As we all know, exterior painting is much more than just applying paint to the walls. The preparation work dictate the service life of the coating applied. Our painters have been fully trained in the Standard Painting Procedures (SPPs). All our employees, from junior to most senior, are trained in using the same procedures to execute the exterior preparation and painting work.
Because of using SPPs, our customers experience minimum re-dos, uniform quality, predictable results and long-term performance.
To achieve the long-term performance for the exterior coating application, we have adapted the Standardized Painting Procedures (SPPs) to suit our local weather conditions.
The following process is a typical example for exterior projects. We create unique procedures for each project — the work process will vary from job to job.
All exterior painting projects will use the following standard procedures (each site condition will dictate specific variations to the procedure):
Step 1. Mildew Treatment
Pre-treat areas contaminated with green moss algae growth with Trisodium Phosphate (TSP) and bleach solution. Soak contaminated areas to kill moss spores residing within cavities prior to pressure-washing the surfaces. This process will eliminate one of the leading causes of coating de-lamination (peeling paint).
Step 2. Pressure Washing
We pressure wash all surfaces prior to painting to clean off any dirt, airborne dust or pollution build-up, or any other foreign materials which may have accumulated on the surface. The pressure wash is done with pressure in the range of 1500 – 4000 PSI depending on the surfaces.
Pressure-wash all areas to be painted or other surfaces scheduled to be cleaned.
Completely rinse off all traces of chemicals.
Rinse all windows, doors, nearby shrubs and trees of pressure-wash debris.
Remove debris from sidewalks, drains, etc.
Step 3. Scraping, Hand Cleaning and Priming
Scrape to remove loose or chipped paint.
Hand clean scheduled surfaces to prepare for repainting.
Prime bare surfaces and repaired areas with premium specified primer (sometimes priming is done as a separate procedure, depending on the ease of access to the scheduled areas).
Step 4. Moisture Content Test
We perform regular moisture content tests on exterior surfaces (e.g. fencing, wooden fascia boards, wooden trims, etc.), where we have pressure washed the surfaces or due to inclement weather, when the moisture in the air is questionable. We follow the MPI (Master Painter Institute) guideline of 12-15% allowable moisture in the porous substrates.
This procedure eliminates another main cause of coating de-lamination.
Step 5. Application of Primers and Coatings
We use a variety of primers for the exteriors; this is to prepare the surface for future topcoats. It is a critical and integral part of the coating systems.
The following are some of common primers used:
For Wood: Mostly premium oil primer, sometimes latex primer for a specific wood condition.
For Metal: Usually premium bonding primer or rust-inhibiting primer.
For other Surfaces: Specialty primer or bonding primer.
Finishing Coats: We typically apply two topcoats, for durability and washability of surfaces. The two coats usually give us the desired finish results (more coats in some situations may be required).
Step 6. Cleaning & Protection of Surroundings
We perform daily clean ups to keep the premises free of any unnecessary accumulation of tools, equipment, supplies, material, debris, etc. during the project.
We will do our best to protect shrubs, plants, and landscaped areas wherever possible.