Sika Boom-553 Low Expansion - Low Expansion Polyurethane Foam - Sika

Sika Boom-553 Low Expansion - Low Expansion Polyurethane Foam - Sika

Sika Boom-553 Low Expansion is a one-component, self-expanding polyurethane foam for spray application.
It is ideal for filling connection joints around window and door frames, as it has low subsequent expansion as well as low expansive pressure.

Features

• Low expansive pressure
• Low subsequent expansion
• Very high yield
• Mono-component, ready to use
• Good thermal insulation
• Can be cut, sanded and painted
• Professional application with gun

Application areas

The product is designed for:

• Insulation and filling of cavities and voids
• Filling joints around window and door frames
• Insulation against cold and drafts
• Filling around pipes/duct penetrations

The product can be used for interior and exterior applications.

Application

1. Pre-wet the substrate with clean water.
   This helps ensure that the foam cures properly and prevents unwanted foam expansion.
2. Shake the aerosol well for at least 20 times before use.
   Note: Repeat agitation after long breaks in use.
3. Remove the cap from the aerosol.
4. Screw the aerosol onto the thread of the application gun.
5. Dispense the foam by pressing the trigger.
   IMPORTANT: To ensure proper flow, hold can upside down while dispensing.
   Note: The amount of foam extruded can be adjusted by applying more or less pressure to the trigger or by using the flow adjustment screw on the applicator gun.
6. Fill deep seams in several layers.
   IMPORTANT: Allow each coat to expand and harden sufficiently before rewetting with water for the application of the next coat.
   Notes: Only partially fill voids/cavities as the foam expands as it cures.
   Small voids can be filled using an extension tube, however this will reduce foam flow

Consumption

Joint yield based on 20 mm × 50 mm joint

Foam yield: ~49 liters
Yield in joint: ~30 m

Conditioning

750ml aerosols with rubber valve.