Notes & Updates - The Fire Brick D130 Instruction Booklet

Updates
Notes & Updates
We are on a continuous search for ways to improve our products, so that we're always giving our customers
the very best product that we can. These changes are always small and incremental - tested by us before being
rolled out to our customers. This is where we will make notes of these changes, where things have evolved
since the instructional videos were recorded.
1. The Refractory Mortar used to lay all of the bricks in the dome of the oven is now a two-part mix (in the
videos it was shown as a one part dry mix). This is to increase the shelf-life of the mortar, by keeping the
active ingredient separate in another bag. Close the tops of these bags after opening to help them keep.
2. The new Refractory Mortar mix used to lay the dome bricks sets far more quickly than its predecessor.
In the video series we suggest waiting until the following day to remove excess mortar from the inside
of the oven dome. We now recommend that you remove excess mortar as soon as possible, as it
will set very hard after 24 hours, particularly if you are building in a warm climate. This is especially
important when you are laying the final courses of dome bricks on top of the fibreglass dome
formwork. If you are laying these final courses over several days, it will be wise to lower the dome
formwork after you lay each course in order to remove excess mortar and clean your brickwork.
3. The D130 PreCut Brick Oven Kit is a Commercial Spec Wood Fired Brick Oven. As such it has more of
almost everything; 100mm of Calcium Silicate Subfloor Insulation Board, 100mm of fire brick as thermal
mass for the Oven Floor and 75mm of Ceramic Fibre Blanket to insulate the brick dome.
We achieve the 100mm of fire brick in the oven floor by replacing the 25mm 'Subfloor Castable' layer
seen in the videos with a 50mm fire brick tile. This means the process is slightly different to what you'll
see in the videos, but that is covered in detail in these instructions.
4. As the D130 PreCut Brick Oven is typically used in commercial applications, we recommend that you
use Refractory Castable for any large openings in the brickwork, rather than using the Refractory Mortar.
For example, after laying course 6 you'll find there are some large triangular gaps that need to be filled
where Course 7 crosses the Entry Arch. In the instructional video series we fill these gaps with Refractory
Mortar, for the D130 Brick Oven you need to use the Refractory Castable to fill these gaps.
Similarly for the ends of the brick courses - in the video series we used the Refractory Mortar to fill in the
'keystones' at either end of each course of dome bricks. For the D130 these gaps need to be filled either
using fire bricks that have been cut/ground to size, or the Refractory Castable mixture.
This is because the D130 is likely to be pushed to much higher temperatures, much more often, than the
other ovens in our range.
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