Sika offers a wide range of high-performance and durable sealants, tapes, spray foams and elastic adhesives for the building envelope, for interior finishing and for infrastructure construction. Typical applications include the sealing of movement joints between facade elements to make buildings weatherproof, the bonding of wood floors to reduce noise or the sealing of joints in airport aprons. However, for optimum adhesion, joint durability and critical, high performance applications the following priming and/or pre-treatment procedures must be followed: Other metals, such as copper, brass and titanium-zinc: Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth. After a waiting time of > 15 minutes (< 6 hours), apply Sika® Primer-3 N applied by brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours) Sikaflex 291 bonds extremely well to the materials commonly used in marine and also Motorhome and vehicle construction Removal techniques such as wire brushing, grinding, sanding or other suitable mechanical tools can be used.

The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles.Typical joint widths for joints between concrete elements for exterior applications Joint distance [m]

The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be ≥ 10 mm and ≤ 35 mm. A width to depth ratio of 2:1 for facade joints must be maintained (for exceptions, see table below).PVC has to be cleaned and pre-treated using Sika® Primer-215 applied with a brush. Before sealing, allow a drying time of > 30 minutes (< 8 hours). The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. Sikaflex® Floor adheres without primers and/or activators. PVC has to be cleaned and pre-treated using Sika® Primer-215 applied with a brush. Before sealing, allow a waiting time of > 30 minutes (< 8 hours).

Removal techniques such as wire brushing, grinding, grit blasting or other suitable mechanical tools can be used. Enamelled steel, aluminium, anodised aluminium, stainless steel, galvanised steel, powder coated metals or glazed tiles: Slightly roughen surface with a fine abrasive pad. Clean and pre-treat using Sika® Aktivator-205 applied with a clean cloth.

Typical joint widths for joints between concrete elements for interior applications Joint distance [m] The substrate must be clean, dry, sound and homogeneous, free from oils, grease, dust and loose or friable particles. Sikaflex® PRO adheres without primers and/or activators.

The growing demand in this market is fueled by an increasing awareness of the importance of high-performance sealants for the overall durability and energy efficiency of buildings, the increasing volume of high-rise projects and the continued replacement of mechanical fastening systems by adhesives due to better performance. Innovations

Sika Pro Select Sealants

However, for optimum adhesion and critical, high-performance applications, such as on multi-story buildings, highly stressed joints, extreme weather exposure or water immersion, the following priming and/or pre-treatment procedures shall be followed: Other metals, such as copper, brass and titanium-zinc, also have to be cleaned and pre-treated using Sika®Aktivator-205,wiped on with a clean towel. After the necessary flash-off time, use a brush to apply Sika®Primer-3 N and allow a further flash-off time of > 30 minutes (<8 hours) before sealing the joints. The substrate must be sound, clean, dry and free of all contaminants such as dirt, oil, grease, cement laitance, old sealants and poorly bonded paint coatings which could affect adhesion of the adhesive / sealant. The substrate must be of sufficient strength to resist with the stresses induced by the sealant during movement. Sika 291 i is also perfect for most caravan and motorhome applications as will allow for some movement but has an extremly good bond to properly cleaned and prepared surfaces. The joint width must be designed to suit the movement capability of the sealant. The joint width must be ≥ 10 mm and ≤ 40 mm. A width to depth ratio of 1:0,8 must be maintained (for exceptions, see table below).