When your home needs a new roof, you'll be faced with the decision about whether you should have the replacement roof installed directly on top of the existing roof or have the existing roof removed completely. It's important that you consider that decision carefully because it is an important one for your roof's strength and durability. Here is a look at some of the things that your roofing replacement contractor will want you to know about full replacement versus covering over the existing roof.

Full Replacement Ensures A Lasting Investment

From a practical standpoint, one of the best reasons to opt for a full roof replacement instead of covering over the existing roofing material is the fact that a completely new roof will last you far longer than it might if you install your new roofing material over the top of the existing one.

If there's any damage to the existing roof, you run the risk that the damage present could inadvertently spread to the new roofing material since it's been installed directly over the top of the damaged roofing. As a result, this could cause premature damage to your new roof, shortening its lifespan and reducing your return on the investment.

Removing the old roofing materials allows for your new roof to be installed on a clean slate. That helps to ensure that you get the longest possible lifespan from the roof because there's no pre-existing damage underneath to affect it.

Full Replacement May Help Identify Hidden Issues

Even if you don't believe that your current roof has suffered any damage, it's still a good idea to remove the old roofing materials first. One of the things that many people don't realize about roofing issues is that, sometimes, the problem may not be immediately apparent. In fact, you may find that it isn't until you remove the surface roofing that you finally see the hidden damage beneath it.

In some cases, moisture may have seeped through cracks between shingles or other vulnerabilities in your roof, resulting in mold growth in the sub-roofing or moisture damage to the cross members and roofing support structure. You wouldn't even know those hazards were there unless you opt for a complete roof replacement.

It's important to recognize problems like these because they can threaten the integrity of your home's roofing structure. It's important that you recognize these problems and address them. That way, you can be sure to protect your home from mold growth and moisture damage.

Full Replacement Cuts Your Repair Costs

Another great reason to consider full roofing replacement instead of just covering over the existing roof is that it can help to cut your repair costs substantially. If you simply apply the new roof on top of what's existing, you may find that the flashing, roof edging, and similar segments of the roof can be more vulnerable to wear, and you may have further issues with your roofing materials. This can cost you over time in roofing repair expenses.

Applying a whole new roof, on the other hand, eliminates the risk of roofing failure due to existing issues and can help to ensure that the flashing is resealed, secure, and will last for years to come. When you're hoping to cut your long-term repair costs, a full roof replacement is a better alternative to covering the existing roof.

Talk with your roofing contractor today for more information about your home's roof replacement needs. He or she can offer you guidance about how best to have your new roof installed and whether it needs a full replacement or whether you can simply install the new roofing materials directly over what's already on the roof.