Repairing a crumbling brick arch

[Carbonel64]

I am currently repairing the façade on our house in northern France. It
is brick on the ground floor, and the upper floors were once wattle &
daub, but are now in cladding. The bricks date back to the mid to late
18th century, and are becoming very brittle, but are a nice orange
color, and we would like to (in fact have to according to the deeds)
preserve them as much as possible. There are two front entrances to the
house, one standard rectangular one, and a wider but lower arched one
(see attached photo). Various owners had filled in the cracks with
various types and colors of mortar/[Only registered and activated users can see links. ]/reinforced [Only registered and activated users can see links. ] (yes,
really!) which was very ugly. I have just removed all this. As you can
see in the photo, there are a number of bricks missing; my idea was to
replace these with the bricks that are currently surrounding the two
entrances, and use new bricks in a similar color to the others to
replace them. How difficult is it to do this? As far as the arch is
concerned, how is the lintel supported while the bricks are being
replaced? Any advice/opinions/suggestions would be gratefully received.


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Carbonel64

[harryagain]

"Carbonel64" <Carbonel64.a5b4ec8@diybanter.com> wrote in message
news:Carbonel64.a5b4ec8@diybanter.com...

That brick work is all in a bad way. It looks like the bricks are poors
quality and have been subjected to frost damage.
The main issue will be the conservation attitude of government in France,
can't help you there.
In the UK they would go to desperate (stupid) extremes to try to preserve
stuff like this.

I would say that [Only registered and activated users can see links. ] is verging on the dangerous and could fall on
someone.
But that might solve any preservation problems you might have with local
government, you could the replace it with modern frost resistant bricks.

Could even be given a little help to fall down if you get my meaning?

if you could get hold of similar old bricks, they could be replaced piece by
piece but it would be very expensive and take a long time. Probably lime
[Only registered and activated users can see links. ], not hydraulic.

There is no lintel, arches are selfsupporting. A "needle" would have to be
put through the wall to support it while the arch was being fixed.
(Temporary joist supported at both sides.)

Arches are constucted on a timber formwork (more expense)