Sika Boom®-121 Insulation

18 months from the date of production, if it is stored properly in undamaged, original, sealed packaging and if storage conditions are met.

Product must be stored in an upright position, in dry conditions, protected from direct sunlight and at temperatures between 5 °C and 25 °C.

-40 to 80 °C

• Cured foam will discolor if exposed to ultraviolet light.
• Paint or coat the cured foam for best results in outdoor applications

• Can be applied at any desired thickness as long as it is applied layer by layer. The thicker, the higher insulation value.
• For an effective insulation value, the recommended application thickness is 5 cm (R 5,66) and should be reached to this thickness with minimum 3 layers. It is not possible to get the ideal insulation value with 1 or 2 layers.

Elimination of the dew point

Full cure: 24 hours

Yield up to 3 m² with 1.5 cm thickness for one layer if applied from a distance of ~40 cm with normal application speed.

20 board feet

3 m² for 1,5 cm thickness

The substrate must be clean, sound and homogeneous, free from oils, grease, dust and loose or friable particles. Paint, cement laitance and other poorly adhering contaminants must be removed. Sika Boom®-121 Insulation adheres without primers and/or activators.

Shake Sika Boom®-121 Insulation can well for about 60 seconds before use. Turn the Sika Boom®-121 Insulation can upside down and screw the straw adapter firmly into place without pressing the valve. 

Turn red applicator tip to desired position.

Apply for 5 seconds with a 2-second pause in between applications (Applying product for more than 5 seconds at a time might produce some leakadge from the valve or straw connectors).

Regulate the foam flow by applying more or less pressure on the valve/adapter. Sika Boom®-121 Insulation can only be used in the upside down position, failure to invert the can will prevent the foam from dispensing properly. Take care to allow each layer to cure and expand sufficiently before applying additional layers. 

• Spray the foam 30-45 cm distance from the wall for vertical applications.
• Spray the foam 15-20 cm distance from the ceiling for horizontal applications

Clean all tools and application equipment immediately with Sika Boom® Cleaner. Uncured material may be removed from substrates and tools with Sika® Hand Cleaner. Once cured, residual material can only be removed mechanically. Refer to Sika Boom® Cleaner product data sheet for further information.