sappolloni
(Steven Appolloni, hi7859)
April 2, 2014, 10:25pm
1
Home built in 1991, the previous owner that is selling the house installed a metal roof this year, and just was permitted and closed by the county. While up in the attic I seen 8D nails spaced 6 inchs apart, but also staples where seen as well in certain areas, what should I select, A or C.
mmeeker
(Michael Meeker, CMI)
April 2, 2014, 10:32pm
2
In that case it was likely originally staples now you see 8D and it beeps every 6 or less and it was re-roofed so…8D every 6X6=…I know you know that one
evandeven
(Eric Van De Ven, CMI)
April 2, 2014, 11:17pm
3
sappolloni:
Home built in 1991, the previous owner that is selling the house installed a metal roof this year, and just was permitted and closed by the county. While up in the attic I seen 8D nails spaced 6 inchs apart, but also staples where seen as well in certain areas, what should I select, A or C.
I would go with the 8D nails as they weren’t a requirement in 1991.
Here is a roof redone in 2006…
btoye
(Bradley Toye, CMI)
April 2, 2014, 11:51pm
4
Man, you need a new camera…
@Steve , a retrofit trumps the old fastening method, same with roof to wall connections.
evandeven
(Eric Van De Ven, CMI)
April 3, 2014, 12:35am
5
btoye:
Man, you need a new camera…
@Steve , a retrofit trumps the old fastening method, same with roof to wall connections.
Noting wrong with the camera…something went wrong when they got uploaded.
After contacting the building department in PSL, it appears a few roofs “slipped through the cracks” and got renailed with staples. This is one of them.
btoye
(Bradley Toye, CMI)
April 3, 2014, 1:22am
6
You do know that renailing the decking was not required in 2006, right? That does not look like a renail.
evandeven
(Eric Van De Ven, CMI)
April 3, 2014, 2:25am
7
It was required in 2004 in several cities in Broward and Palm Beach counties.
Here is one of many roofs. This was put on in December 2005. There are plenty more.
The guy at the PSL office couldn’t remember if it was 2004 or later. This roof was done in March 2006. I know it was in the 2007 building code.
btoye
(Bradley Toye, CMI)
April 3, 2014, 2:35am
8
I keep forgetting you guys play by different rules down there. In the rest of the state, renailing went into effect 10/01/2007 for existing decks. The 8d - 6/6 code for new builds was in effect way before that.
evandeven
(Eric Van De Ven, CMI)
April 3, 2014, 10:41am
10
And, the actual question about the renailing was, when did staples become no longer accepted. The PSL building department wasn’t sure.
btoye
(Bradley Toye, CMI)
April 3, 2014, 11:45am
11
Right after Andrew and the next code cycle - 1994. Went to 8d - 6/12 with 6/6 nailing on certain zones of the roof.
evandeven
(Eric Van De Ven, CMI)
April 3, 2014, 11:52am
12
That is what I thought, but I haven’t been able to find an exact reference which states, “staples are not permitted”.
I know the 1996 code changed the requirement for the nails and pattern, but I don’t remember seeing anything about staples not being allowed. It also addresses reroofs which even then, required to be renailed if taken down to the decking.
29 - 16
ALLOWABLE SPANS FOR WOOD-BASED STRUCTURAL-USE PANEL
ROOF SHEATHING
Panel Maximum Span If Maximum Span
Identification Block or Other Without Edge
Index (2) Edge Supports Support
32/16… 32" …28"
40/20… 40" …32"
48/20… 48" …36"
Notes: (1) Values apply to sheathing grade, C-C and C-D panels.
(2) Span Rating appears on all panels listed in Footnote 1)
( 1) Fastening of up to and including 19/32 inches roof sheathing panels shall be based on accepted methods of engineering practice and shall be clearly identified on the design drawings, but in no case shall the roof sheathing panels be fastened to the supporting structural member with less than 8d common nails spaced six inches on center over all supports, including the blocking required in Sub-section 2909.2
Nail spacing over gable ends shall not exceed four inches on center.
( aa) Nails shall be hand driven 8d common nails ( 0.131" diameter by 2½" long with a 0.281" diameter full round head) or power driven 8d nails of the same dimensions (0.131” diameter by 2 1/2 “ long with a 0.281” diameter full round head). Other fasteners may be permitted when the Architect or Professional Engineer specifies all fastener dimensions, spacing, penetration, and orientation.
(2) Fastening of roof sheathing panels with a nominal thickness in excess of 19/32 inches shall be based
on accepted methods of engineering practice and shall be clearly identified on the design drawings, but in no
case shall the roof sheathing panels be fastened to the supporting structural member with less than 10d common
nails spaced no more than six inches on center over all supports, including the blocking required in Sub-section
2909.2(c). Nail spacing over gable ends shall not exceed four inches on center.
(aa) Nails shall be hand driven 10d common nails (0.148" diameter by 3" long with a 0.312"
diameter full round head) or power driven 10d nails of the same dimensions (0.148" diameter by 3" long with
a 0.312" diameter full round head). Other fasteners may be permitted when the Architect or Professional
Engineer specifies all fastener dimensions, spacing, penetration, and orientation.
(d) DIAPHRAGM BOUNDARIES: All roof sheathing acting as a diaphragm shall be attached to a
minimum 2 inch thick nominal member with its depth equal to or one size greater than the intersecting top
chord. This shall be achieved with a continuous structural sub-fascia, fascia or blocking between framing
members where a soffit is provided and shall be effectively nailed to said structural sub-fascia, fascia or blocking
at 4 inches on center with nails as required for the appropriate thickness of sheathing.
(e) When existing roofs are reroofed to the point that the existing roofing is removed down to the sheathing,
the existing roof sheathing shall be renailed with 8d common nails (0.131 diameter by 2½" long with a 0.281
diameter full round head). Nail spacing shall be six inches on center at panel edges, six inches on center at
intermediate supports and where applicable four inches on center over gable ends and sub-fascia. Existing
fasteners may be utilized to achieve such minimum spacing. See Sub-paragraph 3401.1(b)(5) and Paragraph
3401.8(h).
(f) Roof sheathing for heavy timber construction shall comply with Sub-section 2906.12.
2909.3 STORM SHEATHING: Exterior stud walls shall be sheathed to resist the racking load of wind as set
forth in Section 2309 of this code, and the concentrated loads that result from hurricane generated wind-borne
debris as set forth in Section 3501, and shall be any of the following types:
(a) Tightly fitted, diagonally-placed, boards not less than 5/8-inch thickness, nailed with three 8d common
nails to each support for 1" x 6" boards and four 8d common nails for 1" x 8" boards.
) g p g g six inches on center over all supports, including the blocking required in Sub-section 2909.2(c). Nail spacing
diameter round head) or power driven 8d nails of the same dimensions ( 0.131" diameter by 2½" long with
) y g
r full r ) p y g
a 0.281" diameter full round head). Other fasteners may be permitted when the Architect or Professional
Engineer specifies all fastener dimensions, spacing, penetration, and orientation.