Concrete blocks or Red bricks good for Rear double extension

[newtodiy83]

Plaster is internal, on the outside its called render and it's sand and cement.

If the planning permission is to match the existing house externally, then that's what should be done. Planning is not concerned with the internal walls.

You can render over blocks or bricks, there is no real difference in performance. The only real difference is in cost. The cost of one block is that of two or three bricks, and there are six bricks to the area of one block. Blocks are quicker to lay too. So a wall built of blocks is cheaper than of bricks.

Ok, sounds like he tried to save some money by using blocks instead of bricks. except cost, will there be any difference in insulation when using blocks instead of bricks? and what about any problems in future in walls etc? Please advise. thank you.

 

[stuart45]

Using blocks for rendered work is normal.
The main issues with the brickwork is showing blocks at the bottom where it shows, the oversailing course and the one below could have been bonded better, and they could have run a couple of courses of brickwork on top of the oversailing course to save the cut below the lintel, and all the blocks internally to level up the 2 skins. Not sure what they are doing in the top left hand corner.