Pressurized drying systems

[tres davis]

Positive or negative? When to use which one?
What about using 2 systems at same time one positive and one neg?
Curious peoples thoughts and insight for both floors and walls

 

[Onfire_02_01]

If I am going to introduce airflow behind walls/ceilings I usually will blow into the space and let the air come out where it may.

 

[Desk Jockey]

A push, pull would work well provided there is adequate time for the dry air to pick up the moisture laden air as you cycle it.

 

[tres davis]

Used two systems on a two story job where water came under cabinets and tile floor from above. Accessed through ceiling of bottom floor with a push/pull system and a dehu pumping into the push system. Was bone dry in 2 days.