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RV EPDM RUBBER ROOF REPAIR PROCEDURES
Clean:
1.
Scrape away all existing patch materials, caulking and all traces
of silicone or silicone caulking.
2.
Optional: Remove edge metal which around roof edge. If you do not
remove edge metal, you can overlap the outside of the metal with
RoofSeal.
3.
Clean all dirt and oxidation from
roof surface. The exact method depends on roof material and type of
contamination or oxidation. If oil
or grease are present, remove them FIRST.
For small repairs to EPDM RV use a
plastic abrasive kitchen scrubber in repair areas. Scrub until clean then wipe or blow away
all particles. This is the best method.
BASIC CLEAN:
*
Stiff Broom or blow off.
* Use 1:3 Bleach/Water mixture on tough stains & mildew using
scrubber.
* Clean using a stiff broom (or powerwash if leakfree) to remove all loose
surface materials.
* Let dry thoroughly.
*
For stubborn stains or grease, use
ETERNACLEAN together with clean rags
Important:
When using
Eternabond tape, all traces of silicone sealants or
waxes much be removed. Remove all silicone surface wax with
ETERNACLEAN. Cut out any silicone
or unknown caulking.
Power wire brush old joints to remove all surface silicones. Re-caulk with
M-1
sealant.
Re-Caulk & Repair:
5. With roof penetrations
(vents, hatches, etc), you have a choice to remove, or leave on and
"flash" around them (good time to upgrade any of these). It simplest
to leave them on. Remove ALL old sealant using a putty knife as a
scraper. Clean roofing and flashing surfaces as above. Replace any rusty screws with new stainless
ones. Put
M1 sealant into screw holes before putting in new screws.
6. Rough up areas
to be caulked with a plastic scrub pad or rough sandpaperor wire brush. Remove
particles. Caulk gaps, voids and cut-out holes with
M-1. Let
cure 24 hours.
7. Optional: After
caulk cures, repair or reinforce as needed any damaged seams or high
stress areas using
EPDM White
Coverstrip or Webseal.
Apply
Repair / Roofing Materials:
At this point, you can either repair
cracks and tears with
Eternabond Roofseal THEN coat with
Formflex
(discussed further below), or do the entire roof with new EPDM roofing
membrane or patch areas with RoofSeal. Repair
and recoating with Formflex is generally done.
New EPDM Roofing Materials Method.
Click link.
Eternabond RoofSeal White
Application Method:
8.
Now you can apply RoofSeal White. For large areas, use wide product.
and plan
your coverage using overlapping strips like wallpaper. Start at the
BACK and works towards the FRONT of the roof). OVERLAP each piece to
the next about 2 inches.
TIPS: Use a 4" roller, not a 2" to roll-in large strips of material.
Use 2 people. One to pull the tape tight & straight and to gradually pull
backing away AS YOU stick it down by sweeping in gradual circles with
you hand as the backing is pulled away. Don't try to pull the whole
backing off at once. Watch the Eternabond DVD movie before applying
product to see these techniques.
9. Along the
base of roof penetrations (vents, hatches etc), put another layer of
Eternabond tape which
wraps up the edge a couple inches.
10.
Put your edge metal back on with new
butyl tape sealant and new
Stainless fasteners and
Sealing Washer. OR use new fasteners, and put
M1 sealant over the top of each one.
OR put another strip of RoofSeal along the entire metal strip (cover the
whole strip, overlapping both sides by 2".
You
now have a great looking and long lasting new roof.
CAUTION: RoofSeal is very slippery when
wet. It is not designed nor recommended for any walking surface.
For walk-deck surfaces you should refinish with a textured
polyurethane deck coating, as outlined in our
houseboat re-roof
procedure.
HOW TO RECOAT A
RV EPDM ROOF:
This is the basic process for
recoat of an EPDM roof using
Formflex 6000.
CLEAN, RE-CAULK AND REPAIR:
Clean, re-caulk and repair following
the above techniques for Roof Replacement.
APPLICATION:
* Remove any skin at 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 (you should
have none with a new can).
* Apply FIRST COAT with 3/8" or 1/2" nap roller at rate of 75 sq.ft
per gallon (VERY THICK).
* Let cure 1/2 to 3 days (depending on temperature). Materials will
feel tacky for up to week. This is normal. It will dry to a near semi-gloss
finish.
* Apply SECOND COAT as above.
* It will take up to 7 days until all tackiness is gone and material
completes a full cure.
CLEAN-UP:
* Soap & Water.
STORAGE OF UN-USED MATERIAL:
* Clean lid area and reseal. Unused
materials will keep for years in a relatively cool area like a
garage. (just not in the hot sun).
More Information:
EPDM
Roofing Materials and Application
Roof Repair Items catalog
pages.
Roof Repair Info & Tips page.
Roofing Membrane Repairs (DIY
information)
New: Our
Houseboat Re-Roof Procedure.
What Tools Are
Recommended?
Each job is different,
but generally you just need to have on hand just 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.
*
Razor Knife or Roofers Scissors -
To cut Eternabond.
*
Scraper - To remove old unwanted
caulking.
*
Caulking Gun - to apply NP1.
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).
NEW galvanized metal materials should be primed
in areas to be sealed, as oil type contaminates can remain on the
surface.
How Much of an Overlap
Seam is
Needed When Applying RoofSeal to larger areas?
Two inches of overlap is the
recommended "best practice" (2" of each layer of tape).
How Are Seam Areas
Repaired & Re-Enforced before Recoating the Entire Roof?
Clean. Remove all silicones. Cut out
any loose areas. Caulk any deep areas (use M1
Sealant) then tool to a level surface). Let
M1 cure. Apply WebSeal with two inches of overlap. To help hide
seam area, apply M1 caulk along edges of WebSeal and feather out
(like taping a sheet-rock seam). Apply UV resistant finish coat over
WebSeal & caulking (do when you do the whole roof area, or just over
the WebSeal if just repairing this area). (UV resistant finishes
such as Ultrashield, or
UV Protector).
Do it yourself RV roof Replacement, repair, Eternabond roofseal,
A-Seal, RV roof repair, sealant, waterproofing, roof leak repair,
trailer roof repair
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