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Sudhakar
unidentified marks on walls

Unidentified marks, finger print like, started appearing on the interior walls. Actually I can feel them. I have photos.

Pl help.
Thanks.
Sudhakar.

A. Spruce
Re: unidentified marks on walls
Sudhakar wrote:

Unidentified marks, finger print like, started appearing on the interior walls. Actually I can feel them. I have photos.

Pl help.
Thanks.
Sudhakar.

Post them up.

If the "fingerprints" are in straight vertical lines, it is likely the fasteners showing. Divots mean that not enough drywall compound was used to fill the depressions where the fasteners are. Bumps indicate fasteners that have become loose.

Sudhakar
Re: unidentified marks on walls

Here are the photos.

Thanks.
Sudhakar.

ordjen
Re: unidentified marks on walls

Sudhaker,

What is the time frame? Did you do the last paint job? Was there anything visible that was painted over? It appears as if something was randomly scuffing the ceiling with some substance that is bleeding through.

The marks don't look like moisture stains. Neither do they look like mildew. My first thought is to seal the areas in with BIN. Bin will stop just about any kind of stain. Unfortunately, you are probably in for a general repainting of the ceilings. You might possibly get away with a touch up if you have the original paint and it is a dead flat or ceiling paint.

A. Spruce
Re: unidentified marks on walls
ordjen wrote:

Sudhaker,

What is the time frame? Did you do the last paint job? Was there anything visible that was painted over? It appears as if something was randomly scuffing the ceiling with some substance that is bleeding through.

The marks don't look like moisture stains. Neither do they look like mildew. My first thought is to seal the areas in with BIN. Bin will stop just about any kind of stain. Unfortunately, you are probably in for a general repainting of the ceilings. You might possibly get away with a touch up if you have the original paint and it is a dead flat or ceiling paint.

Ditto:cool:

Sudhakar
Re: unidentified marks on walls

Spruce,

Thanks for your replies. These stains are not on ceilings but on side walls. I am due for repainting of my interior. But I am worried that something may be happening behind the walls. How do I check that? And also, this is happening more only in that room.

Thanks again.
Sudhakar.

A. Spruce
Re: unidentified marks on walls

I'm guessing that you're either a new renter or homeowner and that the last tenant of the house had painted over staining.

If there is no plumbing in this wall and it's not an exterior wall (you mentioned other walls within this room having a similar problem ) then they are likely surface smears by a child, probably food or drink, possibly a craft substance. There's no way to check the wall cavity without drilling holes and using a scope - expensive and unnecessary. Visual inspections of the roof, attic, and opposite side of the affected walls will give you your answers.

As Ordjen stated, a BIN primer will seal just about anything in. Zinsser is an excellent brand and their BIN is in a red labeled can. I'd apply two coats over the entire wall, then apply two coats of quality paint..

Sudhakar
Re: unidentified marks on walls

There is no plumbing. But there is a powder room down below this room.

And also, my child is teenaged.

Can I cut the dry wall and then is it easy to close it?

Thanks.
Sudhakar.

A. Spruce
Re: unidentified marks on walls

You can cut the wall open, but unless you're proficient at patching drywall, you'll make a mess of things.

The pattern of the staining looks to me to be a topical problem, something was smeared on the wall from left to right and down. It almost looks like a slimy dog ball had been bounced there, or one of those Wacky Wall Walkers that were all the rage in the mid-90's. IMHO, if this were an internal problem, then the markings would have more of a patchwork pattern to them rather than a smudged/smeared look.

Here's an idea. Rather than cutting a hole in the wall. choose a spot where there's a large flat area in the texture and carefully scrape through the paint surface into the drywall. As you do this, pay attention to whether the stain is only on/in the paint, if it is indeed something embedded in the drywall. If you get to white chalky powder, then the stain is topical, if the chalky powder is the same color as the stain, then it may be a deeper problem. When you're done probing, the small area can be filled with spackle and painted, you'll never notice it.

Sudhakar
Re: unidentified marks on walls

Yes Spruce. I tried to clean it with water and was able to clean it. But my worry is , they are appearing again not at the same place but a different place. Based on your logic, they may not be caused by something behind the wall.

Are these marks made by any crawling insect or roach ?

Thanks.
Sudhakar.

ordjen
Re: unidentified marks on walls

Damn, I hope to never run across the roach that would leave that kind of residue! :D

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