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How to Select Industrial Products

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Architectural Coatings - Beyond Painting

Posted April 30, 2012 1:37 PM by cheme_wordsmithy
Pathfinder Tags: coatings

When the average consumer thinks of a 'coating', they likely think of paint; especially when it comes to buildings and structures. But the world of architectural coatings is much larger than just that off-white hue you're painting on your kitchen wall.

(Credit: HGTV -->)

Coatings are any substances designed to provide a decorative or protective layer to a surface. They can be used to enhance or change the properties of a material, provide protection, or change appearance.

Most architectural coatings are composed of three parts: body, binder (resin), and vehicle (solvent). The body is the solid-base portion of the coating and determines the film's hardness and abrasion resistance. The binder or resin is the film-forming component which affects properties like gloss potential, durability, flexibility, and toughness. The vehicle or solvent is the liquid portion that carries the body and binder, and adjusts its viscosity and application characteristics.

I imagine if you went to a store clerk in an appliance or home improvement store and asked for their selection of 'architectural coatings', you'd get a pretty amusing look or response. But that's because these products are identified primarily by their application. Paints, varnishes, sealers, lacquers, stains, and primers are all different, and serve different surfaces and functions.

In other words, the main question to ask yourself is: what surface am I coating and why am I coating it?

Nothing beats a good varnish on wood to both protect it and preserve its natural beauty. (Credit: GHARexpert.com)

To address the first part of the question, coating products will often be particularly designed for application to specific materials (asphalt, glass, wood, concrete, etc.) or for applying to certain surfaces (walls, floors, roofs, foundations, etc.). Cross-linking, evaporation, coalescence, and fusion bonding are the processes that describe how a coating adheres to a particular surface.

As for the second part of the question, coating products are typically designed to serve one or more specific functions. Functions include aesthetics, corrosion resistance, weather resistance, ESD control, heat resistance, abrasion protection, and waterproofing.

Even after defining the application, the number of coating types and individual chemistries can be overwhelming. That's where GlobalSpec's Architectural Coatings Selection Guide comes in. It discusses the most important factors involved in architectural coating selection, including an overview of different performance specifications and descriptions of product types and categories.

(Credit: Stately Kitsch)

Hopefully this type of overview can help greenhorns and veterans alike, whether you're ordering materials for a large construction project, sealing your back deck, or yes, just painting you kitchen sand dollar white. Or oxford white. Or baby's breath white. Or ventian… well, one of the other 151+ shades of white

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Guru

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#1

Re: Architectural Coatings - Beyond Painting

05/01/2012 7:05 AM

I am getting my house painted next week. I have selected paints from Asian Paints, India's leading paint mfr. All wall will be painted with "Royal" Emulson water based paint. Ceilings with white Emulson paint, Doors and Windows with Oil Paint White with glossy finish. My kitchen is facing east, my hall and bedroom are facing west. Here in India we have sun shine throughout the year except four months of monsoon. So in afternoons there is too much sun in hall and bedroom. I would like to know the colour suggestions from experts, I avoid dark shades. Please let me know your views.

Regards,

Suresh Sharma.

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#2
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Re: Architectural Coatings - Beyond Painting

05/01/2012 7:50 AM

If you look at the color wheel, a light blue or violet will help dampen the brightness of the sun....................a little. Window shades are probably the best option.

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Guru

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#3
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Re: Architectural Coatings - Beyond Painting

05/01/2012 7:58 AM

Thanks Kramarat. We have selected light violet for hall.We have window shades but in late afternoon there is too much sunlight.Regards.

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Re: Architectural Coatings - Beyond Painting

05/01/2012 8:16 AM

You may want to look into reflective window films that you you can apply yourself. 3M has some good products, and not too expensive. They not only reflect/block light in varying degrees, but heat also.

http://solutions.3m.com/wps/portal/3M/en_US/Window_Film/Solutions/Markets-Products/Residential/

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#5
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Re: Architectural Coatings - Beyond Painting

05/01/2012 8:17 AM

You say that in the afternoon there is too much sun in the hall and bedrooms, but you have avoided dark colors? The lighter the paint color, the brighter the room will feel. Window coverings can control light levels, but you haven't specified what level is acceptable. Do you work the night shift and need darkness in the bedroom during the day? If so, install draperies with a black-out lining and a cornice with a dust cover to help with any light leakage.

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