water will soften the

lime and cement andallow bumps be cut off

8/12/2019 Plaster Works

60/79

60

Fill up the lower areas

8/12/2019 Plaster Works

61/79

8/12/2019 Plaster Works

62/79

62

Float the area

Now its time to use the float.

Floating means moving the float over thearea in wide circles to level the surfaceentirely.

Wet first the plaster with the brush.

8/12/2019 Plaster Works

63/79

8/12/2019 Plaster Works

64/79

64

Water the area with a brush

If the mortar becomes hard water theplaster with a brush to soften theplaster

Control the softness of the plaster intime before it hardens entirely.

8/12/2019 Plaster Works

65/79

65

Equalise Joints

Level with adjoining areas.

The joints must be equalised nowotherwise it will be too late.

Scrape off the bumps or add some

mortar. Wet the joints and smoothenthem fully with the float.

8/12/2019 Plaster Works

66/79

66

Rubber Sponge Floating

If the plaster is even the next step is

floating of cement waterApply cement water on the surface andfloat it with the rubber sponge float to

smoothen the surface

8/12/2019 Plaster Works

67/79

67

Apply Lime

Prepare with lime and water a paste

Apply this paste onto the surface with afinishing trowel

8/12/2019 Plaster Works

68/79

68

Outside or Inside?

Outside walls are kept rough.They arenot rubber floated.

8/12/2019 Plaster Works

69/79

69

Floor rendering

8/12/2019 Plaster Works

70/79

8/12/2019 Plaster Works

71/79

71

Cement Pegs on the Ground

at Finish Level

8/12/2019 Plaster Works

72/79

72

Pour the Mixture 1:4

8/12/2019 Plaster Works

73/79

73

Distribute the Mixture evenly

with the Straight Edge

Distribute the Mixture evenly

8/12/2019 Plaster Works

74/79

74

st bute t e tu e e e ywith the Straight Edge

8/12/2019 Plaster Works

75/79

75

Level the Surface

8/12/2019 Plaster Works

76/79

76

Let the Cement Set In

8/12/2019 Plaster Works

77/79

77

Float the Surface

8/12/2019 Plaster Works

78/79

78

Smoothen the surface with

the finishing trowel

8/12/2019 Plaster Works

79/79

Application

This rendering is good for

Carpets

Tiling etc