Arnett Roofing & Sheet Metal Works, Inc.
83 ORANGE STREET PHONE 829-3071
SAINT AUGUSTINE, FLORIDA 32084
TO St. Augustine Historic Pres. Board JOB NAME Government House
King St. ADDRESS King St.
St. Aug., Fl. 32084 ARCHITECT
DATE August 25, 1982 DATE OF PLANS
We are pleased to submit an estimate on above named job for the following:
We propose to install a new built up roof over existing flat roof
using the following Owens Corning specifications:
1. Repair all cuts, tears, splits, blisters, buckles, wrinkles,
fishmouths and otherwise deteriorated existing built up roof-
ing until a clean level surface is obtained.
2. Remove all existing copper flashing, taking care to maintain
it in a re-usable condition.
3. Apply a fiberglas 11/16 recover board.
4. Embed three (3) plies of fiberglas roofing felt into uniform
solid moppings of hot asphalt at a rate of 25# per 100 square
feet per ply.
5. Embed no less than 400# of white river gravel per 100 square
feet in hot asphalt using no less than 60# per square.
6. Water proof all parapet walls using Koppers KMM Aluminum
7. Install Marathon gravity roof vents, one (1) per every eight
Any replacement of bad wood will be performed at a cost/plus rate.
All copper scuppers, cap flashings, and copings are tobe cleaned and
All pitch pockets for HVAC are to be copper as is any other metal
All of the above labor, material and services to be performed for the sum of $...5-,.-3QQ...0..................................payable as follows:
The replacement of broken or loose tile, cleaning and patching of
gutter, reworking of vallys will be performed at a cost plus rate.
As further conditions to this estimate, it is understood that we will not be responsible for delays caused by conditions beyond
our control; that this proposal may be withdrawn by us if not accepted within ........... ......................... days from this date; that any
alteration or deviation from the above named items or either of them will become an extra charge over and above the sum quoted
above, which charge you will pay within ten (10) days after same has accrued; that this estimate when signed by us and accepted
and signed by you constitutes an entire and binding 'contract between us; and that if any obligation hereunder is enforced by
action at law or in equity then the party against whom such is enforced agrees to pay all costs including reasonable attorney's
fees. Payment upon completion.
ARN OFING & SH ET M WORKS, INC.
By...... ... ... .. ...............
ACCEPTANCE OF ESTIMATE
The foregoing terms, conditions and specifications are hereby accepted and agreed to as a valid and binding contract and
...................... hereby authorize you to execute same.
Dated this............ ........... day of ................................. A. D. 19............
ORIGINAL-To Be Returned to ARNETT ROOFING & SHEET METAL WORKS, INC.
DUPLICATE-To Be Retained by Customer
St. Augustine Historic Preservation Board
As per request an inspection was made of entire roof area
and related flashings of the Government House on August 5, 1982.
It was observed that there are two types of roofing systems pre-
sent. The majority of the roof area is covered by a Ludowice-
Celadon flat clay tile that is a discontinued line. It is nailed
over a heavy 40-45# felt underlayment with copper roofing nails
into 2 x 6 tongue and groove sheathing.
The flat or low sloped areas are covered by a coal-tar
pitch built-up slag surfaced roof.
All flashing systems are copper.
The tile roof appeared to be in relatively good shape. Due
to the pitch of the roof and the lack of protrusions, traffic
has been minimal, which is indicated by the lack of the usual
cracked or broken tile. Thanks to the copper nails and the ex-
cellent deck system the attachment of the tile is still very
secure. The copper valley was badly worn from traffic and indi-
cations of much patching was observed.
One area of tile that needs immediate attention is the small
section of porch roof that faces King Street on the east wing.
The roof has a pitch of 1" in 12" which is too flat for tile
even though it was installed over a built up underlayment. This
is evident by the vegetation that is growing between the tile.
BUILT UP ROOF
The built up roof was found to be in a completely deterior-
ated condition. There are many areas of exposed felt, blisters,
and delamination of plies.
The base flashing system at juncture of roof and verticle
surfaces has completely deteriorated and provides little or no
THE FLASHING SYSTEM
Being copper, the metal flashings system still is sound,
with the exception of the valleys. Due to traffic and contraction
and expansion the valleys have evidence of many crimps, pinholes,
The entire roof drainage system of this building is either
hindered, completely stopped up or nonfunctional. 80% of the water
leaving the roof of the building has had to seek a new avenue of
evacuation other than the one originally intended. All the gutters
were completely full of water or debris. All collector heads were
completely stopped up forcing water back thru the scuppers causing
a buildup of water on roof to reach 8" to 10" in depth. Being
copper the drainage systems are structurally sound but suffer
from neglect. Much of the stoppage is resulting from the growth
I recommend the following:
BUILT UP ROOFING
I think the most economically feasible way to approach this
area is with a recover system that is guaranteed by one of the
major roofing manufacturers such as the Owens Corning R-303-ICD
systems. These are smooth coated systems which will result in
Due to the good condition of the majority of the tile roof I
think a patch and repair situation is the most feasable. I recommend
1) Remove tile from low-sloped porch roof on south side and
install a smooth coated built-up roof system. Since original tile
is no longer available, these tiles can be used to repair damaged
tile on remainder of roof.
2) Rework copper valleys by completely removing metal and related
tile, installing new underlayment, install new copper valleys
and reinstall adjoining tile.
3) Carefully check entire roof area, reinstalling loose tile and
replacing cracked or broken tile.
Completely check all chimney flashings, metal crickets, wall
flashings, baseflashings, pitch pockets and any roof related
flashing. Any joints that show signs of splitting or separations
should be re-soldered or tightened in an acceptable manner.
Clean all gutters and downspouts, collector heads, and conduc-
tors, roof drains and scuppers. Re-solder or caulk all splits or
separations. Replace any crimped or damaged metal that will re-
strict water flow.
I think a complete roof maintenance program would be one of the
most beneficial factors in maintaining a good water tight condition
on this structure and extending the life of this roof. All the prob-
lems observed could have been prevented if caught in their early
stages of their deterioration and kept interior damage to a minimum.
Since this type of roof maintenance will be mostly a "labor only"
situation I think the best economical approach would be cost plus.