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Before getting started with the stove it’s important to check a few things: the supporting floor needs to be strong enough for the 530 kg stove, the chimney should be okay, and volume and insulation of the space to be heated should be in such a way the Roquetinho can do the job.

It is mainly a radiant heater and for that it should ideally be placed in the middle of the room. Often, however, placement against a wall will be chosen. In that case, it can be a great advantage if it concerns an interior wall that thus gets an accumulating function: both for the space to be heated and for the space

next to it.

When placed against a wall, the distance to that wall must be at least 22 cm.

And furthermore: a separate air supply is not necessary, but the ventilation of the room must be sufficient.

    Foundation

A wooden floor does not have the strength needed to support the Roquetinho. A foundation is then a necessity. Most obvious is from the bottom under the floor. Sometimes it is possible to insert steel beams into the wall. This must be done by a professional!

    Chimney

The flue must be at least 4 meters high, calculated from the outlet of the stove. Inside the room a singular inox tube of Ø 120 mm will do. Up from 30 cm below the ceiling it then changes into a double-walled flue pipe. The regulations for wood-burning stoves also apply to the Roquetinho: such as having the top of the flue above of the roof.

Tools

    Vibration table

To cast forms out of refractory concrete, you need a (simple) vibration table. As soon as the concrete mixture goes into the mould, it must be vibrated to compact the material and force the air bubbles out.

   to grind / saw blocks and concrete:

• grinder

• diamond circular saw

• half or full face mask

• safety glasses

• clamps

• workmate

• ruler, tape measure, pencil

   to make moulds:

• saw table

• saw

• drill
• tape measure

• screwdriver

• paint brush

• sandpaper

    List of materials

1. •aluminum cement (1 bag of 25 kg)
   

2. •chamotte granules (3 bags of 25 kg)
   

• refractory insulation bricks 230x114x64 mm, e.g. ThermAll type-26

• firebricks 220x110x30 mm for the firebox

• firebricks 220x110x60 mm for the firebox

• refractory glue (for example Moviset)

• cement glue (tile glue)

• concrete tiles 60x40x5 cm

• portland cement

• builders sand, fine gravel

• clay powder and fine sand to make cob

• ceramic insulation blanket 200 x 61 x 1.2 cm, for example Superwool

1. •refractory glass 220 x 175 x 4 mm
   

2. •fireproof glasstape 5 x 2 mm
   

3. •fire cord 10 mm and 5 mm
   

• 1 m. square steel tube for floorchannel (30 x 30 x 2 mm)

• 3 m. steel L-profile (40 x 40 x 4 mm) for door and frame

• 3 m. steel L-profile (25 x 25 x 3 mm) for the top of the bell

• 1.5 m. steel U-profile (10 x 10 x 1,5 mm) for the door

• steel plate (550 x 550 x 6 mm) for the top of the bell

• steel plate ± 180 x 170 x 4 mm for door and floorchannel

• steel plate ± 33 x 170 x 6 mm for lock

• some small pieces of steel plate of 1 and 2 mm

• laths, battens, beams, sheet of plywood for transport, etc.

Here you see a simple vibration table that you can put on a Workmate. A thick plywood board of 40x60 cm is attached to two 40 cm beams by four springs that you fasten with nuts and bolts. A 60 cm beam, attached to the two 40 cm beams, is clamped into the workmate. To stabilize the workmate you place 2 concrete tiles on it. On the side of the plywood plate you fix a thick metal plate, against which you hold the hammerdrill to vibrate. Fasten the mould to the top board with clamps. Make sure it is level.

Vibration is much easier when using a vibration motor. The firecrete mixture only has a short open time, so it saves a lot of stress if you don't have to shake it by hand. A simple 50 watt vibration motor is sufficient for this purpose. You screw it to the bottom of the vibrating plate, see the picture. Also see this YouTube video.

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