DFPT / Room Integrity Testing

Room Integrity Testing, also known as Door Fan Pressure Testing (DFPT), is a critical component of ensuring the effectiveness of gaseous fire suppression systems.

These systems rely on the ability of an enclosure to retain the extinguishing agent for a specified period — typically a minimum of 10 minutes — to prevent re-ignition and allow sufficient time for emergency response.

We conduct Room Integrity Tests to compute the predicted extinguishant retention time and verify that the protected enclosure meets the required sealing standards. All testing is carried out in full accordance with the general requirements of the following international and national standards:

Our testing process includes:

By aligning with the above standards, our integrity testing ensures that your suppression system will perform as designed during a fire event. The data provided supports both initial commissioning and ongoing compliance, forming a key part of a robust fire protection strategy.

Maintenance & Compliance

Maintaining your fire alarm system is just as critical as the initial installation. Regular maintenance not only ensures ongoing functionality but also keeps you compliant with your legal obligations. Our maintenance services include:

As a BAFE Approved Company (Scheme SP203-1), MSL Fire is certified for the maintenance of fire detection and alarm systems. Our work is carried out to the highest standards, supported by a fully auditable service history.

Why Choose MSL Fire?

From initial consultation to ongoing support, MSL Fire ensures that your fire alarm system offers maximum protection for your people, property, and operations.

MSL Services:

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MSL Fire operate across London & the home counties

Call us on 0208 669 6630 or click here for more contact details