Aden M&E PTE LTD

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FR Sealant General application considerations

PROMASEAL®-A Acrylic Sealant will adhere to a wide range of surfaces. All common foam backer rods are suitable as bond breakers. Surfaces do not need priming if dust free. If in doubt, apply the diluted (by adding 50% water) PROMASEAL®-A Acrylic Sealant to the surfaces by brush. It is essential that the correct width to depth ratio of PROMASEAL®-A Acrylic Sealant is maintained in control joint seals (see table below). In order to cure correctly, PROMASEAL®-A Acrylic Sealant must not be subjected to high humidity or moisture during the curing period.
PROMASEAL®-A Acrylic Sealant should not be applied if the air temperature is below 5°C or above 35°C. If the prevailing ambient temperature is outside this range it may eff ect the curing of the sealant; the surface temperature of the separating elements must also be taken into consideration.
As a general rule, PROMASEAL®-A Acrylic Sealant when applied around such services as pipes and cables, should not be applied in a gap width greater than 20mm to 25mm. It must also be recognised that sealant has performance limitations and should not be regarded as a “cure all” gap fi lling solution

Acrylic Sealant Brochure Sealant Drawing

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External or wet areas application

The penetration seals of PROMASEAL®-A Acrylic Sealant around fl oors also assists in stopping the passage of water and/or cold smoke through the fl oor or wall. However, for permanent water seals appropriate products should be used, e.g. silicones or polyurethanes. Wherever services penetrate barrier systems, PROMASEAL®-A Acrylic Sealant should be used in conjunction with the appropriate fi re stopping system to ensure there are no small gaps which will allow smoke to penetrate the barrier. In external or wet areas the use of PROMASEAL® Supa Mastic is recommended as an alternative. PROMASEAL® Supa Mastic is a one part polyurethane based sealant suitable for external and wet area applications. Installation as well as the approvals are similar to those prescribed for PROMASEAL®-A Acrylic Sealant. Please consult Promat for more details as the approvals for this new product are increasing at all times.

Unfortunately, these standards only test single cables, without any support system, exposed to a small gas flame by means of an elongated Bunsen burner. The heat applied during the test is localised to a small area. While such a test may be adequate for small cables carefully secured directly to a fire resisting wall or floor, it is arguably not suitable to assess the fire performance of larger cables or bunches of cables, exposed to a fully developed fire on all sides, particularly if they are supported on a suspended cable tray which may pass through compartment walls or floors. Although the cables may achieve the highest classification of the standard, they may not survive as expected if they are exposed on all sides to a fully developed fire, for example, the ISO834 time- temperature fire curve.

COC Sealant Data Sheet Project References