|
Primers
A primer acts as a barrier coat between existing
(original) surface and finish coats of paint. Primers bond with and act as a
‘ground’ for subsequent paint application, gilding and varnished
treatments.
Primers differ in make-up, and various types are
commercially available for use in a variety of functions.
Oil / Alkyd primers
Oil / Alkyd primers act as excellent primers for
exterior surfaces, wood and metal. Best suited for a base to oil based paints,
the use of acrylic paint over oil-based primers is also acceptable.
Oil
and water based interior and exterior paint, such as products by
Paintmanufacture
, can be applied
over oil-based primers.
The reverse is not true; it is generally a rule of thumb never to apply oil
based paint products and varnished over water-based primers.
Acrylic / Latex primers
Acrylic primers, such as
Ben Moore primer
, are commonly
used for interior and exterior surfaces, furniture and objects. Its quick
drying time allows for quicker final results. Not recommended for metal, glass
or other non-porous substrates. For high traffic zones or heavily used areas
oil based primers are recommended.
Gesso
Gesso is a primer suited for canvases, furniture
and objects. There are 2 basic types of gesso:
- Genuine
Traditionally used for the ground for paintings and
furniture, and in traditional gilding methods. Traditionally
made from a combination of animal hide glue (rabbit), titanium dioxide,
marble dust and water. The consistency of genuine gesso can be adjusted and
when made into a paste can be used to create raised relief, and
ornate elements for frames and decorative furniture, and for religious icons. Its
quick set time allows for rapid build up and can be easily carved and shaped
to any desired form.
- Acrylic
An acrylic polymer with titanium dioxide that replicates the effects of
genuine ground gesso. Primarily used for priming canvas for fine art
paintings, both oil and water based.
Shellac
Denatured alcohol based. Shellac is found in a
clear form or slightly amber in color. Also, white-pigmented shellac, such as
BIN, becomes an excellent primer. Pigmented shellac has strong adhesion
properties and is suitable for use with wood, metal, plaster and plastic. It is
a very fast drying product and should be used in a well-ventilated room. The
fast drying and strong adhesion qualities makes for a great primer for both oil
and acrylic based paints.
Safety:
Shellac is toxic. Ventilate area well. Always use disposable gloves
Clean up with Denatured Alcohol. Dispose
properly of used product and materials at your local facility. find...
Shellac
is a rapidly evaporating product that provides quick drying time and a rapid
bond with the surface. Allow time to harden before applying additional coats.
Pigmented
shellac, such as BIN, found in aerosol spray cans are ideal for priming cover
plates for light switches and electrical outlet covers.
| Quick Chart
- Using the correct primer |
| Surface |
type of
primer |
clean-up
solvent |
| Metal |
oil based
alkyd |
mineral spirits |
| pigmented
shellac |
denatured
alcohol |
| Wood |
oil based
alkyd |
mineral spirits |
water based
latex |
water with soap |
| pigmented
shellac |
denatured
alcohol |
| Plaster |
oil based
alkyd |
mineral spirits |
water based
latex |
water with soap |
| pigmented
shellac |
denatured
alcohol |
| Stone
& brick |
oil based
alkyd |
mineral spirits |
| pigmented
shellac |
denatured
alcohol |
| Glass |
|
|
| Marble |
oil based
alkyd |
mineral spirits |
| Linoleum |
oil based
alkyd |
mineral spirits |
|
|
|
Design Style features
Have
a question? Ask artSparx
Decorative
paint and glazing techniques
|