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Foam
Roof, Large Repair Procedure:
1. Cut out and remove all wet and damaged foam roof areas. Scrape all the old foam
out using a Roof Scraper
Let the roof surface dry completely.
2. Patch any problem areas you may find in the underlying deck with
Eternabond RoofSeal
Black
3. Re-foam the damaged or new roof areas with
RHH
FOAM
high-density roof foam in self-contained dispensers. More information
on Spray Foam
Products and methods.
Hints: Using the foam is easy.
Attach the hoses, turn on the valve, apply foam to areas. Immediately,
while foam is still wet, use something like a long 2x4 to tool it flat
like the remained of the roof which is not cut-out. This is really
sticky stuff so be prepared with some rags and wear disposable gloves.
Work quickly. Foam will skin quickly and set up in
minutes.
4. Coat the top of the foam with a premium coating
to protect it from future damage:
We recommend
WC-770AXP (ponding water grade), or
Ultra Shield.
It would be a good idea to coat your entire foam roof with this
material if you think you would like to protect the rest of it from more damage in
the future.
Foam Roof SMALL Repair Procedure:
1. Find locations of penetrations into foam. Be sure the foam is dry
completely.
2. Clean the roof surface as need to surface remove contaminates,
without allowing liquids to get into any holes.
3.
Patch problem
areas Eternabond
RoofSeal White.
Eternabond RoofSeal White can be used over all types of roof surfaces. UV
resistance of RoofSeal White is estimated at
18 to 35 years (tested by Eternabond).
Foam Roof Hail Damage Repair:
1. Find locations of
dents or small penetrations into foam. Be sure the foam is dry
completely.
2. Clean the roof surface as need to surface remove contaminates,
without allowing liquids to get into any holes. (rag well with a
bleach-water mixture).
3.
Fill dimples
with
WC-800W patching material using a 6" wide putty knife. Do not fill
more than 1/4" deep at a time. If you need more add another layer
after the first cures.
4. If
reinforcement is needed, 3-course repair with
WC-800W
and
soft face polyester fabric.
5.
Overcoat with
1-2 final layers of Foam Roof Coating, such as
WC-770AXP (ponding water grade) or
Ultra Shield.
Patch problem
areas Eternabond
RoofSeal White.
Eternabond RoofSeal White can be used over all types of roof surfaces. UV
resistance of RoofSeal White is estimated at
18 to 35 years (tested by Eternabond).
Foam Roof Ponding Water Repair:
1. Find locations
ponding water. Be sure the foam is dry
completely.
2. Clean the roof surface as need to surface remove contaminates,
without allowing liquids to get into any holes. (rag well with a
bleach-water mixture).
3.
Fill low areas
with
WC-800W patching material using a 6" wide putty knife. Do not fill
more than 1/4" deep at a time. Let cure overnight between layers.
4.
Overcoat with
1-2 final layers of a Ponding Water Rated Coating, such as
WC-770.
Foam Roof Recoating:
Related Information:
Foam
Roof Products and Information
Roof Repair catalog
pages.
Roof Repair Procedure Database
RHH
Foam Technical Info and Instructional Movies
Caulking & Sealing (air conditioners, vents,
skylights, etc): Use
Duralink (100% solids, solvent free) or
NP-1 polyurethane sealant for sealing around all roof penetrations.
You can use this either before or after coating with FormFlex.
Related Questions & Foam
Roof Repair
Help:
Do I
Need to
Prime Before Applying Roof Repair
Products?
For Eternabond tapes, use
EternaPrime when surfaces to be bonded are very dirty (or oxidized
and cannot be cleaned well). EternaPrime prepares the surface into an
adherent platform for the Eternabond tape to adhere to. Also use EternaPrime if the
installation temperature will be below 40 degrees F (except when
using
WebSeal and One Step, which
can be applied down to zero degrees F).
How Much of an Overlap
Seam is
Needed When Applying RoofSeal Over Large Areas?
Two inches of overlap is the
recommended "best practice" (2" of each layer of tape
is overlapped).
Now you have a decision. Do you want a permanent seal, or one which could
be serviced in the future if needed?
Procedure for
recoating a foam roof using
WC-770AXP
or
Ultra Shield.
REPAIR AND PATCH FOAM AS NEEDED.
CLEAN:
* Use a
stiff
broom.
* Powerwash.
* Let dry thoroughly.
APPLICATION:
* Open WC-770AXP can. Remove any skin at the surface (you should have none with a new can).
* Mix well with
power mixer
if material
has set for a long period and any separation is visible (again, you should
have none with a new can).
* Apply FIRST COAT with
3/4" nap roller at rate of 75 square feet
per gallon (VERY THICK).
* Let cure 1 day (depending on temperature).
* Apply a SECOND COAT as above.
* It may take up several until all tackiness is gone and material
completes its full cure.
CLEAN-UP:
* Soap & Water.
STORAGE OF UN-USED MATERIAL:
* Clean lid area, reseal. Unused
materials will keep for some time in a relatively cool area like a
garage. Do not allow to freeze.
MORE ABOUT ETERNABOND:
What is Eternabond Tape?
Eternabond Leak Repair Tape is one the
most aggressive adhesives available. Originally developed and
available for industrial use, Eternabond is manufactured from
specially formulated elastomeric resins (MicroSealants) bonded to woven, aluminum,
or mixed polymers for maximum conformability. These materials are
prefabricated to provide uniform thickness and will expand/contract
within normal ambient thermal conditions without ever hardening or
losing its adhesive qualities. Eternabond is perfect for surfaces
like rubber, fiberglass, metal and even polyethylene and is now
available in many convenient sizes.
Why Use Eternabond?
Utilizing its advanced MicroSealant
technology, EternaBond continues to provide permanent waterproofing
solutions for a variety of commercial roof repair applications. RV,
mobile home, steel building, barn, and tractor-trailer owners all
suffer from the same problem - leaks eventually occur and are
difficult and expensive to repair. Eternabond adheres to most
surfaces, including EPDM rubber roofs and all storage tank
materials, virtually on contact. Eternabond has an elongation
capability of up to 500%; so as the surface it is bonded to changes
shape, Eternabond changes with it - without losing its grip and
without losing its seal. This makes Eternabond perfect for virtually
all leak repairs!
What makes Eternabond
different from other leak repair products?
Most repair products fall into one of
three categories: a material with a glue applied to its surface
(like duct tape), a gum material that lacks adhesive aggressiveness,
or a liquid that you pour and spread.
Eternabond repair tapes have no glue or solvents because Eternabond IS the glue/sealant.
The highly aggressive adhesive is extruded through a die, creating
the tape shape needed for easy repairs. One side is laminated to a
strong backing material and a release liner is applied on the other
side.
Is Eternabond hard to
install?
Installing Eternabond is as easy as
putting on a piece of tape! Eternabond requires no glue, mixing, or
caulking. DO NOT
INSTALL OVER SILICONE.
How UV resistant is
Eternabond RoofSeal White?
In UV testing,
Eternabond was subjected to a 4000 Hour QUV Weather-O-meter Test
with UV Light UVA 340 in the presence of humidity. Under these
grueling conditions Eternabond lost only 2.8% of it's flexibility
for each 1000 hours of exposure, while gaining 11.8% in tensile
yield (strength) per 1000 hours of exposure. This extrapolates to an
expected exposed life of 18 - 35 years. Technically speaking, any
product that will last 18 - 35 years exposed to the weather is
"environmentally stable".
Does Eternabond Tape
Contain Petroleum Distillates or Butyl?
No. The
base polymer of Eternabond does not contain any unsaturated or
double-bonds. Eternabond is already down to a single bond between
carbon atoms. Without the double-bonds, there is nothing In
Eternabond for the elements to attack, nor can Eternabond attack
OTHER elements. It is perfectly safe over EPDM and other materials.
Best Materials Specializes in Tips and
Techniques for foam Roof Repair, foam roof, repair,
Eternabond roofseal,
Formflex-6000, foam roof coating, foam roof leak repair.
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