How to Spot and Fix a Bad Roofing Job

Unlike normal roofing jobs, poor roofing tasks can result in damaged or unsightly flashing.

Bad roofing jobs can leave a homeowner with a damaged roof or unsightly flashing. Fortunately, there are ways to spot and fix a bad roofing job. These include mismatched shingles, exposed nails, sagging roofs, and reusing old flashing. Here are some tips: – Ask for references. Ask friends and neighbors who have had their roofs replaced. Follow up on those referrals to make sure that the contractor is qualified.

Mismatched shingles

A mismatched shingle problem is often indicative of poor workmanship. It shows a lack of concern for the appearance and value of the home. Moreover, it may lead to future problems if the shingles are not installed in the same pattern. Therefore, it is vital to get a second opinion from a professional.

First, you should check the roof’s line. The line should be straight and not curving or dipping. If it is curved or dips, it could be an indication of a faulty roofing job. You should also check the nail spacing. Different nails work better for different types of roofs, and improper nail spacing can lead to leaks and future problems. The shingles themselves must also be new.

You can also check the nailing by climbing a ladder and lifting shingles. If the nails are properly nailed, you should see the head of the nail resting on the surface of the shingle. If the nails are too deep or too shallow, the shingles may be loose or will fall. Similarly, if you see patches of mismatched shingles, it may be a sign that the quality of the roofing job was compromised.

While inspecting the shingles, it is important to notice the drip edges. If the drip edges do not meet at the edges, it can lead to leaks and moisture problems. A drip edge is mandatory at the edges of the roof to protect the underlying board from water damage and pests. Usually, you can tell that a drip edge is not installed correctly if there are leaks or water concerns.

Exposed nails

One sign of a bad roofing job is exposed nails. Exposed nails can cause leaks in the roofing system. The nails should be sealed with a sealant, such as roofing tar, to prevent them from rusting. It is also essential to cover nail heads with a waterproof sealant. Sealants like polyurethane and roof cement are commonly used to repair exposed nail heads. However, sealants deteriorate over time, especially if they are exposed to sunlight.

Exposed nails often appear at the ridge and flashing of a roof. This can happen because of a poor roofing job or because the nail popped. They are often very difficult to spot and will cause water to leak through the roof. These leaks can even void the manufacturer’s warranty.

To fix exposed nails, first, make sure that the nails are hammered down to a level where they can be sealed. Once you’ve done that, you can use a roofing tar tube to squeeze the tar on top of the nail and around the nail head.

If the nails are loose, you can either hammer them down to hold them in place, or you can use asphalt cement to seal them. If you are unsure of your ability to fix this issue, call a professional.

Sagging roof

Sagging or uneven rooflines can be a sign that a roofing job was not properly done. A properly installed roof will be level and straight from the ground. Sagging rooflines may also be indicative of improper framing or rot in the roof deck. In such cases, a new roofing contractor should inspect and repair the existing roof before installing a new one.

The first step is to check the roofing materials used. Check if the shingles and other materials used for the roof are of different sizes and colors. If the shingles are not of the same size or color, this can lead to uneven aging of the roof, which can lead to additional repairs in the future.

While spotting a bad roofing job may seem difficult, a poorly installed roof can quickly become a problem. If left untreated, it can lead to further structural problems and can even cost you more money. It can also have a negative impact on the overall aesthetics of your home.

In addition to visual signs, the shingles should be evenly spaced and wear out evenly. If they’re uneven or discolored, this could be an indication that the roofing job wasn’t done by a professional. A damaged shingle can also cause stains in the attic. An experienced roofing contractor will be able to repair these problems without replacing the entire roof.

Reusing old flashing

A bad roofing job can lead to leaks and cracks, causing a lot of hassle and expense. A professional roofing company will install metal flashing around any leaking areas, including chimneys and vents. However, a bad roofing contractor will often reuse old flashing instead of using new ones. This is a clear code violation and leads to leaks.

Reusing old flashing to spot and fix bad roofing jobs is not only unsafe but can also be hazardous. Old metal flashings can still have nail holes from their previous installation. Additionally, metal flashings have to be bent and manipulated during the roofing process. The stress of these changes can cause the metal flashing to split, allowing water to seep through and pool on the roof. Not only can metal flashings split, but the sealants used to attach them to roofs are rendered useless when metal is manipulated during the installation process.

When repairing a roof, a qualified contractor should replace the entire flashing system. Unqualified roofers may also use caulk instead of metal flashing, which breaks down quickly. The result is a leaky roof and additional costs. A qualified roofing contractor will replace the old, rusted flashing and install new, waterproof flashing. By getting this right, you can prevent a costly leak problem down the road.

Flashing is an integral part of a roof. It helps seal seams where shingles may not be applicable. For instance, it is often installed near chimneys, where a roof meets a siding or pipe boot, and along a roof corner. A bad roofer may not bother replacing step flashing, as he or she is more interested in completing the roof quickly and cheaply.

Poorly installed metal flashing

Poorly installed metal flashing on a roofing job can be a sign of a more serious problem. If it is not installed correctly, it can pull away from the roof or worse, cause a leak. Even worse, poorly installed flashing may become rusted and unusable over time. To avoid this, it is important to hire a professional to perform the installation.

The first step in preventing a roofing job with poorly installed metal flashing is to inspect the roof for signs of damage. You should check for signs of corrosion, damaged nails, or loose or missing sealant. You should also look for damaged flashing. Depending on the severity of the problem, it might require a costly repair or replacement.

If you notice that there are holes in the metal flashing, you should immediately hire a roofing contractor. Even the smallest hole will allow water to leak and cause big problems. It may break through the galvanized coating on the metal flashing, exposing it to rust. A full inspection of the flashing will reveal the source of the leak.

Another common sign of a roofing job with metal flashing is poor-quality workmanship. Unqualified roofers may substitute roof cement or caulk for metal flashing, which will not last long and could lead to leaks. A qualified roofing contractor will replace the old flashing with new metal flashing. Proper installation will prevent costly leaks from occurring.

Poor ventilation

Bad roofing can lead to a variety of problems, including inefficient ventilation. In addition to making your home uncomfortable, poor ventilation can cause your heating and cooling bills to be out of whack, especially during colder weather. Poor ventilation can also create an environment that is ripe for infestation.

One of the most obvious signs of poor ventilation is the presence of mold. The poor ventilation in a roof area can cause an excess amount of humid air to collect. Even when your central heating is on, this moisture can persist and cause a musty odor. Additionally, it can result in black and green spotting. Over time, these problems can lead to serious mold problems in your home.

Another sign of poor ventilation is shingles that have become loose and/or brittle. If you notice these problems, call a professional to assess the damage. Additionally, poor ventilation can cause the wooden decking on your roof to delaminate. This condition makes it impossible for materials like shingles to adhere properly.

The installation of roof vents is an important part of a good roofing job. Proper ventilation will keep your attic dry and prevent costly repairs in the future. Inadequate ventilation can also lead to voiding warranties.

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Kyle Houck


About the Author

Kyle Houck is the President of Eastern Exteriors, LLC.

Eastern Exteriors, LLC is a family-owned company based in Frederick, Maryland. From new roof installation and roof repairs by professional roofers to premium window installations and expert siding installation, we are a full-service exteriors and contractor roofing company. And, if storms blow your way, we’ll be there to assess and repair the damage quickly.

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