“The Original” STRONGBARN
29 ga., 1 1 /4” Corrugated, 26” Wide, “Stenciled”
Weight per Square: 74 lbs.

Corrugated Roofing & Siding
29 ga., 1 1 /4” Corrugated G-90, 26” Wide
Weight per Square: 64 lbs.
30 ga., 2 1 /2” Corrugated G-90, 26” Wide
Weight per Square: 60 lbs.

STRONGBARN/Corrugated Roofing & Siding are available in lengths up to 30 feet in 1 foot increments.

How to get the best job with STRONGBARN/Corrugated Roofing & Siding

STRONGBARN/Corrugated Roofing & Siding are high-quality, corrugated roofing and siding products made of galvanized steel. Of all the roofing and siding materials available, galvanized steel has proven itself to be the most practical. Ideal for new and remodeled buildings, STRONGBARN/Corrugated Roofing & Siding increase production efficiency and reduce your repair costs. Because they make your building weathertight, they also lengthen the service life of your machinery and equipment.

Contact your local dealer or Hutchison Inc. for a complete service manual that shows you how to apply STRONGBARN to all kinds of storage buildings to help you get the best job possible. STRONGBARN is produced by the Granite City Division of National Steel Corporation. Because it’s our policy to continuously improve our product, all specifications are subject to change without notice.

This catalog discusses STRONGBARN/Corrugated Roofing & Siding, but to increase readability, we will refer to both as STRONGBARN. Where there are differences in specs, and/or uses, we’ll specify STRONGBARN or Corrugated Roofing & Siding.

Gloves should be worn to prevent injury while handling steel panels. Safety glasses should be worn to prevent eye injury when cutting or drilling steel panels with power tools.

Use care when walking, sitting or kneeling on a steel roof to avoid a fall. Steel panels may become slippery when wet. Do not work on the steel panels when wet or when climatic conditions are not suitable for safe installation.


How to Apply Roofing

Applying the Sheets:
For 1 1 /4” or 2 1 /2” corrugated roofing,
1. Start applying sheets vertically at the lower corner of the roof edge, downwind or away from the prevailing wind so that wind, rain and snow will blow over, not under, the sheet side laps.

2. Use extra care when applying the first sheet. Be sure it is plumb, or perfectly square, with the roof edge to assure straight alignment of the entire row of sheets. One way to do this is to stretch chalklines to use as guides between nails driven into each end of the ridge and into the ends of each gable rafter.

3. Start the first sheet with its edge down and extended at least one full corrugation over the gable end (unless a rake finishing accessory is used.). Bend the sheet over and fasten it.

4. Allow at least 3” sheet overhang at the eaves for a drip edge.

5. If the roof slope is 24’ long or less, only one horizontal row of sheets is needed; if it is more than 24’, apply two rows as follows

Apply sheet #1 in the lower corner. Apply #2 next to and sidelapping over #1. Fasten sheets at the purlins, taking care to keep them in alignment at the top and bottom edges and at the side laps. Do not fasten the unlapped edges. Apply #3 above and end-lapping over #1 and the top corner of #2.

Apply #4, sidelapping it over #2. Apply #5 above and end-lapping over #2 and the top corner of #4. Recheck the alignment. Repeat this procedure, always taking care not to permanently fasten until all sheets are aligned and lapped.

Sheet Lapping
Side lap 2 1 /2” pattern of STRONGBARN roofing 1 1 /2 corrugations to cover 24”. For 2 1 /2” corrugated: Side lap roofing by reversing or turning over every other sheet. For 1 1 /4” pattern of STRONGBARN roofing side laps: 2 1 /2 corrugations, which provides 22 3 /4” cover width.

End lap roofing 12” when roof slope is 3” (3:12) or less rise per foot and use sealant; 8” when roof slope is 4” (4:12) rise per foot; 6” when roof slope is 5” (5:12) or more rise per foot.

Nail/Drill Screw Spacing
For 1 1 /4” corrugated, 26” wide roofing: Every fifth corrugation peak for nails or every fifth corrugation valley for drill screws (126 per square at 24” purlin spacing).

For 2 1/2 " corrugated, 26" wide roofing: Every third corrugation peak for nails or every third corrugation valley for drill screws (96 per square at 24" purlin spacing).

3. Start the first sheet, edge down, along the corner. Only one horizontal row of sheets is needed, as few farm building walls are more than 24’ high. Apply sheet #2, side-lapping it over #1, and repeat the procedure. Keep all sheets above the level of permanent contact with soil or manure.

4. Where it is necessary to notch the sheets to accommodate rafter ends, cover the exposed notch area with a small scrap of STRONGBARN to make the building birdproof.

5. It is possible to bend STRONGBARN around a corner. However, like the roof rake, it is preferable to cut the sheet at a corner, start the remaining portion around the corner (which lets you re-align it), and cover the corner with a corner accessory.

6. For greater interior wall strength, such as that required for bulk crops storage, apply STRONGBARN horizontally by fastening them directly to the posts or studs.

Sheet Lapping
Side lap 1 1 /4” corrugated, 26” wide siding 1 1 /2 corrugations to cover 24”. Side lap 2 1 /2” corrugated, 26” side siding 1 full corrugation to cover 24”. End lap siding 3”, if necessary.

Nail/Drill Screw Spacing
For 1 1 /4” corrugated, 26” wide siding. Every fifth corrugation peak for nails or every fifth corrugation valley for drill screws (91 per square at 36” girt spacing).

For 2 1 /2” corrugated, 26” wide siding: Every third corrugation peak for nails or every third corrugation valley for drill screws (69 per square at 36” girt spacing).