Page 127 - FOR APPROVAL - DLSU BINAN

Porous substrates CLEANING OF TOOLS
Concrete, aerated concrete and cement based renders,
mortars and bricks surfaces must be primed using Clean all tools and application equipment with Sika®
Sika® Primer-3 N applied by brush.Before sealing, al- Remover-208 or equivalent immediately after use.
low a waiting time of > 30 minutes (< 8 hours). Hardened material can only be removed mechanically.
For more details such as application and flash-off For cleaning skin, use Sika® Cleaning Wipes-100 or
times, refer to the most recent Product Data Sheet of eqiuvalent
the respective pre-treatment product.
Adhesion tests on project specific substrates must be FURTHER DOCUMENTS
performed and procedures must be agreed with all
parties before full project application. ▪ Pre-treatment Sealing and Bonding Chart
Contact Sika Technical Services for additional informa- ▪ Method Statement: Joint Sealing
tion. ▪ Method Statement: Joint Maintenance, Cleaning and
Note: Primers and activators are adhesion promoters Renovation
and not an alternative to improve poor preparation / ▪ Technical Manual: Facade Sealing
cleaning of the joint surface. Primers also improve the ▪ Sika passive fire protection handbook
long term adhesion performance of the sealed joint.
LIMITATIONS
APPLICATION METHOD / TOOLS
▪ Sikaflex®-400 Fire can be over-painted with most
Reference must be made to further documentation conventional facade paint coating systems. However,
where applicable, such as relevant method statement, paints must first be tested to ensure compatibility by
application manual and installation or working instruc- carrying out preliminary trials (e.g. according to ISO
tions. technical paper: Paintability and Paint Compatibility
Masking of Sealants). Optimum results are obtained when the
It is recommended to use masking tape where neat or sealant is allowed to fully cure first. Note: non-flex-
exact joint lines are required. Remove the tape within ible paint systems may impair the elasticity of the
the skin time after finishing. sealant and lead to cracking of the paint coating. De-
Joint Backing pending on type of paint used, plasticizer migration
After the required substrate preparation, insert a suit- may occur causing the paint to become surface
able backing rod to the required depth. ‘tacky’.
Priming ▪ Color variations may occur due to the exposure in
If required, prime the joint surfaces as recommended service to chemicals, high temperatures and/or UV-
in substrate preparation. Avoid excessive application radiation (especially with white colour shade). This
of primer to avoid causing puddles at the base of the effect is aesthetic and does not adversely influence
joint. the technical performance or durability of the
Application product.
Sikaflex®-400 Fire is supplied ready to use. ▪ Do not use on natural stone.
Prepare the end of the foil pack, insert into the seal- ▪ Do not use on bituminous substrates, natural rubber,
ant gun and fit the nozzle. Extrude Sikaflex®-400 Fire EPDM rubber or on any building materials which
into the joint ensuring that it comes into full contact might leach oils, plasticizers or solvents that could
with the sides of the joint and avoiding any air entrap- degrade the sealant.
ment. ▪ Do not use to seal joints in and around swimming
Finishing pools.
As soon as possible after application, sealant must be ▪ Do not use for joints under water pressure or per-
firmly tooled against the joint sides to ensure ad- manent water immersion.
equate adhesion and a smooth finish. ▪ Do not expose uncured Sikaflex®-400 Fire to alcohol
Use a compatible tooling agent (e.g. Sika® Tooling containing products as this may interfere with the
Agent N or equivalent) to smooth the joint surface. curing reaction
Water can be used. Do not use tooling products con-
taining solvents. BASIS OF PRODUCT DATA

All technical data stated in this Product Data Sheet are
based on laboratory tests. Actual measured data may
vary due to circumstances beyond our control.

LOCAL RESTRICTIONS

Please note that as a result of specific local regula-
tions the performance of this product may vary from
country to country. Please consult the local Product
Data Sheet for the exact description of the application
fields.

Product Data Sheet
Sikaflex®-400 Fire
March 2019, Version 02.01
020515010000000026

3 / 4

MPW CORPORATION - MATERIALS APPROVAL
MPW C O RPO R A TI O N - MA TERI ALS AP P R O V AL