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POPULAR
ROOF REPAIR & PRODUCT PAGES:
Repair Recommendations:
For
RV or trailer roofs and seam repairs, we recommend Eternabond®
RoofSeal
White.
It's specially packaged for us with a White Ultra-UV resistant
surface and wound in economical 50' rolls (rather than
37'). RoofSeal White can be used over all types of roofs
including EPDM. UV
resistance of RoofSeal White is estimated at 18 to 35 years (tested by Eternabond).
RoofSeal is also available in
Gray and
Black. All finishes are compatible with RoofMate and AES roof coatings.
For
aluminum trailer & home seam repairs, we recommend
A-Seal
®.
It is an aluminum faced version of RoofSeal.
All
the Eternabond products are supported with a 10 year warranty by
Eternabond.
For
recoating a RV EPDM / rubber roof or metal trailer roof, we offer
several good choices. For a light-traffic roof, we recommend
Roofmate
HT (high tensile). It cures harder to take light foot traffic.
EPDM
Primer is recommended with any EPDM coating.
For a
complete or partial replacement of the EPDM
roofing materials, see
EPDM Replacement Roofing Materials
Caulking & Sealing (air conditioners, vents,
flashings,
skylights, etc): The best materials depends on the roof surface.
For sealing aluminum to rubber / EPDM roofs we recommend
M-1
sealant
. These
are premium high-performance materials designed for this
application. These two materials will work on ALL roof surfaces.
For sealing a vent/hatch/skylight to
a fiberglass roof surface we suggest
NP1
caulking. NP-1 has
800% elongation, 350 psi tensile and +/- 25% joint movement
capability (double most home-store materials). Its also UV resistant
& paintable!
For resealing RV windows we recommend
M-1
or
Sonolastic 150.
Either has tremendous adhesion to glass and the RV and will provide
many many years of trouble-free sealing.
Common Questions & RV
Roof Repair:
Complete EPDM roof replacement pictorial / instructions
FREE INSTRUCTIONAL MOVIES:
Eternabond instructional Movies:
Cold Weather
Modified Roof Crack Repair
Repairing Single-Ply Roofs (TPO, Hypolon, TPO, PVC)
Rubber
EPDM Roof Repair (for RV and all types)
RV Roof Repair (general repairs)
RV Slide Room Repairs
RV
Vent & Skylight Repair (general procedure video)
Skylight
Rooftop Installation
MORE MOVIES...
What is EPDM?
EPDM is synthesized
from ethylene, propylene and Diene Monomer. EPDM is
a highly
flexible and stable material.
EPDM
creates the binder for the final product, vulcanized EPDM mixed
rubber, which contains carbon black, antiozonants, antioxidents,
oils, and curing agents. The oils are added to act was plasticizers
and low temperature flexibility. Over time, the oils can deplete and
the EPDM sheet will shrink. This is one of the primary aging
factors.
EPDM is not resistant to oil or many
solvents. Roof repair products must be compatible with EPDM and
many are not (tar, bitumen, and high solvent content products can
attack & decompose EPDM).
Eternabond's unique adhesive system
has solvent or petroleum products. It is 100% compatible
with EPDM and all other roofing materials. RoofMate HT is solvent free and designed to be used directly over EPDM
(primer recommended).
What is TPO Roofing?
Thermoplastic polyolefin (TPO) roofing
was introduced to the RV industry in about 1994. It has a glossy
white surface. TPO sheeting claims to provide tear and puncture
resistance 20 to 50 percent higher than un-reinforced EPDM rubber
(depending on the material thickness - Best Materials). The material
offers excellent UV protection, will not retain odors and is
resistant to rot. It is easily melted or burned. This is the quickest method
to identify it. Cleaning TPO can be
done with Murphy's Oil Soap® type product and a soft nylon brush or
sponge.
What Preparation is
Required for Roof Repairs?
Brush dirt off and out from under
repair area. Clean all dirt and oxidation from
the roof surface. The exact method depends on roof material and type of
contamination or oxidation. For small repairs to EPDM use solvent
and a rag and scrub the repair area. As needed, use a
plastic abrasive kitchen scrubber. Wipe and/or scrub until clean.
If you are re-roofing large areas you can usually power wash
then aggressively scrub surface using a
stiff
street broom
(keep scrubbing until the roof is completely
white again). Generally stiff brooming with a floor cleaner is
good enough, followed by
EPDM
Primer.
If oil
or grease are present, remove them FIRST.
Important:
When using Eternabond tape (as well as all other roof repair
products), all traces of silicone sealants or
waxes much be removed. Cut out any silicone caulking, then remove any silicone surface wax with a
commercial automotive pre-paint silicone / wax remover.
Caulk any voids
in the area under which the Eternabond tapes will go. Select the caulk or sealant which best matches your roof surface material (and
prior to applying the caulk/sealent into the voids, be sure to scrub seams with plastic abrasive scrubber).
M1 sealant is recommended.
What Tools Are Needed
For Repairs?
Each job is different,
but generally you just need to have some simple tools:
*
Roller - This is the most important
tool. It is critical to "roll-in" and
flow the Eternabond adhesive.
*
Plastic Pot Scrubber or sandpaper - For
sanding & cleaning roof repair surfaces. Alternatively, an
electric drill with a wire wheel can be used for bigger jobs.
*
Razor Knife or Roofers Scissors -
To cut Eternabond.
*
Scraper - To remove old unwanted
caulking.
Do I
Need to Prime Before Applying Roof Repair
Products?
For Eternabond tapes, Use
EternaPrime when surfaces to be bonded are very dirty (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).
Use
EPDM
PRIMER
prior to applying Elastomeric roof coatings, such as
Roofmate
HT over aged EPDM (but
the EPDM must be cleaned first).
How Much of an Overlap
Seam is
Needed When Applying RoofSeal Over Large Areas?
Two inches of overlap is the
recommended minimum "best practice" (2" on EACH side
of repair area, using 4" tape).
How Do I
Repair a Tear?
Clean the repair area. Remove any silicones. Clean surfaces as above.
Apply M1 sealant to any recesses and tool to a level surface.
Let caulk cure. Glue down any loose EPDM areas using
M1. Add fasteners as needed to re-enforce repair area.
Let cure 24 hours. Apply
Eternabond RoofSeal with two inches of overlap to either side
of the repair area, covering any reinforcement fasteners used.
How To Replace a Roof Vent,
Skylight or Hatch etc:
Scrape away
caulking around screws that secure the item then remove screws.
Cut away all old caulking at the metal
vent-flange edge (avoiding cutting into the rubber roof). Use a
putty knife to get under the vent and loosen. Carefully lift off the old vent to prevent tearing the rubber roof.
Clean the roof area under and around the opening.
Fill any screw holes with
caulking.
Now you have a decision. Do you want a permanent seal, or one which could
be serviced in the future if needed?
Permanent Sealing Process:
Remove ONE side of the non-stick
backing and apply Eternabond
Doublestick tape to the bottom
side of the new vent flange. Press the tape into place, then roll
well to seal tape to flange. (Note: If needed, you can easily
"double stack" the Doublestick for sealing greater gaps).
Remove the remaining non-stick backing from
Doublestick sealing tape. Carefully Position the new vent cover over the
opening and press hard into place. The Doublestick tape provides an
even, permanent, watertight seal. In lieu of this, use a
heavy bead of caulk/sealant under the flange.
With
the vent positioned, secure it with
new exterior grade screws, such as
#9 SS HWH W/NEO SEALING WASHER. Tighten all screws gradually to
pull the flange down evenly and seat the Tape.
Finish the sealing by using strips of RoofSeal
over the flange outer surface. Cover the screws and vent flange edge and roof
surface 2". As always, be sure to thoroughly roll-in the Eternabond to seal
it permanently.
Serviceable Sealing Process:
For a seal which is temporary or
can be more easily removed in the future, use butyl sealing tape under the flange
following the above procedure for Doublestick. Form a good sized
bead mid-way around the bottom of the vent flange in the screw hole area. Place the vent. Move the vent
around a bit to seat the vent-to-flange putty to the roof surface. (Note: Butyl
Sealing Tape
forms an air-tight, but not a long-term water tight seal).
With
the vent positioned, secure it with
new exterior grade screws, such as
#9 SS HWH W/NEO SEALING WASHER. Tighten all screws gradually to
pull the flange down evenly and seat the Doublestick.
After screws are installed, caulk the outer
edge of flange-to-roof interface and screw tops with caulk/sealant.
How Do I Just Fix a Leaky Roof-Vent or Hatch?
Scrape away
all old caulking. Use a plastic scrub pad or sandpaper to clean
the surface. Swab with solvent and a rag. Be sure ANY silicone type materials
are removed.
Seal using strips of RoofSeal or
A-Seal
around the flange edge to roof interface. Also be sure and cover all
screws. Overlap the vent flange to roof surface edge by about 2" in each direction.
As always, be sure to thoroughly roll-in the Eternabond to seal it permanently.
How Do I Remove Old
Caulk?
Cut with Razor knife or sharp pocket
knife then scrape out
with a putty knife or scraper. Remove ALL old silicone residue.
Clean surface with Eternaclean
cleaner
, or similar, and a rag.
How Are
NEW EPDM Lap Seams Best Handled When Replacing EPDM?
After adhering new EPDM down, clean
the new lap seam areas with
Eternaclean. Cut
Doublestick seam sealant to length and apply in seam. Roll seam
well to fuse sealant.
To create permanent long-life very
durable seams, a secondary layer of
SEAM COVER TAPE is highly recommended. Its applied over the
seam, overlapping the two pieces. Its available by the foot or roll.
First apply
EPDM
Primer to any OLD EPDM surface where COVER TAPE will be adhered
(new EPDM just needs wipe down with cleaner). Then apply the peel
and stick COVER TAPE and roll well to fuse sealant.
How Are
Wood Seam Areas
Prepared Before Adding New EPDM to the Roof?
Set
any screws with protruding heads so they are flush. Clean off repair areas. Caulk any deep
gaps with NP1 sealant. Apply a layer of NP1 along wood seam about 4"
wide with a putty knife. Embed
fiberglass reinforcement into NP1. Apply more NP1 and feather
out the joint (like taping a sheet rock joint). Let NP1 cure before
adding new EPDM sheet. It takes 1-3 days, depending on weather. NP1
will not cure below 50F.
ALTERNATIVELY, use
4"
WEBSEAL. Its a peel and stick product which has reinforcing web.
Set screws, clean seams, peel/stick and roll well to fuse sealant.
Then you can immediately apply new EPDM roofing or make other
repairs.
How Are
OLD EPDM Seams
Repaired before Recoating?
Clean repair areas. Remove all silicones
or old coatings. Stick down any lifted areas using
Eternabond DOUBLESTICK sealant (no cure) or
M1
Sealant (which must cure). Then apply
4"
WEBSEAL.
Before applying an coating to EPDM
roof,
EPDM Primer is recommended. Apply EPDM PRIMER in a thin layer.
Let cure (about 30 minutes). Apply EPDM roof coating, such as
RoofMate
HT.
What Do I Do With
Edge-Metal & Screws?
For Temporary Repairs, overlap the
entire surface with RoofSeal White, or seal with NP1.
If screws are not
recessed, we recommend replacement with an exterior grade PanCake head screw, such as
PanCake Head
Screw along with a "Sealing
Washer". The screw + sealing washer
forms a nice looking, long-lasting, watertight seal.
For complete re-coatings, it is best to
repair any damaged joints using the techniques for seam repair.
What Do I Do Around
Vents & AC units etc?
Follow the seam repair methods, using
RoofSeal or A-Seal
How Do I Seal Around Irregular Surfaces?
Clean surfaces and seal using
Eternabond "WebSeal". WebSeal’s unique closed weave fabric backing and
microsealant composition you to use the tape not only on all flat
surfaces but also perfectly seal around curbs, angles, pipes and
bolts, making the tape ideal for any roof-sealing application. It is
especially useful for difficult details, penetrations, areas where
water ponds, and even imperfect surfaces. This 30-mil tape has no
memory, so it will not “spring” back to it’s original shape when it
is molded to fit unusual shapes, yet it remains flexible (expands
and contracts) in temperatures as low as negative 70 degrees
Fahrenheit. Webseal is designed to have a secondary surface coating
over the top,
Eternabond
UV Protector. Roofseal
is one-step, but does not form as readily around irregular surfaces.
Will
Eternabond Products Stick Directly to Wood?
Yes. Be sure to "roll-in" product like
other applications.
Can I Do My Entire
Roof with RoofSeal Tape?
Yes. This is an excellent solution
and quite cost effective compared to a roof replacement. Eternabond RoofSeal White is
available in widths up to 24". You simply lay down overlapping
strips to cover the roof (and using the pre-cleaning and post
roll-in processes).
How Do I Avoid
Slight Dirt Collection Along the Visible Edges of RoofSeal?
We recommend running a thin bead of
white caulk (M-1, Sonolastic or Np-1) along the visible tape edge (just enough to cover the
exposed Eternabond adhesive at the edge).
How Do I Recoat My
RV EPDM Roof?
This is the basic process for
recoating an EPDM roof:
REPAIR:
* Repair water leaks using the above techniques.
CLEAN:
* Use a
stiff
street broom.
* Remove all oil/grease stains.
* Use 1:3 Bleach/Water mixture applied
with a stiff street broom or scrubber on other tough stains & mildew.
Try TSP and water if the bleach does not perform.
* Powerwash.
* Let dry thoroughly.
PRIME: Apply EPDM roofing primer as per manufacturers instructions.
APPLICATION:
* Open can. Remove any skin at the surface (you should have none with a new can).
* Stir with paint stick 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 3/8" nap roller at rate as specified by
manufacturer.
* Let cure as required (1 to 3 days (depending on temperature).
* Apply a SECOND COAT as above.
What are my RV roof Re-Coating
Options?
-
Ultra
Shield Elastomeric Coating: Good performance yet
very cost effective. Easiest to apply (roll-on). Quick cure.
Non-flammable. Comes in several standard colors and can be custom
color-tinted. Not recommended for foot traffic.
-
RoofMate High Traffic:
Elastomeric Acrylic roof coating.
Non-Flammable.
Easy roll-on application.
-
Sonoguard Urethane Coating: A very high grade Urethane roof coating. The ultimate in
coating protection. Excellent for roofs with foot-traffic. ICBO rated.
Easy roll-on application. Available in 40 standard top-coat colors
and most any custom color. Outstanding stain and abrasion
resistance.
-
EPDM Rubber Coatings: Liquid
rubber & EPDM in a 2-part solvent base. Highest cost. Lower
elongation, Not oil resistant. Flammable when uncured. The most
difficult to work with. Not
recommended for foot traffic areas.
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.
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. For quick, emergency repairs Eternabond usually
will not require cleaning (although they recommend the repair to an
unclean surface be checked at a later date for proper adhesion) and
in many situations, Eternabond can be installed underwater. DO NOT
INSTALL OVER SILICONE.
What is the Eternabond Tape
Warranty?
Eternabond provide a 10-year limited warranty. Click here for
the details:
www.eternabond.com/warranty.jpg
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".
Best Materials has Tips and
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