Estimation & Specification on Paints
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The document provides a detailed overview of paint composition, including its components such as pigments, binders, extenders, and solvents. It discusses different types of paints, their applications, and characteristics like durability and drying times, while also outlining best practices for application and surface preparation. Additionally, it highlights the distinctions between water-based and oil-based paints, emphasizing the importance of choosing the right base coats for a long-lasting finish.
Estimation & Specification on Paints
- 1. SUBMITTED BY: VAIBHAV MUDGAL RITIKA ANAND PRAKRITI GUPTA
- 2. PAINT IS ANY LIQUID OR MASTIC COMPOSITION THAT AFTER APPLICATION TO A SUBSTRATE IN THIN LAYER , CONVERTS TO A SOLID FILM •IT IS A SIMPLY PIGMENT SUSPENDED WITH A LIQUID •IT IS USED TO DECORATE, PROTECT AND PROLONG THE LIFE OF NATURAL AND SYNTHETIC MATERIALS AND ACTS AS A BARRIER AGAINST ENVIRONMENTAL CONDITIONS
- 3. PIGMENT: IT IS USED TO IMPART COLOUR BINDER: A POLYMER, OFTEN REFERRED TO AS RESIN, FORMING A MATRIX TO HOLD THE PIGMENT IN PLACE EXTENDER: LARGER PIGMENT PARTICLES ADDED TO IMPROVE ADHESION , STRENGTHEN THE FILM AND SAVE BINDER SOLVENT(THINNER): EITHER AN ORGANIC SOLVENT OR WATER IS USED TO REDUCE THE VISCOSITY OF THE PAINT FOR BETTER ADDITIVES: USED TO MODIFY THE PROPERTIES OF THE LIQUID PAINT OR DRY FILM
- 4. EASE OF APPLICATIONGOOD FLOW OUT OF APPLICATION MARKS FORMING A CONTINUOUS PROTECTIVE FILM HIGH OPACITY QUICK DRYING CORROSION, WATER AND HEAT RESISTANCE COLOUR STABILITY ABRASION AND SCRATCH RESISTANCE DURABILITY FLEXIBILITY EASILY CLEANED
- 6. IT CONSISTS OF PORTLAND CEMENT AND OTHER INGREDIENTS LIKE LIME, PIGMENTS, HYDROSCOPIC SALTS, WATER REPELLANTS, FUNGICIDES ETC. COMPOSITION PORTLAND CEMENT 65% HYDRATED LIME 25% AND OTHER INGREDIENTS IN SUITABLE PROPORTIONS THE MATERIAL SHALL BE FREE FROM ORGANIC BINDERS THE MATERIAL SHALL BE IN THE POWDER FORM, FREE FROM LUMPS WHEN MIXED WITH WATER DURABILITY: WHEN PREPARED AND TESTED FOR NORMAL OUTDOOR EXPOSURE A GENERAL BREAKDOWN OF THE FILM PREPARED FROM THE REGISTERED SAMPLE SHALL NOT OCCUR IN LESS THAN 18 MONTHS
- 7. PACKING: THE DRY MATERIAL SHALL BE PACKED IN POLYTHENE BAGS IN SUITABLE METAL/ PLASTICC CONTAINERS MARKING: EACH CONTAINER SHALL BE MARKED WITH NAME OF THE MATERIAL INDICATION OF THE SOURCE OF MANUFACTURE MASS OF THE MATERIAL MONTH AND YEAR OF MANUFACTURE CHARACTER REQUIREMENT DRYING TIME AND RECOATING PROPERTIES NOT MORE THAN 24 HOURS FINISH SMOOTH AND MALT COLOUR CLOSE MATCH TO THE SPECIFIED IS CODE COLOUR
- 20. Paint and natural wood finishes are an effective way to protect and decorate surfaces. For a decorative finish coat to last and look as good as possible, the right base coats are essential. For interiors, a combined primer-first coat is a good option. Interior Painting can be done by brush, rollers, pads and also through the method of spray gun. Traditionally, homeowners had a choice between water-based and oil-based paints, but because they tend to have higher VOC levels, it's important to consider if oil-based paints are for you.
- 21. Most paints fall into one of the general categories of eggshell, semi-gloss, flat or gloss. Paints can be categorized in two types i.e. Water based paint and Oil based paint. There are different types of interior paints for e.g. Matt paint,Matt Enamel,SatinEggshell,Semi- Gloss,Gloss Paint etc.
- 22. • low VOCs • easy cleanup with water • quick drying • an elastic, flexible finish resistant to cracking • stable color over time, without yellowing
- 23. • attractive gloss • good "leveling" (brush strokes fill themselves in to create a smooth finish) • hard, durable finish. Oil Based Paints are popular for glossy woodwork, doors, and furniture, as well as demanding surfaces such as floors. Be cautious when switching to a water-based paint if the surface has previously been coated with an oil-based product, as the new paint may not stick. In this situation,washing the surface and then roughening it all over with a medium to smooth grit sandpaper—making it clean, dry, and dull in order to prevent peeling of the new coat.
- 24. When applying over a porus surface,mix wall and ceiling primer and undercoat with upto 20% water to make a diluted coat.this will seal the surface and promote adhesion. Dilution rate will depend on the porosity of the surface.A rear patch is required to determine the correct dilution rate. Finish with a full coat of wall and ceiling and undercoat to enhance the top coat colour.
- 25. Sand down and then clean with a detergent. Apply one full coat of wall and ceiling primer and undercoat to promote adhesion and enhance the top coat colour. For plaster surface which are porous,chalky or slightly degraded but otherwise structurally sound,apply one coat of farrow and ball masonry and plaster stabilizing primer.
- 26. Although latex- and oil-based paints can be applied with rollers or pads as well as brushes, cleaning them after using oil paints is difficult and will require lots of white spirit or thinner. Primer Use a brush, roller or pad. First Coat Use a brush, roller or pad. Flat Use a brush, roller, pad or sprayer.
- 27. When using more than one tin of the same colour check than the batch numbers are the same. Stir paint thoroughly before use. Apply two coats using a brush or roller. On application of the final coat lay off the paint in a single direction. Estate emulsion modern emulsions, dead flat, full gloss and estate eggshell as eggshell are dry in two hours and can be recoated in four hours. Clean brushes and rollers with warm soapy water.