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HomeMy WebLinkAboutDETAIL MANUALSUPPLY & MANUFACTURING y�4\ Figure 1 The Horseshoe Beach Gulf Coast Supply office (left) and manufacturing facility. conditions. Both panels and trim using state-of-the-art computeriz found at our facilities in three to to assure uniformity and consiste manufacture. Panels are roll-fo specified by customers in either any of more than twenty colors o gauge, 26-gauge, and 24-gauge 1 ready for either customer pickup ery (customers should call about 24-gauge metal). Your Gulf Coas is waiting to assist you in making for your particular roofing needs. Gulf Coast's Gulf Rib® pane from AZ-50 (painted) or AZ-55 Galvalume) grade 80 coil stock bare Galvalume finish is not onl Figure 3 The Gulf rib panel highest known quality in the in( Gulf Coast also stocks a ci every need of both the do-it-yol both in -stock and custom-made are fabricated ed equipment cations in Florida, ncy in product rmed to the lengths Galvalume or f painted 29- high -tensile metal, 1Ior on -site deliv- availability of representative the best choice are fabricated 50 for 24 .. G61icoz 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. durable and cost effective, but offers reflectivity so valuable sere 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 limited coil manufacturer's finish warranty, 9"-->1 T most painted metal carries a 40-year war- ranty. Both painted and unpainted are of the to line of fasteners, sealants, and other accessories to meet homeowner and the roofing contractor. A complete line of inizs and trims are available in all colors as well. (= GULF RIB'":DIETAIL MAN'UAL Installation of Panels Roof Pitch Gulf Coast roofing panels require a certain, degree of pitch to ensure proper water drainage. Florida Building Code allows a minimum pitchy of 2/12 for Gulf Rib® panels as long as lap screws and sealant are applied to the laps to prevent water from siphoning over the ribs (see Fig. S on p. 4). Lap screws and sealant are optional when the pitch is 4/12 or greater (4/12 pitch means that there is 4 inches of rise for every 12 inches running horizontally). As a general principle, the less steep the roof, and the more necessary also that sealant be used at all side -laps. Consult our representative for recommendations for your particular roof pitch, and about roofing options if you have less than a 2/12 pitch. Roof Preparation Oil -canning is a wave -like, rippled appearance extending up the length of the panel after it has been installed on the roof. Any irregularities in the roof, including uneven plywood joints, warped plywood, uneven trusses, poor application of underlayment, the use of button caps with felt paper, etc., can promote oil -canning. Care should be taken to provide a flat, uniform surface on which to attach the panels. See page 6 for more details. Roof Application Panel installation should begin at the gable 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 fig. 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 Residential Tri Seep. 12 for Siding ,Gable trim Sidewall Roll Lite Door Transition Flashing (p:10) Figure 4 Roofing trims and flashings are named by the location or function of that particular piece op the building. G 6 li'C�Woz t SUPPLY & MANUFACTURING Ridge cap .8) r anvi is uv, tau Lap Screw Apply sealant to lap overlap AL f purlm bearing leg . 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. � ri. GULF R:IB' DETAI'L,MANUAL Ordering Roof Panels and Screws Care should be taken to order panels of the correct length to avoid having to make corrective measures after purchase. Panel lengths should fall 2 to 3 inches short of the ridge when a vented ridge is desired, and should extend 21 to 3 inches past the eave to allow a sufficient drip edge (except as noted on pg. 3 concerning gutters). When a roof transition is involved, panels of the upper portion should be ordered short to agHow placement of the transition flashing (see diagram on p. 10). The Gulf Coast sales personnel are ready to assist customers with information specific to their particular roof. Specially-washered screws applied through the flat of the metal is the most recommended method used to attach roofing panels. 1 -inchi screws can be used if penetration of only 3/4 inch is either necessary or desired; otherwise, 1'/2 inch screws are usually recommended. 2%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 for 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 alsteeper 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 V2" (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. IOW t® Figure and Apply Gulf Coast Supply carries screws in 13 inch, and 2 '/z inch. 1-inch screws wi 1'/2 inch are the best all-purpose size). necessary for attaching ridge caps used to figure approximate quantities spacings and sizes of roofs. For 2-fo screws, multiply the total linear feet { Example: your order is 1250 1250x2.7=3 Please confirm all estimates with yo you placed your order. Codes allow re -roofing over shir provided the roof has been checked bI Gulf Rib metal roofing can be sej pine battens spaced on maximum 24" direct contact between pressure tre potential corrosion, Gulf Coast Supp CAUTION: Battens must be fast minimum 8d common or pneumatic n calculations according to ASCE 7-98) of ridge, eave, hip, valley, and gable For solid decking, at least 15/32-in( center is required. If care is taken, metal roofing app quickly and accurately into the desire( accurately in the proper locations on 1 For panel lap details, see Figure S Delivery policy Delivery charges apply department for details. ur different lengths: 1 inch, 11/2 11 barely penetrate a lx4, but the I%- or 2%-inch screws are The table on the right can be of screws for various purlin of spacing between rows of of metal times 2.7 feet of Gulf Rib roofing. 375 screws Gulf Coast representative when GuIfCdast SUPPLY & MANUFACTURING Screw (nurlin) Snacin 12 inch 18 inch 24 inch 50 270 ' 180 135 100 540 360 270 200 1080 ' 720 540 300 1620 1080 810 ' 400 2160 1440 1080 ; 500 2700 1800 1350 600 3240 2160. 1620 ; 7001 3780 2520 1890 800 4320 2880 2160 900 4860 3240 2430 1000 5400 3600 2700 1100I 5946 3960 2970 1200 6480 4320 3240 Figure 6. Gulf Rib panel s� crew ;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 inters, or according to ASCE calculations where applicable. Since ed lumber and metal roofing must be avoided in order to prevent V 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 cation can be aided by pre -drilling panels, allowing screws to go spacing. Pre -drilling will work provided that pilot holes are placed mels. Purlin spacing must be uniform and carefully measured. )n 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 subj Disclaimer While we have made every at1 printing, or technical errors. Oil Canning —a repeating, wave -like appea phenomenon in metal panels like Gulf I defect, nor a cause for rejection. See p. Return policy All panel orders and specia refundable once they are manufactured. clean, resalable condition. For details, ; bottom of page, or call Gulf Coast Supl to change without notice at accuracy in this manual, we are not responsible for typographic, ance in the length of the panel —is a common and often unavoidable ib roofing that have large, flat areas within the panel. It is therefore not a for details on how to avoid oil -canning. order (non -stock) trims are considered the property of the customer and non - Standard trim and accessories are refundable providing they are returned in a to www.gulfcoastsupply.com and click on "No Hassle Return Policy" at y to ask specific questions about returns. e eX " GulfCoaSt SUPPLY & MANUFACTURING Gulf Coast Gulf Rib® Roofing Panels Fastening Schedule for Various Wind 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 Woodgrip° or #9-15 x 1'/z min.15/32 ! 24" 24" 24" 24" Woodzac 1 wood P y T e l yp T e l yp- T e l yp T e l yp Zone 2 Woodgrip® #9-15 x 1'/z min.15/32 24" 24" 24" 24" Woodzaco plywood Type 1 Type 1 Type 1 Type 2 Zone 3 Woodgrip° ,Woodzac® #9-15 x 1'/z min.15/32 plywood 24" Type 2 24" Type 2 24" Type 2 24" Type 2 Fastener pattern Type 1 Type 2 Zone2 ►�a* 44 Eave a :........................... ........................... ............ :... .................................................................... a :---------------- Ridge -------------T- ..\................................................................... Zone 1 Gable 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, Gu'lf C SUPPLY & MANUFACTURING 7. ® Eave Drip & Fascia �--3 ►'—► FHA Style ED-3 Style 2 3/g" Eave drip Eave drip ` 7/16' T For custom eave drip, specify the Eave drip a Eave drip with fascia and inside closure � 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 shlould completely cover the Fascia a fascia is desired, be sure that the top edge of the fascia. Inside closures, which seal off the open dimension you order will be ribs of the panels, are optional. —► b k— hidden by the eave drip. I I Summary of Stock Trims and Flashings i item I .cnerial arder infarmation Ridge caps (RC-2) specify pitch if less than 3/12 or greater than 6/12. Also available in larger 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) 1 specify pitch if greater than 7/12. Seal with universal foam closure material. 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. GULF RIBS" DETAIL MA;N:UAL Ridge Cap Ooo. 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. Solid closures ("Outside Closures") are (right). the same width as the panels. They lock together in a row placed directly under the screws that attach the ridge cap, and form a solid, water -tight, air -tight barrier. j 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'/2 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 Vent® water -tight seal around roof closure or Versa -Vent® vents and come in a variety of sizes. They seal with caulk and conform to the shape of the panel ribs. Lap or 2'/2" Woodgrip®—.1 ___► 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 / 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, FLASHING above is sealed using outside Use EW-2 hemmed endwall when comering flashing, such as with dormers or chimney For custom end -walls, speck roof pitch and 9 r - ENDWALL res. ills with sidewall I Transition Flashing The TRANSITION FLASHING prevents leakage at the point where two different roof pitches meet. It must be sealed on the flower side with outside closures, and can be sealed underneath the upper panels with inside closures. The similar GAMBREL FLASHING is used where the lower pitch is steeper than the upper. TF-1 Transition Flashing closure For custom transition flashing specify the of the two roof slopes and, if necessary, d "a" and "b". "a" and "b" G6lco�\-�t 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) caulk (Solar d) between t h e caulk edge (order EW-1C) flashing and the 3 It o (used if endwall not panel. Roof slope covered by siding) s h o u l d b e /l mentioned if roof 3j12 exceeds 5/12 pitch. bLEW-1 Stepped Endwall a 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. T EW-2 Hemmed b Endwall �a a=41/2" \y b=3„ - GULF RIB''DETAILMANUAL Gable Flashing 0001 Butyl 1 Er-1 sib Custom trim —specify a custom length for a or b. Standard dimensions — a = 3" b=3" GR-1 style Custom trim —specify a custom length for a or b. Standard dimensions — a = 2 3is" b =21/8" Figure 14 Sidewall flashing is applied when the side of 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-1 C). Butyl tape should be applied where the "foot' of the flashing attaches to the roof. I 1\\\\; i \\ ♦1 h..01i11, t 1 � 1� View o - ga a run ascra oar rN—nove 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 SeaP recommended) caulk edge (order SW -IC) (used if sidewall not y covered by siding) 311 3 Butyl/tape 3/4'/ N ,< SW-1 _ Custom trim —specify a custom length for a or b. L� i Standard dimensions — a = 3" b=3" In Gulf Coast Gulf Drip Cap -a.,uaai�uci (p:14) Figure 15 Pre -formed valleys use a diverterto preventwater 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. ib® Siding Sliding Door e Drip (p. 14) / Figure 16 Com{non trims associated with Gulf Rib roofing panels GR-2 Rake & Corner u. 13 HNG GULF R�I'STm 'DE'TA�fL MA�NIUALV7cM1 GR-2 Outside Corner Jloo,'- 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-1 (both on p. 11) can also used as gable rakes, and theN LA j PC-5 (below)or the GR-1 as corners. Customizing rakes or corners is often necessary I 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 S sure to take into account the 3/4" "head space" when 1 t; figuring custom dimensions. 4--T The PC-5 flat corner r panel ¢' works best on smaller I s ,. %- structures, and where Figure 17 When used as cornertrim, the GR-2 straddles the ribs 10 the panels are running of the panels where they meet at the corner of the building. The "1�'outside horizontally. It can be Gulf Rib outside corner also serves as a gable rake (see below). 'c10SU1,e sealed with outside The inside comer (IS-2) has similar dimensions but with a closures. reverse middle bend. Q PC-5 GR-2 Gable Rake b 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. 6" �4 I b IS-2 �a— 4 5/8" drip cap f C4 Figure 99 The drip cap is commonl�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 Ool, BD=1- Base'drip 71�\ 1'/a" Sk G6icozil��Lt SUPPLY & MANUFACTURING Drip Cap and J-Channel DC-1 Drip cap capping the panel end JC-1 J-channel CD panel '/a" 2 V41 L-� capping the 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. Gu'lf Coast C 11 P P l y A MAN 11 F a r T 11 R I N r Gutters loo� 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 Yx4" (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'/2" inches beyond the eave on which gutters are planned. lap -5 or 6 ►I placement, downspouts, and end caps. Hangers employ lap " V screws, and end caps are best attached with rivets. Gutter hangers fit inside panel rib and under lip o Outer a Inner '? Outer c - _ Inner -Outs. of gutter (apply at least - - - - one per panel) and are I Inner and outer gutter sections (marked T' and "O") attached with lap screws alternate along the eave to assure ease of application and or rivets. gutter appearance. i Downspouts in excess of 10 feet in length must be made in 2 sections. i ® Track Covers TC-1 sliding door track cover 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. GULF RIBS" DETAIL MANUAL Gu1fC&9t' 1 Ridge caps (pg. Eave drip (pg. 8) Valleys (pg 12) Gable rakes (pg. Wall flashin (pgs. 10 - 1 Transition & gambrel flashings (pg. 10) Comer trims (pg. 13) Door & window trims (pg. 14) Base drip (pg. 14) Pipe Boot (pg. 11) Electrical Boot Reflective bubble insulation Inside Closuresr •f, WAYS_ Outside Closures ® ® Flex- -ventProfile Vent Expanding Foam Peel and Seal Touch-up Paint dL � P S7, TEK LfqpTE OIL Butyl Tape Titebond� Woodgrip Screws TEK screws WoodZac screws WoodMace screws uide to Misc. Accessories item I application pipe boot Fits over vent and heat pipes. Available also in heat -resistant boots. electrical boot'- oot' Fits around pipes with inaccessible tops (such _as weather -he ads). outside closures - Required to seal under ridge caps and transition and endwall flashings. inside closures Seals under panels, particularly on the eave. - - - -- -- - Profile Vent® Flex-o-Vent® Vented --- --- closure material surpassing many other venting systems. expanding foam_ Compressed adhesive foam expands to seal between valleys and panels. Peel and Seale 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 purpose low-cost sealant, used on panel laps and under trim. Titebond®_ _ _ A superior general purpose caulk for all joints. Matches panel colors. Low profile insulation Greatly reduces radiant heat when installed under panels. Wood_ grip screws Used in. all applications- attaching metal to wood. 1", 11/7", 21h" sizes. TEK screws Self -drilling TEK screws for metal purlins. Lap TEK screws draw - togethe i joints and attach trim. ZAC® screws "Lifetime" screws. WI. 2%11. threaded for wood. self-drilliniz available. 01-26-16