




Ace Mortar Seal is a ready-to-use, one-component, self-curing cementitious fire stop mortar compound. It is intended for use as a mortar compound in passive fire protection systems. It is mixed with water at site and is used as a mortar compound for obtaining a workable mix, which is easily applied at the site of the fire stop installation. After application, it dries up and forms an in-situ cast fire stop or fire barrier. Therefore, if it is applied according to the suggested method of application, it is effective in preventing the spreading of fire, smoke, and toxic gases during a fire. It is used for sealing both horizontal openings, i.e., floor penetrations and spaces under control and electrical panels, as well as vertical openings in the wall for compartmentation, thereby providing a fire resistance up to 4 hours. It is a certified fire stop mortar and meets the requirements of NBC 2016 and BS 476 for fire-rated compartmentation.
Fire rated walls and floors have been put into place for the purposes of containing fire, smoke, and hot gases; however, there may be openings where building services such as cables and conduits pass through that may make them ineffective. Fire stop mortar is one way to reinstate the compartmentation of fires with the presence of building services. In this paper, fire resistant Fire Stop Mortar will be discussed.
Openings created in fire-rated walls and floors for cables, cable trays, pipes, conduits and other building services can become potential pathways for the rapid spread of fire, smoke and hot gases. To maintain effective compartmentation, these openings must be protected using a reliable and tested firestop system.
Vijay Systems Engineers Private Limited (VSE) offers a high-performance Fire Stop Mortar, designed for sealing service penetrations and restoring the fire-resistance integrity of walls and floors. Our firestop mortar provides a robust solution for a wide range of commercial, industrial and critical infrastructure applications.
Manufactured with a focus on quality, performance and reliability, VSE’s Ace Mortar Seal is supported by extensive fire and performance testing, making it a dependable choice for projects requiring certified passive fire protection solutions.
VSE Fire Stop Mortar is designed for sealing openings and penetrations in fire-rated walls and floors. It can be used for a variety of applications, including:
Single component mortar-based system forms a strong and durable fire barrier around service penetrations, helping to restrict the spread of fire, smoke and hot gases between adjacent compartments.
Fire performance is a critical requirement for any passive fire protection system. VSE Fire Stop Mortar has been tested for up to 4 hours of fire resistance, providing a tested solution for critical penetration sealing applications.
Our Fire Stop Mortar is tested as per FM and ASTM E814 requirements, with FM 4990 certification for up to 4 hours fire resistance, as applicable to the tested system.
The product has also successfully undergone fire-resistance testing as per recognised standards, including:
The actual fire-resistance rating achieved depends on the tested system configuration, penetration type, opening size, substrate and installation conditions.
A firestop system must perform not only during fire exposure but also under conditions that may be encountered during the life of a building or industrial facility. VSE’s Fire Stop Mortar has successfully undergone a range of sequential and performance tests to evaluate its durability and suitability for demanding applications.
The system has successfully passed sequential testing that includes:
These tests demonstrate the system’s ability to withstand different environmental and physical conditions before being subjected to fire-resistance evaluation.
The successful completion of these sequential tests supports the reliability and durability of the VSE Fire Stop Mortar system for demanding applications.
For specialised and critical applications, VSE Fire Stop Mortar has also successfully passed the Gamma Irradiation Test as per IS 4031 (Part 6): 1988, reaffirmed in 2019 [RA 2019].
This additional testing reflects the suitability of the system for applications where resistance to specialised environmental conditions and performance reliability are important considerations.
Vijay Systems Engineers is committed to delivering passive fire protection systems supported by recognised testing and certification. Our Fire Stop Mortar is tested as per FM and ASTM E814 requirements, with FM 4990 certification for up to 4 hours fire resistance, based on the applicable tested system.
This provides project owners, consultants, contractors and engineers with confidence in selecting a firestop solution supported by recognised performance standards.
System selection should always be carried out based on the relevant test reports, certification requirements, project specifications and the specific site application.
VSE Fire Stop Mortar offers several advantages for fire compartmentation and penetration sealing applications:
Our Ace Mortar Seal is a single component system, hence retrofitting is very easy.
VSE Fire Stop Mortar can be used across a wide range of industries and infrastructure projects where effective fire compartmentation is essential.
Protection of critical cable and service penetrations in thermal, nuclear and other power generation facilities.
Sealing service openings in electrical rooms, shafts, plant rooms and other fire-rated compartments.
Protection of critical cable and service penetrations to help maintain compartmentation within mission-critical facilities.
A robust firestop solution for industrial service penetrations, subject to project specifications and tested system requirements.
Fire protection for electrical, mechanical and plumbing service openings passing through fire-rated barriers.
Suitable for complex and large-scale projects requiring reliable passive fire protection systems.
At Vijay Systems Engineers, we understand that effective fire protection depends on the complete system—not just the product. The type of opening, services passing through it, wall or floor construction and required fire rating must all be considered before selecting a firestop solution.
Our technical team can support consultants, contractors and project teams with:
When searching for Fire Stop Mortar at the best price, it is important to consider more than the initial material cost. A reliable firestop solution should offer tested performance, durability, technical support and suitability for the intended application.
VSE combines quality manufacturing with extensive testing and technical expertise to provide dependable passive fire protection solutions at competitive value.
With over 25 years of experience in passive fire protection, Vijay Systems Engineers is committed to providing reliable, tested and certified firestop solutions for critical applications.
Our Ace Mortar Seal Fire Stop Mortar is designed to deliver robust fire compartmentation and is supported by extensive fire, durability and specialised performance testing.
Choose Vijay Systems Engineers for high-performance Fire Stop Mortar—tested for up to 3 hours of fire resistance and engineered to protect critical openings when it matters most.
Vijay Systems Engineers
Passive Fire Protection | Fire Stop Mortar | Cable & Pipe Penetration Sealing | Fire Compartmentation
Made in India. Certified for the World.