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HomeMy WebLinkAboutDETAIL MANUALSCANNED GulfCoast SUPPLY & MANUFACTURING Figure 1 The Horseshoe Beach office (left) and manufacturing faci conditions. Both panels and tr using state-of-the-art compute found at our facilities in three to assure uniformity and consi manufacture. Panels are roll-fi specified by customers in eith, any of more than twenty color gauge, 26-gauge, and 24-gaug ready for either customer pick ery (customers should call abc 24-gauge metal). Your Gulf C, is waiting to assist you in mak for your particular roofing nee Gulf Coast's Gulf Rib® p from AZ-50 (painted) or AZ-5 Galvalume) grade 80 coil sto bare Galvalume finish is not Figure 3 The Gulf rib panel If Coast Supply i are fabricated zed equipment ,cations in Florida, ency in product med to the lengths Galvalume or of painted 29- high-tensile metal, or on -site deliv- t availability of tst representative is the best choice .els are fabricated (bare (grade 50 for 24 GuIfCoast SUPPLY & MANUFACTURING The Gulf Coast Gulf Rib® Roofing Panel Gulf Coast Gulf rib® panels are a strong, durable, economic, and attractive answer to the growing demand for metal roofing needs in Florida and southern Georgia. Extremely versatile, they are suitable for homes and businesses as well as agricultural and utility buildings Gulf Rib® panels provide a 36- inch coverage with % inch ribs on nine -inch centers, and utilize an anti -siphoning channel to provide protection from severe weather Figure 2 The 4 locations of Gulf Coast Supply. y durable and cost effective, but offers reflectivity so valuable here in the South. The paint system employed on painted products offers optimum exterior protection plus superior resistance to corrosion and ultraviolet radiation. While bare Galvalume carries a 25-year f Y4., limited coil manufacturer's finish warranty, �<--9, most painted metal carries a 40-year war- ranty. Both painted and unpainted are of the highest known quality in the industry. Gulf Coast also stocks a complete line of fasteners, sealants, and other accessories to meet every need of both the do-it-yourself homeowner and the roofing contractor. A complete line of both in -stock and custom-made flashings and trims are available in all colors as well. GULF RIB' DETAIL:MANUA'L Gulf Coast roofing panels require a certaii Florida Building Code allows a minimum pitcl and sealant are applied to the laps to prevent w Lap screws and sealant are optional when the pitc inches of rise for every 12 inches running horizor and the more necessary, also that sealant be used recommendations for your particular- roof pitch, a pitch. Roof I Oil -canning is a wave -like, rippled appea!, been installed on the roof. Any irregularities in tl plywood, uneven trusses, poor application of und� can promote oil -canning. Care should be taken the panels. See page 6 for more details. ! I f Pitch degree of pitch to ensure proper water drainage. of 2/12 for Gulf Rib" panels as long as lap screws ter from siphoning over the ribs (see Fig. S on p. 4). . is 4/12 or greater (4/12 pitch means that there is 4 ally). As a general principle, the less steep the roof, all side -laps. Consult our representative for d about roofing options if you have less than a 2/12 separation ice extending up the length of the panel after it has roof, including uneven plywood joints, warped layment, the use of button caps with felt paper, etc., provide a flat, uniform surface on which to attach Roof Application Panel installation should begin at the gab,e end of the roof opposite the prevailing rain -bearing wind (this will provide added assurance against wind -driven rain being forced under the laps). Measure one panel width in from the roof edge. At this point chalk a line from ridge to eave. Place the leading edge of the first -panel along this line. It is extremely important that this panel be laid square to the eave and ridge so that the remaining panels will line up square on the roof frame. It is wise to have a person at the eave and at the ridge to ensure that the proper panel coverage is being maintained across the roof. Also be sure that the panels are properly side -lapped (see fzg. 7 on page 7). In applications where end -lapping is necessary, the upper panel on the slope should lap over the panel that is lower on the slope by about 12 inches. Lesser roof pitches require a greater amount of panel overlap. All end -lap applications should use two horizontal rows of butyl sealant tape across the panel and proper fastening to provide a maximum water seal. An overhang of 2 to 3 inches on the eave �is recommended to provide a drip edge, while only 1 inch overhang is necessary where gutters are used. The open panel ribs at the eave can be sealed with inside closures. For maximum weather -tightness, a row of butyl tape can be applied above and beneath closure material. Trimming and Cutting Steel Panels The best device for cutting steel panels across the profile is either hand snips or a nibbler. Nibblers, and especially Carborundum blades on electric saws, however, do have a tendency to either leave hot metal particles that can burn paint surfaces or to leave rust marks on panels and trim. The same is true of any filings left on the roof caused by the application of screws. Care should be taken to brush all such particles from roof surfaces after application. To cut panels lengthwise: Note carefully where the panel is to be cut, and, using a straightedge, score deeply down the length of the panel with a sharp -pointed utility knife. Folding the panel along the score mark, and bending back again if necessary, should produce a clean break in the panel. CAUTION! clean all metal shavings and particles off of roof to avoid unsightly rust stains Sidewall Flasihnng� } Roll Lite Door Transition Flashing (p.10) Figure 4 Roofing trims and flashings are named by the location or function of that particular piece on the building. Gu'IX06 t SUPPLY & MANUFACTURING Ridge cap M® PHI Panel lan detail .8) Lap Screw Apply sealant to lap overlap �► purlin bearing eg' decking Figure 5 Butyl tape or caulk is required when the roof pitch is 3/12 or less, with lap screws applied every 2 feet to maintain water -tightness of the lap. On pitches greater than 3/12, lap screws and butyl tape are optional. For more details on screws, see pgs. 6 and 7. - " M GULF RIB"" DETAIL MANUAL Ordering Roof Panels and Screws Care should be taken.to order panels corrective measures after purchase. Panel if a vented ridge is desired, and should extend edge (except as noted on pg. 3 concerning g the upper portion should be ordered short to diagram on p. 10). The Gulf Coast sales per, specific to their particular roof the correct length to avoid having to make ;ths should fall 2 to 3 inches short of the ridge when to 3 inches past the eave to allow a sufficient drip ers). When a roof transition is involved, panels of low placement of the transition flashing (see mel are ready to assist customers with information Specially-washered screws applied through the flat of the metal is the most recommended method used to attach roofing panels. 1-inch screws can be used if penetration of only 3/4 inch is either necessary or desired; otherwise, 1% inch screws are usually recommended. 2% inch screws are also available, and are often used by those who adhere to through -the -rib fastening, and for ridge -cap application. See pages 6 and 7 fori more information on screw spacing and ordering. Ordering and Applying Trim The most common flashing for metal roofing is the ridge cap, which is used at the peak of a roof where two opposing roof slopes join. Other flashings include transition flashing, end wall and sidewall flashings, and valleys (see diagram on right for application). Eave trims include gable flashing and eave drip, either of which are often applied above fascia trim. When roof pitch exceeds 5/12 (a 5 inch rise in 12 inches), the slope of the roof should be mentioned when ordering ridge caps, endwalls, and eave drip. When a steeper roof slope meets a lesser slope, both slopes should be mentioned when ordering transition flashing. At the gable edge the use of gable trim adds to the appearance of the structure and protects the fly -rafter, and sidewall flashing is used where the side of a panel butts up against an adjacent wall. In either case, the installer should be careful to seal between the gable rake or sidewall and panel with butyl sealant tape, and to fasten the rake every 6" to 12" up the slope of the roof with the appropriate screws. If eave drip is used on the gable, the number of 90 degree eave drip should be specified separately from that used on the drip edge when ordering. To prevent penetration of water, insects, and debris at the ridge, outside closures should be inserted between the ridge cap and the top end of the panel. Screws are applied through the ridge cap, closure, and rib in at least every other rib of the panels. At least a 1'/2" (or preferably 2%") screw should be used for attaching ridge caps. Self -drilling lap screws can also be used to attach ridge caps. Keep Materials Dry! Paint and finishes of Gulf Coast panels ;and trim are designed to withstand severe rain and wet weather conditions. Neither paint, galvanized, or Galvalume finishes, however, are designed to be in continuous contact with water for long periods of time. Damage will result if uninstalled panels or trim are allowed to remain wet in storage. Be sure to store material that will not be installed immediately in a dry location. Wet material should be air-dried and re -stacked if installation is not planned right away. How to Figure and Apply Screws Gulf Coast Supply carries screws in 3 different lengths: 1 inch, 11/2 inch, and 2 'h inch. 1-inch screws will barely penetrate a 1 x4, but the 1'/z inch are the best all-purpose size.! I%- or 2%-inch screws are necessary for attaching ridge caps. I The table on the right can be used to figure approximate quantities! of screws for various purlin spacings and sizes of roofs. For 2-foot spacing between rows of screws, multiply the total linear feet of metal times 2.7 Example: your order is 1250 feet of Gulf Rib roofing. 1250x2.7=: Please confirm all estimates with yoi you placed your order. Codes allow re -roofing over shi provided the roof has been checked t Gulf Rib metal roofing can be se pine battens spaced on maximum 24' direct contact between pressure trf potential corrosion, Gulf Coast Sup CAUTION: Battens must be fas minimum 8d common or pneumatic i calculations according to ASCE 7-98 of ridge, eave, hip, valley, and gabl For solid decking, at least 15/32-ir center is required. If care is taken, metal roofing api quickly and accurately into the desire accurately in the proper locations on For panel lap details, see Figure Delivery policy Delivery charges apply department for details. �75 screws Gulf Coast representative when -d 0 0 w 0 > / :� GUIX06�t SUPPLY & MANUFACTURING Screw (nurlin) Snacin 12 inch 18 inch 24 inch 50 270 '1 180 135 .100 540 360 270 200 1080 .-720 540 1Figure MgLTWRib panel screw ;les without the use of battens calculation chart a licensed roofing contractor to insure levelness and pullout integrity. rated from the moisture barrier by minimum, nominal 1 "x3" yellow ;nters, or according to ASCE calculations where applicable. Since :ed lumber and metal roofing must be avoided in order to prevent y sells only untreated battens. ied to the roof deck with minimum #6 screws at 12" on -center, or two ils spaced 8" on -center, or one every 4" on -center (or by applicable Battens must be installed to support the entire width and length -nd trims. i structural plywood supported on rafters at a maximum of 24" on ication can be aided by pre -drilling panels, allowing screws to go spacing. Pre -drilling will work provided that pilot holes are placed anels. Purlin spacing must be uniform and carefully measured. on page 4. Gulf Coast Policies all orders where delivery is requested. Please consult your Gulf Coast sales Sales tax All orders picked up at Gulf Coast Supply, and all orders delivered within the state of Florida, are subject to state sales tax. Tax exemptions should be verified prior to delivery or customer pickup. Warrantied products A 40 year warranty applies to most material* manufactured from painted coil stock, and a 25-year warranty to Galvalume material. Ask for details. Indemnity All prices and designs are si Disclaimer While we have made every printing, or technical errors. Oil Canning —a fepeating, wave -like apl phenomenon in metal panels like Gu defect, nor a cause for rejection. See Return policy All panel orders and spe refundable once they are manufacture clean, resalable condition. For detail bottom of page, or call Gulf Coast Si to change without notice at accuracy in this manual, we are not responsible for typographic, arance in the length of the panel —is a common and often unavoidable Rib roofing that have large, flat areas within the panel. It is therefore not a 3 for details on how to avoid oil -canning. al order (non -stock) trims are considered the property of the customer and non- l. Standard trim and accessories are refundable providing they are returned in a go to www.gulfcoastsupply.com and click on "No Hassle Return Policy" at ply to ask specific questions about returns. .. ` M GuIfC®ast SUPPLY & MANUFACTURING Gulf Coast Gulf Rib° Roofing Panels Fastening Schedule for Various V ind Speeds - minimum 2:12 roof pitch . Wind Speed Zone 130 MPH 140 MPH 150 MPH 160 MPH Roof Fastener Fastener Size Attaching to: On Center On Center On Center On Center Zone Type (Spacing Spacing Spacing Spacing Zone 1 Woodgripo or #9-15 x 1'/z min.15132 24" 24" 24" 24" Woodzac ® I wood P y T e l yp T e l yP T e l yp T e l yp Zone 2 Woodgrip® or #9-15 x 1% min.15/32 24" 24" 24" 24" Woodzac ® plywood T e l yp T e l YA T e l Yp Type l YP Zone 3 Woodgripe #9-15 x 1'/Z min.15/32 ! 24" 24" 24" 24" Woodzac® plywood Type 2 Type 2 Type 2 Type 2 Fastener pattern Type 1 Type 2 Zone 2 a Eave a V .................... .......................... i......... ; . :...................................................................:... a -:---------------- Ridge -------------=- ...........:... Zone 1 Gable ne 3 Gen,er 0n,ringi Fastener pattern Fastener patterns Type 1 and Type 2 are shown at left, row spacings are shown in the table above, and roof zones are displayed on left below. Figure 7 shows a simple illustration of the patterns. Note that fastener pattern Type 2 is required at top, bottom, and end laps of each panel, as well as in additional areas according to which roof zone the fasteners fall in. Each "zone" of the roof has its own screw requirements. Dimension a is defined as 10% of the minimum width of the building, or 40% of the mean height of the roof, whichever is smaller; however, a cannot be less than either 4% of the minimum width of the building, or 3 feet. Figure 7 Screws should be placed on both sides of the ribs at both eave and ridge, to and on the overlap side of any panel laps. / N. GULF RIB"m ® GuIfCo6ft SUPPLY & MANUFACTURING t. Eave Drip & Fascia v � x FHA Style ED-3 Style. ;I S Eave drip Eave drip 1 vz h a f 7/16' 1 For custom eave drip, specify the Eave drip a Eave drip with fascia and inside closzere amount of the eave that will be Figure 8 Eave drip and fascia give a finished look along the drip covered (dimension "a"), and, for eave of the house, as well as providing protection for the steeper roofs, specify pitch . If materials they cover. The eave drip should completely cover the Fascia a fascia is desired, be sure that the top edge of the fascia. Inside closures, which seal off the open 1 dimension you order will be ribs of the panels, are optional. —.I b k— hidden by the eave drip. Smmary of Stock Trims and Flashings itom I cnorial ardor infnrmatian Ridge caps (RC-2) specify I pitch if less than 3/12,or greater than 6/12. Also available in large widths. Closures recommended. Eave drip (FHA, ED-3), 2 common styles. FHA style is pre -pitched for 3/12 to 6/12 roofs. For appearance or ease of application, order by either specific pitch or as gable trim (901). Gable flashings. Residential (EF-1), large (GR-2), and small (GR-1) rakes available. Use butyl sealant between rake and panel. Valleys (PV 1) speci�y pitch if greater than 7/12. Seal with universal foam closure mate ial. Open -hemmed valleys (PV 2) aid water -tightness. Sidewall (SW-1) Use butyl sealant between sidewall flashing and panel. Endwall (EW-1) Specify pitch if greater than 5/12. Seal with outside closures. Transition flashing Specify pitches of both roofs. Seal lower slope using outside closures and, if desired, inside closures on upper slope. Gu'lf Co6ft SUPPLY & MANUFACTURING The Ridge Cap is used to seal the point at which two upward slopes meet. This can be both along the ridge of the roof as well as a covering for a hip. Either woodgrip or self -drilling lap TEK screws are applied through the ribs of the metal. Since debris, insects, and blowing rain can find easy access under the ridge cap, closures are required to either completely or partially seal the opening. Closures under ridge caps come in 3 types: solid, vented, and hip tape. F1 Solid closures ("Outside Closures") are (ri the same width as the panels. They lock to under the screws that attach the ridge cap, air -tight barrier. ' :r in a row placed directly form a solid, water -tight, Profile Vent® comes in 50 foot rolls, is 3 inches, wide, and forms a water - retardant, insect resistant barrier that allows hot air to escape from the attic, and is superior to many more elaborate and expensive vent systems. Any length may be ordered. Hip closure tape (Peel and Seal) is a sticky, adhesive -backed metallic tape that seals the hip roof. It is 6 inches wide and comes in 33'/z foot rolls. Because it must be conformed to the rise and fall of the panel ridges, approximately 10% extra may be needed beyond the length of the hip being covered. �\ Figure 10 Pipe Boots provide a Outside 6„ / Profile Ventg water -tight seal around roof vents and come in a varietyof closure / or Versa -Vent® sizes. They seal with caulk and conform to the shape of the panel ribs. 'J �v`Lap or 2'/2" Woodgrip screw required RC-2 Standard 12-inch Ridge Caps are strong, economical and adequate for most of your roofing needs RC-1 style 12-inch Ridge Caps are also available in custom widths I a �I RC-2 style over -sized ridge caps are available with 18-inch coverage, or as a custom trim item in total widths (2 times "a") of 14-, 16-, 18-, 20-, 22-, and 24-inch Figure 11 As with the ridge cap, ithe ENDWALL FLASHING above is sealed using outside closures. Use EW-2 hemmed endwall when cornering endwalls with sidewall flashing, such as with dormers or chimneys. For custom end -walls, specify roof pitch andl dimensions "a" and "b" Transition Fla -shin' Ooo. The TRANSITION FLASHING p events leakage at the point where two different roof pitches meet. It must be sealed on the lower side with outside closures, and can be sealed underneath the upper panels withl inside closures. The similar GAMBREL FLASHING is used where the lower pitch is steeper than the upper. TF-1 Transition Flashing 3 closure 1<-a For custom transition flashing_specify the of the two roof slopes and, if necessary, d: "a" and "b". Gu'lf Coast SUPPLY & MANUFACTURING ® End -wall Flashing End -wall flashing is applied where the upward slope of a roof meets a wall. The wall side of the flashing can be covered with siding or counter -flashing, and outside closures are necessary to seal recommended)d) caulk (Solar between the = � flashing and the Lcaulk edge (order EW-1C) ol (used if endwall not panel. Roof slope 3 �� covered by siding) s h o u l d b e mentioned if roof exceeds 5/12 pitch. LEW-1 Stepped' Endwall 8 Figure 12 The transition flashing (above) and the GF-1 gambrel flashing (right) provide a continuous drainage where two slopes meet. Both seal with outside closures on the lower side. EW-2 Hemmed b Endwall i _a a = 4'/z" b=3" GULF RIBS" 'DETAIL MANUAL Gable dashing OPP- r,r-i styie Custom trim —specify a custom length for a or b. Standard dimensions — a = 3" b =� GR-1 style Custom trim —specify a custom ate' length for a or b. b Standard dimensions — a = 2 �s" b =23/8n Figure 14 Sidewall flashing is applied when the side ofl the roof butts up against an adjacent wall. The wall -side of the flashing can either be covered over with siding or sealed with caulk (order SW -IC). Butyl tape should be applied where the "foot" of the flashing attaches to the roof. View oJ ET--rg_aWe_Tr-zn_FUascia oar reiuove Figure 13 Gable flashing is used to trim the edge of the roofing panel at the gable end of the roof. It should match the eave drip that extends along the drip edge of the roof. If the panel is allowed to hang over the gable end, eave drip can be used instead. Butyl tape between the trim and panel eliminates leaks. ® Side -wall Flashing caulk (Solar Seal' recommended) � caulk edge (order SW-1C) 4 A (used if sidewall not covered by siding) 3" + 3 Butyl tape T 5" '►I SW-1 _ Custom trim —specify a custom length for a or b. 1Li�i Standard dimensions — a = 3" b=3" Preform Vall Install panels 2 to 4" from diverter PV 1 style PV 2 style Two basic styles of valley are For custom valleys, specify di Gulf Coast Gulf Oe' Gu'lf CoaKt SUPPLY & MANUFACTURING Figure 15 Pre -formed valleys use a diverterto prevent water from rushing under panels on the opposite side, while meanwhile channeling water off the roof. Expanding foam closures are often used to assure a good seal. trims associated with Gulf Rib roofing panels GULF RIB,m DETAIL MANUAL IN :V-11 011 MIJ i GR-2 Outside Corner The GR-2 Rake and Corner can be used as a gable trim or a corner for metal -sided buildings. As an alternative, the smaller EF-1 or the GR'l (both on p..l 1) can also used as gable rakes, and the PC-5 (below)or the GR-1 as corners. Customizing rakes or corners is often necessary due to their landing on a panel rib. Both the GR 2 and the IS-2 can be ordered as custom trim items by specifying custom dimensions "a" or "b". Be sure to take into account the 3/4" "head space" when figuring custom dimensions. 14­3"_ j i panel The PC-5 flat corner , works best on smaller ;t: ' ; structures, and where ilil,l the panels are running o�rJoutside horizontally. It can be I /'closure sealed with outside closures. PC-5 Figure 17 When used as corner trim, the GR-2 straddles the ribs of the panels where they meet at the corner of the building. The Gulf Rib outside corner also serves as a gable rake (see below). The inside corner (IS-2) has similar dimensions but with a reverse middle bend. ® GR-2 Gable Rake 6" 10. r� 1/11 Figure 18 When used as a gable rake, the GR-2 runs parallel to the ribs of the roof panel, and is attached with screws running through the ribs of upright siding. As with the EF-1 residential rake, the roof side can be sealed with butyl sealant. i 4 sia" I I IN111 III II I III Figure 19 The drip cap is commonly used to trim out the bottoms of panels over doorways and windows, and occasionally takes the place of base drip. J-channel is used to cap raw panel edges where run-off is not a problem, and is most commonly used to trim around the bottom, sides, and occasionally the top of windows and doors, and also to cap the top sides of skirting. Base Drip 00, Base drip 1/411 G6i1Cozk\t SUPPLY & MANUFACTURING Drip Cap and J-Channel DC-1 Drip cap 5/8" capping the panel end ® JC-1 J-channel CD i panel 7/a" capping._ panel edge Figure 20 Base drip seals off the bottoms of panels at the floor level, where it helps to prevent the entrance of rodents and insects, as well as a base for the setting of panels. GULF RIB'm ,DETAIL MANUAL Gutters 00, Gulf Coast Supply produces 29-, 26-, and 24- gauge gutters in either 5- or 6-inch widths (depth is approximately equal to width). All gutters should be ordered specific to the pitch of the roof. Downspouts are available in 3 "x4" (for 5- inch gutters) and 4"x4" (for larger gutters). End caps should be ordered at the same time as the gutters to assure a custom fit. Special hangers fit into the panel rib and under the gutter lip. Panels should extend no more than 1" to 1'/z" inches beyond the eave on which gutters are planned. ' lap �-5 or 6"�Ar- Gutter hangers fit inside panel rib and under lip of gutter (apply at least one per panel) and are attached with lap screws or rivets. Downspouts in excess of 10 be made in 2 sections. L7 21 Exposed view of gutter showing gutter hanger ant, downspouts, and end caps. Hangers employ lap and end caps are best attached with rivets. lo—Outer <- Inner Outer y- Inner - Oute Inner and outer gutter sections (marked `9' and "O") alternate along the eave to assure ease of application and gutter appearance. in length must ' I � .. f Figure 22 Sliding door track covers fit over the door track and under the panels to hide the track, assure a neat appearance, and shed water over the door. Do he ® Track Covers 5" TC-1 sliding door track cover G61iCozi'-�'k SUPPLY & MANUFACTURING Ridge caps (pg. Eave drip (pg 8) Valleys (pg 12) Gable rakes (pg. Wall flashin (pgs. 10 - 1 Transition & gambrel flashings (pg. 10) A ARM Comer trims (pg. 13) Door &window trims (pg. 14) Base drip (pg. 14) �"-----"'� Pipe Boot (pg. 11) -=-•--- Electrical Boot Reflective bubble insulation Inside Closures00 Outside Closures ® Flex-o-vent ® Profile Vent Expanding Foam Peel and Seal Touch-up Paint ISIDTEK Lap TEK Butyl Tape Titebond® Woodgrip Screws TEK screws WoodZac screws WoodMac screws Guide to Misc. Accessories item application pipe boot Fits ovea� vent and heat pipes. Available also in heat -resistant boots. boot Fits around pipes with inaccessible tops (such as weat_herheads). _electrical - ,_ outside closures _ _ Required to seal under ridge caps and transition and endwall flashings. inside closures Seals under panels, particularly on the eave. ure material surpassing many other venting systems. Profile Vent, Flex-o-Vent® Vented c�.os_ expanding foam __ Compressed adhesive foam expands to seal•between valleys and panels. Peel and Seal Seals hips under hip caps. Also, a general purpose sealing tape (6" wide). touch-up paint _ Hides scratches and mars encountered in installation. Over 20 colors. butyl tape General 1purpose low-cost sealant, used on panel laps and under trim. Titebond®_ _ A superior:general purpose caulk for all joints. 'Matches panelc_olo_rs._'_ _ Low profile insulation Greatly reduces radiant heat when installed under panels. Woodgrnp screws Used in all applications attaching metal to wood. 1 2 , l , 2h sizes. _ TEK screws Self -drilling TEK screws for metal purlins. Lap TEK screws draw together joints and attach trim. ZAC® screws "Lifetime" screws; 11/z", 2%", threaded for wood; self -drilling available. Version 01-26-16