SlideShare a Scribd company logo
1 of 30
Download to read offline
1
Plastering is the process covering rough
surfaces and uneven surfaces with a
plastic material, called plaster or mortar to
obtain an even, smooth, regular, clean,
durable surface.
Thursday, November 26, 2020
2
Thursday, November 26, 2020
3
• Ordinary Portland Cement (OPC)
• Lime of Clay
• Aggregates
• Water
• Admixture
Thursday, November 26, 2020
4
• It should be hard and durable
• It should be possible to supply it during all
weather conditions.
• It should adhere to the background and
should remain adhered during all climatic
changes.
• It should be cheap and economical.
• It should offer good insulation against sound
and high resistance against fire.
• It should effectively check the penetration of
moisture from the surface.
Thursday, November 26, 2020
5
Thursday, November 26, 2020
6
Trowel Float
7
Electric Mixture Hawk
8
Angle Bending Scraper
Thursday, November 26, 2020
9
Plastering
MATERIALS
LIME
WATERCEMENT
SAND
Lime Plaster
Cement Plaster
Mud Plaster
Stucco Plaster
Plaster on lathe
Thursday, November 26, 2020
10
 When lime is used as the binding
materials, it is called lime plaster.
 Lime plaster is type of plaster
composed of hydrated lime, sand
and water.
 Lime plaster is similar to Lime
mortar, the main difference is the
based on use rather that
composition.
 Mortar for lime plaster is usually
prepared by mixing sand and lime
in equal proportions. Cement is s
to the small quantity added to the
mixture to improve its strength.
Thursday, November 26, 2020
11
 When cement is used as the binding
materials, it is called cement plaster.
It is especially suited for damp
condition.
 Cement plaster is usually applied in
one coat.
 The thickness of coat can be 12mm,
15mm or 20mm depending upon the
site conditions and type of building.
When the thickness of plaster is
more that 15mm. 6mm thickness of
cement plaster and cement mortar
1;3 or 1;4 is recommended for
cement plastering or RCC surfaces.
Thursday, November 26, 2020
12
 The surface to be
plastered is prepared
exactly in the same
manner as that for lime
or cement plaster.
 Mud plaster is generally
applied in two coats, the
first coat being 18mm
thick while the thickness
of the second coat is kept
6mm.
Thursday, November 26, 2020
13
Thursday, November 26, 2020
14
 Stucco is the name given to a
decorative type of plaster
which gives an excellent
finish.
 Stucco plaster can be used for
interior as well as exterior
surfaces.
 It is usually laid in three coats
making the total thickness of
the plaster to about 25mm, the
first coat is called the scratch
coat; the second a finer coat,,
also known as the brown coat,
the third is called white coat or
finishing coat.
Lathing may be either
of wood or that of
expanded metal.
Wooden lathe consist
of thin strips of well
seasoned wood, about
25mm .in width and 90
to 120cm.
Thursday, November 26, 2020
15
Thursday, November 26, 2020
16
Thursday, November 26, 2020
17
Thursday, November 26, 2020
18
Thursday, November 26, 2020
19
Thursday, November 26, 2020
20
Cracking
Efflorescence
Falling out of plaster
Blowing of plaster
Thursday, November 26, 2020
21
Thursday, November 26, 2020
22
It is solvable salt
are present in
bricks or the
mortar they
absorb moisture.
Thursday, November 26, 2020
23
Thursday, November 26, 2020
24
Cracking – Continuous damping of
plaster, in order to slow down any rapid
drying, to prevent cracking from
happening.
Thursday, November 26, 2020
25
Blistering – Usually caused by uneven mixing
of plaster, which could be prevented by
ensuring a sufficient mixing between cement
and its components to form plaster.
Thursday, November 26, 2020
26
Falling out of plaster
a. The adhesion of the plaster to the
back ground may not be perfect.
b. The suction of the backing
materials may not be uniform.
c. Excessive thermal changes in
plaster.
Thursday, November 26, 2020
27
Blowing of plaster
a. This consist of information of small
patches of plaster swelling but
beyond the plastered surface and
chiefly due to improper slaking or
lime particles in the plaster.
Thursday, November 26, 2020
28
Thursday, November 26, 2020
29
Preparing of
tools
Preparation of
plaster
Applying
Plaster
Finish
(Treatment)
Thursday, November 26, 2020
30

More Related Content

What's hot

What's hot (20)

Foundation
FoundationFoundation
Foundation
 
Plaster
PlasterPlaster
Plaster
 
Brick masonary
Brick masonaryBrick masonary
Brick masonary
 
3.bearing capacity of soil
3.bearing capacity of soil3.bearing capacity of soil
3.bearing capacity of soil
 
Plastering and pointing
Plastering and pointingPlastering and pointing
Plastering and pointing
 
Lintels
LintelsLintels
Lintels
 
Buiding construction (part ii)
Buiding construction (part ii)Buiding construction (part ii)
Buiding construction (part ii)
 
Damp Proof Course
Damp Proof Course Damp Proof Course
Damp Proof Course
 
Types of pitched roofs
Types of pitched roofsTypes of pitched roofs
Types of pitched roofs
 
BRICK MASONRY PPT BY SUBHENDU SAMUI
BRICK MASONRY PPT BY SUBHENDU SAMUIBRICK MASONRY PPT BY SUBHENDU SAMUI
BRICK MASONRY PPT BY SUBHENDU SAMUI
 
Flooring and types of flooring
Flooring and types of flooringFlooring and types of flooring
Flooring and types of flooring
 
Plastering, Pointing & Painting
Plastering, Pointing & PaintingPlastering, Pointing & Painting
Plastering, Pointing & Painting
 
Brick Masonry and Stone Masonry
Brick Masonry and Stone MasonryBrick Masonry and Stone Masonry
Brick Masonry and Stone Masonry
 
Scaffoldings
ScaffoldingsScaffoldings
Scaffoldings
 
Plastering ppt
Plastering pptPlastering ppt
Plastering ppt
 
Foundations
FoundationsFoundations
Foundations
 
Arches
ArchesArches
Arches
 
Chapter 10 wall finishes ( plastering,pointing & painting)
Chapter 10 wall finishes ( plastering,pointing & painting)Chapter 10 wall finishes ( plastering,pointing & painting)
Chapter 10 wall finishes ( plastering,pointing & painting)
 
Scaffolding and formwork ppt
Scaffolding and  formwork pptScaffolding and  formwork ppt
Scaffolding and formwork ppt
 
PRESENTATION ON CONCRETE
PRESENTATION ON CONCRETEPRESENTATION ON CONCRETE
PRESENTATION ON CONCRETE
 

Similar to Plastering

Presentation on Brick Masonry, Paint and Plastering
Presentation on Brick Masonry, Paint and PlasteringPresentation on Brick Masonry, Paint and Plastering
Presentation on Brick Masonry, Paint and PlasteringAbontee
 
Sawdust as Insulating material
Sawdust as Insulating materialSawdust as Insulating material
Sawdust as Insulating materialAr. Aakansha
 
Universal Distributors Ltd: Property Investor Presentations for Daich Coatings
Universal Distributors Ltd:  Property Investor Presentations for Daich CoatingsUniversal Distributors Ltd:  Property Investor Presentations for Daich Coatings
Universal Distributors Ltd: Property Investor Presentations for Daich CoatingsMarcus Anselm
 
MD MAHFUJUR RAHMAN RAJ.pptx
MD MAHFUJUR RAHMAN RAJ.pptxMD MAHFUJUR RAHMAN RAJ.pptx
MD MAHFUJUR RAHMAN RAJ.pptxrajviewport
 
Bricks notes Bricks are rectangular in shape and can be easily handled with o...
Bricks notes Bricks are rectangular in shape and can be easily handled with o...Bricks notes Bricks are rectangular in shape and can be easily handled with o...
Bricks notes Bricks are rectangular in shape and can be easily handled with o...kumar42249
 
Trabajo de tecnologia construction materials
Trabajo de tecnologia   construction materialsTrabajo de tecnologia   construction materials
Trabajo de tecnologia construction materialscnuevog
 
Low cost building materials and construction techniques
Low cost building materials and construction techniquesLow cost building materials and construction techniques
Low cost building materials and construction techniquesYash Kotgirwar
 
Bricks
BricksBricks
Brickshlksd
 

Similar to Plastering (20)

Presentation on Brick Masonry, Paint and Plastering
Presentation on Brick Masonry, Paint and PlasteringPresentation on Brick Masonry, Paint and Plastering
Presentation on Brick Masonry, Paint and Plastering
 
Plastering
PlasteringPlastering
Plastering
 
Plastering
PlasteringPlastering
Plastering
 
Building materials
Building materialsBuilding materials
Building materials
 
Bricks
Bricks Bricks
Bricks
 
Sawdust as Insulating material
Sawdust as Insulating materialSawdust as Insulating material
Sawdust as Insulating material
 
Universal Distributors Ltd: Property Investor Presentations for Daich Coatings
Universal Distributors Ltd:  Property Investor Presentations for Daich CoatingsUniversal Distributors Ltd:  Property Investor Presentations for Daich Coatings
Universal Distributors Ltd: Property Investor Presentations for Daich Coatings
 
Surface finishes(1)
Surface finishes(1)Surface finishes(1)
Surface finishes(1)
 
Plastering
PlasteringPlastering
Plastering
 
MD MAHFUJUR RAHMAN RAJ.pptx
MD MAHFUJUR RAHMAN RAJ.pptxMD MAHFUJUR RAHMAN RAJ.pptx
MD MAHFUJUR RAHMAN RAJ.pptx
 
Brick
BrickBrick
Brick
 
Cement & mixes
Cement & mixesCement & mixes
Cement & mixes
 
Bricks notes Bricks are rectangular in shape and can be easily handled with o...
Bricks notes Bricks are rectangular in shape and can be easily handled with o...Bricks notes Bricks are rectangular in shape and can be easily handled with o...
Bricks notes Bricks are rectangular in shape and can be easily handled with o...
 
Trabajo de tecnologia construction materials
Trabajo de tecnologia   construction materialsTrabajo de tecnologia   construction materials
Trabajo de tecnologia construction materials
 
Low cost building materials and construction techniques
Low cost building materials and construction techniquesLow cost building materials and construction techniques
Low cost building materials and construction techniques
 
Bricks
Bricks Bricks
Bricks
 
Gp 6 clay ppt final
Gp 6 clay ppt finalGp 6 clay ppt final
Gp 6 clay ppt final
 
Building suerface finishes
Building suerface finishesBuilding suerface finishes
Building suerface finishes
 
Cons122
Cons122Cons122
Cons122
 
Bricks
BricksBricks
Bricks
 

Recently uploaded

BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...
BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...
BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...Nguyen Thanh Tu Collection
 
Shark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsShark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsArubSultan
 
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptx
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptxBIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptx
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptxSayali Powar
 
4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptxmary850239
 
Narcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfNarcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfPrerana Jadhav
 
4.9.24 Social Capital and Social Exclusion.pptx
4.9.24 Social Capital and Social Exclusion.pptx4.9.24 Social Capital and Social Exclusion.pptx
4.9.24 Social Capital and Social Exclusion.pptxmary850239
 
Scientific Writing :Research Discourse
Scientific  Writing :Research  DiscourseScientific  Writing :Research  Discourse
Scientific Writing :Research DiscourseAnita GoswamiGiri
 
DBMSArchitecture_QueryProcessingandOptimization.pdf
DBMSArchitecture_QueryProcessingandOptimization.pdfDBMSArchitecture_QueryProcessingandOptimization.pdf
DBMSArchitecture_QueryProcessingandOptimization.pdfChristalin Nelson
 
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...DhatriParmar
 
Unraveling Hypertext_ Analyzing Postmodern Elements in Literature.pptx
Unraveling Hypertext_ Analyzing  Postmodern Elements in  Literature.pptxUnraveling Hypertext_ Analyzing  Postmodern Elements in  Literature.pptx
Unraveling Hypertext_ Analyzing Postmodern Elements in Literature.pptxDhatriParmar
 
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDecoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDhatriParmar
 
Congestive Cardiac Failure..presentation
Congestive Cardiac Failure..presentationCongestive Cardiac Failure..presentation
Congestive Cardiac Failure..presentationdeepaannamalai16
 
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...DrVipulVKapoor
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...Nguyen Thanh Tu Collection
 
ICS 2208 Lecture Slide Notes for Topic 6
ICS 2208 Lecture Slide Notes for Topic 6ICS 2208 Lecture Slide Notes for Topic 6
ICS 2208 Lecture Slide Notes for Topic 6Vanessa Camilleri
 
MS4 level being good citizen -imperative- (1) (1).pdf
MS4 level   being good citizen -imperative- (1) (1).pdfMS4 level   being good citizen -imperative- (1) (1).pdf
MS4 level being good citizen -imperative- (1) (1).pdfMr Bounab Samir
 
Indexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfIndexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfChristalin Nelson
 

Recently uploaded (20)

BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...
BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...
BÀI TẬP BỔ TRỢ 4 KĨ NĂNG TIẾNG ANH LỚP 8 - CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC ...
 
Shark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristicsShark introduction Morphology and its behaviour characteristics
Shark introduction Morphology and its behaviour characteristics
 
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptx
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptxBIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptx
BIOCHEMISTRY-CARBOHYDRATE METABOLISM CHAPTER 2.pptx
 
Introduction to Research ,Need for research, Need for design of Experiments, ...
Introduction to Research ,Need for research, Need for design of Experiments, ...Introduction to Research ,Need for research, Need for design of Experiments, ...
Introduction to Research ,Need for research, Need for design of Experiments, ...
 
CARNAVAL COM MAGIA E EUFORIA _
CARNAVAL COM MAGIA E EUFORIA            _CARNAVAL COM MAGIA E EUFORIA            _
CARNAVAL COM MAGIA E EUFORIA _
 
4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx4.9.24 School Desegregation in Boston.pptx
4.9.24 School Desegregation in Boston.pptx
 
Narcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdfNarcotic and Non Narcotic Analgesic..pdf
Narcotic and Non Narcotic Analgesic..pdf
 
4.9.24 Social Capital and Social Exclusion.pptx
4.9.24 Social Capital and Social Exclusion.pptx4.9.24 Social Capital and Social Exclusion.pptx
4.9.24 Social Capital and Social Exclusion.pptx
 
Scientific Writing :Research Discourse
Scientific  Writing :Research  DiscourseScientific  Writing :Research  Discourse
Scientific Writing :Research Discourse
 
DBMSArchitecture_QueryProcessingandOptimization.pdf
DBMSArchitecture_QueryProcessingandOptimization.pdfDBMSArchitecture_QueryProcessingandOptimization.pdf
DBMSArchitecture_QueryProcessingandOptimization.pdf
 
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...
Beauty Amidst the Bytes_ Unearthing Unexpected Advantages of the Digital Wast...
 
Unraveling Hypertext_ Analyzing Postmodern Elements in Literature.pptx
Unraveling Hypertext_ Analyzing  Postmodern Elements in  Literature.pptxUnraveling Hypertext_ Analyzing  Postmodern Elements in  Literature.pptx
Unraveling Hypertext_ Analyzing Postmodern Elements in Literature.pptx
 
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptxDecoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
Decoding the Tweet _ Practical Criticism in the Age of Hashtag.pptx
 
Congestive Cardiac Failure..presentation
Congestive Cardiac Failure..presentationCongestive Cardiac Failure..presentation
Congestive Cardiac Failure..presentation
 
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...
Geoffrey Chaucer Works II UGC NET JRF TGT PGT MA PHD Entrance Exam II History...
 
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 - I-LEARN SMART WORLD - CẢ NĂM - CÓ FILE NGHE (BẢN...
 
ICS 2208 Lecture Slide Notes for Topic 6
ICS 2208 Lecture Slide Notes for Topic 6ICS 2208 Lecture Slide Notes for Topic 6
ICS 2208 Lecture Slide Notes for Topic 6
 
prashanth updated resume 2024 for Teaching Profession
prashanth updated resume 2024 for Teaching Professionprashanth updated resume 2024 for Teaching Profession
prashanth updated resume 2024 for Teaching Profession
 
MS4 level being good citizen -imperative- (1) (1).pdf
MS4 level   being good citizen -imperative- (1) (1).pdfMS4 level   being good citizen -imperative- (1) (1).pdf
MS4 level being good citizen -imperative- (1) (1).pdf
 
Indexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdfIndexing Structures in Database Management system.pdf
Indexing Structures in Database Management system.pdf
 

Plastering

  • 1. 1
  • 2. Plastering is the process covering rough surfaces and uneven surfaces with a plastic material, called plaster or mortar to obtain an even, smooth, regular, clean, durable surface. Thursday, November 26, 2020 2
  • 4. • Ordinary Portland Cement (OPC) • Lime of Clay • Aggregates • Water • Admixture Thursday, November 26, 2020 4
  • 5. • It should be hard and durable • It should be possible to supply it during all weather conditions. • It should adhere to the background and should remain adhered during all climatic changes. • It should be cheap and economical. • It should offer good insulation against sound and high resistance against fire. • It should effectively check the penetration of moisture from the surface. Thursday, November 26, 2020 5
  • 6. Thursday, November 26, 2020 6 Trowel Float
  • 9. Thursday, November 26, 2020 9 Plastering MATERIALS LIME WATERCEMENT SAND
  • 10. Lime Plaster Cement Plaster Mud Plaster Stucco Plaster Plaster on lathe Thursday, November 26, 2020 10
  • 11.  When lime is used as the binding materials, it is called lime plaster.  Lime plaster is type of plaster composed of hydrated lime, sand and water.  Lime plaster is similar to Lime mortar, the main difference is the based on use rather that composition.  Mortar for lime plaster is usually prepared by mixing sand and lime in equal proportions. Cement is s to the small quantity added to the mixture to improve its strength. Thursday, November 26, 2020 11
  • 12.  When cement is used as the binding materials, it is called cement plaster. It is especially suited for damp condition.  Cement plaster is usually applied in one coat.  The thickness of coat can be 12mm, 15mm or 20mm depending upon the site conditions and type of building. When the thickness of plaster is more that 15mm. 6mm thickness of cement plaster and cement mortar 1;3 or 1;4 is recommended for cement plastering or RCC surfaces. Thursday, November 26, 2020 12
  • 13.  The surface to be plastered is prepared exactly in the same manner as that for lime or cement plaster.  Mud plaster is generally applied in two coats, the first coat being 18mm thick while the thickness of the second coat is kept 6mm. Thursday, November 26, 2020 13
  • 14. Thursday, November 26, 2020 14  Stucco is the name given to a decorative type of plaster which gives an excellent finish.  Stucco plaster can be used for interior as well as exterior surfaces.  It is usually laid in three coats making the total thickness of the plaster to about 25mm, the first coat is called the scratch coat; the second a finer coat,, also known as the brown coat, the third is called white coat or finishing coat.
  • 15. Lathing may be either of wood or that of expanded metal. Wooden lathe consist of thin strips of well seasoned wood, about 25mm .in width and 90 to 120cm. Thursday, November 26, 2020 15
  • 21. Cracking Efflorescence Falling out of plaster Blowing of plaster Thursday, November 26, 2020 21
  • 23. It is solvable salt are present in bricks or the mortar they absorb moisture. Thursday, November 26, 2020 23
  • 25. Cracking – Continuous damping of plaster, in order to slow down any rapid drying, to prevent cracking from happening. Thursday, November 26, 2020 25
  • 26. Blistering – Usually caused by uneven mixing of plaster, which could be prevented by ensuring a sufficient mixing between cement and its components to form plaster. Thursday, November 26, 2020 26
  • 27. Falling out of plaster a. The adhesion of the plaster to the back ground may not be perfect. b. The suction of the backing materials may not be uniform. c. Excessive thermal changes in plaster. Thursday, November 26, 2020 27
  • 28. Blowing of plaster a. This consist of information of small patches of plaster swelling but beyond the plastered surface and chiefly due to improper slaking or lime particles in the plaster. Thursday, November 26, 2020 28
  • 29. Thursday, November 26, 2020 29 Preparing of tools Preparation of plaster Applying Plaster Finish (Treatment)