Untitled - National Roofing Contractors Association

. Establish provisions for on-site monitoring after the
work is completed.
If changes in these conditions are desired, the party requesting
the change should:
. Give written notice of the desired changes to all
parties.
. Secure written agreement to the changes from all
parties.
II. STORAGE AND HANDLING
1. All roof systems should be property stored in a dry
location before application.
2. When materials are stored outside, they should be
placed on platforms that are raised off the ground
or roof deck, and they should be covered with waterproof
coverings (some which may be shrink~pped
coverings) that have been properly secured. Coverings
that are "breathable" (such as canvas) are
preferred.
3. All roll materials should be stored on end to prevent
them from becoming deformed or damaged.
4. It is recommended that roofing materials be delivered
to the job site just before roof installation when
possible or stored in closed vans.
5. Roofing bitumens may be stored unprotected on the
ground. However, moisture, dirt, snow or ice should
be removed from roofing bitumens before they are
heated.
6. Lids should be replaced on cans of material stored
on the job site.
7. Water-based materials should be protected from
freezing.
8. Insulation materials should be handled with care.
9. Some insulation materials are extremely light and
must be weighted in storage to prevent wind damage.
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III. TEMPORARY ROOFS
Frequently, construction pressures lead to the inStallation
of roofing materials during unsuitable weather conditions
or ahead of construction schedule. In addition,
these pressures sometimes cause roofing materials to
be installed before wood blocking, curbs and penetrations,
and prior to the erection of walls, all of which may
cause roof problems. As an effective means of dealing
with the problems caused by construction pressures, a
temporary roof is recommended to allow the application
of the specified roof membrane in suitable weather and/or
to allow other trades to complete their work before the
permanent roof is installed.
The temporary roof specification (the type and number
of plies) will depend on the watertight integrity required
for the building and the length of time before the permanent
roof will be installed. (After suitable repairs are
made, a temporary roof may be used, if desired, as a
vapor retarder in the permanent installation.) Generally,
if roof insulation is used in the temporary roof, it should
be removed prior to the installation of the permanent system,
because any moisture sustained from damage could
be retained in this insulation, and damage to the permanent
roof system could result.
If a temporary roof is to be used, the specifICationshould
positively state:
. That a temporary roof will be required
. The type and specification of temporary roof to be
used
In addition, consideration should be given to having the
cost of the temporary roof itemized in the quoted price.
If there is doubt about the necessity for a temporary roof,
it can be bid as an additional alternate on a per-squarefoot
basis. The decision to use a temporary roof, and over
what areas it is to be used, can then be made during
the construction period as weather and construction
schedules dictate. The additional cost of a temporary roof
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