NOFIRNO Applications

NOFIRNO - Solo board

The main advantage of the NOFIRNO boards is that they offer a very economic solution for the sealing of larger open spaces in conduit openings.

Fire tests have shown that application of the superb NOFIRNO coating on the boards offers a high degree of thermal insulation. Double sided coated single boards easily pass the F-60/ 1 hour rating. The single side coated, 2 layer boards obtain the F-120/ 2 hour fire ratings. In order to pass thermal insulation with the cables as well, NOFIRNO rubber sleeves can be applied around the cables.

In case of fire the NOFIRNO coating will form a ceramic protective shield at the exposed side. This shield is also a thermal barrier. Furthermore it prevents moisture from escaping from the inside of the mineral wool board so that no shrinkage will occur during fire exposure. NOFIRNO has been successfully tested during a 90 min fire test according to the European standard EN 1366-3:2004

Two types of NOFIRNO coatings are available: one for indoor applications, which is very attractive price-wise, and one for outdoor applications. For mechanical stability it is of the utmost importance that the boards fit snugly in the conduit opening and that the boards are sealed all around with NOFIRNO sealant.

More information on the NOFIRNO solo board system can be found under installation instructions

NOFIRNO – ACTIFOAM

For oversized penetrations the NOFIRNO mineral wool boards are used to fill the remaining open space in the most economic way. For the fire rated filling around the cables preferably ACTIFOAM sheets are used. To obtain the degree of tightness required, the foam filling should be compressed. To achieve sufficient compression a fire proof compression (12mm thick fibre cement) plate is placed between the ACTIFOAM filing and the NOFIRNO mineral wool board(s).

In this way also the mechanical stability of the fire safe penetration is improved. In cases of limited wall thickness NOFIRNO® rubber insert sleeves are applied around each of the cables to obtain the required thermal insulation.

The advantage of the NOFIRNO - ACTIFOAM sealing system is to allow for a spare space in the conduit opening which is then sealed in a very easy and economic way. ACTIFOAM allows, if required, the tray to be passed through the conduit opening. Furthermore it is not necessary to coat the cables and/or cable tray because of the outstanding thermal insulation properties of ACTIFOAM, which therefore minimizes maintenance costs.

If a gas tight seal is required, apply a 20mm thick layer of FIWA or NOFIRNO Sealant.

NOFIRNO – RISE

In the case of highly filled cable penetrations, it may be easier to separate the cables with RISE insert sleeves rather than ACTIFOAM profiles. The sleeves are split lengthwise and can be fitted easily around the cables.

The biggest advantage of the NOFIRNO boards is that they offer a very economic solution for the sealing of larger open spaces in conduit openings. Fire tests have shown that application of the superb NOFIRNO coating on the boards offers a high degree of thermal insulation.
In order to pass thermal insulation with the cables as well, NOFIRNO rubber sleeves can be applied around the cables.