PAINTING MERIT BADGE Explain the proper safety procedures when - - PowerPoint PPT Presentation

BOY SCOUTS OF AMERICA

PAINTING

MERIT BADGE

Explain the proper safety procedures when preparing surfaces and applying coatings.

• Follow manufacturer’s instructions and warnings!
• Use the right product for the job.
• Work in a well ventilated area.
• Restrict traffic in your work area.
• Protect eyes from drips & splashes.
• Protect skin with gloves & clothing.
• If using flammable materials, have a fire extinguisher on hand.
• Know what the previous coating was. Avoid lead exposure.

Be alert for the presence of lead-based paint.

1978

SURFACE PREPARATION

• Surface preparation is one of the most important parts of the job.
• The purpose is to create a clean, dry, sound surface to which the

paint can properly adhere.

• Consider these factors:
• type and condition of surface
• location and environment
• coating to be used
• manufacturer’s recommendations

SURFACE PREPARATION

• Walls: free of dirt, grime, oil, grease, and chipped paint

Patch any holes. Sand lightly in a circular pattern.

• Wood: dry, clean, sanded, and dust-free

Sand in the direction of the grain. Apply a primer to new or bare wood.

• Concrete: free of dirt, oil, and grease

Sweep, wire brush, and vacuum as needed. Patch any holes.

• Metal: clean, smooth, rust-free, and dry

Use a wire brush and sandpaper as needed.

SURFACE PREPARATION

INDOORS

• Repair holes with patching compound or spackle.
• Sand lightly when dry.
• Caulk to fill cracks, seal joints, or bridge gaps.
• Mask with painter’s tape and plastic sheeting.
• After painting, slowly remove tape by pulling at a 90-degree angle.

PRIMERS

Primers are used to seal porous surfaces or to help paint adhere.

• Wood: oil-based or water-based for indoor or outdoor uses
• Drywall: sometimes needed when old paint is dark or textured
• Steel: oil-based for rough or poorly cleaned surfaces
• Concrete: usually highly alkaline

Explain how coatings can improve a surface.

• Pleasing appearance
• Durability
• Environmental resistance

Explain the difference between oil-based paints, acrylic-based paints, and water-based paints.

OIL-BASED PAINTS

• Oil-based paints contain a drying oil, oil varnish, or oil-modified resin

as a binder.

• They dry slower than water-based paints and have a strong odor
• The final paint film – the topcoat – is formed by oxidation, a chemical

process by which oxygen combines with the oil and hardens the paint.

Explain the difference between oil-based paints and water-based paints.

WATER-BASED PAINTS

• Water-based paints contain no oil, so they dry quicker and have less
• dor.
• The final paint film is formed

when the water evaporates.

• Water-based paints include

latex and acrylic.

USES OF PAINTS

ACRYLIC

• Acrylic paints are water-based.
• They are excellent for durability and color retention.
• They are easy to apply, and easy to clean up with soap and water.
• Acrylics are appropriate for interior and exterior surfaces.
• They are popular for craft uses as well.

USES OF PAINTS

ALKYD

• Alkyds are synthetic resins used in paints and other coatings.
• Alkyd paint is oil-based and its drying time depends on the type of
• il used.
• They have high durability for withstanding weather, and are often

used on the exterior of homes and businesses.

USES OF PAINTS

POLYURETHANE

• Polyurethane is a resin used in paints where durability and

adherence are needed.

• Some polyurethanes are mixed with acrylics to get the desired

durability, color retention, and resistance to abrasion.

USES OF PAINTS

LATEX

• Latex paint is made of water-based

pigments, synthetic polymers like vinyl acrylics, and other chemicals.

• Cleanup is easy with soap and water.
• Latex is not as durable as oil-based paints.
• Price varies widely with how much latex vs. filler the paint contains.

USES OF PAINTS

VARNISH

• Polyurethane varnish is best used on

everyday furniture that gets a lot of wear. Drying time is fast.

• Oil-based varnish is made with alkyd or phenolic resin. These

varnishes yellow faster. They’re used where resistance to weather is important like exterior doors and boat decks.

• Acrylic varnish is water-based and doesn’t penetrate wood as

deeply as oil-based varnish. As a result, it is not as hard or moisture- resistant.

Explain the importance of sheen.

• Sheen refers to the degree of shine or gloss in a coating.
• The sheen you choose will depend on what you are painting.
• High gloss coatings contain more resin and have more resistance

to weather and wear. Most exterior trims are made to a gloss or semi-gloss finish.

• Interior coatings use less resistant resins, and often contain more
• pigment. They are available in a variety of sheens from flat to

glossy.

SHEEN

• Flat – is typically used for ceilings and some interior walls.
• Eggshell – has a slight sheen and is popular for interior walls.
• Semi-gloss – is often used for trim, doors, and windows.

It’s also often used in kitchens and bathrooms because it is more washable and water resistant.

CAREERS

YOUR PROJECTS

• What will you paint?
• What type of paint will you use?
• How much paint will you need?
• What tools will you use?
• How will you prepare the surface and surrounding area?

YOUR PROJECTS

• What application method will you use?

YOUR PROJECTS

• Will you need to climb?

YOUR PROJECTS

• How will you clean up?

YOUR PROJECTS

Harmonizing colors:

• Select a main color.
• Use lesser, unequal amounts
• f secondary or accent colors.

YOUR PROJECTS

• How will you safely store the materials?