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The Installation Handbook - Howarth Timber

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GTEC T-Bar Primary<br />

Main T<br />

60x60mm rock mineral wool batt<br />

100mm<br />

Movement control joints<br />

<strong>The</strong> continuity of the plasterboard and supporting structure<br />

should be broken by movement control joints:<br />

1. Where the ceiling runs 10m or more in any direction<br />

2. Where the ceiling crosses structural movement joints<br />

GTEC T-Bar<br />

Metal Angle<br />

GTEC T-Bar Cross T<br />

fixed vertically to<br />

TO DO TYPEFACE<br />

edge channels at<br />

top and bottom.<br />

GTEC T-Bar<br />

Cross T<br />

GTEC T-Bar<br />

Main T<br />

GTEC Movement Control Joint<br />

GTEC T-Bar Edge Channels<br />

GTEC T-Bar Main T<br />

GTEC T-Bar Edge Channels<br />

Wide flange for<br />

easier fixing of<br />

plasterboard<br />

Movement joints running parallel<br />

to the Cross T’s<br />

Leave a 12.5mm gap in the runs of either the GTEC T-Bar<br />

Primary Main T or Cross T as wide as the movement joint.<br />

Support the cut end of the primary Main T’s or Cross T’s<br />

with hangers no more than 50mm from the cut edge. When<br />

boarding the ceiling leave 12.5mm continuous<br />

gap along the line of the movement joint.<br />

Bulkheads<br />

Hangers at 1200mm or 900mm centres as required.<br />

GTEC T-Bar Cross T’s at 400mm centres.<br />

Ceiling Recess<br />

Ceiling recess detail incorporating a change in ceiling height<br />

is suitable for a maximum change in level of 600mm.<br />

Ceiling Openings<br />

For details contact Enquiryline.<br />

100mm<br />

43.0mm<br />

Front Elevation<br />

Side Elevation<br />

For use with GTEC T-Bar<br />

Suspension Wire<br />

Synia<br />

Synia<br />

Synia - <strong>The</strong> new plasterboard innovation from Lafarge.<br />

Synia is a unique plasterboard design from Lafarge that<br />

provides the ultimate flat ceiling in drylining.<br />

Traditionally, drylining plasterboards are manufactured<br />

with 2 tapered edges in order to create a seamless finish<br />

when jointed. For ceilings this has presented installers<br />

with the problem of extra planing, labour costs and time<br />

for the cut ends.<br />

Synia has been created with a unique edge design<br />

which, once fixed, reveals a 4 tapered edge for jointing.<br />

This offers the installer a faster, easier solution, resulting<br />

in the ultimate flat ceiling.<br />

THE INSTALLATION HANDBOOK 2008<br />

75

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