Antique Fireplaces Old Victorian Fireplaces Reclaimed Antique Cast Iron Fireplaces

Antique Fireplace Old Victorian Fireplaces Reclaimed Cast Iron Fireplaces

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fireplace fitting
   

 

Fitting instructions

These instructions are as a guide only or for competent DIYers, we recommend you employ a competent fitter

 

Fireplace Fitting


Fitting the tiles in your fireplace
Before starting the job the first thing I like to do, if the fireplace has tiles is to fit the tiles early so they can set. Begin by standing the fireplace upright and jamming the tiles in with wedges of wood, clothes pegs are very handy for this. Then very gently lay the fireplace down and plaster in with a very thick bonding plaster, spread carefully so as not to disrupt the tiles; you can keep your hand on the front of each tiles in turn to hold it steady and check for movement. The purpose of plastering the tiles in is not just to secure the tiles but also to block any gaps around the tiles, tiles trays and racks to prevent smoke and gas leaking through. Leave the fireplace for a couple of hours to allow the plaster to set; you can even plaster them in the day before. A word of caution though; after a few hours lift the fireplace up and check that the tiles are straight, if they are not push them into position, the plaster may be firm but not set - Pictures  6 & 7

Knocking out the existing fire back
Before fitting your fireplace you must first remove any existing fireplace or back - Picture 1


BE WARNED THIS IS VERY DUSTY. If possible the room should be emptied as the dust gets everywhere, good ventilation is highly recommended.
At first glance the opening may look small and original but it is usually hiding a much larger opening. It is often tempting to leave in the existing fireback but you are only putting off the inevitable, it’s often faster to knock it all out and then brick up - Pictures 2 & 3


Picture 4, this shows the original arched opening indicating that the original fireplace was quite large, this particular opening is 42” high but because the tile carriers on the
fireplace we are fitting are also 42” plus 2” for the hearth, we will need to adjust the opening. We could chisel away at the arch but we were concerned that the vibration may loosen the stack so we have chosen to gently remove the arch and fit a steel reinforced concrete lintel (Picture 5). These are the same depth as a common brick and the length can be easily cut to size with an angle grinder. Once in place brick up where necessary getting plenty of mortar between the gaps. Don’t worry about being to neat, nobody will see it!

Laying the hearth
Pictures 9 & 10
The hearth we are laying is slabbed matt granite which is made up in one piece and makes life a lot easier, it is essential that this is laid level, if it isn’t your fireplace will look wonky.
I like to have a slight gradient running back into the fire so that anything falling out of the fire will hopefully roll back. This hearth has a separate lip because of the shape of the tiles but it isn’t necessary with all fireplaces. Once the hearth is fitted fill and
level the back of the fire opening with a good concrete mix. This is going to have hot ash falling onto it and will also carry the weight of the fireback.

Fitting the fire back
This fireplace has a separate fire back but if you are fitting a fireplace with the back attached you will still need to follow the instructions for bricking up but you will first have to chalk out roughly where the finished position of the back will be and then remove the fireplace to enable you to brick up behind. (Picture 20)
Place the fire back in position putting it roughly where you think it will be then offer the fireplace up, checking that the fireplace is central on the wall and hearth. When you are happy that everything is in the correct position pull the back forward gently until it touches the fireplace, then mark its position in the wet concrete. At this point you should also mark the position of the fixing lugs with a drill. You now need to fill in behind the fire back with bricks or blocks if there is a lot of space behind. (Pictures 12, 13 & 14)
It is important to leave a 2” gap between the bricks and the fireback to allow for any mistakes and to back fill with vermiculite; this can be purchased from most builder’s merchants. Continue bricking up to the top of the fireback, the bricks at the top need feathering back, these will be covered with vermiculite to form a slope (Picture 17)
which will enable the soot to fall down the chimney and into the grate, there shouldn’t a any ledge for it to gather on as a collection of soot can cause a chimney fire.
At this point you need to consider if your fireplace has a vent plate, this needs enough room to operate so you will need to keep the finished level below this.
You can now fit the fireplace (Picture 15) using rawl plugs and screws at least 2” long.
The fireplace should be fitted onto the wall free of plaster. It is then important to
plaster in to form an air seal. In our case the plaster is well clear of the fireplace and will be replastered later.
Some fireplaces have nibs on the legs, which you can accommodate by drilling holes in the hearth, alternatively you can remove them.
Once you have fastened the fireplace to the wall you can now fill the gap between the fireback and the bricks with a vermiculite mix; five parts vermiculite to one part cement, add water to form a semi-dry mix. (Picture 18) I usually do this filling in by hand.
Once in position and set the vermiculite will help hold everything together, it will also keep the heat in where you want it and also help protect your fireback.
The fireback should now be touching the fireplace front, which is fine, it is not necessary for the two to form an airtight seal, the fireback gets very hot and expands so a slight gap is desirable. There should never be a gap at the rear of the fireback as it can cause turbulence and make for a poor fire, it will also collect soot, which can be dangerous and smells nasty.
All that’s left now is to clean everything paying particular attention to any cement or plaster that may be on the fireplace. All done (Picture 19)

Fitting a tiled insert and surround
The above instructions are for combination fireplaces; if you are fitting an insert and separate surround the instructions are the same with regards to bricking up and filling in behind the fireplace.
The difference is that your insert will not be fitted flush to the wall but will be set off the wall; the gap depends on the rebate of your fireplace, most commonly 1”.
You will need to create a seal around the edge of the insert; to achieve this once you have the insert fixed at the correct distance from the wall you can use wire or plasterers edging to push down the gap all around the edge and then fill on top with bonding plaster. The wire is just to hold the plaster until it sets. You can then screw your surround to the wall.

Good Luck!!

 

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The Antique Fireplace Company

The Barn at Jasmine Cottage, Prees Green, Nr Whitchurch, Shropshire, SY13 2BL, UK.
 

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Antique Fireplace Old Victorian Fireplaces Reclaimed Cast Iron Fireplaces

 

The Antique Fireplace Company website was last updated 22nd Jul 2014

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