22
Firestop Components
VENTILATED SUPPORT PLATE (GALVANISED WITH S/S BAND)
The support plate is used where the chimney passes through a
combustible floor, and the weight of the chimney has to be taken at
floor level. The support plate must be firmly fixed by using bolts or
screws. For load bearing Data refer to tables 1 and 2 on page 40.
1. Frame a four sided level square opening within the joists using timber stringers where
necessary to allow for the correct distance to combustibles from the outer wall of the
chimney. This distance must be a minimum of 50mm on Gas and Oil applications and 60mm
for solid fuel applications (see Fig. 3 below - distance x).
2. Lower the chimney section through the opening in the floor, and secure to the next section
of pipe.
3. Locate the two halves of the support plates around the chimney section, and secure to the
joists using screws or bolts.
4. Remove the screws which are fastened to the clamp band. Then fasten clamp band around
the chimney section and position on top of the plate. Tighten using the nuts and bolts
provided.
5. Using the holes in the clamp support ring drill 3mm holes in the outer casing of the chimney
section (drill bit should be set for a depth no greater than 10mm to avoid damage to the
liner).
6. Using the screws provided secure the clamp support ring to the outer casing of the chimney
section.
Note: Joints must NOT occur within the floor or ceiling joists.
Ventilated
Firestop Plate
Non-Ventilated
Bungalow Firestop
Fig. 3
Fig. 2
Fig. 4
