Roofing Repairs and Service
Roofing systems are considerably easier to maintain and repair than
other roofing systems. While Built-Up roofs and single-plys must
be removed and replaced after their usable lives; repairing and
recoating an SPF roof enables it to last indefinitely.
a Foam Roof
a foam roof gets minor mechanically induced damage from equipment
or personnel, repairing the roof can be done with a caulking gun.
Larger penetrations into the roof can be temporarily sealed with
caulking as well, but it is recommended that the contractor should
permanently seal the area with a new layer of foam and coating.
Foam roofing can sometimes develop blisters, the most common cause
of which is due to the presence of moisture. The majority of blisters
do not pose a threat to the integrity of the foam roofing system.
repair attempts can result in leaks and premature roof problems.
If repairs are warranted, it should be left to the roofing contractor
to properly repair them. However, when waiting is not an option,
there are emergency foam repair kits available that can do the job
nicely when used correctly.
Roof Large Repair Procedure:
1. Cut out and remove
all wet and damaged foam roof areas. Remove
the old wet foam down to good dry foam. Insure the roof surface
is completely dry before proceeding.
a grinding wheel, appropriate saw, or razor knife, taper the cut
edge at a 45* angle away from the blister for a smooth tie-in transition
with the repair foam.
3. Patch any problem
areas you may find in the underlying deck.
4. Re-foam the damaged
or new roof areas with FOAM REPAIR KIT high-density, (2.5 lb to
4 lb density), roof foam in self-contained dispensers
Hints: Using the foam is easy. Read the enclosed directions carefully
before using. Attach the hoses, turn on the valve, and apply foam
to areas. Be prepared with some rags and wear disposable gloves.
Work quickly. Foam will dry and set up in just a few minutes.
5. Coat the top of the
foam with the appropriate coating to protect it from future damage:
We recommend Lapolla Coatings TF-1000 series or our more cost
effective TF-500 series.
It may be a
good idea to coat your entire foam roof with this material at this
time if you would like to protect the rest of the system from ultra-violet
damage in the future.
Roof Small Repair Procedure:
Lapolla's TF-750, TF-1000, and RCS-5000 White reflective coatings
can be used over all types of roof surfaces. UV reflectivities of
the White coatings are Energy-Star rated at approximately 85%.
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
using Urethane Caulk, and seal with Lapolla Coatings.
a Foam Roof:
For recoating a foam
roof, we recommend Lapolla Coatings TF-1000 series or TF-750 series Acrylic Elastomeric Coatings.
If the existing roof has a silicone finish coat we recommend
GE silicones by Lapolla.
These Coating Systems are our premium quality; fluid-applied, elastomeric
roof coating manufactured using advanced all-acrylic polymer technology.
The fully adhered seamless membrane exhibits outstanding reflectivity,
adhesion, flexibility and water resistance.
We have lower
cost elastomeric roof coatings as well.
Roofing Help and Related Information:
& Sealing (air conditioners, vents, skylights, etc):
Use a single component moisture cure polyurethane sealant, such
as NP-1 or Vulkem 116, (2 of the most common brands), for sealing
around all roof penetrations. You can use this either before or
after applying the coating.
Need to Prime Before Applying Roof Repair Products?
Not in every case, but in some instances Priming may be required.
When in doubt test a small inconspicuous area. Otherwise use Therm-O-Prime Primer when surfaces
to be bonded are dirty (or oxidized and cannot be cleaned well).
prepares the surface into an adherent platform for seam tape or
coatings to adhere to.
Much of an Overlap Seam is Needed When Applying Seam Tape Over Large
Two inches of overlap is the recommended "best practice" (2" of
each layer of tape is overlapped).