Bostik Pro PU91 Construction Sealant – Black (300ml)

Strength, flexibility, and reliability the Bostik Pro PU91 Construction Sealant is your professional solution for sealing high-movement construction joints. Specially formulated with polyurethane technology, this sealant provides long-term durability in heavy-duty applications like warehouse floors and high-rise buildings.

With a 25% movement capability and high modulus performance, PU91 adapts to structural shifts without cracking, while its primer-free, bubble-free application ensures a smooth and efficient installation—indoors or outdoors.

Features & Benefits

• Handles up to 25% joint movement

• Professional-grade polyurethane formulation

• High modulus for tough construction environments

• Bubble-free finish for a clean, professional look

• No primer required on most common substrates

• Resistant to environmental stress and weathering

• Interior and exterior use

• Ideal for warehouse floors, car parks, gallery slabs, and more

• Colour: Black

• Size: 300ml cartridge

Common Applications

• Construction joints in concrete floors

• Sealing between precast panels or expansion joints

• Joints in multi-storey car parks or industrial flooring

• Movement joints in high-rise and commercial buildings

• External façades and pavement joints

FAQs

Q1: Can Bostik PU91 be used outdoors?

A: Yes, it is fully suitable for exterior use and is resistant to weather and environmental stress.

Q2: Do I need to apply a primer before using this sealant?

A: No primer is required for most common construction materials, making application quicker and easier.