THE NEW WAVE IN ROOFING INSTALLATION GUIDE Visit our website at: www.ondura.
Thank you for buying Ondura – the corrugated roofing and siding material that brings you both good looks and long life. Even though Ondura is easy to install, before beginning, you should thoroughly read these instructions to understand how they apply to your roofing or siding job. We recommend you have an architect or structural engineer check your roofing plan for soundness and especially for proper ventilation. Ondura, like all roofing materials, should be carefully installed.
96´ Fig. 1 Estimating Ondura Sheets 21´ Storage At The Job Site. While stored at the job site, Ondura sheets or tiles should remain wrapped in their plastic shipping covers. Left outside and uncovered, damage can result from rainwater trapped between sheets or tiles. Unwrap stacks as needed during installation. Don’t allow stacked sheets or tiles to get wet while stored. 21´ 96 ft. length X 12˝ 44 inches width/sheet = 26.18 sheets. Round up to 26.25 sheets per row. 21 ft. slope length 6 ft.
SHEETS Installing The First Sheet On A Square Roof. 1. From the corner where the eave and rake meet, measure along the eave 48 inches and mark. 2. From the corner of the rake and Fig. 8 the ridge, measure along the ridge 48 inches and mark. 3. Snap a chalk line between these marks for sheet alignment. 4. To establish a drip-edge overhang of all eave sheets, drive nails into the corner rafters at either end of the eave, and stretch a line between them 1 3/4˝ out along the length of the eave.
Re-Roofing With Ondura Tiles. Ondura tiles make an ideal re-roof over both shingles (up to two old roof layers) and metal roofing. Over shingles, simply nail in place as you would a new roof after first removing shingle ridge and hip covers and repairing any rotted or unstable deck. Over flat, standing seam metal over a solid deck, simply flatten the metal seams and proceed as if over shingles. Check local codes for other dry-in procedures.
Finishing Up: Fig. 16 Small Cut a full-sized Pipeflashing Ondura sheet to a seven-corrugation Ondura width. Cut an Sheet opening 20 inches Ondura Exploaded view deep from the Pipeflashing Boot of molded base bottom edge of the pipeflashing Molded Base pipe accessory sheet and three Flashing Accessory installation corrugations wide. Fit the sheet over the Ondura Sheet flashing accessory so that it will cover the top and both side corrugations.
Easy Maintenance. Tips Ondura sheet and tile roofs are easy to maintain. Over a period of years, weathering will age your Ondura’s roof coating. So you’ll want to give your Ondura roof new life by repainting. First, sweep dirt and loose debris off your roof. Then either brush or spray with acrylic latex or another top quality 100% acrylic latex exterior paint. Caution: Do not steam clean or use pressurized cleaning equipment on Ondura roofing. Planning For Ventilation. Ondura Tile Rake Trim.
