Sikaflex® PRO-3 Purform® – The state-of-the-art joint sealant of the next generation

Sikaflex® PRO-3 Purform® is the state-of-the-art next-generation joint sealant for floors and building and civil engineering structures. Thanks to the advantages of Purform® technology, it offers the best balance of properties for the best overall result.

Sikaflex® PRO-3 Purform® impresses with faster curing and adhesion build-up as well as longer durability. The sealant does not cause discolouration on most natural stones and is compatible with many substrates. It also has an extremely low content of monomeric diisocyanates. Sikaflex® PRO-3 Purform® is the first choice for performance, quality and durability. Its range of applications extends from parking decks to sewage treatment plants and floors in warehouses, production and processing plants and – thanks to its extremely low emissions – even cleanrooms.

These joints can not only absorb movement but also withstand weathering, mechanical impact and chemical stress. Sikaflex® PRO-3 Purform® offers the best balance of properties.

Areas of application:

• Horizontal and vertical joint sealing applications indoors and outdoors
• Food industry and cleanrooms
• Storage and production areas
• Sewage treatment plants and tunnels
• Multi-storey and underground car parks
• Pedestrian and traffic areas

Advantages:

• Permissible total deformation 25%
• High mechanical and chemical resistance
• Fast development of mechanical properties
• High tear propagation resistance
• Very good ageing and weather resistance
• Excellent adhesion to many common building materials
• Extended application range at lower temperatures
• No edge-zone staining on a wide range of substrates
• Latest-generation PU technology Purform® by Sika®
• Very low monomer content, no training obligation for the safe use of diisocyanate-containing products (REACH restriction 2023)

Environmental information:

• Odour-neutral, solvent-free, very low emission
• EMICODE EC1PLUS, very low emission
• LEED v4 EQc 2: low-emission materials

Test certificates:

• CE marking and declaration of performance to DIN EN 15651-1 – joint sealants for non-structural applications on facade elements – classification F EXT-INT CC 25 HM
• CE marking and declaration of performance to EN 14188-2: cold-applied joint sealants for use on roads, airfields, bridge decks and parking decks (PW EXT-INT CC 25 HM)
• CE marking and declaration of performance to EN 15651-4: joint sealants for non-structural applications in buildings and pedestrian walkways (PW EXT-INT CC 25 HM)
• Fraunhofer IPA, Stuttgart (DE): cleanroom, VOC/SVOC outgassing, CSM method – test report no. SI 1909-1140
• ISEGA GmbH, Aschaffenburg (DE): migration behaviour to EN 1186, EN 13130, CEN/TS 14234, test report no. 54313 U 22
• Tensile strength, adhesion, volume change test to DIN EN ISO 11600 F Class 25 HM – SKZ Testing GmbH, Würzburg (DE): testing based on the construction and testing principles for wastewater facilities (DIBt) – test report no. 205279/19-V
• SKZ Testing GmbH, Würzburg (DE): determination of staining to ISO 16938-1, test report no. 205279/19-III

Application information:

• Flow behaviour: 0 mm (20 mm profile, +50 °C)
• Air temperature: min. 0 °C, max. +40 °C
• Substrate temperature: min. 0 °C, max. +40 °C, must be at least 3 °C above the dew point
• Substrate moisture: dry
• Backing material: closed-cell PE backing profiles, PE films permitted in exceptional cases
• Curing rate: ~3.5 mm/24 hours (+23 °C / 50% r.h.)
• Skin formation time: ~50 minutes (+23 °C / 50% r.h.)