What To Do About Warped Siding

With Father’s Day happening this weekend and grills getting fired up all over the neighborhood, it’s a great time to talk about one of the most misunderstood siding issues I hear about: warped vinyl. Every summer, readers ask me why their siding looks “wrinkled,” even when it’s brand new. They usually blame the sun, the heat, or the frigid Connecticut winters. But here’s the kicker: warped siding isn’t a weather problem. It’s an installation problem.

The technical term for that unsightly ripple effect is “oil canning” or “stress buckling,” and it’s almost always the result of improper installation, not Mother Nature.

Vinyl siding is a fan favorite because it’s durable, low-maintenance, and looks great. But even the best-looking siding won’t hold up if it’s not put on right. Homes are built with natural materials like wood that expand and contract with the seasons. Siding needs to move with those changes. If it’s nailed too tightly, it can’t “breathe,” and that’s when it starts to buckle and warp.

Here’s another common mistake: overlapping the panels too much. It might seem like extra overlap equals extra strength, but it actually traps the siding, making it stretch and buckle when temperatures shift.

Now, back to that burning question: can the sun warp your siding? Not really. But there is one backyard culprit I’ve seen cause some serious damage: your grill. If you’re planning a Father’s Day cookout, do your siding a favor and keep that gas grill a good distance from the house. That seared steak isn’t worth melted siding.

Unfortunately, once siding starts to oil can, it needs to be replaced. Since the issue stems from how it was installed, the manufacturer’s warranty typically won’t cover it. And if your siding is a few years old, getting an exact color match might be tricky.

Bottom line: this is a job that requires know-how. Whether you’re hiring a pro or going the DIY route, make sure proper installation techniques are followed. You don’t want your home’s exterior to look like a wavy potato chip.

How to Find the Right Expert for the Job

If you’re not up for a DIY siding install (and really, who wants to spend Father’s Day up on a ladder?), here are a few quick tips to help you find a reliable contractor:

• Ask for experience specifically with vinyl siding. Not all siding is the same, and vinyl has its quirks. Make sure they’ve got a solid track record.

• Check references and reviews. Past customers are your best source of truth. Look for red flags like frequent callbacks or mention of warped siding.

• Make sure they’re licensed and insured. This protects you in case anything goes sideways, literally or figuratively.

• Ask about manufacturer certification. Some siding brands certify installers. This can improve your odds of proper installation and preserve the warranty.

• Get everything in writing. A detailed proposal should include materials, labor, timeline, and cost. If they can’t provide it, walk away.

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Got a question for Bob? Email it to info@odonnellbros.com with the subject line “Ask the Pro.” Your question may be featured in a future column. For remodeling help, call O’Donnell Bros. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

Warped Siding is a Common Problem

A question I get from readers time and time again is about vinyl siding that looks “wrinkled” even when it’s new. Many people think warped siding is an environmental problem and that too much sun and heat or even the contrasting winter cold is what’s creating the damage. Little do they know that warping has very little to do with the weather and a whole lot to do with how it’s put on the home.

Let’s start with the real name of the problem. Siding that is wrinkling or warping is actually called “oil canning” or “stress buckling” and it happens when the siding isn’t installed properly.

All homes are made of natural materials such as wood, which expand and contract with seasonal changes. People love vinyl siding because it’s very low maintenance and offers fantastic curb appeal, but a DIY or inexperienced install can actually make a house look much worse, even with very new siding. 

Every house needs to expand and contract. While it might seem logical to nail vinyl siding tightly to make sure it doesn’t come loose, doing so will actually cause the panel to buckle because it can’t “breathe” with the house. That’s why most vinyl siding panels come with longer nail slots instead of small holes. It gives everything room to move and shift. 

Another possible siding installation pitfall is leaving too much overlap between panels. While you might think this creates a stronger bond, it actually restricts movement, causing the siding to stretch and then buckle in the same way.

Back to my reader’s question. Is there ever a time when the sun might cause siding to warp? The answer is not really, although I have seen damage from sunlight reflecting off an adjacent window. The only other thing that could cause an issue is your gas grill, so keep it far away from the house.

Once oil canning happens, the siding has to be replaced. Because the issue is installation, the product’s warranty is worthless and the manufacturer isn’t going to be responsible for the defect. While removing panels is pretty straightforward, it can be tough to get a color match if the siding is a bit older. 

These are all the reasons why it’s so important to work with a contractor who knows what he or she is doing. If you’re going to tackle this job on your own, make sure you do your research and know all the common mistakes that can be made. You don’t want all that hard work to result in a home aesthetic that’s anything less than perfect. 

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.

A Vinyl Siding Conundrum

A reader recently wrote to me about a problem with her vinyl siding. The siding, which was only a few years old, had warped and started looking “wrinkled”, as she described it. At first, the reader thought it might be from direct sun exposure, but the wrinkling became visible all over the house, even in shady spots. What was she to do?

Warping is a fairly common problem with vinyl siding and it has nothing to do with the sun. The issue is actually called “oil canning” or “stress buckling” and it happens when the siding isn’t installed properly.

All homes are made of natural materials such as wood, which expand and contract with seasonal changes. People love vinyl siding because it’s very low maintenance and offers fantastic curb appeal, but a DIY or inexperienced install can actually make a house look much worse, even with very new siding. 

Every house needs to expand and contract. While it might seem logical to nail vinyl siding tightly to make sure it doesn’t come loose, doing so will actually cause the panel to buckle because it can’t expand and contract with the house. That’s why most vinyl siding panels come with longer nail slots instead of small holes. It gives everything room to move and shift. 

Another possible siding installation pitfall is leaving too much overlap between panels. While you might think this creates a stronger bond, it actually restricts movement, causing the siding to stretch and then buckle in the same way.

Back to my reader’s question. Is there ever a time when the sun might cause siding to warp? The answer is not really, although I have seen damage from sunlight reflecting off an adjacent window. The only other thing that could cause an issue is your gas grill, so keep it far away from the house. 

Once oil canning happens, the siding has to be replaced. Because the issue is installation, the product’s warranty is worthless and the manufacturer isn’t going to be responsible for the defect. While removing panels is pretty straightforward, it can be tough to get a color match if the siding is a bit older. 

These are all the reasons why it’s so important to work with a contractor who knows what he or she is doing. If you’re going to tackle this job on your own, make sure you do your research and know all the common mistakes that can be made. You don’t want all that hard work to result in a home aesthetic that’s anything less than perfect. 

Bob O’Donnell is the owner of O’Donnell Bros. Inc., a Bristol-based home improvement company established in 1975. Email your questions for Bob to info@odonnellbros.com with the subject line “Ask the Pro.” All questions may be considered for publication. To contact Bob for your remodeling needs, call O’Donnell Bros. Inc. at (860) 589-5155 or visit http://www.odonnellbros.com. Advice is for guidance only.