Unit code

• Unit code :- CPCCSP3001A,CPCCSP3004A &CPCCSP3003A

• Job role :- Helper mason• Out come :- After completing this unit,

trainees will be able to apply float and render , restore solid plasterwork and apply trowelled texture coat finishes.

Introduction

Name - Rameshwar Lal Jat

Designation -Trainer

Company-Leighton India Contractor Pvt. Ltd.

•Communication skills to:

•Follow instructions

•Read and interpret:

•Documentation from a variety of sources

•Drawings and specifications

•Recognize procedures

•Report faults

•Enable clear and direct communication,

•Use and interpret non-verbal communication, such as hand signals

•Written skills to record results of checks and tests and relevant work completion procedures

•Identifying and accurately reporting to appropriate personnel any faults in tools, equipment or materials

•Respond to change and contribute to workplace responsibilities, such as current work site environmental and sustainability frameworks and management systems

•Teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities

•Technological skills to:

•Use a range of mobile technology, such as two-way radio and mobile phones

•Voice and hand signals to access and understand site-specific instructions.

Required skills

• Adjusting work activity to maintain quality standards

• Application of product and process knowledge to predict consequences and identify

improvements

• Identifying and applying appropriate safety precautions to safely use equipment, and

shift and handle products and materials

• Identifying and reading manufacturers' product installation procedures and

nominated specifications for mixing adhesives, and fixing and cutting cornices

• Identifying by name and general application paper-faced and handmade cornices

• Identifying faults in materials

• Identifying from workplace information and labels the type and purpose of materials

and potential for health and safety risks for cornices and adhesives

• Requirements to plan own work using a systematic approach to allow for efficient and

safe handling of cornices and safe access to work at heights.

Required knowledge

• Application of product and process knowledge to identify problems and predict

consequences

• Identifying faults in operation of equipment or materials quality

• Identifying from workplace information and labels the type and purpose of materials and

potential for health and safety risks

• Implications on work quality requirements for instruction to be followed

• Manufacturers' product installation procedures and nominated specifications for the work

process

• Names and functions of equipment, components and materials

• Requirements for a systematic approach to planning own work

• Safely use equipment, shift and handle products and materials.

• Plastering tools and equipment types, characteristics, uses and limitations

• Processes for the calculation of material requirements

Required knowledge

PPE Required for masonry work

Helmet Safety jacket Safety Shoes

Safety harness Ear plug Goggles

PPE Required for masonry work

Cotton hand gloves Rubber hand gloves Nose mask

Materials Required for Plastering work

•

Coarse Sand Fine Sand

Cement

Line Dori

Plumbob Brick Hammer

Tools Required for Masonry work

Right angle

Tools Required for Masonry work

Trowel

Sprit level

Measurements Tape

Plastering

• Plastering helps provide better sound and thermal insulation and fire resistance.

• A good plasterer should have a sound knowledge of materials to use and their characteristics.

• A plasterer should identify the correct materials and their suitability for any given situation.

• A good plasterer should be able to put right any problems with their work and that of others.

Backgrounds

• The background is the surface that your first coat of plaster is applied to.

• The background needs to provide a good bond for your plaster.

• Preparation of backgrounds is key to a good standard of finished work.• If a background is not suitable or prepared well, your plaster will not

stick to it properly.

Suction

• A plasterer needs to check the rate of suction of the background before applying plaster.

• Too much suction can cause the material to shrink or crack and loose adhesion.

• It can be difficult to rule in or get flat because of the loss of water in the material.

• The plaster will not reach its full strength and could fall off.

• Too little suction can cause the material to slip down the wall making it hard to rule in.

High Suction Background

• Can include Aerated Block, old brickwork and softer types of brick.

• Can be wetted before plastering to control suction.

• Can be controlled with two coats of PVA , one very wet to seal and a 50 / 50 mix for adhesion.

• Use direct bond, hard wall, render.

Medium Suction Background

• Can include lightweight aggregate concrete blocks and clay brickwork.

• Generally has good suction.• Make sure is dust and

grease free and clear of mortar snots.

• Can use all plaster products.

Extended chicken mesh

• Can be used inside and outside.

• Flexible so can be curved.• Fixed to wall plates to

provide a key and resist movement.

• If fixing rib lath the ribs should be in contact with and at right angles to the support.

• Needs pricking up coat first.• Use Carlite Bonding.

Composite Background

• A background with a range of materials.

• This can have different rates of suction.

• Use different methods to create a key eg pva, gyp bond, spatterdash.

Preparation• 1. Brush down the background to remove all loose

materials and dust etc. to give a good sound background.

• 2. Remove all mortar snots from joints, internal and external angles.

• 3. Make a key, if needed to the background.• 4. Test the background for suction ( splash some

water on the surface and see how quickly it gets sucked into the background).

• 5. Treat if necessary.

Preparation

• 6. Place drop boards at bottom of wall to catch any material that is dropped. This can then be re used.

• 7. Fix EML to any timber wall and sole plates as necessary. This stops the plaster cracking and falling off the wood.

• 8. Fix any angle beads that are required.• 9.Set up the spot board and stand.

Method of work

• BROAD SCREEDS.• Use on small areas.• Does not give the highest

standard of work but better than freehand.

• Apply screed to corner of wall and rule off.

• Keep depth of material to no more than 11mm.

• Place another vertical screed in other corner and rule off.

Broad Screeds

• Don’t place any screed in between the two end ones.

• Form a horizontal screed top and bottom and rule off using the vertical screeds.

• Using the screeds to rule off, fill in between the screeds.

Dot Screed

• Can be used on long or high walls.

• Use if the finished work has to be absolutely plumb.

• Gives the highest standard for tolerance purposes.

Dot Screed

• 1. Place a dot of material near an internal angle, place a lath in the dot.

• Dot should be about 300mm away from adjoining wall.

• 2. Place a second dot at the bottom of the wall, place a lath into the dot.

• Dots should be about 2.5m apart.• 3. Plumb in the two dots using a floating rule. • 4. Either tap in or bring the wood out until the two

dots are in line.

Dot Screed

• 5. Place another two dots at the other end of the wall.

• 6. Place intermediate dots in the middle of the wall.• 7. Line the intermediate dots through horizontally off

the two perimeter dots.• 8. Join the dots together as the Broad screed system.• 9. Fill in between the screeds and rule off.

Finishing

• The finish coat provides the final, smooth coat for decoration.

• Generally not more than 3mm thick but can be up to 5mm.

• Always applied in two coats for the best finish result.• If matching to a lime plastered surface the finish used

will be lime putty / fine sand mix.• Finish coats should not be over trowelled as this can

prevent the paint sticking to it.

Plastering work

Plastering

Plastering work

Plastering work

Nero plastering

Plastering work

Between wall and ceiling

Between door frame and window

Above the door frames

Around the fireplace

Scratch coat begins

Scratch coat finished

A finished ceiling

Finished walls

Method of work

• This is the most commonly used method of work for skimming.

• 1. first coat is the scratch coat.

• 2. each stroke should overlap the previous one.

• 3. fill any hollows, joints etc. with the scratch coat.

Trowel

• 4. Once scratch coat has picked up – apply laying down coat.

• 5. this should be slightly tighter than scratch coat.

• 6. When laying down coat has picked up enough, apply first dry trowel.

• 7. Trowel twice more with just enough water to lubricate the trowel and to work the plaster.

Trowel

• Any hollows, marks etc. should be filled with the first trowel (fat). Any later than this the fat will be too watery and has no strength.

• 8. Clean angles out at final trowel and use brush to clean angles and beads.

• 9. Cross trowel at right angles to trowelling strokes to remove any water or fat marks.

• 10. Clean skirting line of excess plaster material (lips)

TROWEL,FLOAT,TROWEL

• This method is useful on uneven backgrounds.• 1. Apply scratch coat with trowel.• 2. Apply second coat using a float.• Because the float is more rigid than a trowel, it will

straighten out any irregularities in the floating coat.• 3. When the second coat has picked up, apply thin

laying down coat with the trowel.• 4. Trowel the work as before.

Beads

• Float ( angle ) bead.• Used to form external

angles.• Galvanised or stainless

steel.• Fix using dabs of material.• Need to be plumb, level and

straight along their length.• Make sure wings are behind

finished edge.

Stop Bead

• Reinforces and finishes edge of plaster where no other material meets it.

• Can be used to finish plaster if butting up to another material if there is no cover being used eg. No arcitrave.

Features Bead

Used to form shadow gaps along skirting board.

Movement Bead

• Fixed over any movement joints in the background to prevent cracking of the plaster.

• Fix with dabs.

• Can be formed with two back to back stop beads and mastic filler.

Thanks ANY Questions