The Fire Brick D95, Instruction Booklet

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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 D95 PreCut Brick Oven is very similar to its bigger brother - the D105, with one key difference. To
balance the thermal mass of the smaller oven dome with the thermal mass in the oven floor, we have
removed the 25mm Subfloor Castable layer, so your 50mm fire brick tiles will be mortared down directly
onto the aluminium foil layer that you cover the CalSil board with. This reduces the heat-up time of the
D95, while still giving you more than enough thermal mass in the floor to hold very stable temperatures.
4. If you plan to use your oven at extreme temperatures on a regular basis (in excess of 700°C), or are using
it for commercial purposes, then we recommend using the Refractory Castable to fill in large gaps on the
inside face of the oven. For example, when the dome courses start crossing the Entry Arch there are some
triangular sections that need to be filled in. If you’re using the oven normally, at temperatures below 700°C
then the Refractory Mortar will work perfectly. If you’re going to be using the oven commercially, or running
at extreme temperatures, then replace those sections of Refractory Mortar with Refractory Castable.
Updates