Fiberglass; Roof Care & Seal Inspections; Sealant Types - Holiday Rambler Imperial 2008 Owner's Manual

Fiberglass

Inspect the fi berglass exterior. Periodic
inspection may reveal that fl exing of the
fi berglass exterior has created imperfections
in the surface commonly known as "spider" or
"hairline" cracks. A crack that has opened up
to reveal the cloth weave threatens the integrity
of the fi berglass. If the exterior exhibits signs
of damage, prevent moisture penetration,
particularly in freezing climates. Cover the area
using plastic sheeting and/or tape, and have the
damaged fi berglass repaired as soon as possible.
Roof Care & Seal Inspections
Wherever there is something affi xed to the
motorhome, such as a vent attached to the roof,
a seal is applied to prevent water intrusion.
Each type of sealant has a specifi c use. While
the belt line uses a silicone or urethane base
sealant to prevent water intrusion, roof openings
use an acrylic based sealant. Moisture intrusion
can occur at any time for a number of reasons;
therefore, regular sealant inspection and
maintenance will greatly reduce the likelihood
of moisture intrusion and costly repairs.
The motorhome is sealed at the factory.
However, extreme weather conditions can
shorten the life of sealant and harsh road
conditions can compromise sealant integrity.
Maintaining sealant is part of regular
motorhome maintenance. Inspect all joints,
seams and openings at least once every six
months.
While sealant integrity may appear fi ne,
a small void under the right conditions can
quickly cause major damage. Make a full
interior inspection for signs of moisture
intrusion every two weeks when the motorhome
is in storage.
CAUTION:
Inspect exterior seals, seams and joints
for sealant integrity at least twice a
year. Make a full interior inspection for
water leaks every two weeks while the
motorhome is in storage.
INSPECTING:
Surface must be clean and dry. Inspect
seal for voids, cracks, bubbling, peeling
or pulling away. Sealant that looks fine
without imperfections is acceptable
for continued service. Sealant that is
old, cracking, flaking or bubbling will
allow moisture intrusion and must be
repaired.
WARNING:
Inspecting sealant will require use of
a ladder or scaffold assembly. Roof
access is also required. Follow proper
safety measures accordingly. Exercise
extreme care whenever using a ladder/
scaffold assembly. Avoid getting on the
roof if it is icy or moisture laden as the
surface can be very slick. Use judgment
if inspection is considered dangerous.
Have the motorhome inspected or sealed
(if necessary) by a qualified service
technician.
20 0 8 I M P E R I AL
EXTERIOR & INTERIOR CARE — 3
Sealant Replacement:
Carefully remove sealant that is cracking,
fl aking, bubbling, peeling or pulling away from
the surface. The area underneath will need to be
cleaned and dried before applying new sealant.
Applying new sealant over a dirty or moisture
laden surface will not allow proper adhesion.
Sealant application may require simple hand
tools and paper towels or rags for cleanup.
Some sealants may be labeled hazardous or
require chemicals for cleanup. Follow all of the
manufacturer's warnings and precautions when
dealing with these substances.
WARNING:
Some sealants may be labeled hazardous
or require use of petroleum distillates
for cleanup. Use proper precautions as
suggested by the sealant or chemical
manufactures. Use of protective eye wear,
gloves, respirator or open ventilation
may be required. Use judgment when
working with chemicals. If health limits
exposure to chemicals or inhibits skills
or abilities, employ a qualified service
technician to perform the tasks.

Sealant Types

:
Acryl-R ®
Product Manufacturer Schnee-Moorehead
Part # 5509. Used on all roof openings such
as vents, skylights, roof-mounted antennas and
ladder roof mounts. Sealant should be applied
only where equipment bases meet the roof.
Acryl-R is generally available in a caulking tube.
Two colors are available - white and silver. Silver
is used on items mounted on the forward painted
area of the roof. White is used at all other points.
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