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7.6.5
Icopal TK 400; Fleeceback Adhesive Partly Bonded
The application temperatures have to be between +10 °C and
+45 °C (air/substrate temperature), ideally at +20 °C. Low
temperatures delay the curing process. When exceeding the open
time, skin formation sets in and this will affect the bond between
adhesive and roofing membrane.
Vigorously shake the can before use and then screw it onto the
Icopal foam gun. Icopal foam gun XL, equipped with a 60 cm lance,
ensures easy and comfortable application. To ensure a reliable
bond to the substrate, apply at least three uniform strands of
adhesive (min. strand diameter: 30 mm) per m² to be covered.
Please refer to the table on page 3 of the Data Sheet for the proper
number and positioning of adhesive strands.
Immediately after applying TK 400, roll the fleece-backed roofing
membrane into the adhesive bed and firmly press it down, e.g. with
a soft broom. If the adhesive tends to foam after application (post-
expansion), press the roofing membrane down again.
When working at low air humidity), the bond strength can
be increased and adhesive curing be accelerated by slightly
moistening the lamination or the absorbent substrate with water
(do not produce a water film).
Replace the emptied can immediately by a new can. Never remove
the can forcibly from the gun. If the gun is not used for a longer
time, clean it thoroughly with PU Cleaner.
7.6.6
Icopal TK 914; PVC Contact Adhesive
The Monarplan® FM and Monarplan® G reinforced membranes
can be adhered using Monarplan® Contact Adhesive.
Icopal TK 914 PVC Contact Adhesive is a solvent based adhesive.
This method is typically employed at details such as upstands,
rooflights, etc.
The surface, on or against which adhesive is to be applied, shall
be clean, smooth, dry, free of fins, sharp edges, loose and foreign
materials, oil and grease. Depressions greater than 6 mm should
be feathered, using epoxy, mortar or other approved patching
material. All sharp projections should be removed by sweeping,
blowing or vacuum cleaning.
After thorough stirring (minimum 5 minutes), apply Icopal TK 914
PVC Contact Adhesive to both substrate and membrane using a
25 mm medium nap roller. Application shall be continuous and
uniform avoiding globs or puddles.
An open time of 5 to 50 minutes, based on drying conditions
is recommended before assembly. Icopal TK 914 PVC Contact
Adhesive must be allowed to dry until it does not string or stick to
a dry finger touch.
Any coated area which has been exposed to rain should be allowed
to dry and then recoated. Do not apply adhesive to areas to be hot
air welded.
Monarplan
®
Installation manual
062014V1
31
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