Oil paints or varnishes are increasingly being used by home builders. The varnish is made from alkyd resin mixed with the mother four by using oil or thinner as a solvent or diluting the paint. Used for painting wood and metal. Choosing an oil paint to use should be considered based on its use. outside or inside because there are different properties in terms of durability
Note : house building association trendyhome.co.th It is an eminent association in the home construction business for a long time. We have more than 5000 houses in Thailand.
Oil paint work on steel face. of a knock-down steel frame house or a small building It is recommended to use grade A oil paint, most of which cost 500 baht per gallon or more. It is durable and suitable for outdoor work. Helping to not have to paint and coat often.. because it is more durable than general grade oil paint
Oil paint in general stores, 80% will be grade B, price 200-350 baht per gallon. The color is less resistant to sunlight. Suitable for indoor use
Property is polyurethane paint. with very shiny properties, thick texture and resistance to sunlight, long service life suitable for bridges outside of the chemical tank Outside steel structures, chemical plants and ships, steel structures near the coast. Oil paint work on steel face. of a steel frame knock-down house near the beach Home builders who want to build a house near the beach It is recommended to use polyurethane paint. will be the most suitable There will be a price of 2,200-3,000 baht per gallon. The film is thick and has a very high durability. Makes the steel not have to be coated often.. But this grade we have to order from an agent shop Because the shop will rarely stock it because the price is high (not selling well), so there are few people using it.
System to use rust-proof primer grade B + topcoat oil Oil painting system and product application
Step 1 Surface Preparation Clean the surface by removing as much of the crystallized rust as possible. Then clean it to be free of dust, dust, rust and grease stains and leave it to dry.
Step 2. Primer painting Stir the red Kobe primer together. dilute thinner Then paint 1 coat of primer and paint 1 coat of Kobe gray primer. Let it dry for about 5 hours before the next step of painting.
Step 3 Paint the topcoat. Apply 2 coats of Kobe lacquer to the desired shade and let it dry before applying the next coat for about 8 hours. The use of thinner is not standard when mixing paint, anti-rust primer. There will be a problem with the color texture and thinner. poor solubility
Each layer of paint should be viewed. Dry period can be applied over Do not apply immediately because there will be problems later This paint system is for exposed steel structures. sunshine all day Maintenance coating should be done every 1 year.
The system uses a grade A rust-proof primer + topcoat oil. Oil painting system and product application
Step 1 Surface Preparation Clean the surface by removing as much of the crystallized rust as possible. Then clean it to be free of dust, dust, rust and grease stains and leave it to dry.
Step 2. Primer painting To mix the TOA Red oxide primer together. dilute thinner Then paint 1 coat of TOA Red oxide primer and paint 1 coat of TOA Gray primer. Let it dry for 5 hours before applying the next coat.
Step 3 Paint the topcoat. To paint the topcoat, TOA GLIPTON, the desired shade, 2 coats.
Allow to dry before applying the next coat for about 8 hours. Caution should be purchased with a standard thinner. The use of thinner is not standard when mixing paint, anti-rust primer. There will be a problem with the color texture and thinner. poor solubility
Each layer of paint should be viewed. Dry period can be applied over Do not apply immediately because there will be problems later
This paint system is for exterior steel structures and meets sunshine all day Maintenance coating should be done every 2 years.
Epoxy grade anti-rust primer application system + topcoat paint system and product application
Step 1 Surface Preparation Clean the surface by removing as much of the crystallized rust as possible, then clean it from dust, dirt, rust and grease, and let it dry.
Step 2 To paint the primer, stir together each part of TOA Rust Tech primer before mixing Part A and Part B. Stir the two parts together and dilute TOA Thinner No. 31 approximately 0-10. % Then paint 1 coat of TOA Rust Tech Primer and let it dry before applying the next coat for about 8 hours.
Step 3 Paint the topcoat. To paint over the polyurethane TOA Top guard, the desired shade, 2 coats.
Allow to dry approximately 8 hours before the next painting step. The dry period lasts approximately 3 days. Each coat should be looked at. The dry phase can be reapplied, but does not apply immediately. because there will be problems later The thinner used must be thinner for mixing epoxy Only this color system for steel structures that are outside and found. sunshine all day Maintenance should be done every 5 years.
TIS standard for topcoat oil paint will focus on safety from reducing the use of lead in products
Industrial standard for alkyd varnishes TIS 327-2553 (2010)
Office of Industrial Standards From the original quality standard TIS. 327-2553, now it has been prescribed more for manufacturers who are responsible and want their products to be reliable. Therefore, the standard TIS 2625-2557 has been established for alkyd coatings: “safety specific”, which manufacturers and importers must ask for permission from the TISI before they can produce and import, for details in TIS . This issue has specified the quantity
Lead not more than 0.01 percent, mercury not more than 0.01 percent, cadmium not more than 0.01 percent, and hexavalent chromium not more than 0.1 percent.
Note : The above dosage values have been tested that they do not cause harm to the health of users, residents and are harmful by inhalation. For touch paint in young children, TIS 2625-2557 standard via the Office of Industrial Standards has been proposed to the Cabinet promulgated as Standards are now in force.
TIP. High quality engineering standard rust primer coating with 2 layers of coating which are
1st layer, painted or sprayed red rust-proof primer, 2nd layer painted or sprayed gray rust-proof primer over red for easy inspection, 3-4th layer, oiled or sprayed topcoat Working in this way will have a large increase in wages. And takes a lot of time to work, no problem with the mechanic, the paint coating is not thorough, rust proof But what we get is that steel is harder to rust.
Conclusion of steel structure with rust corrosion protection
- Rust protection as well. steel coating
- Steel used must be free of rust, but if it is rusted, the surface must be removed before coating with a rust-proof primer.
- For rust proof paint adhesion well. It is necessary to clean the steel surface first.
- Use “turpentine” to clean steel.
- Should use quality anti-rust paint. It will be more cost-effective than anti-rust paint, low price.
- For rust proof foundation work. Black iron recommends Delta Red oxide because it meets TIS 2387-2555 standards (can mix with thinner No. 21 only) and TOA Red oxide of equivalent quality (can mix with generic AAA thinner).
- Galvanized paint can be applied to black steel. and is more resistant to rust than general rust-proof primers
- Topcoat oil. Should choose a quality grade, lead-free or low-lead, priced at 500 baht per gallon or more, should receive TIS 327-2553 standards and TIS 26252557 standards or either
- Should be primed to prevent rust thoroughly in every corner at least 2 coats and oil paint over the face 2 coats.
- Four coats each. Dry period can be applied over Do not apply immediately because there will be problems later
