Sikaflex-415 Universal, Polyurethane Sealant for Floor & Wall Joints, Interior & Exterior, Concrete Grey, 600 mL

Sikaflex-415 Universal is resistant to:

• Water

• Sea water (EN 15651-4)

• Dilute alkalis

• Cement slurry

• Water dispersed detergent

Sikaflex-415 Universal is not resistant to:

• Alcohols

• Organic solvents

• Concentrated alkalis and acids

• Hydrocarbons and fuel

MOVEMENT JOINTS

The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be a minimum of 10 mm and a maximum of 40 mm.

All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are:

• The type of structure

• Dimensions

• Technical values of adjacent building materials

• Joint sealing material

• The specific exposure of the building and the joints

A width to depth ratio of 1:0.8 for floor joints must be maintained (for exceptions, see table below).

For larger joints, contact Sika Technical Services for additional information.

Example for typical joint widths for joints between concrete elements for exterior applications considering 25 % movement capability according to EN 15651-4:

For details of joint design and calculations refer to the following document, Sika Design guidlines: Dimensioning of construction joints.

CONNECTION JOINTS, SAW CUTS AND CRACK CONTROL JOINTS

Joints not designed to accommodate movement such as connection joints between building elements and saw-cut joints for crack control can be less than 10 mm.