Hi,
Have attached two pics for reference.
As you can see I have some type of brown stains coming through the masonry paint which was applied to a new render. The render was a completely new application about three years ago and all the old was hacked off.
However, as per the pics, there is some type of brown stain coming through the exterior masonry paint, primarily on the north facing wall.
Can anyone tell me what it is and how to get rid of it? Can i seal the spots with something (like a knotting solution for masonry)?
My painter said that it was some type of impurity in the render coming through, but I have repainted a couple of spots and eventually it has come though again.
Any ideas/advice gratefully received.
Have attached two pics for reference.
As you can see I have some type of brown stains coming through the masonry paint which was applied to a new render. The render was a completely new application about three years ago and all the old was hacked off.
However, as per the pics, there is some type of brown stain coming through the exterior masonry paint, primarily on the north facing wall.
Can anyone tell me what it is and how to get rid of it? Can i seal the spots with something (like a knotting solution for masonry)?
My painter said that it was some type of impurity in the render coming through, but I have repainted a couple of spots and eventually it has come though again.
Any ideas/advice gratefully received.