 |
|
Almost anything can be painted: Let us show you how! |
At one time or another, whether to change the ambiance in a room or better suit the décor, we’ve all repainted a wall or two in our homes. It is one of the most common household projects and, as such, most of us have acquired the requisite technique to successfully complete the task.
But what about projects where paint must be applied on other surfaces such as metal, ceramic or concrete? Each of these surfaces requires its own unique approach and raises its own set of questions. How should the surface be prepared to ensure proper paint adhesion? What type of paint should be used? Are there any special maintenance requirements? Whatever the surface and whatever the question, you’ll find your answers here...
NOTE: Terms followed by an asterisk (*) are described in the lexicon at the end of the guide. Handling instructions for each product are also included for your convenience. |
|
|
|
|
Metals | |
Metals such as iron, steel, cast iron, galvanized metals, aluminium, copper, brass, bronze, etc. are used to produce countless everyday items. The application of coatings on each of these surfaces requires special attention to ensure the beauty and durability of the finish. Regardless of the surface you intend to paint, there is one rule that is absolute: never paint in direct sunlight. |
|
Bare or previously painted iron or steel
Wrought iron and steel are used for numerous applications around the house: garden arbours, ramps, gazebos, siding, etc. Many of these metal products are designed for outdoor use and require adequate protection from the elements as a result.
Start by removing any rust, flakes, excess solder and other surface debris using a metal brush (for small surfaces) or sandblasting system (for irregularly shaped or large surfaces). Apply a conditioner/rust-remover* on the metal surface, rinse with water and wipe dry. To prevent the reappearance of rust, begin application of a rustproofing primer in the shortest possible timeframe following the cleaning process (within 4 hours). Apply metal paint. |
|
Steel and wrought iron with factory primer
Some steel and wrought iron products (such as garden furniture) are delivered with a coat of factory-applied paint or primer. This coating promotes paint adhesion and improves the durability of the finish. Paint may be applied directly on these items following a simple cleaning operation.
Clean all surfaces with paint thinner* to remove any grease, oil, dust or dirt. If the primer was damaged or scratched, allowing rust to form on the exposed surface, remove any rust using a steel brush or emery cloth (sandpaper) and clean the affected area with thinner. Allow to dry before applying metal paint. |
|
Galvanized steel
- Galvanized steel
Among its many applications, galvanized steel is used to make roofs for homes, fences and siding for garden sheds. Painting galvanized metals requires particular attention in terms of the products to be used and, more importantly, in terms of those to be avoided.
Use paint thinner* to remove any significant accumulations of grease or oil. Then, treat the entire surface (particularly the sections with exposed rust) with a metal conditioner/rust-remover* to ensure proper paint adhesion. Touch-up rusted sections with a primer before applying metal paint.
Caution: Never use muriatic (chlorhydric) acid, vinegar (acetic acid), copper sulphate or any other product not specifically designed for such use on galvanized metals; these products will accelerate the oxidization process and lead to the premature deterioration of the metal. |
|
Aluminium and light alloys
Aluminium, which is used to manufacture various household products such as ramps, exterior siding, window frames and doorsills, may also be painted. In certain situations, it may even be preferable. Without delivering an entire course on metallurgy, the basic fact is: when aluminium comes into contact with other metals, especially in the presence of liquid conductors (electrolytes), chlorides or stagnant water, it may develop visible signs of corrosion (pitting or water marks).
Before painting any aluminium surface, clean it using a metal conditioner/rust-remover* and rinse it. If the surface is rust-free, you may paint it directly using an acrylic latex paint. If there are signs of rust, remove the spots using a conditioner/rust-remover product or emery cloth (sandpaper), and touch-up these areas with a primer before painting. |
|
Copper, brass and bronze
There are many reasons that may require you to paint door handles, hinges or other ornaments made of brass, bronze or copper. The good news is - these metals are easy to paint.
Clean the entire surface using a metal conditioner/rust-remover*. No primer is required: simply apply the finishing varnish or paint (latex on copper and acrylic latex or alkyd on brass or bronze) directly on the clean metal surface. If the metal finish is particularly glossy, a light sanding with 240-grade sandpaper will help improve adhesion. Copper pipes must be completely dry before paint is applied. |
|
|
|
|
