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KBS MORTAR is a penetration seal for through-penetration fire stops. KBS MORTAR is a dry mortar mix with controlled swelling effect to provide a non-shrinking, homogeneous and smoke gas-tight seal for cables and utility penetrations in walls and floors. KBS MORTAR expands while it sets (up to 3%), ensuring a tight and crack-free seal. KBS MORTAR does not run or sag, allowing easy build-up of material a wall opening hence usually a shuttering is necessary on one side only. The low compressive strength of KBS MORTAR allows an easy retrofitting of cables and other utilities. The extraordinary yield of KBS MORTAR leads to high economic effeciency of such penetration seals. 1 kg KBS MORTAR mixed with water yiels to approx. 1.5 l volume. KBS MORTAR has been tested to international standards and carries ratings from 60 to 240 minutes.

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The underside of the opening is shut with suitable material (e.g. plywwood, wood board e.t.c).

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First seal all small openings in the mould with a thicker mixture (see recommendation of mixture). Let this sealing dry at least one hour.

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Mix  KBS MORTAR to a floating consistency (see recommendation of mixture). Use conventional tools of cement. Pour the sealing mortar up to floor level. Drying time approx one week before the mould is removed.

Productname: KBS MORTAR™
Product N.O: B060
Packaging: 25 kg -
Estimated volume: ca 36 dm³
Color: reddish

Technical Data Sheet


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