How To Repair Damaged Roof Felt

How To Repair Damaged Roof Felt
  • Author: Amanda Arnold
  • Posted On: April 4, 2022
  • Updated On: August 21, 2023

The purpose of roofing felt was twofold. Before the main roof covering was built, it served as a protective barrier for the house. It also served as a secondary barrier against wind-driven rain and snow and possible pests such as insects and birds, who could get under the roof covering.

Patching is the most cost-effective and time-effective solution for larger portions of the felt roof. Cutting away the damaged part is the first step in fixing a felt roof. Increasing the life of your roof Felt has long been a popular choice for flat roofs.

It is powerful and long-lasting, with more than 25 years. However, for them to survive as long as possible, you must take care of them and be aware of any signs of damage.

Steps To Repair Damaged Roof Felt

Check Your Roof Felt Before Purchasing New One

Storms are the main reasons for damage to the roof felt. There are different sorts of shingles, so make sure you know what you’re getting before buying replacements.

Start removing shingles from above while removing shingles surrounding the damaged region. Carefully push beneath the shingle flap with the pry bar to break the tar seal. Lift the shingle slowly to find the nail beneath it.

Take care not to harm the shingle you’re removing or the one beneath it. To remove all shingles, repeat the method to break the tar seal.

Use Pry Bar To Pull Out Nails

After breaking the tar seal, gently slide the pry bar under the shingle you want to remove until it reaches the roofing nail. Then lift the shingle lightly and nail it up about an inch. Remove the pry bar and place it near the nail on the shingle.

Push down on the shingle with the pry bar until the roofing nail pops out. Then, using the pry bar, completely remove the nail. Remove the remaining shingle nails in the same way. Slide the shingle out, and to the side once all nails have been removed. Rep this method until all of the shingles around the damaged felt have been removed.

Cut Off Damaged Roof Felt

Using a sharp utility knife to cut off the damaged roof felt appropriate. Ensure to remove dust, debris, and all nails attached to the wood sheathing must be removed. It will be necessary to replace any damaged or rotten timber. For this repair, you need to use a professional.

There was no damage to our sheathing. Use a putty knife to clear debris and check for any missing nails or staples on any visible portions of the wood.

Replace Roof Felt

Based on the measurements, cut the replacement roof felt. Cover the exposed section of the roof with replacement felt and staple it in place. Begin by stapling a row of roofing felt in the center of the new portion. Smooth out creases as you go to avoid moisture trapping places that could cause problems in the future.

The replacement felt’s bottom piece should overlap the top of the felt below it, and the top section should overlap the felt above it.

Water will run down the felt instead of seeping under it if it penetrates the roofing material.

Replace Shingles

Shingles should be replaced. Working your way up from the bottom of the exposed area. Roofing nails are used to fasten the shingles together. Check to see that the nails are securely embedded in the felt and wood covering. Repair any leak-damaged areas inside the house, and relax in your dry home.

How To Keep Your Roof Felt Well-Maintained?

After a downpour, the most crucial thing to check is how well the water drains off your roof. Ponding could indicate drainage issues, which could result in leaks.

  • Many flat roofs aren’t built to be walked on or support high weights. Avoid walking on your roof or using it as a staging area for mechanical repairs if you don’t want to risk causing harm to the surface. The easiest approach to avoid roof damage is regularly getting it inspected by a professional.
  • They will be able to detect any issues before they become a problem, saving you time and money in the long run. Once a leak or damage occurs, it is always more expensive and problematic. If an examination reveals any problems, it’s critical to address them as soon as possible to extend the life of your roof. Punctures and open seams are all common and easy to solve issues.
  • It’s crucial to know when a roof has had its day, as much as it’s worth addressing problems to extend the life of your roof. When a roof is beyond repair or restoring, it will merely postpone the inevitable, it is far more cost-effective to replace it entirely.


Small tears and damage to roofing felt are not necessarily reasons to spend money on fixing it since many roofs work fine without it. The felt will need to be changed if wind-driven rain leaks through the roof.

Patching can work in certain cases, but it has the same drawbacks as replacing a few shingles and a few more. It’s recommended to hire a home roofing expert to conduct a comprehensive check to see if a patch will extend the life of your roof without causing further damage.

Avatar photo
Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.