Description

Firesteel 47/4 and 47/4EXT are water based intumescent coatings for structural steel, supplied in a thick paste which can be applied by brush, roller or spray to provide up to one hour fire protection to most structural steel sizes.

For internal applications, Firesteel 47/4 can be applied without the need for a top seal in most applications. Firesteel 47/4EXT is a more durable coating that, with a suitable top seal, protects steels subjected to external weather elements.

In the event of a fire the intumescent coating expands to insulate the structural steel from the fire.

Benefits

Availability

Application

Like all fire protection work to structural steel, the amount of product required - the loading - varies depending on the Hp/A value of the steel members. Briefly the Hp/A value is an expression of its ability to absorb heat. The larger its surface area as a ratio of its mass, the quicker heat will be absorbed and the greater the Hp/A value.

We will be pleased to calculate your loading requirements [details on application]

Primers

Firesteel is applied to clean, dry primed steels. Primer compatibility tests have been undertaken on single and two pack products commonly available. Please contact us for confirmation of compatibility.

Top Seals

For internal steels, Firesteel 47/4 does not require over-coating, however where a colour finish has been specified the use of a proprietary water based gloss or emulsion paint can be used. For external steels, Firesteel 47/4EXT requires a special top seal which protects the steel from exposed weather conditions; we can supply a top seal in a range of colours.

Certification

Acknowledging the importance of fire protection, if requested we can arrange for certification to be issued for each project. This confirms the quantity of product supplied, the square metreage to be treated and confirms the level of fire protection specified. The applicator will also sign the document to confirm he has applied the material in accordance with the manufacturers’ specification.

Pyro-Seal is a registered trademark of Wessex Intumescent Supplies Ltd.
WIS Multiseal-It and WIS Draught Stoppers are trademarks of Wessex Intumescent Supplies Ltd.
All other trademarks are acknowledged.

All goods sold or offered are subject to our terms and conditions of sale - copies available on request