11.       What causes "pattern staining" on a ceiling tile?

Pattern staining on the face of a ceiling tile may be due to three adverse causes.
1) Dirty water may have dripped onto the back of the tile and soaked through to the face causing discoloured stains. These will normally be yellow or brown in colour and probably due to ferric oxide (rust) contamination.
2) Tiles in the immediate vicinity of air grilles or diffusers sometimes display black marks or streaks. This is due to dirt in the air being deposited on the tile’s surface as the air emanates from or returns to the distribution system. Smooth tiles such as Plain or Orcal plain etc are less likely to be affected.
3) Heat from a room will rise (due to convection) and migrate through a suspended ceiling towards the (normally) cooler ceiling void. Minute particles of dirt in the atmosphere will also rise and be deposited on the ceiling tile’s surface. However if the thermal insulation of the tile is not consistent (as often occurs with metal tiles with mineral wool pads in the back, that are not carefully laid flat particularly at the corners) then the dirt will be deposited unevenly with a build-up at the "cold spots" and appear as straw, brown or grey coloured marks

Using ceiling panels in interior is a great way to create high quality and functional ceiling spaces.

These panels can be both functional and aesthetically important. There are many uses of panels such as carrying light fixtures to providing special purpose for example acoustic, noise reduction and soundproofing. Ceiling panels come in a variety of materials such as made of cork, wood, metal etc. These panels are also suitable for almost all types of roof shapes such as truss, flat, vaulted. Let’s have a look at the most common functions of these panels used for interior lighting.

1) In the first type the entire ceiling area is covered by using the selected ceiling tiles or plans using a square grid. Metal ropes are used to "hang" the ceiling panels from constructed ceiling at corners of the grid. Then depending upon the panel materialthe panels are screwed to this grid from bottom. The main function of this type of paneling is to carry light fixtures. Thisis used in a very large column less space such as an auditorium or large office space. The grid layout makes it easy to maintain and service in the future. 2) In the second type the panels are used as secondary light source. Instead of carrying the light fixture with them, these panels only receive light from other lighting sources and reflects evenly in the entire space. For this purposed they have a very glossy finish to increase the amount of reflection. The shape and size of the panels or whether to use a single or multiple panels is very carefully worked out depending upon the number and location of direct light sources.

This type of paneling works best for small office spaces such as conference halls, cabins, residential living room etc. Since these panels also becomes a part of the entire design form, a very careful thought must be given about the theme of the design before installing them. 3) In the third type ceiling panels are used very creatively by creating levels. This requires a substantial ceiling height in order to play with levels and allow a good "head room" below the lowest point of the ceiling. In this type the lower level ceiling panels carry the light fixtures and throw direct light on the upper level ceiling panels so that they can distribute it evenly in remote area of the space. Light fixture can also be used to direct on the walls to create a "mood". the biggest advantage of this type of system is that the light source is hidden from direct vision and thus creates a very smooth and uniform lighting in the interior space. 4) There is one more way these panels can be used in interior spaces for distributing light. Instead of using them on ceiling they can be used on walls to reflect direct sunlight evenly. If used creatively on walls that receives direct sunlight, two functions can be easily achieved. a) Decreasing the intensity of sunlight b) Reflecting it to remote interior spaces using proper angle. But unlike an artificial light source the direction and intensity of sunlight constantly changes in a day. To cater this the panels can be made "adjustable" to serve the changed day conditions. I hope this article was useful to create a spark of imagination in your mind. Copyright Shrinivas Vaidya Author: Shrinivas Vaidya Shrinivas Vaidya is the webmaster of http://www.livingroomdatabase.com. Visit today to get more free tips on designing and decorating a beautiful and charming living room of your wildest dreams. Article Source: http://EzineArticles.com/?expert=Shrinivas_Vaidya Meet the Pacific albus tree, harbinger of green forestry The wood is so lightweight and so reflective, Jimerson says, that it sa natural for office ceilings, too. Philadelphia: City Hall Building Tour There are the modern sections where you have the normal office ceilings and vinyl floorings. OMG – What is this? – Dirty Energy Light Bulbs?, page 1 Just like the bulbs that go into office ceilings there is no reason why they can’t sell the glass tube separately from the ballast. Changing the landscape to suit the times series 7 factories had enlarged storage areas and fewer columns, roofs that could contain cooling towers of air-conditioning plants and lower office ceilings to save energy. Rise of the Robocars! … of freeway alongside silos and power poles, blue CAT-5 cable stuffed and strung like bundles of blue spaghetti behind pithy office ceilings outfitted with flickery fluorescents

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A few grids, some ceiling panels, a few wires and some elbow grease is all it takes to install drop ceilings. If you still have questions, then read on…

How to Install Drop Ceilings I feel every person has dormant creativity residing in him/her and sometimes it only takes a simple incident to bring out that spark!

I begin this article with the above line because I feel that home improvements and decorations that are done by the people who inhabit the house reveal their identity. So go ahead and learn the process of installing drop ceilings.

A drop ceiling What is it? This ceiling is composed of a metal grid and ceiling panels that are placed in that grid. They are often composed of translucent materials that cause an overall glow from the ceiling. The sizes of the drop ceiling panels vary.

The most common size that is available is 2 feet by 4 feet. Light fixtures can also be covered using drop ceilings. Today there are drop-ceiling tiles available too. These tiles come in many textures and colors, ensuring that you have a ceiling treatment that matches your d cor. Benefits of Drop Ceilings Drop ceilings are a good choice of ceiling treatment for many reasons; some of them have been listed below. * Efficient and Cost-Effective Drop ceilings can be used in a basement or laundry room because they are more practical. The reason for this is that drop ceilings do not consist of much construction and the materials that are used are economical. * Provide Sound Control These ceilings score above concrete ceilings because of the property of being able to soak up residual noise.

Drop ceilings have this feature because they are made up of fibers, which are terrific acoustical absorbers. * Provide Cover-up For Faults Despite the fact that drop ceilings are used to conceal unsightly pipes and electrical wiring, they do allow easy access to the equipment too. To reach the equipment all you need to do is lift the panel provided. * Provide Leveling A drop ceiling can be used to correct any leveling problems. This is possible as the metal grids can easily be adjusted to different heights as they are installed. How to Install Drop Ceilings

Here are the steps that will help you install a drop ceiling: * First of all it is important to decide on the style of the drop ceiling that you would like to use. Once you have done that decide on how many drop ceiling panels you will require. * Now center the panels within the room ensuring that the perimeter panels are of equal size as possible. * After the above process, it is important that you figure out how to install the drop ceiling. Remember that the minimum ceiling height that is required is 7 feet 6 inches. Also note that the drop ceiling needs to be installed at least 5 inches below any lights and three inches below any plumbing. * Once the above process is over, install your drop ceiling perpendicular to the joints; to do this you can follow the manufactures instructions. The common process that is followed for installation usually requires eyehooks to the joists and a wire that is used to hang if from the ceiling. While installing the ceiling, ensure that you are using the recommended type of hardware and wire. * Use tin snips to cut long pieces of wire and then make sure that all intersections in the grid are carefully secured. You can use a level to ensure that the drop ceiling is not being installed at an angle. * Place the panels into place after the installation of the grid. To fit the space, cut the perimeter panels into place (note that the actual panels are a little larger then the hole in the grid). Tips * All you need to do to ensure that the panels are equal in size and the number of panels you have calculated are right, draw a diagram of your ceiling on graph paper. While doing do remember to use a box to equal one square foot. When that is complete, draw the panel system onto your diagram. * You would be required to keep a saw handy to cut other panels apart from soft, absorbent and drywall panels. * If you are unable to procure the proper equipment or cannot cut it yourself, you could take the panels to the nearest home improvement store. Most of them will cut it for free. I would like to end by informing you that there are times when installing a drop ceiling becomes difficult because of awkward angels and the use of ladders. It is advisable to call a professional if you are uncomfortable with the task. By Rachna Gupta Published: 11/30/2007 USG Reports Fourth Quarter Net Loss of $172 Million – Industry … Walls & Ceilings reaches interior and exterior contractors, as well as architects in the wall and ceiling industry. Covering drywall, plaster, ceilings/acoustics, metal framing. Contemporary Stretch Ceilings , Drop Ceiling Tiles and Suspended … USG Suspension Ceiling Grid System is available in white, black and chrome finishes. It offers excellent corrosion resistance and is recommended for use in commercial and industrial Wavy Ceilings Three Dimensional Ceiling Tiles Luxury Housing Trends HGTV s I Want That took a look at a couple of cool new ceiling systems on their show this week, and let me say, the USG Ceilings Topo 3-D Ceiling System Panels are very unique.e… USG drops 172 million in 3rd Quarter It is apparent that USG has been taking a hit in the residential housing sector and their 172 million drop in 3rd Quarter earnings shows it.

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