Product Data Sheet Safety Data Sheet Show all documents

Sika Boom®-121 Insulation

ONE COMPONENT, MULTIPURPOSE, STRAW APPLIED POLYURETHANE FOAM

Sika Boom®-121 Insulation is a one-component, polyurethane spray foam that provides heat and sound insulation

  • R value of 5,66 (per inch).
  • Excellent thermal insulation value (0.025 W/(m.K).
  • Excellent adhesion to many building materials.
  • May be applied at temperatures between +5 °C and 30 °C.
  • 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.
  • Paintable.
  • Does not contain any propellant gases.
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Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Rim joist sealer.
  • Roofs, attics, basements, interior walls, interfloor overlapping.
  • Air sealing and insulating.
  • Elimination of thermal bridges.
 

Advantages

  • R value of 5,66 (per inch).
  • Excellent thermal insulation value (0.025 W/(m.K).
  • Excellent adhesion to many building materials.
  • May be applied at temperatures between +5 °C and 30 °C.
  • 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.
  • Paintable.
  • Does not contain any propellant gases.

Packaging

Net weight: 807 mL (775 g) can / 12 cans per case

Colour

Light yellow

Product Details

Product Information

Shelf Life

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

Storage Conditions

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

Density

15±1 kg/m3

ASTM D1622
Technical Information

Compressive Strength

0,03 MPa

DIN 53421

Thermal Conductivity

0,025 W/m.K (at 20°C)

DIN 52612

Service Temperature

-40 to 80 °C

Resistance to UV Exposure

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

Resistance to Fire

B3 class of cured foam

DIN 4102-1

Application

Application Information

Layer Thickness

  • 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.

Dew Point

Elimination of the dew point

Curing Time

Full cure: 24 hours

Tack-Free time: 4 min

ASTM C1620
Consumption

Yield

3 m² for 1,5 cm thickness
Application steps

SUBSTRATE PREPARATION

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.

MIXING

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.

 

APPLICATION

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 UP

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.

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