|
FIXING
For screwing it is recommended to
use self-drilling countersunk screw
in stainless steel. Screw diameter
should be from 3.5 - 4.2mm and length
should be 2.5 to 3 times the panel
thickness. Fixings at 250mm nominal
centers, perimeter of panel fixings
should be 10mm from the edge of
the board and all edges should coincide
with support structures. Thinner
boards can be stapled with rust
proof staples.
CUTTING
The boards can be easily cut either
longitudinally or traversely. A
cut should be made on the face side
of the board by means of a cutter
or knife. A line may be drawn prior
to cutting. The line can be drawn
down the board at the required distance
and is scored with the knife at
the end of the rule. The boards
should then be pressed with both
hands, cut and snap over a straight
edge.
SAWING
Can be easily cut using a normal
saw, fret saw or an electric tool.
When large quantities of the boards
are to be cut, the use of circular
handsaw is advisable.
DRILLING
Use masonry drills to countersink
or drill screws. Use low speed drills
for better results. Place the board
under the drilling location for
a clean hole. Do not use hammer
action.
|
PLANING
& SANDING
The
edge can be planed or smoothened
with a surform, rasp or file, Use
conventional papers for sanding.
NAILING
Can be manual or power nailed using
a flat-headed, preferably stainless
steel nail. Diameter should be 2.2
or 3.1mm, length 3 to 3.5 times
the panel thickness. For power nailing
tools should be set to 3-4 bars
and then finely adjusted to achieve
required penetration. It is essential
to steadily position the board on
the background structure.
JOINTING
MAGNELiTE U.S.A Magnesium Silicate
Boards are suitable for fixing to
both timber and metal framing. Studs
are recommended to be placed at
407mm centers. Gap of 4mm between
joints of 2 boards is recommended.
Before filling, each gap must be
clean and all dust removed (using
steel brush), otherwise the contact
point between sealants and board
will be without bonding and can
result in surface cracking. Should
be constructed according to local
building regulations & practice.
SUPPORT
STRUCTURES
On timber or steel for 3mm, 4mm,
6mm, 8mm, 9mm supports would be
at 400 centers. For 10mm, 12mm at
600 centers.
|
