"Warm Air Dries Wet Walls Damaged From Flooding"
by Patrick Moffett, Industrial Hygienist,
Environmental Management &
A recent series of tests has
shown that by imploding controlled amounts of warm air in wall and ceiling
cavities you can reduce wall damage and problems associated with molds.
We used a machine specifically designed and manufactured for wall drying to rid
walls of their wetness, even with fiberglass insulation, and walls having latex
paint and vinyl wall paper on them. The machine that we tested over several
months is the Injectidry® Trapped Moisture Ventilating System,
manufactured in the State of Washington by Injectidry Systems.
What was shown through repeat tests is that the drying system displaces moisture
by forcing in warm dry air through 3/16 inch holes that are drilled above the
sill plate, but behind the baseboard. Within a matter of hours, porous building
materials started to give up their saturation and within one or two days
completely dried the wall cavities and wall materials to pre-existing condition.
Walls having wet fiberglass insulation took a day or two longer to dry.
Assuming the flooding condition was caused from fresh water, there is no history
of prior flooding, and the drying system was in place within the first 12 hours,
there were no visual signs of unwanted molds forming in or behind wall materials
after drying. Yet, when the drying system was not used, visible molds did
develop inside wall cavities within a week, even when traditional building
drying methods were used, such as with forced air movement and building air
exchanges of drier outside air.
When the HP drying system was used behind non-porous wall paneling, vinyl wall
paper, floor to ceiling glass mirrors and marble covered walls, the interior
walls, dried within a matter of two to three days, when walls did not have an
insulation in them. Plaster and gypsum-based wall materials were carefully
monitored, and appeared to maintain their structural integrity. There was no
indication that any of the wall coverings required repair or touch-up, except
surface vacuuming of dust. What was surprising, is how well the HP drying system
worked with built-in wall cabinets. None of the expensive back-wall paneling
materials so far have warped, delaminated, or discolored from flooding.
Especially when the HP was installed within two days and allowed to dry out
wet walls for an average of three days.
"I can only imagine that both
the homeowners and insurance adjusters were happy with the drying results and
material damage cost savings."
Just thought that I had better tell you of the
job at Parliament House (our white house ) they had a fire pressure line
burst above the cabinet room which reliesed water at a great rate some say
100.000 gallons what ever there was a lot of water it managed to wet very
seriously some 6000 sq. m2 of hard wood flooring . we were called 5days
after the event . We installed three injectidry systems and also employed
positive drying to some areas using a tenting process . I can tell you we
had some knockers , but with in the week all was complete and every one from
the Prime Minister down happy , you see the PM'S office was right in the
middle of the mess . Most of the hard floor was starting to cup , that
stopped and in the end was hardly noticeable , there was no need to sand
emmediatly , we got paid well for it , We have some photos of the job if you
would like . happy to e-mail them to you to use . Ernie all this was
possible because you took the time one Sunday to show a few Australians
Negitive drying (do you remember ) thank you , we have done a lot since
then but this one was AUSTRALIAS LARGEST HOUSE . So pleased were they that
now we are on the Disaster plan ,which means when hell breaks out , we get
to call , thought that you would be interested and wanted to say thanks
anyway , we will be needing more equipment soon .
John Hickey Belfor /Australia
"Our drying schools (110 floodings) & over
20 years of restoration experience have provided ample testing of
Injectidry's VAC-IT Panels. Right now, if used correctly, the
Panels are by far the most effective floor drying system we have ever
seen. ATTENTION SERIOUS STRUCTURE DRYERS: You should consider making
the panels a part of your drying arsenal or you'll get left behind."
Chuck Dewald Jr. & Chuck Dewald lll Vortex Drying Schools
"We have used the
VAC-IT PANELS on 13 wood floors to date. None of these
floors had to be refinished, and the drying occurred more rapidly than
by any other method we have tried. The research and testing we have
done in our drying school show the same results." Chuck Dewald
Vortex Drying Schools
"Attached is a loss I just completed, used
Injectidry for ceilings & Panels on the hardwood floor, adjuster was amazed
as well as the contractor. He had
brought a hardwood floor person in to see the damage, he said as far as he
could see there was no need for his services. Are the new panels available
yet?" Kevin Nelson Nelson Clean Care
Ernie! Just to let you know, right after we purchased the floor
drying system, we had a flood with a very expensive oak floor, that we
successfully dried with the system. Then we had another small
flood in an apartment that we own, and used the system to dry the wood flooring
Two weeks later, the customer that we dried the wood floor for had
ANOTHER water damage situation, and the wood flooring was successfully dried
again, AND our apartment flooded again!
We also had another unit that had some warpage along the
edges of the wood floor from water damage, and we were able to use the system to
correct the warpage in the floor, making our customer (and his insurance
company) very happy.
Since we purchased the system, we have used it on at least 12 occasions.
Each time, we have been able to successfully dry the flooring, back to it's
pre-loss condition. The insurance companies questioned the method at
first, but once they see the results they are literally "floored". We now
have adjusters calling us when they have a water damage involving wood flooring,
because they know we can dry it. We also offer them a guarantee, which
they love - if the system does not dry the floor to it's pre-loss condition,
they don't pay for it!
Lisa Jordan, Accent American
just wanted to let you know how great your Injectidry machine is.....From
drying ceiling and walls to removing moisture from hardwood flooring, this
is the best piece of equipment to come along in a long time." Denny
Farrell, DK-Better Floors & Restoration Placentia, CA
Vac-It Panels have literally changed the way we dry hardwood, and any hard
surface floors and underlayment." Kurt
"As a long-time user of the Injectidry
system, I am always excited when a new accessory is developed and added to
the product line....The
Vac-It system was no exception." "Vac-It's rigid panels allow us to set up
a drying system for hardwood flooring in just a few minutes." We have used
this system to dry everything from exotic hardwoods to engineered flooring
and ceramic tile. Thanks for making such a fantastic product, Injectidry!"
Nathan Koets, CR Advanced Restorations, Inc. Grand Rapids, MI
"Got my system last June and it
has allowed me to successfully complete jobs I would have had to turn down
before. It paid for itself after 1 job. Just dried a wall and ceiling
in 3 days. Thanks for inventing this terrific tool.You demonstrated a system
for drying hardwood flooring in Toledo...pretty neat...probably will get it
sometime. Injectidry is the originator and still the best!"
President, Best Way
Carpet Cleaning Ann Arbor, Michigan
"No one can consider themselves a market
leader in their area without this weapon in their arsenal...
It's the latest technological breakthrough for structural drying and it
really works. Restoration contractors finally have an answer for trapped
Jeff Farley, Custom
Restoration Fairfield, CA
structures are being dried simultaneously...enabling
us to turn a loss over to the General Contractors within just a few days, not
weeks. The response from claims adjusters has been extremely positive.
Ventilating holes are about the size of the clicky end of a Bic pen, so drywall
repairs are almost non-existent. All serious restorative drying contractors
should be equipped with the Injectidry HP, it's a required tool of the trade. "
Lou Gil, White Star Carpet Structural Drying Division Palmdale,
doing a water damage job at the home of a family where the father is a
paraplegic. Staying in even a barrier-free hotel room would have been a major
hassle, and he did NOT want to leave his home. Our biggest challenge was how to
dry underneath the ceramic tile in the main level bathroom WITHOUT restricting
In the bedroom directly below the bath, we removed part
of one wall, some saturated insulation, and the textured ceiling. Fortunately we
were able to access the subfloor, tiled tub-surround and underneath the shower
and cabinets from the floor below with the ceiling gone. In this room we placed
a Dri-Eaz 325 desiccant and three airmovers aimed at 45's or straight up.
Back to the bath upstairs. We set up the Injectidry Vac-It system (neg pressure)
with a HEPA scrubber filtering the exhaust. (The wife is a smoker and an
asthmatic, so we also have a Negative Air Jr. scrubbing the air in the home as
we dry.) We were able to set up the felt grid and keep the hose lines and tubes
off to the side, without blocking the door. Problem solved! It may not be as
pretty as the usual set-up, but both the homeowner and I are thrilled." :)
CR Advanced Restorations, Inc.
They were not going to dispose of
this laminant flooring because this was a homeowner improvement, and not
part of the building insurance. So they said to me, "Do something". This
was my solution. This is the 8th floor of a skyscraper. Water came from
the 9th floor unit -- water over flow while the homeowner slept -- and
water ended up under part of this laminant floor. "Squish, squish" the
homeowner said. "I saw water squishing up along the ends when I walked
on it", she replied.
There is no visible swelling anywhere, so I
suspect the water was mostly between the concrete and the laminant's
foam underlay. I took off a piece of baseboard and the threshold between
along the bathroom door (photos #2 and #3 show this). I stuck a few
shims under the laminant to lift it up some. It is nice not to have to
set up the matting in every case. Set up was a mere 20 minutes. I didn't
want to use positive pressure as that could potentially blow the foam
underlay out of place.
With a suction cup I am able to raise the
floor to allow some air flow to particular areas for short moments. I am
sure if one were to use hot dry air one could raise the floor in areas
to dry it significantly in a few hours...that is if the floor has not
been visibly damaged with swelling, etc., as in this case.
sure a different solution could be used to float this floor with
positive pressure along the perimeters with just regular turbo air
movers or an axial fan. There is usually enough space along the
perimeter to tape the
underlay every 6" to the laminant floor in
order to prevent the underlay from moving significantly. Taping would be
a big job as all the baseboard would have to be removed in order to gain
access to the foam underlay. Clayton Shull
Subject: Job #1- $50,000 oak floor
It is quartersawn oak. It has a gold fireplace (real gold sheets put on it by a
craftsman from Greece) and the floor also has a brass inlay palm tree near the
entryway. We had to refinish this
entire floor, but replacing it would have cost a fortune ($50,000).
Quartersawn wood swells upward, and in many cases readings were higher than 20%,
but it all dried out fine.
Note the two different levels of
flooring and how the injectidry was versatile enough to address all affected
areas with one machine. I have more photos, but the Dri-eaz 2400 gets in the
way. Also, I have close-up pics of the particular damaged areas such as
swelling, cupping, damaged finish, etc.. Clayton
From: Clayton Shull
Your machines are great!! I was able to dry a two-level cherry wood floor in 2
days. I still like to use the old plastic screen so homeowners can walk through
to the other rooms if necessary, and the old screens roll up and cut better.
I hope you can still get that screen product. We don't care if it cost more.
Keep up the great work. Clayton
Ernie, Here is another injectidry job: Oak Hardwood floor in the kitchen.
Dried over the weekend. No refinishing required just like that cherry wood
floor I did a few weeks ago. Note the use of SLIDERS under the stove,
otherwise the legs would have torn the plastic. People did there normal
living while this equipment was on. They can walk on the floor. Also, I
doubled up the plastic just in case a serious tear was to occur. The exhaust
air was no big issue in this home.
I, myself, probably get one-two
hardwood floor drying jobs a week. Clayton
Subject: I Love This Machine!
I've been in the
restoration business for 13 years.
Over the course of the years I have gutted and butchered many a structure, all
in the name of drying. Thanks to this wonderful invention,
called Injectidry, I'm hanging up my demolition hard hat forever.
What a pleasure to dry out these businesses and homes non-intrusively, in a
clean and professional manner.
Recently I dried a doctor's office with double wall board, vinyl wallpaper,
vinyl base trim and inner wall insulation. To make matters worse, I could only dry
after hours at night. Thanks to Injectidry, the doctors never missed a day of work and
all patients were served. This saved the insurance company untold amounts in
lost business payments and made my company look like a million dollars. I can't
wait to ride in on my tall horse (Injectidry 60) on the next jobs.
What impressed me about this machine is it's awesome power.
I've had the opportunity to compare it with the Dri-Force, Injectidry wanna-be,
and the fact is there is no comparison. With a full length of lines hooked up on the Dri-Force, you end up
with less air force than my 2 year old daughter could blow through a straw.
In comparison to the
Injectidry which eagerly blasts a jet of hot air into the wall cavity, just as
readily at the end of the line as at the front of the line. This wonderful tool
makes me eager to dry structure and it makes me proud to collect payment from
the insurance company on it. Thank
you for this wonderful, money-making, customer-and-insurance-adjuster-pleasing
P.S. Thanks Ernie for the new
activated hose lines, they work 100%
better than the others.
Thanks again, for ALL of your OUTSTANDING customer support.
Robert D. Soto