One cause of the white powder could be the deterioration of the carpet backing.
White powder under carpet.
Posted by turducken at 3 36 pm on august 28 2008 in my experience it s the dirt filtering through the rug.
You shouldn t necessarily be concerned unless sections of your rugs pile or yarn are slowly surfacing.
Efflorescence is normally worn off or washed away on unsealed concrete surfaces.
I think it is just carpet freshener.
The white powder of which appears underneath a tufted rug is actually dried up particles from the glue which had once held wool securely to the canvas or foundation of the rug.
White mold is often found in two locations in a crawlspace exposed soil and the lower portions of the floor joists.
Mold typically smells damp or musty.
We use that once a week before we vacuum.
Another cause could be alkaline salts coming up from the concrete slab underneath.
A ph test evaluates this as well as by checking the moisture content of the slab itself.
When i pulled the carpet padding up i found a lot of a white powdery substance.
On mine at least it s definitely latex from the backing that s bonded to the rug.
The white powder under your rug is latex and its powdery mess is a common occurrence with hand tufted rugs.
I put the wet padding in a pile and.
There is a canvas with the design mapped out that the wool strands are inserted into using a tufting gun.
Sometime vinyl and other materials break down and the result is a powder under the carpeting.
Smelling mold in your home is another symptom of heavy mold growth.
The stuff is powdery and uniformly white or light in color if that helps.
In cool climates mold growth on floor joists is rare.
If you have white mold visibly growing on your carpet then you have heavy mold growth underneath the carpet on the padding.
Heavy white mold growth on floor joists.
But when it occurs it s often white in color.