External rendering 1928 property - repair & additional w

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Hampshire
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United Kingdom
If anyone has any opinions / advise on the following I would be very grateful:

Back Ground....
Property (semi detatched) had pebble dash render painter white with back timber at various positions at the front of property as decoration, in keeping with neighbouring properties (also has bricks exposed on the corner of property that give the appearence of columns). The side of property as had some rebuilding work within last 20 years so the side has noticeable London brick instead of the original victorian bricks.

Rear of the property had what can only be described as a bomb shelter attached (1 foot + of concrete etc along 2/3rd of rear and a rear toilet. As all has been removed and new the bricks and mortar below the line of existing render have been exposed to show signs of damage and weak crumbling lime mortar joints.

Damp Course : Slate with original bricks and modern DPC on new bricks.

Questions ...

1. Any views on smooth render on the bottom half of property (side and back only), as it has rough on the top half? (painted white of course) This would hide the new bricks and also repair the rear damage and water proof the old bricks/ mortar at the rear. Keep the front as original as great feature (bricks have been repointed)

2. If done what should be done when reaching the DC - plasterer thinks Stop end above it then stop end below it (sandwiching it basically), then fill with a waterproof sealant (white)

3. I have read that something other than PVA should be used on the old porous bricks compared to the newer London bricks? any views?

Sorry long winded, but if you are able to offer advise, many thanks.
 
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2. If done what should be done when reaching the DC
.
either use a bellcast bead, or if you want to render down to the bottom without comprimising the dpc i was taught to render down to the ground and the with the edge of the trowel cut a line in the render
so as the dpc still does its job, so in effect you will have a thin line cut in the render at the dpc
 

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