On the CeilingSeptember 21st, 2010 | Posted by in Air Quality | Environment | Green Building | Green Homes | Green Products | Living Green | Water Conservation
So you’re renovating, or maybe even building something new, and you’ve finally finished framing out your new walls. Now you’re ready to put up your drywall and maybe some tile, or maybe even wallpaper—but what about the ceiling? Sure, you can just drywall it too (and hopefully you’ve been using recycled-content drywall), but there are several other options to consider as well.
The decision of how to make your ceiling can be influenced by a number of factors beyond your decorative choices. A few things to keep in mind are how much sound transmission in and out of the room you want to allow, whether water and/or humidity will be present, whether the room’s activities require any particular kind of acoustics, and whether you’ll be applying tiles.
Here are a number of green products designed for ceiling use that you may want to consider, and some ideas on how they might best be used in your building project.
1) Recycled Content Drywall
If you’re not already using drywall with recycled content for your walls, your ceiling may offer another opportunity to include it. Typical drywall is made of a core of mined gypsum and two outer layers of non-recycled paper. The mining of gypsum typically launches large amounts of particulate matter into the air, threatening both the respiratory health of the miners and the air quality of the surrounding areas. And like most mining, the extraction process leaves large scars on the landscape at the mining site, and often contributes to soil erosion on the slopes where it is mined.
Instead of mined gypsum, recycled-content drywall is made of synthetic gypsum—a byproduct of the process coal-fired power plants use to limit the amount of acid-rain-causing emissions they release into the air. And not only does the use of synthetic gypsum reduce manufacturing waste, but it’s purer than mined gypsum, making for drywall that’s stronger and easier to work with. As an added benefit, the paper facing used on recycled content drywall is 100% recycled.
2) Tectum Interior Ceiling Panels
A dropped ceiling of rectangular panels, typically made of sound-absorbing (acoustical) materials, is another option. A dropped ceiling consists of a grid of lightweight metal strips that are hung from either exposed beams or a drywall ceiling, which hold the panels in place without screws or adhesive. This allows for easy access to any wiring or ductwork underneath, as well as easy replacement of any panel that needs it. Acoustical panels reduce the amount of noise bouncing around within the room, while also limiting the amount of sound traveling through the ceiling to rooms above.
For a green option, Tectum interior ceiling panels are made of wood fibers that are bound together without chemicals and come from Aspen trees grown in FSC-certified forests. The air-drying, low-energy binding process uses only sand, limestone, salt, magnesium oxide (from seawater), and water that gets recycled after use. The finished panels don’t off-gas at all, and are non-toxic enough to be added to compost piles for soil amendment. So not only do you get a quieter room, for a healthier indoor environment, but you get it without hurting the outdoor environment either! And for even further reduction in the noise coming out of the room , take a look at QuietRock Soundproofing Drywall.
3) Durock Cement Backerboard
If the room you’re building is a bathroom or kitchen, or any other room where high humidity and spilled water are common occurrences, you’ll need to use backerboard –commonly called “blue board,” because a common brand is (you guessed it) blue. Backerboard is typically used underneath tiles even in dry areas, where it acts as a surface stiff enough to keep the surface from flexing and pushing them off—and in wet areas, it provides a layer of water-blocking protection for the framing and surrounding rooms.
Durock cement backerboard is not only resistant to moisture, but mold as well, protecting the room’s air quality. And concrete is so durable that it’ll be a long time before you have to replace it, which saves the waste of valuable resources. And it’s even made of recycled materials—it’s 10-20% recycled fly ash.