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13 Σεπ 2023 · So the short answer is: yes, it's possible to install new roof shingles on top of existing ones. But . . . specific conditions must be met and the following considerations must be taken into account: Local Codes and Roof Condition Considerations
3 Αυγ 2022 · Installation is easier than for a tear-off job, since you can use the existing shingles as guides for laying the new ones. However, you must take care to install shingles correctly so they lie flat. And a good job involves installing new flashings rather than relying on the existing ones.
Is it a good idea to install new shingles over old ones? It depends on your existing roof’s condition , local building codes, and your plans. Consult a professional roofer before making a decision.
15 Ιαν 2024 · You can build a roof over an existing roof. But, to be clear, installing a new roof over an old one is a purely exclusive process for roof materials in the form of shingles, like asphalt, wood, and metal. Installing a new roof over an old one is also known as reroofing.
25 Ιουλ 2023 · Roofing over existing shingles, also known as a layover or re-roofing, involves installing new shingles directly over the old ones. While this method can offer certain benefits, it also comes with potential drawbacks.
It's not ideal to install new shingles without removing the old ones, but follow this pro advice if you do. By Mike Litchfield Although placing new roofing over old may be allowed by some codes, “roofovers” tend to be inferior and won’t last as long as a roof installed over stripped sheathing.
25 Αυγ 2023 · Placing old shingles over new ones is only possible with asphalt shingles, also known as composition shingles. You cannot place a new layer over top of slate or wood, and you should definitely never mix materials like laying asphalt shingles over cedar shakes.
