- APPLICATION INSTRUCTIONS
- ORDER REFERENCES
This product is a dry mix to which water is added and then mixed like to the consistency of sand and fire cement. When set, the mortar is load-bearing and can be strong enough to take the weight of pedestrians and mechanical traffic. It can be drilled with woods bits and easily cut to allow the installation of services. There is a standard two-bag mix of 25 kg (FM25) and a three-bag mix (FM05/A) comprising 25 kg FM25 and 6.25 kg light weight aggregate. The latter option offers greater volume, i.e. will fill a larger area. Add approximately 41/4 – 214 litres of water per bag to mix. Good for fire stopping around building services that pass through floors. A pink coloured version is also available for easy identification as fire mortar. Wedge Rockwool Slabs into the opening, leaving the required depth for the mortar, according to the loading required. It is essential to fit intumescent wraps around PVC pipes, cables or steel pipes, in conjunction with fire mortar. For areas over 600mm x 900mm. it is advised to reinforce with 30mm wire mesh, fixed with FB/C straps. See data sheet for details.
- Great for fire-stopping around building services that pass through floors
- Can be used on fire rated timber, plasterboard, concrete walls and brick, block or concrete floors
- Acts as permanent shuttering around services, filling apertures in walls and floors
- The following fire ratings can be achieved with the corresponding thickness:
- Up to 6-hour protection: 100mm
- 4-hour protection: 25mm
- 3-hour protection: 12mm
- 2-hour protection: 6mm
- 1-hour protection: 3mm
- IMPORTANT – This product is for use with intumescent slabs (Products 4 or 5) and must not be used by itself
FIRE TEST PERFORMANCE
Tested to BS476 Part 22 (1987) at 25mm thickness. There was no loss of integrity to the slab itself and 240 minutes insulation was achieved.
For the 25 kg bag, add 4 ¼ to 4 ¾ litres of water, and mix like plaster. For floors, pour into the floor opening. For walls, apply over a Rockwool Slab with a trowel or float. 25 kg bag will fill approx. 8600 cm³ or 2 bags will fill 0.83 m² to depth of 25 mm.
Application into floor: For openings 600 mm x 900 mm, no wire mesh is required. Just fit Rockwool slab, fit Envirograf Protection around any services and fill over the Rockwool to the required depth, with the FM Fire Mortar. For larger openings, fit 50 mm RW4 or RW6 Slab where large areas over 1 metre wide, use Envirograf® Ref: SUP Support Bars (As Picture) under Rockwool. Fit 30 mm wire mesh over the Rockwool, cutting around services and wiring to the services. Fix wire mesh all around the perimeter of the hole, bend up the wall or floor and fit with Envirograf® FB/C Metal Battens to support the mesh.
Fit Envirograf® Fire Protection Wraps around pipes and electrical services, Intumescent Pads inside and Trunking Pillows for Cable Trays. Product 40 Fire Proof Sponge around ventilation trunking. Then mix FM Fire Mortar and pour into the opening to the required depth.
Please use the links below to download relevant information as PDF documents:
REGULAR GREY-COLOURED PRODUCT
|FM25||25 kg regular fire mortar GREY-coloured|
|FM05/A||25 kg plus 6.25 kg aggregate additive = 31.25 kg total dry mix GREY-coloured|
NEW PINK-COLOURED PRODUCT FOR EASY IDENTIFICATION AS FIRE MORTAR
|FM25/P||25 kg PINK-coloured fire mortar|
|FM25/AP||25 kg plus 6.25 kg aggregate additive = 31.25 kg total dry mix PINK-coloured|
|SUP||Metal Support Batten for large floor openings (see illustration top of page), price per metre|
|MESH||30mm wire mesh x 1200mm width, sold per linear metre run|