Professional sealing of joints in construction

In modern construction, joint sealing plays a key role in the durability and efficiency of structures. Whether it is an industrial warehouse or a hydraulic structure, choosing the right product means preventing leaks, structural damage and operational downtime. In this context, high-tech waterproofing products become true design allies.
Proind, which has always been a benchmark for reliable technical solutions, offers two high-performance products: Giuntoflex, designed for elastic sealing in environments without water, and Expander K1, ideal for ensuring watertightness in immersion conditions.

In recent years, advances in building materials have led to the development of high-tech sealants capable of meeting increasingly specific requirements: structural movement, vibrations, exposure to chemicals and continuous presence of water.
The use of these products not only increases the reliability of the work over time, but also simplifies the application phases, thanks to formulations designed to offer optimal adhesion, ease of installation and fast drying times.
Whether it is an industrial floor subject to heavy traffic or a joint immersed in water, inadequate sealing can compromise the entire structure. This is why it is essential to rely on specific products designed to respond to real environmental conditions.

Giuntoflex is a single-component, moisture-curing, polyurethane-based elastic sealant. Its high adhesion to building materials, combined with its remarkable elasticity and resistance to atmospheric agents, makes it ideal for sealing:

• Contraction and expansion joints in industrial flooring.
• Metal carpentry and prefabricated structures.
• Ventilated facades and metal flashings.

Furthermore, Giuntoflex can be repainted, offering a solution that can be aesthetically integrated into the structure. It is designed for environments not exposed to continuous water, where elasticity and durability are required. Available in 600 ml bags, packed in boxes of 20 pieces.

For more complex applications, where the constant presence of water puts a strain on the joints, Proind offers Expander K1, a polyurethane-based hydro-expansive sealant.
Its operation is as simple as it is effective: on contact with water, Expander K1 increases in volume, sealing any micro-cracks and compensating for any irregularities in the substrate.

It is particularly suitable for:

• Construction joints in precast or cast-in-place concrete.
• Connections between existing and new structures.
• Infiltrations in technical rooms, tanks or plumbing systems.
• Seals around reinforcement bars or system passages.

Its effectiveness in extreme conditions makes it an irreplaceable ally in ensuring long-lasting waterproofing, even in the presence of hydrostatic pressure.

In the field of waterproofing, there is no such thing as a ‘universal’ solution. Every construction site presents specific challenges, and only highly specialised products can guarantee long-lasting results. Giuntoflex and Expander K1 are two different but complementary solutions, born from Proind’s experience and research.