Installation Instructions

30 SABIC Innovative Plastics
Edge sealing
In all cases Lexan Thermoclear sheet should be
mounted with the ribs running downwards to assist
condensation water drainage. Algae growth, in the
form of a green deposit inside the sheet channels, may
occasionally be a problem. It is the result of permanent
condensation inside the channels due to particular
temperature conditions.
Since moisture build-up and dust/insect contamination
inside the channels can be a major problem, one of the
most important aspects of installation is edge sealing,
particularly of the open-ended channels. There are
several techniques that can be adopted to signicantly
reduce contamination, the choice depending largely on
the prevailing environmental conditions.
Sealing Tape
It should be noted that the tape delivered on
Thermoclear sheet is for protection, during
transportation and storage, only and is not an
impermeable sealing/ installation tape. This tape should
be replaced prior to installation with a tape as described
below.
Before taping, approximately 50 mm of the masking
should be removed from all sheet edges. The remaining
masking should be removed only when installation is
completed.
• The tape should have good weathering resistance,
without loss of long-term adhesion or mechanical
strength.
• The tape should have good resistance to tearing and
other damage during installation and handling.
• In close co-operation with the company Multifoil, an
anti-dust impermeable tape G3600 and an anti-dust
venting tape AD3400/AD4500 have been developed.
Multifoil will provide within Europe a 10 Year
Guarantee on the operation of the tapes.
MULTIFOIL B.V.
Laanakkerweg 12
4131 PA Vianen
The Netherlands
tel. [phone]
fax. [phone]
Sealing Guidelines
The following Guidelines are recommended to minimise
sealing and contamination problems:
• Ensure that all sheet edges are smooth and rounded
before applying the tape.
• All channels should be blown free of dust before sealing.
• Ensure tape is completely covered by glazing proles,
ashings, end closures, etc. No tape should be left
exposed when installation is complete.
• Replace any damaged tape before nal installation.
• Recommended sealing tapes for glazing Lexan
Thermoclear sheet are available from most approved
Lexan Thermoclear distributors and specialised installers.
Standard Glazing Conditions
In standard glazing conditions, the top end channels are
sealed with an impermeable tape and the bottom end
channels are sealed with a perforated lter tape.
See g. 20 and 21.
An additional ‘U’ prole can be installed to cover the
perforated bottom tape and to facilitate condensation
drainage. (See g. 24 and 25).
Sealing Guidelines
Impermeable tape
Venting tape
‘U’ profile
20
G3600
AD3400/AD4500
21