ABM G 60 Panel's Storage & Installation Instructions



Store ABM Panels in a dry place. Stand the panels on end and fan them out at the bottom to provide positive air circulation and moisture run-off. If panels must be stacked, they should be kept off the ground on wooden blocks or strips in an inclined position in a dry place.

The panels should be stored outside only when it is absolutely necessary and then only for short periods of time. The use of canvas or waterproof paper should be used only when allowing for ventilation. Plastic tarping, which may cause sweating and condensation and trap moisture, should never be used. Panels that are installed immediately will perform correctly evens if they were wet on the bundle. As with all roof & siding panels if they are on a stack, water or any liquid will siphon (capillary action) from ends and sides of stack (panels).

If panels are wet and not being used immediately they need to be separated and completely dried. If panels must be stacked outside, they should be kept off the ground on wooden blocks in an inclined position so all water drains off and each panel must be completely separated by placing dry wood strips approximately every four foot between each panel. This allows for air circulation and moister drainage. Sitting in the pile wet is the time when the damage occurs.

If these precautions are not taken and moisture is trapped in the panel, superficial staining or paint peeling may occur. When moisture remains in the bundle of ABM Panels for a considerable time, wet storage stains and paint defects can occur, reducing the effective life of the panel.

Failure to comply with the above recommended procedures relieves A.B.Martin Roofing Supply LLC of any responsibility and resultant damage to, or deterioration of, ABM Panels and voids all warranties.

Handling

When handling and unloading bundles of ABM panels, extreme caution is advised. Improper handling may cause bodily injury or material damage. A forklift can dent or puncture the underside of the ABM Panel sheet. It is recommended that a spreader device be used on the forklift for bundles over 20 feet in length to avoid bending in the middle of the sheets.

Care should also be exercised to protect the finish when lifting individual panels from the stack or bundle. Dragging of individual sheets from the bundle can scratch the surface and reduce the paint performance. The paint finish of ABM Panels is tough enough to withstand usual weather conditions but can be scratched and abraded if care is not taken. The panel edges must be protected at all times during the unloading and handling process to assure good fitting and good looking lap joints on the finished installation

Cutting, Trimming

There will always be a certain amount of cutting and trimming necessary on the jobsite, such as for openings and gable end panels. Whether cutting with the rib or against it, use an offset hand snips or a Turbo Shear attachment for a cordless drill. There are a lot of hand shears available that do a great metal cutting job. For even better results, cutting may also be accomplished by a portable shear profiled to conform to the ABM Panels for perfect across-the profile cutting. Using a cutting torch, steel cutting blade, abrasive blade or a Carborundum Blade with a saw is not recommended and voids the warranty. Also care should be taken to brush off all particles after installation to further reduce the possibility of rust marks and bleeding on the panel after it is installed.

Failure to comply with the above procedures relieves A.B.Martin Roofing Supply LLC of responsibility for any resulting damage to, or deterioration of, the finish and voids the paint warranty.

*Caution: when working with and cutting roofing and siding, safety glasses and other safety equipment is recommended and should be worn by the worker.

Roofing Installation Sequence


Begin laying the roofing panels on the end of the building away from the prevailing wind so the side lap seams shall face away from the prevailing wind-driven rain. This provides extra security against water penetration. The first panel determines the alignment of all remaining panels on the roof, so extreme care should be taken to accurately square the first sheet. The over lapping rib edge should be flush with the edge of the roof (Detial “A”), and the panel should overhang the eave approximately two inches to provide proper drainage. The side rib with the drain channel should face the direction in which the sheets are being laid down (Detial “B”). When the panel is positioned, it should be fastened through the first rib, top and bottom. The ABM Panel should be attached completely before starting the next panel.

A tip for assuring straight alignment for successive rows of panels is to stretch and snap a chalk lines on the bottom purling from one gable end to the other. Than lay the next sheet, measure from the end of the sheet to the chalk line, this will help keep bottom edge strait.

If roof requires more than one horizontal row of panels, temporarily fasten at two points, not the ends, along main middle ribs of panel #2 above and end lapping over panel #1. Align both panels with chalk line, permanently fasten when all panel are in line. Install panel #3 next to panel #1 side lapping the ABM Panel feature. Install panel #4 above panel #3. Important to check alignment from ridge to eave every sheet. Permanently fasten when panels are in line. Refer to Figure “1”.

Fig”2” shows the proper sequence for the installation of one row of ABM roofing

Nail Fastening

Nails must be galvanized and ring shank design with a gasketing under the head. As illustrated in Detial “F” ABM roofing should be attached through the top of each major rib into each purlin. If the roof purlins are spaced less than 18” on center, an alternative fastening pattern is through every major rib on every other purlin and nailing only the center rib on alternating purlins.

When using nail fasteners and attaching ABM wall panels to purlins (grits), either a pattern attaching every major rib may be used. (Detial “F” or “G”).

The correct way to nail is to drive the fastener through the steel so the nail washer is compressed securely against the metal. Refer to Detial “C”. DO NOT OVER-DRIVE the nail because dimpling will result and cause the panels to leaks. Under-driving can also allow leakage to occur around the nail shaft. When you use nails, the nails should be two inches long to penetrate approximately 11/2 inches into the purlin when driven through the rib. Detail “E” shows the proper fastening through the lap joint.

Screw Fastening

Acceptable fasteners include such items as; Sealtite wood binders, Evergrip 304 stainless steel Bi-Metal screws or equivalent. All must have an EPDM sealing washer and should be mechanical galvanized and painted to match to the roofing and siding colors. Metal to wood screws with combination metal and EPDM sealing washers should be mechanically driveninto the valley or the bottom flat surfaceimmediately adjacent to the major rib on one side or the other for both roofing and siding panels. (Detail "D" & "G"). Screw length should allow a penetration of one inch on side walls and 1 ½"for roof. See Roof Purlin section. When you use screw fasteners,itis recommended that screws be placedin the bottom flat. However, screws can also be applied the same as nail fasteners (Detail "C, E & F"). Extreme care must be taken that screws are properlyinstalled.

Millings or filings will occur frominstalling the screws. Care should be taken to brush off all particles afterinstallation to reduce the possibility of rust marks and bleeding on the panel.

Panels on Roof Purlins

Roof Purlin Spacing should be 18 to 24inches. If trusses or rafters are spaced up to 24inches apart, 1x 4 rough cutis sufficient or spacing 24 inches to 48inches apart, use 2x4 SPF or the equivalent. They should be replacedif purlins are not solid, split etc on a re-roof job.

Panels on Roof Sheet or Shingles

ABM Panels can be installed over existing shingled roofs or roof sheeting of plywood or OSB. Place 1x4 or 2x4 purlins on top of shingles or sheeting - the same as shown in the roof purlin section.

Securely nail or screw the purlins to the rafters not the sheeting. If roofing over an existing shingle roof, pull the drip edge from underneath the shingle

and / or cut flush to the roof sheeting. After purlins are fastened, install a gutter apron #29 on top of the purlins running along the eave to cover the wood purlins. After roof sheeting is in place, finish the rake with a residential rake trim # 18. Laying roof panels directly on top of a shingle roof has been done with success, but is not recommended due to screws not being in solid wood. If roof panels are installed over shingles, following Detail “F” is recommended.

Condensation

Condensation can a problem for metal roofing over open purlins especially for residential. It is recommended to lay a double bubble reflective insulation over the trusses or rafters then install the purlins on top of the double bubble reflective insulation. Tape all joints and staple the reflective insulation to the bottom of the purlins. The insulation will be most effective with at least a 1 inch air space between the insulation and the metal roof sheeting.

If roof purlins are already installed, lay the insulation on top of the purlins. Then fasten the sheeting through the insulation into the purlins. The double bubble insulation will greatly reduce the condensation plus reflect radiant heat (from the sun) thereby keeping your buildings cooler in the summer and warmer in the winter.

Condensation from animal confinement can shorten the life of a metal roof by rusting the metal from the inside out. A double bubble reflective insulation will increase the life of metal roof sheet where animal are confined.

Siding Installation Sequence

Siding panels should be installed starting at the corner or edge of building. Do not run siding sheets all the way to the ground. It is important that all siding panels be kept 6 to 18 inches from contacting the soil to minimize sheet corrosion. A Base Angle #3 is recommended at the bottom edge over the foundation or Splash board. If however you use treated lumber or treated skirt board, use a barrier like Post and Peel to cover the treated board before trims or panels are installed. Evergrip 304 stainless steel Bi-Metal screws are recommended to fasten the panels to treated purling.

The first siding panel must be plumb to assure straight alignment of the entire row of panels. A level should be used to check if panels are plumb. Temporarily fasten the first ABM panel at the starting edge. Install the second panel next to the first with the ABM overlapping. Temporarily fasten panels.

Run a string along purling where fasteners are to be installed. This keeps a strait line to permanently fasten panels.

Roof Purlins caution

Green or wet oak purlins are not recommended due to an acid in oak which can cause the metal to rust prematurely. Also on a re-roof job where a slate roof has been on previously, metal is known to rust prematurely due to residue on the purlins from the slate. Also, treated purlins are not recommended. If the above mentioned purlins are to be used, a barrier like double bubble reflective insulation, #30 felt, or Post and Peel should be used between the purlins and metal sheeting.

Caution must be taken to inspect purlins for knots, and rotten or soft spots. Purlins must be solid enough for fasteners to hold properly and to withstand the applicant’s weight. Persons working on the purlins can fall through. Purlins should be at least a 1”solid wood for screws to hold properly. It is not recommended to install insulation between purlins and roofing panels. This will not allow panels to be on solid wood.

Roof Pitch

ABM roofing requires a certain degree of pitch to ensure proper drainage. To insure weather tightness, a 3/8 inch wide butyl sealant tape can be used on the overlap. Roofing should be applied on roofs with a pitch of at least 2 ½ inches per foot. If the pitch is less than 2 ½ / 12 inches, a 3/8 inch wide butyl sealant tape can be used on the overlap; however, because of the low pitch, the warranty is voided.

When you need to end lap roof panel sheets, a 12 inch lap is recommended for roofs having a pitch under three-inch rise per foot. From three inches to five inches of rise per foot, an eight inch end lap is recommended. Any slope five inches or more requires a seven inch end lap. Panels can be ordered up to 48 foot in length to help reduce end lapping.

Side wall sheeting

ABM panel can be installed on sidewalls that have up to 3feet purlin spacing. When you apply panels to solid sheeting, or old weather boards, you may need to use longer screws to reach into solid wood.

Note: Purlins are also referred to as grits or roof lath. ABM panel roofing & siding also referred to as; roof panels, roof sheeting, tin roofing, corrugated roofing plus others.
 

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