Ceiling & Grid
Why do I have to do a room
layout? Can't I just start in one corner and work
out?
Most walls are neither straight, nor square. It is necessary to lay
out the Ceiling pattern before starting to make sure you don't end
up with small and odd-shaped tiles. This also ensures full usage of
material.
Can I rest my light fixtures
on the back of the tile?
No, Ceiling tiles will not support the weight of light fixtures.
Fixture support brackets may be purchased at most lighting stores
or departments. Alternately, a piece of lumber resting across the
main tees may be used.
What is Fire-rated ceiling and
why do I need one?
Fire rated ceilings are part of a fire barrier between floors.
These are generally required in multi-use or multi-tenant
structures. These ceilings require special grid systems and special
tiles and must be installed in a specific manner. Always consult
the local authority having jurisdiction before starting such a
project.
I have a 12' room. Can I
install the 12' main tees by just cutting off the end
tabs?
No. Always start with a cut end. Main tees are punched 3" from each
end and 6" on centre through the length. This is to provide a
continuous 6" spacing after tees are spliced. By cutting approx.
27" from the end of the first main tee, you will preserve a
variable piece and can adjust for variances in room dimensions,
which almost always occur.
I have a very low basement and
don't want to drop the ceiling as much as the instructions call
for. Is there a way to keep it tighter to the joists
above?
Yes. By leaving out every second cross tee, you can install the
tiles and let them sit on top of the grid temporarily. Then install
the missing tees and slide the panels back into place.
I want to keep the noise from
the basement from reaching upstairs. What is the best tile to
use?
CGC tiles are displayed with "GOOD", "BETTER", "BEST" sound
blocking. Additionally, our brochure lists the "CAC" values of each
product. The higher the CAC, the more sound blocking capabilities
it has. In addition, rock wool insulation can be friction-fix
between the joists for better sound control.
How far apart should the main
tees be spaced?
The general rule is to space main tees 4' apart and the 4' cross
tees locked in at 2' spacing perpendicular to the main.
What is the required distance
between hanger wires?
Hanger wire should be spaced no further that 4' apart and secured
to the main tee with 3 or 4 twist. It is also recommended that a
hanger be placed in the first hanger hole where the main tees are
joined.
What is the minimum depth for
hanging a new ceiling?
A minimum clearance of 3" for mineral fiber panels is the general
rule. If fiberglass panels are used, the minimum height can be
reduced to approximately 1 ½".
How to do a standard room
layout?
Find center line of the room and mark 2' on either side of center
line, this will give the 4' spacing required for the main tee runs.
Review the layout and try to ensure the borders are balanced and
are not more that a half panel in width, this will allow for
maximum material usage.