HomeMy WebLinkAbout5G - Reroofing City Hall
CITY COUNCIL AGENDA REPORT
MEETING DATE:
AGENDA#:
PREPARED BY:
AGENDA ITEM:
MAY 4, 1998
S;'I:A
ROBERT D. HUTCHINS, BUILDING OFFICIAL
CONSIDER APPROVAL OF RESOLUTION #98-XX
APPROVING RE-ROOFING THE SOUTH ADDITION
OF CITY HALL AND REPLACING THE EXISTING
ROOF
DISCUSSION:
History
The existing south addition to City Hall was constructed in
1983, approximately fifteen years ago. It has a rubber
membrane roof with ballast applied to it. The original
building portion of City Hall (north side of the building) was
re-roofed in 1996. The south addition was not re-roofed at
that time because of a lack of funds.
Current Circumstances
The existing roof is now leaking, causing water damage to
the interior area of the building. A fifteen year life span for a
flat roof is typical.
The Issues
The current rubber roof is now leaking causing damage to
the interior of the building. In 1997, we spent $1,500.00 to
patch this roof to stop the leaks. Because there are a number
of drainage ways on this roof, there is a considerable
opportunity for leakage. Three roofing contractors were
asked to provide quotations for the replacement. All the
contractors agreed that the roof should be replaced, not
patched.
There have been three bids received. All bids are based on
providing a Type VI GAF Materials Corporation build up,
hot mopped GAF glass roof with a twenty year NDL (no
16200 Eagle Creek Ave, S,E" Prior Lake, Minnesota 55372-1714 / Ph, (612) 447-4230 / Fax (612) 447-4245
AN EQUAL OPPORTUNITY EMPLOYER
dollar limit) GAF warranty which includes material and
labor. All contractors are insured and have reference lists.
The bids include the following:
. Tear off the existing roofing down to the plywood.
Clean up and haul away all debris from the premises.
. Replace any deteriorated decking (if any) at a separate
price based on labor and materials, above the contract
price. Price for labor and materials would be $1.55 per
square foot.
. Mechanically fasten one layer of 2.7" isocyanurate roof
insulation over the entire roof surface.
. Mop one layer 1/2" wood fiber roof insulation over the
entire roof surface.
. Install four layers of Type VI fiberglass felt, running all
felts up onto the base flashings. Each layer of felt will be
mopped in solid with hot asphalt at a rate of no less than
twenty-five pounds per square inch.
. Flash all walls, curbs, chimneys, etc. with an additional
layer of modified bitumen 160 mil flashing material,
fasten and secure.
. Install new pitch pans to replace the existing pitch pans.
. Install new galvanized sheet metal plumbing stacks of
two piece construction with lead tops.
. Install one new pre finished sheet metal over flow scupper
where existing is now.
. Flood coat the entire roof surface with a final layer of hot
asphalt at a rate of 60 lb. per 100 sq. ft. and embed
washed roofing gravel in asphalt while still hot at a rate
of500 lb. per 100 sq. ft.
Items the City would be responsible for are as follows:
. Preparing and repairing the west side yard due to the
weight of the large trailer that is used to store the tear-off
roof. I have talked to Paul Hokeness, Director of Parks
& Recreation about having his department repair the
yard.
. Radio antenna and equipment attachment to the roof.
Of the three roofing contractors bidding on the project,
SELA Roofing and Remodeling, Inc. had low bids of
$19,480.00 for a re-roof with a fifteen year NDL GAP
warranty and $19,730.00 for a re-roof with a twenty year
, ,.
CONCLUSION:
FISCAL IMPACT:
ALTERNATIVES:
RECOMMENDED
MOTION:
REVIEWED BY:
NDL GAF warranty.
The existing roof covering should be replaced with a new
roof covering. Since we do not know when or if City Hall
will be replaced, the twenty year warranty is recommended.
Cost Recovery Analysis
The existing roof is now leaking causing water damage to the
interior of the building. The original existing roof was
installed in 1983 and is fifteen years old. It's life span is
now complete. Replacing the roof covering will prevent
structural and aesthetic building components from further
deterioration.
Budget Impact
The funds for installing a re-roof are not in the 1998 budget.
The Council would have to appropriate the funds from the
1998 Contingency Fund. That account balance is
$100,000.00.
There are three alternatives for the City Council to
consider:
1. Approve the expenditure of $19,480.00, including a
fifteen year warranty, for re-roofing the south addition of
City Hall and replacing the existing roof.
2. Approving the expenditure of $19,730.00, including a
twenty year warranty, for re-roofing the south addition of
City Hall and replacing the existing roof.
3. Deny the expenditure of funds for specific reasons and
provide Staff with direction.
Motion and second as part of the Consent Agenda to approve
Resolution 98-XX appr ng re-roofing of the south addition
of City Hall at a cost to exceed $19,730.00 to be drawn
frOif:] gene undo
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RESOLUTION 98-XX
RESOLUTION APPROVING RE-ROOFING THE
SOUTH ADDITION OF CITY HALL AND
REPLACING THE EXISTING ROOF
MOTION BY:
SECONDED BY:
WHEREAS, the current existing roof on the south addition of City Hall, is now leaking
and needs replacement;
WHEREAS, the Staff received three bids on re-roofing with fifteen and twenty year
warranties;
NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF PRIOR
LAKE, MINNESOTA, to approve expenditure of $19,730.00 to SELA Roofing and
Remodeling, Inc. to re-roof the south addition of City Hall with a twenty year
warranty; and,
BE IT FURTHER RESOLVED that the funds for this work be drawn from the
Contingency Fund.
Passed and adopted this 4th day of May, 1998.
YES
NO
Mader
Kedrowski
Petersen
Schenk
Wuellner
Mader
Kedrowski
Petersen
Schenk
Wuellner
{Seal}
Frank Boyles
City Manager
City of Prior Lake
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