Roof Repair for Sagging Roofs

by | Oct 5, 2022 | Roofing

sagging roofA sagging roof is not only an eyesore but also a danger to your family. A curved roof, or one that is sagging, is a sign that the roof’s structural integrity is not sufficient.

But don’t worry! Don’t panic! You can fix your sagging roof without spending a fortune, no matter if you hire someone to do it or do it yourself. We don’t recommend that you attempt this project if you aren’t familiar with roofing.

If you have some roofing experience and want to do it yourself, this article will help. This article will explain the causes and the best ways to fix them. This article will show you how to fix a sagging roofing system.

What causes a Sagging Roof?

Even if you have done all you can to keep your roof in good condition over the years, it can still deteriorate and droop. Sometimes your roof may not be that old but has been subject to a lot of storms in the last year. It is important to understand why your roof is sagging before you can repair it. These are the top causes of roof sagging:

It’s too heavy – When was your last roof inspection? Your roof may droop if there are structural problems. Roofs are meant to support a maximum weight load. Anything more can cause sagging. Your roof could sag if it has inadequate storm bracing or undersized rafters.

Water damage – Roofs are meant to drain water efficiently. However, heavy rainstorms or flooding can cause roof damage. A damaged gutter system or shingles that are not properly installed can cause water to pool and cause damage.

Other causes – A sagging roof can also be caused by age, poor quality materials, or a sinking foundation. To determine the root cause of your sagging roof contact Restoration Roofing TX to arrange a consultation and roof repair in Fort Worth Texas.


Once you have identified the cause of the damage, it is time to assess the extent. While there are many ways to do this yourself (which we will touch on), we recommend hiring a professional. Restoration Roofing TX is available to help you with exterior repairs. Here’s how you can try to repair the damage.

Take a look outside the house to determine the location of the roof sag in the attic.

Use a flashlight to inspect your attic’s rafters and decking, particularly in areas where the roof is sagging. Next, examine the gusset plates made of metal or plywood.

You should inspect the area for cracks, rot, or other damage.

There are many ways to raise a roof that is sagging. These sections will be covered.


Now you know what the problem is. Now it’s time for you to start gathering the materials necessary to repair your roof. Here’s a list of items that you will most likely need to complete the task. These items include:

  • Flashlight
  • Bolts and washers
  • Chisel
  • Drill
  • Measure tape
  • Nail guns and nails
  • Steel “L” channel
  • Gusset made of plywood
  • Plywood
  • Lumbar strapping
  • Styrofoam

Once you have all the necessary information, you can start working on your project.


You will need to repair sagging roof trusses and rafters in some cases. These steps will ensure that your roof truss or rafter is properly fixed if this is what you are dealing with.

  • To get your truss or rafter back in shape, you will need an “L” channel made of steel.
  • Each side of the L should have four holes.
  • Use a chisel to remove any broken wood pieces (broken scraps).
  • Mount the steel channel “L” onto the rafter.
  • Use washers or bolts to fasten the end of your channel to the rafter/truss.
  • When the end of the piece is in place, move it into its new position.
  • The gap between the steel channel and the rafter/truss should be measured. Next, choose bolts 1.5-2 times the gap.
  • Turn the bolts at the bottom and tighten them. Next, tighten the bolt closest to the break until it is 1/4 inch from the channel.
  • The back bolt should be tightened until it is close to the steel channel. Then, tighten your front bolt until it is 1/4 inch from the channel.
  • Continue tightening the bolts at the front and back until the truss or rafter is in line with the channel.
  • Install bolts in the remaining holes and tighten them.
  • You might consider adding additional support to the area.


We recommend that you hire a professional to fix any damage to the roof decking. You can, however, create a temporary solution using the steps below.

  • Measure the damaged area between your roof beams or rafters and cut a piece of 1/2″ plywood to cover it.
  • Attach a 1″ piece of styrofoam to your plywood. It might be worse if you drive nails into it.
  • Place the plywood and styrofoam, upside down, against the roof decking.
  • Push the plywood up until it touches the underside of the roof decking.
  • You can keep the plywood in place with a piece of lumbar strapping until you have a roofing specialist fix it.


Don’t worry if you are unable to repair your roof on your own. It can be both more cost-effective and time-efficient to hire a professional. Restoration Roofing TX is always available to assist customers in their time of need. We will send a consultant to talk with you about a roof replacement.

There are several reasons why you should hire a professional to repair your sagging roof:

It is cost-effective. Although it may seem cheaper to do the job yourself, if you aren’t an expert in fixing sagging roofs, the final cost could be higher. You will need to buy your own tools and materials. If you don’t do it correctly, you could end up paying more.

Quality materials – Professional roofing contractors are able to determine which materials would work best for each type of job and type of building.

It doesn’t take much to fix it! You can relax and take care of your roof on your day off. You can either take it easy or focus on another task. However you choose to do this, your roof will be fixed.


Is a Sagging Roof Dangerous?

Sagging roofs are not only unattractive but can also pose a danger to your home. A roof is designed to be straight. If your roof is sagging, it could cause the roof to collapse. To ensure that your roof is properly taken care of, it’s best to call a professional roofing company as soon as possible.


Broken trusses and rafters are common reasons behind a sagging roof. The extent of damage will determine if the roof can be repaired, or must be completely replaced. It may be possible to repair and reinforce it, or it might need to be completely replaced. Talk to an expert roofing professional about what you should do for your home.


There are several factors that would affect the cost of repairing a sagging roof. The most important is the extent and type of damage. The cost of repairing a roof that is sagging can rise significantly if it has structural beams that have been damaged. It can cost between $750 to $2,000. It will cost you more to replace the entire thing, but it might be worthwhile in the long term.

What can cause a roof to sag?

A buildup of snow or water can cause sagging roofs. A roof’s structure can be compromised if the weight is too heavy, particularly if it happens over a long period of time. Sagging can also be caused by too many layers of roofing shingles, especially if the roof is old or poorly designed.

Is a Sagging Roof Covered by Insurance?

The reason your roof is sagging will determine whether your insurance will cover it. In most cases, insurance companies will cover damage due to sudden events such as storms or falling objects. The insurance company won’t cover damages if the roof is old or not maintained properly.

How to deal with a sagging roof?

It is important to understand why your roof is sagging. You will need to repair the roof decking, trusses/rafters or a gusset. Sometimes, the roof will need to be completely replaced. A professional roofer is recommended to assess your home and do the job.

How can I keep my roof from sagging?

Insufficient internal bracing, undersized rafters/trusses and excessive weight are common causes of sagging roofs. Sagging roofs can be caused by snow, wind, or too many layers of roofing. It’s best to avoid it sagging by having it properly installed by a reliable roofing company that offers warranties.

Call Restoration Roofing TX now if you need help with your roof.

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Restoration Roofing TX
Keller, TX 76248

Fort Worth, TX

Serving: Fort Worth, Keller Texas, Arlington Texas, Denton County, Tarrant County

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Restoration Roofing TX


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