i. Texture Paint. Texture paint has a heavy consistency that is designed to produce a textured
effect on a surface. Since it is thick and can be molded to obtain various decorative effects, it is
particularly suitable for finishing sheetrock in drywall construction. You can make texture paint on the
job by mixing joint cement with paint to obtain a butter consistency. Mix the color before applying the
paint.
j. Spackling Compound. Spackling compound is a white powder. When mixed with water, it
sets quickly without swelling or shrinking. Use spackling compound to apply a texture effect on smooth
interior surfaces, such as plaster, sheetrock, wallboard, gypsum board, and primed and unprimed wood.
k. Joint Cement. Joint cement is used to fill depressions left by a hammer when nailing
sheetrock. You may also use it with perforated tape to fill the recessed edges of sheetrock joints. Mix
joint cement with water until a thick paste is formed, and apply it with a broad-blade putty knife or a
cement trowel.
l. Paint and Varnish Remover. Paint and varnish remover is made of chemical solvents that are
spread over the old finish to soften it so that it can be removed with a steel scraper, a putty knife, or steel
wool. It is available in paste or liquid form; the liquid form is faster-acting.
PART D: SELECTING EXTERIOR AND INTERIOR
PROTECTIVE COATINGS
You must consider the type of surface when selecting a
2-10. Exterior Protective Coatings.
protective coating for a particular job.
a. Types of Surfaces.
(1) Wood. When exterior wood surfaces are painted, you must decide whether the two-coat
or three-coat system is to be used. Primer is not necessary when you repaint previously painted surfaces
that are in good condition. For surfaces that have never been painted, use a primer coat, a body coat
(undercoat), and a final (finish) coat. Alkyd-modified, oil-based paints and latex, water-based, exterior
white paints (house paint) have replaced white oil-based paints. If a primer is required, use the type
recommended by the manufacturer of the final coat of paint.
(2) Metal. Metal surfaces, such as galvanized iron, tin, and steel building materials, require
protective coatings. Metal surfaces may rust if they are not protected against moisture. Copper does not
rust, but it gives off a corrosive wash that discolors the metal. Aluminum does not rust, but it corrodes if
it is unprotected. After applying the proper primer coat, apply conventional house paints (alkyd) or
exterior latex to metal surfaces (other than copper). With the exception of metal roofing and copper,
you may also use aluminum paint to paint metal surfaces.
(3) Masonry. A variety of paint products is available to coat masonry surfaces, such as brick,
cement, stucco, cinder block, or asbestos cement. One of the newer ideas for painting brick is a clear
coating that withstands weather, yet allows the natural
EN0562
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