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1 Sided Beam Protection 600 mm to 1200 mm Deep. Board to framed casing fix - ST P250-033S

Verified by manufacturer 9 days ago

Promat UK Third party certifications:
  • UL-EU Certified

    UL-EU Certified

    Certificate type

Encasement system using non-combustible mineral bound light weight boards. One-sided beam protection 600–1200 mm deep; board to framed casing fix.

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Application

Steelwork protection.

Description

PROMAT PROMATECT®-250 is a non-combustible mineral bound light weight board and provides a high degree of strength and dimensional stability and fire protection to structural steel and is suitable for areas where the relative humidity is up to 85%.


It is classified A1 non-combustible according to BS EN 13501-1. 


Features and benefits:

  • One-sided beam protection 600–1200 mm deep.
  • Board to framed casing fix.
  • PROMATECT®-250 comprises autoclaved calcium silicate spheres (PROMAXON® is a synthetic hydrated calcium silicate in spherical form) bound in a mineral matrix.
  • Off-white in colour.
  • One face is smooth and ready to form a finished surface, able to receive almost any form of architectural/finish treatment.
  • The reverse face is sanded.

General information

Color

White

Finish

Smooth

Guidance for specification option:

One face, ready to form a finished surface.

Sanded

Guidance for specification option:

Reverse face.

Material

Calcium silicate

Guidance for specification option:

Autoclaved calcium silicate spheres bound in a mineral matrix.

Shape

Rectangle

Length

Bespoke

Width

Bespoke

Height

Bespoke

Warranty description

-

Manufacturer guidance

Etex Building Performance Limited warrants that our passive fire protection products and component parts, when installed in the building originally designed, built and unaltered in accordance with the conditions and procedures as detailed in UL-EU Certificate No. UL-EU-01220-CPR, this specification document and associated CAD drawings; and any specific technical recommendations made in relation to the above project, shall be durable and free from defects due to faulty manufacturing or factory workmanship.


The system must be installed by a 3rd party accredited fire protection contractor, and where included in the specification, solely with proprietary products and components as supplied by Etex Building Performance Limited.


The scope of this warranty will be dependent on the application and the environment in which the products are being installed.

Uniclass

Ss_25_25_45_68 Rigid sheet casing systemsPrimary

CAWS

K11/54 Fire protection board

K11/885 Fire protection board

Specification data - Rigid sheet casing systems

Support

30 x 52 x 30 x 0.5 mm steel U-track and 36 x 50 x 34 x 0.5 mm steel C-studs.
Fixings: 3.7 x 16 mm shot-fire nails or M4.2 x 12 mm wafer head screws.

Guidance for specification option:

Casings are installed using a metal frame consisting of U-track channels fixed to the underside of the top flange and the upper side of the bottom flange of the steel beam. Vertical steel channels are fitted into the horizontal channels at 1250 mm maximum centres.


Fixings: maximum 300 mm centres.

Manufacturer guidance

For beam widths over 325 mm, use minimum 25 x 25 x 1.2 mm Z-sections at maximum 610 mm centres perpendicular to the wall to support soffit boards, fixed with 3.7 x 16 mm shot-fire nails or M4 x 9.5 mm pan head screws at maximum 300 mm centres.

Insulation

Low density (10–30 kg/m³) glass mineral wool.

Guidance for specification option:

If required for acoustic or thermal performance.

Not required.

Linings

Inner and outer layers: PROMATECT®-250 board thickness determined by section factor (A/V), fire resistance period and limiting steel temperature.
Maximum board length 1250 mm.

Guidance for specification option:

Minimum PROMAT PROMATECT®-250 thickness for compartmentation on both sides of steel (when one-sided fixing detail is applied to both sides of the steel): 60 minutes: 15 mm; 90 minutes: 20 mm; 120 minutes: 25 mm.

Where protection to the structural steel and compartmentation are required, thicker of the two boards should be used.

Manufacturer guidance

  • For double layer encasements joints between layers must be staggered by minimum 530 mm, no cover strips are required to inner layer.
  • Boards can be left untreated or painted; where decorative finish is required, see Colour/ finish below.
  • Board thicknesses over 25 mm are installed as a double layer, board joints between layers staggered by 530 mm minimum.
  • Where more than one layer of board is used in a casing, the thicker layer should be applied first.

Fasteners

Fixing to metal track and stud: M3.5 CSK Self Tapping Screws.
Fixing to coverstrips: Chisel point staples minimum 35 x 12 x 1.6 mm (50 x 12 x 1.6 mm for board thicknesses over 15 mm).

Guidance for specification option:

  • Fixing to metal track and stud: Maximum 200 mm centres. Screw length to provide minimum penetration of 10 mm through the framed casing - track and stud.
  • Fixing to coverstrips: Maximum 150 mm centres. End staples are located nominally 40 mm from the corner of the board.

System accessories

FSi Promat Pyrocoustic® Fire Resistant Sealant.

Fire resistance

Guidance for specification option:

Fire resistance (minutes) to EN 13501-2. Insert requirements.

Colour/ Finish

Guidance for specification option:

Insert requirements.

Manufacturer guidance

Decorative finishes should be applied in accordance with Promat Technical Data Sheet TDS 056 (https://www.promat.com/en-gb/construction/documentation/).

Section factor

Maximum 350 m-1.

Steel sections

600–1200 mm deep and 325 mm maximum width.

Strips

Coverstrips: Thickest encasement board layer x 100 mm wide PROMAT PROMATECT®-250 coverstrips fitted behind board joints and at the start and end of the beam.

Guidance for specification option:

Coverstrips are not required to the top or bottom flanges of beam encasements.

Coverstrips are not required for double layer encasements.

Third-party certification

As detailed in UL-EU Certificate No. UL-EU-01220a-CPR.

Guidance for specification option:

Note: Depending on site conditions, alternative fixing methods may be required for beams and columns, one- or two-sided exposure or interface with other building elements. These fixing methods are outside the scope of current EN test methods.

These recommendations are based on the principles of EN 13381-4 and given in good faith. They should be approved by the responsible designer or through independent third party assessment.

Installation

Encasement boards must overlap the structure either side of the steel by a minimum of 75 mm.

Sustainability data

Country of material origin

Belgium

Country of product manufacture

Belgium

Manufacturer guidance

Applies to the bulk board material only. Other components are from other countries. Consult manufacturer for details.

Material

Calcium silicate

Guidance for specification option:

Autoclaved calcium silicate spheres bound in a mineral matrix.

Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

-

Recyclability

Gypsum, calcium silicate and metal components can be recycled depending on the segregation of all materials.

Third party certifications

UL-EU Certified

UL-EU Certified

UL-EU-01220 Promatect-250 Steel Protection

Literature

Promat Passive Fire Protection for Structural Steel

Promat Passive Fire Protection for Structural Steel

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