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Vapour Control

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Vapour Control

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Description

Description :

Pre-fabricated waterproofing membrane with the specific function of acting as an extremely effective shield against vapour passage.
The compound is made of distilled bitumen and elasto-Plastomers (APP type), reinforced with a rot-proof fiberglass mat.
The Technobit Vapour Control membrane on the exposed side features a series of embossed dimples (more than 1000 per m2 ), formed by a special heat activated compound which ensures a strong and durable adhesion to the insulating panels. The advantages of the Technobit Vapour Control membranes are basically those aimed at avoiding the use of oxidized bitumen and cold bonding substances (mastic, polyurethane glues) for the application and adhesion of insulating panels. The hot oxidised bitumen, in addition to being extremely dangerous (burns, fumes, etc.), loses in little time its adhesive capacity, exposing the covering to the known dangers due to the strength of persisting wind action and the deformations of the roof covering.

Method of Application :

For the application of the membrane the use of heat is generally used by means of
a gas torch or specific hot air machine. Use protective devices required by law. The
application by heat is not suggested when on heat sensitive materials (polystyrene
insulation).

• Coordinate the operations in a way to not cause damage to the construction elements and underground structure. Avoid to leave the structure for the
night or for periods of prolonged work interruptions without having been properly sealed.
• The application surface must not have any depressions to avoid the risk of ponding water, the slope must be at least 1.5% on concrete decks and 3% for steel or wooden ones, this to guarantee a proper run off of rainwater.
• The water drainage spouts should be sufficiently big enough to allow for rain water to be eliminated in an efficient way.
• Prepare cementitious substrates, including verticals and details, with a bituminous primer either by brush or airless, approx. 300/400 g/m2
• Allow this preparation layer to dry before proceeding with any other operation.
• With prefabricated constructions, apply a suitable reinforcing strip along all joints. In the presence of construction joints, prefabricated panels or metal decks, suitable expansion joints are to be considered.
• The membranes must be applied to the substrate fully bonded.
• All details, perimeters, verticals, change of slope as well as projecting area must be fully bonded.

Storage & Handling :

Technobit Vapour Control rolls should be kept in an upright position in a flat, properly ventilated and sheltered storage area.

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