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Table of ContentsIs It Ok To Install New Roofing Shingles On Top Of Old OnesInstalling Asphalt Shingles Over An Existing Shingle RoofRe-roofing Over Existing Shingles

Unless a metal valley flashing is utilized, the initial step is to line the existing valley with a new underlayment consisting of either 90-pound roll roof or a more resilient modified bitumen membrane. Then install either a closed or woven valley as described above. See roofing valley details at ASPHALT SHINGLE VALLEY FLASHING.

Atlas Roof Corp. www. atlasroofing.com Fiberglass and natural felt shingles Certainteed Roofing www. certainteed.com Fiberglass shingles Elk Premium Building Products www. elkcorp.com Fiberglass shingles GAF Products Corp. www. gaf.com Fiberglass shingles Georgia-Pacific Corp. www. gp.com/build Fiberglass and natural felt shingles IKO www. iko.com Fiberglass and organic felt shingles Owens Corning www.

Reroofing Replacement Vs. Recover – Asphalt Roofing

tamko.com Fiberglass and natural felt shingles Air Vent/A Gibraltar Business www. airvent.com A complete line of roofing system ventilation products, including shingle-over and exposed-ridge vents with outside wind baffles and internal weather condition filters. Likewise soffit and drip edge vents and passive and powered attic turbine-type vents. Benjamin Obdyke www. benjaminobdyke.com Shingle-over ridge vents.

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Extractor vent is formed polypropylene with internal and external baffles. Cor-A-Vent www. cor-a-vent. com Shingle-over low-profile ridge vents, consisting of Cor-a-vent, Fold-a-vent, and X-5 ridge vent, developed for extreme weather condition. Corrugated core. GAF Materials Corp. www. gaf.com Cobra vent: roll-out shingle-over ridge vent with a polyester-matrix core 102 CHAPTER 2 Roofing Mid-America Building Products www.

Re-roofing Vs Roof Replacement, What Is Right For Me

owenscorning.com VentSure corrugated polypropylene ridge vents; also passive roof vents and soffit vents Trimline Building Products www. trimline-products. com Shingle-over low-profile ridge vents, Flow-Thru battens for tile roofings Elk Premium Building Products www. elkcorp.com Highpoint polypropylene shingle-over ridge vents Tamko Roof Products www. tamko.com Shingle-over ridge matrixtype Roll Vent and Rapid Ridge (nail weapon version) and Coolridge, which is molded polypropylene with external and internal baffles Benjamin Obdyke www.

Read This Before You Redo Your Roof

asphaltroofing.org Cedar Shake and Shingle Bureau www. cedarbureau.org Metal Roof Alliance www. metalroofing.com Tile Roofing Institute www. tileroofing.org This short article consists of excerpts or adaptations from Best Practices Guide to Residential Construction, by Steven Happiness, courtesy of Wiley & Sons. Also see the roofing short article links listed at the ARTICLE INDEX the bottom of this short article and our roofing web page: ROOF EVALUATION & REPAIR WORK.

Yeah that's a bear. IF there is not working space either the rooftop unit has to be raised - which is awful as it'll be expensive and need eliminating and replacing refrigerant (unless the installer left flexible line slack) -Or you 'd set up an appropriate membrane under the system and flash the upper end and sides at the roofing system how to re-roof under air-conditioning units which are on top of roofing system Not if you're following the maker's installation suggestions.

com/roof/Roof _ Drip_Edge_Flashing_Specifications. phpOften I'll add (or a roofer would include) a second drip edge right atop the existing shingle layer before laying on the second shingle layer. Or you'll count on the existing drip edge. The post I mention above gives details that assist assure that the drip edge works correctly On re-roofing, I currently have drip flashing, do I need to re-install new drip flashing over old roof? Looking for a source to buy some 5" starter strip for reroofing over shingles.

31 Of Your Toughest Roofing Questions Answered

Thanks I have actually folded over shingles along the edge of my roofing from the last roofing repair work I had actually done. They replaced all comp shingles along the ridge and edges, no metal drip edge is there at all, and wind is blowing particles and rain into the folded shingle. Why would they do this? Is this correct? I can't find anything online that speaks to why they would fold a shingle in half and then nail it down along the edge, aside from as an ornamental edge. Simply check the flashing details - which I can't know for your roof. When you detach the shingles and then include 1/2" thick OSB roof sheathing followed by felt and asphalt shingles, the upper surface area of the finished roofing might be close enough to the initial level of the upper surface of the prior roofing that no flashing changes are required - eg at chimneys - or maybe not.

I require to replace my original cedar shake roof (3/4 inch split shakes), which is set up over wood battens. I plan to replace the roof with architectural asphalt shingles, and am dealing with several roofing contractors to get estimates. The roofer are offering me different opinions about whether I can attach OSB roof sheathing over the battens, or I have to get rid of the battens totally and connect the OSB sheathing straight to the rafters.

Can I Go Over My Existing Shingle Roof With A New

An extremely general number for re-roofing with asphalt shingles may be $100/square or about a dollar per square foot. BUT you can not use this number dependably. Roof replacement costs differ extensively by area of the U.S. as well as by elements peculiar to the private building such as building height, roofing slope (extremely steep, can't walk-on, more expensive to re-roof), and the requirement for incidental repairs of roofing system decking and flashing.

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DC Roofing of Arizona

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Finally the expense to deal with the torn-off shingles might differ widely by location too. So you will want quotes from 2 or 3 regional roofing professionals. Make certain to read bids carefully as there may be differences in what is included in the work. (Oct 12, 2011) Anonymous said: I do not know where alot of these roof task bids are originating from however $100 isn't even practical anymore.