Patches on fresh krend

[Mr Blobby]

I was surprised when the krend installer sprayed the walls yesterday when rain was forecast.

Two hours after spraying it rained fairly hard for a few hours. Which is a shame because no rain is forecast today and its no colder. 

Render team back on site rubbing down and the back wall is like this in a few places.  

 

 

... Is this just part of the normal drying process and to be expected or is it more serious rain damage and should I be concerned?

 

Thought I'd ask here before I ask the render guy.

 

Edited 18 hours ago by Mr Blobby

[Redbeard]

Hard to tell from a photo, but based on what I seem to see yes, I think I'd be a bit concerned. The 'bald patches' look like... well, bald patches, where the grit has not spread evenly. But maybe I am seeing what's not actually there... Are the 'bald' patches smooth?

[Mr Punter]

2 minutes ago, Redbeard said:

Hard to tell from a photo, but based on what I seem to see yes, I think I'd be a bit concerned. The 'bald patches' look like... well, bald patches, where the grit has not spread evenly. But maybe I am seeing what's not actually there... Are the 'bald' patches smooth?

 

Yes, it looks like it has washed off.  A bit silly rendering in the rain.

[Conor]

We had that. Renders put another skim in the affected areas, not noticeable since.

[Redbeard]

In my limited experience It was b----y hard to do an 'invisible mend' on patches like that. I hope your patches don't 'show'. My experience was doing it myself. If someone else is doing it for you then they have to try to get the 'invisible mend', and arguably re-do it if they cannot. Again, hopefully the pictures are not 'telling the story', and it's not what I think.

 

EDIT: @Conor must have posted his while I was 'composing'. He got an 'invisible mend' - things can obviously be more positive than I suggested. Good! And good luck.

Edited 15 hours ago by Redbeard
Cross-posted with @Conor

[Mr Blobby]

5 hours ago, Redbeard said:

Hard to tell from a photo, but based on what I seem to see yes, I think I'd be a bit concerned. The 'bald patches' look like... well, bald patches, where the grit has not spread evenly. But maybe I am seeing what's not actually there... Are the 'bald' patches smooth?

 

yes, smooth

 

I asked the renderer about the bald white patches at lunch time and he said it had not yet set and so they hadn't finished scraping it.  He told me it wasn't water damaged and will be fine.  I was rather skeptical about all this, but, to my amazement I went back to check the same wall a few hours later and all the marks have gone.  In fairness it was about 4 pm and light was fading so I will take another look tomorrow, but it seems like all the smooth white patches have, to my amazement, all dissapeared.

 

I will ask the renderer if he patched it up to fix it. Not that he would tell me of course.

 

Now my concern is that after today's spraying the temps have dropped to zero.  Hopefully todays render doesnt get frost damage 🤞

Edited 10 hours ago by Mr Blobby

[Redbeard]

Did they not sheet it up? When we did ours in an October, much later (as ever) than originally planned, we were watching the weather like hawks, and sheeting up with hessian after every pass.

[torre]

2 hours ago, Mr Blobby said:

they hadn't finished scraping it

I'm not a renderer but this sounds likely to me, having seen a scraped coat done on a neighbour's extension - they put on a thick layer then next day when it's set but not fully hard they scrape a couple of mm off to leave that flat but grained finish. 

 

I don't think it's been patched this afternoon, it wouldn't have hardened enough to finish.