Fire Rated Penetration Sealing | Fire Stopping Systems | Firestop Pillows
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Fire Rated Penetration Sealing

Fire rated penetration sealing – Mechanical, Electrical and Structural components.

What is penetration sealing?

Mechanical, electrical and structural components often need to pass through Fire Rated walls and floors. They’re installed in carefully planned, strategically positioned openings which, nevertheless, breach the structure’s fire integrity. This is obviously a fire risk, and you need to take steps to mitigate the risk. Which is where penetration seals come in.

About penetration seals fire protection

Fire resisting compartments work to prevent fire and smoke spreading within a building. But most hidden cavities are, by nature, interlinked. Most of the gaps are used for services, many through walls and floors. Some are left to allow the structure to flex a little, but others are simply down to poor construction.

Because every service passing through fire resistant building elements react in different ways to fire, there’s no one-stop single solution – it depends entirely on the building in question. Which is why you need professional support from fire penetration installation experts.


The general design criteria tend to be:


Insulation requirements.

Thermal expansion.

Whether the gap is vertical or horizontal.

Whether it’s a wall, floor or linear gap.

The mechanical strength.

The required fire resistance time.




Are you located in London, Essex or Kent? Get in touch for a discussion about your penetration sealing installation. As an expert fire penetration contractor, We will be pleased to help and advise.

Our penetration sealing solutions- London, Essex and Kent.

Penetration Sealing is the term that describes a wide variety of fire stopping systems, all of which have been approved to close the gap in a premises’ fire integrity and restore safety.

In some cases technological openings are future-proofed, so any new services added throughout the life of the building can be accounted for up front, throughout the building’s lifespan. The voids left for future use are treated and sealed using materials like intumescents, cementitious mortars, silicone, firestop pillows, mineral fibres and other fire preventing compounds.

FREE installation on penetration seals we propose and approve

We use professional, properly-qualified experts through the entire construction and installation process, a practice that’s essential if you want to avoid expensive mistakes. They must be installed in accordance with British Standard BS476 and compliant with Approved Document B regulations, too, which we ensure. If you also ask us to propose and approve your fire prevention sealing solution, we will install it for free.

Does your home or commercial premises need passive protection?