Promat VERMICULUX®-S - Encasements - ST VLUX-209S

Guidance for specification option:

Framing components:

• Galvanized metal angle fixed to both sides of upper flanges of the beam, either:
  • 25 x 50 x 0.7 mm with 3 mm offset
  • 23 x 30 x 0.7 mm with 5 mm offset if steel size does not allow for larger angle.

Framing components fixing:

• 3.7 x 16 mm (minimum) shot-fire nails at maximum 300 mm centres.

Guidance for specification option:

Board to frame:

• Self tapping drywall screws at maximum 300 mm centres, length determined by board thickness, minimum 10 mm screw penetration into angle.

Board to board:

• High thread drywall screws at maximum 200 mm centres, length determined by board thickness, minimum 30 mm screw penetration into board.

Guidance for specification option:

Promat VERMICULUX®-S can be left exposed for up to 6 months during the construction phase, subject to the following qualifications: the boards must not be left in standing or pooling water or be subjected to any water run-off from roof or slab structures above (protection can be provided by temporary waterproofing measures) and all cut edges should be sealed using FSi Promat Pyrolastic® Silicone, a fire resistant silicone, prior to installation to help prevent any long-term moisture ingress. This is particularly important when considering structural protection to perimeter/edge beams.

Guidance for specification option:

Decorative finishes should be applied in accordance with Promat TDS 056 (https://www.promat.com/en-gb/construction/documentation/) and Appendix Section 7 of the Promat Passive Fire Protection Handbook (https://www.promat.com/en-gb/construction/tools-services/fire-protection-handbook/).

Guidance for specification option:

Boards can be left untreated or painted.

Guidance for specification option:

All boards abutting surrounding structure may be sealed using FSi Promat Pyrocoustic® Fire Resistant Sealant - not required for fire resistance.