Would you recommend re-roofing over a single layer of asphalt shingles?

Answer: In some cases
Explanation: Re-roofing (installing a second layer of shingles over an existing single layer) can be acceptable in some situations, but it depends on the condition of the existing roof and local building codes. It may be allowed if the current shingles are in good condition, the roof structure is sound, and there is only one existing layer. However, a full tear-off is often preferred because it allows for inspection of the decking, identification of hidden damage, and proper installation of new materials. It also typically results in a longer-lasting and higher-quality roofing system. For these reasons, overlaying shingles is only recommended in select cases where it makes sense structurally and financially.

Answer: Allways
Explanation: Saves you money and there are other things to consider but for the most part yes

Answer: Never
Explanation: While re-roofing over a single layer of asphalt shingles is legally allowed in many areas and can save on upfront costs, it’s not usually recommended—especially in Florida’s hot and storm-prone climate. Here's why: Downsides of Re-Roofing Over Existing Shingles: Hidden damage: Roofing over old shingles can mask underlying issues like rot, leaks, or soft decking. Poor ventilation and insulation: Extra layers trap heat and moisture, which can reduce energy efficiency and shorten your new roof’s lifespan. Added weight: The extra layer adds stress to your roof structure, which may not be designed to support it. Void warranties: Many roofing manufacturers won't honor warranties if the new roof is installed over old materials. Uneven surface: Existing shingles may cause the new layer to look lumpy or less secure. When it might be considered: The existing roof is in excellent condition (flat, no leaks, no mold or soft spots) Budget is very limited Your local building codes allow it At Honest Abe Roofing Orlando, we strongly recommend a full tear-off for most homes. It ensures your new roof is installed properly, lasts longer, and meets both warranty and code standards. A full replacement may cost more upfront, but it protects your home better and saves money in the long run.

Answer: In some cases
Explanation: LEARN MORE: https://4squareroofing.org

Answer: In some cases
Explanation: The short answer is yes, you can lay new roof shingles over top of the old ones (with asphalt), but there are other factors to take into consideration. 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. Perhaps the most important rule for laying new shingles over top of old ones is that the old roofing has to be in pretty good condition. If you are laying new roofing shingles over an existing roofing system with a ton of leaks or damage, you aren’t doing yourself any good. It might seem like an obvious benefit to having multiple layers of protection on your roof, but that is not automatically true. As a matter of fact, having multiple layers of shingles does not mean that your roof is any more waterproof than it may have been before. Also, having multiple roofing layers can create problems all its own. The biggest reason to lay down new shingles over existing ones comes down to a simple matter of convenience and cost. Keeping the old shingles allows you to skip the messy labor and disposal costs of a tear-off.

Answer: Never
Explanation: we don't cut corners

Answer: Never
Explanation: Of 800 installations, I have only done three shingle over projects.

Answer: Never
Explanation: As a MasterElite installer we cannot roof over existing shingles and for the cost and longevity it's more cost effective to install a new roof entirely.

Answer: In some cases
Explanation: LIMITED FUNDS AVAILABLE, EXISTING NOT SHOT YET.

Answer: In most cases
Explanation: in most cases I would always roof over a single layer unless there is dryrott issues with the sheeting under roof

Answer: Never
Explanation: We do not recommend doing so. While it may seem cheaper to do so, in the long run, it can cost more to so. The weakest point in your roof is the underlayment material. Most roofs are done with felt paper underlayment which absorbs moisture and begins to fail after about 10 years. If the roof is worn out and needs replacing, then the underlayment is also bad and will offer no protection. The worn out shingles now become your underlayment, a job that they were not designed to perform. At Allegiant Roofing we will always recommend removing all worn out materials and installing new materials to provide the longest life roof possible.

Answer: In most cases
Explanation: Code says you are allowed to