MasterJoint 440

Polyurethane Based, One Component, Low Modulus Joint Sealant

What is MasterJoint 440?

MasterJoint 440 polyurethane based, single part, UV and weathering resistant elastomeric joint sealant.

Recommended Uses

• Indoor and outdoor areas for vertical and horizontal applications

• Interior and exterior areas for vertical and horizontal applications

• Above grade joints of structures

• Restoration of joints in old and new buildings

• Parapet corners on roof and terraces

• Joints of prefabricated parts

• Moving joints up to 25%

• Connection joints between wood window, doorframes and walls

• Expansion joints between many different construction materials, especially concrete movement

• Between precast wall panels

• Precast rain gutter, roof drain pipes and parapet joints

• Joints and termination details of siding like PVC and aluminum

• To prevent leakage in aluminum, metal, PVC and woodworks and in termination details

Features and Benefits

• Single part, ready and easy to use

• No sagging, thixotropic

• No surface tackiness after full cure, dirt repellent surface

• Can be applied easily with hand gun

• Paintable *

• Cures with the humidity in the air

• Excellent elongation and elastic recovery

• Highly flexible