Hi guys,
I have been reading the render threads but I would like some more information if you would be so kind.
Due to re-ocurring small cracks in a bedroom wall (internal), I have decided to removed the plaster back to brick.
In the line of the cracking the mortar is nearly all missing as well as in other areas of the wall.
So to add some strength into the wall I am thinking of the following process :-
1. Raking out all the brickwork mortar joints (40mm depth)
2. PVA the wall
3. Fix 12mm battens (vertical)
4. Sand + cement (4 in 1) for a single float coat 12mm
5. Skim wall at later date.
My understanding is that by raking out the mortar joints, I will have created a mechanical
key for the 12mm float render coat, so the scratch coat could be by-passed.
Is it ok to use this mechanical key instead of doing a scratch coat ?
Will a single 12mm coat be ok or is it too thick in one go ?
I would love to hear you comments on my plan (particulrly the mechanical key) as well as
any other suggestions.
Many thanks.
I have been reading the render threads but I would like some more information if you would be so kind.
Due to re-ocurring small cracks in a bedroom wall (internal), I have decided to removed the plaster back to brick.
In the line of the cracking the mortar is nearly all missing as well as in other areas of the wall.
So to add some strength into the wall I am thinking of the following process :-
1. Raking out all the brickwork mortar joints (40mm depth)
2. PVA the wall
3. Fix 12mm battens (vertical)
4. Sand + cement (4 in 1) for a single float coat 12mm
5. Skim wall at later date.
My understanding is that by raking out the mortar joints, I will have created a mechanical
key for the 12mm float render coat, so the scratch coat could be by-passed.
Is it ok to use this mechanical key instead of doing a scratch coat ?
Will a single 12mm coat be ok or is it too thick in one go ?
I would love to hear you comments on my plan (particulrly the mechanical key) as well as
any other suggestions.
Many thanks.
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