How to re-texture a patched rendered wall?

[richard27]

Hello community! Our new place had these smooth protrusions running throughout the wall in multiple places.

Attempting to make them less noticeable we:

• Sanded down the area
• Applied Ardit Rapidset Repair Mortar to the wall
• Applied paint primer

We haven't applied paint yet, but it seems to not have helped the situation at all as the difference in textures is very obvious.

Would greatly appreciate some suggestions on what we should do to get this looking the same or similar to the surrounding wall. Thanks all!

[Jewelleryrescue]

Hi @richard27 

You have done really well in trying to match the wall textures.  Smooth repair spots are one of the curses of repairs.

I think you are close to a solution if I may chip in.  

I would try applying another layer of paint layer with and then dabbing with a sea sponge to pattern the paint into dimples to try and approximate the patten elsewhere on the wall. Might help if the paint semi dry,

A possible sponge solution could be this car wash sponge

Sometimes applying another thin coat of repair compound and dabbing it with a sponge will make a more defined pattern as paint wants to sit flat re surface tension.

All this may or may not produce the results we want.

Hope these ideas help some.

[Dave-1]

Good Evening @richard27 

I saw the "smooth protusions" and recognise dthem straight away. They are badly plastered joins between sheets of plaster that were not filled and sanded properly.

You say you applied mortar? Is the wall concrete or plaster? As you have me thinking now.

When you used the primer paint did you use a paint brush or a roller brush? Newly painted areas can be a pain to feather in with the old. Depending on how many of these joins you are repairing it may be easier to sand then plaster and sand again and then recoat the walls. 

If the walls are concrete then maybe someone has tried to fill in cracks badly? Then the mortar makes sense and I still come back to it may be worthwhile repainting the wall if there are too long a lines of repair.

Dave

[MitchellMc]

Welcome to the Bunnings Workshop community @richard27. It's marvellous to have you join us, and many thanks for your question about repairing a wall.

If the first two images are the before pictures, then you are doing well. There are two issues here: the first is the filler they've used is proud of the wall, and the second is that the texturing isn't the same. Where you've filled and sanded, you've knocked the height down to be flush with the surrounding wall. That was one of the issues before; well done. 

Now, it's just a matter of mimicking the surrounding texture so your repair is less noticeable. @Jewelleryrescue has given some great advice. As they've suggested, apply paint, and then, whilst it's wet, stipple the surface with a sponge. Dabbing motions will pull up peaks in the paint. You might need to do this a couple of times to get the best result.

Please let us know if you have any questions.

Mitchell