How to Patch hole in Roof (All Type Of Roof Repair Guide)

How to Patch hole in Roof

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Dealing with construction can sometimes be difficult to perform without proper instructions.

Right? As we have different sorts of roofs, such as flat roofs, sealed roofs, basic and old-fashioned roofs, and so on, there are alternative solutions available.

As a result, each patching procedure is unique.

Every method is unique, but the most important thing is to close the hole. Apply a generous amount of the roof patch to the leaking area once it has dried. 

Spread it evenly with a scraper, careful to cover the entire area. After the roof repair has dried, caulk the edges and any holes that have appeared.

Cover the holes with sheet metal and lay them down over the roofing cement. Caulk the sides of the sheet metal patch and place the shingles on top of it.

How to Patch hole in Roof

This solution is a long-term remedy for nail holes of any size and larger holes and gaps between tiles.

Today in this article, we will be entirely focusing on how to patch holes in the roof so that you can perform the task without any hesitation or expert help. 

Methods and Tools Used

We will discuss methods one by one that “how to patch a hole in the roof”.

Plus, many tools are used for patches, such as a ladder extension hammer, pry bar, a knife for everyday use, a Tape measure, a reciprocating blade saw, and liquid nail polish.

How to repair a flat roof

Flat roofs are frequent on older structures and arid climates since they are typically level. These roofs are safe, but you should regularly inspect the cracks and problems that cause degradation.

Most flat roofs are road surfaces, rubber, polyvinyl chloride, or synthetic material.

Asphalt can be resealed with bitumen or caulked, so although elastic and synthesised membranes are frequently simple to fix with adhesive patches, only if your canopy is in very poor shape will being diligent with repair work prevent severe damage extend the life of your roof.

How to Patch Hole in Roof: Method

Does it consist of 4 steps to patch holes in the roof? Suppose that the leak point or hole is between the two closest walls. 

Determine the distance between the leak and the two walls

Order to find the damaged area in the roof can be difficult because water usually drips for a long time before you notice it.

Go inside your house to get an idea of where the leaks are coming from. Use a tape measure to assess the relative location of patches that appear moist or discolored from water damage under the roof.

  1. Look at a comparable spot on the roof.
  2. When you’re indoors after a hard rain, you may notice a damp, wet scent, which could indicate a leak. To avoid severe roof damage, you must fix the leaks as soon as possible.

Examine the roof 

Examine the roof hole
  1. Climb onto your roof using a strong ladder. Be cautious because being on the roof can be dangerous, especially during harsh winters.
  2. Go above and around the leaking spot, trying to figure out how the water leak down the roof and inside the rooms below. The vast majority of rooftops are not perfectly flat. They frequently have a steep hill to assist water run off the sides. Consequently, water can seep into affected parts elevated in the canopy and eventually run down to the lower areas.
  3. Assign the task of holding the ladder to a colleague. Wear a hook and secure it to a vent hood, temporary barrier, or another hook point for added security.
  4. Determine whether there are any ceiling ruptures, wails, or cracks. These places should be self-evident. A water leak can affect almost any part that seems to be deteriorating. The most severe areas of impairment are critical issues to address immediately, but small areas should not be overlooked. Take care of them as soon as possible before they become major issues.
  5. Any opening that permits water to enter is an immediate problem. The timber framework beneath the roof will deteriorate and become unstable over time if water gets into the roof.
  6. Repairing these areas will extend the life of your roof. Flat roofs can endure for up to 25 years before they require replacement. You may need to hire a professional if your roof is in poor condition.

Look for fractures and holes in the roof’s seams.

  1. Even if the roof’s outer layer appears to be secure, the edges may be leaking. Take a glance around the perimeter of the roof. Water can enter via gaps between the canopy and the walls, as well as vents, chimneys, and metal light cuts that keep the rain out.
  2. These locations, like membrane leaks, can be fixed. You can use an appropriate roofing caulk to fill any gaps and fractures in the roof.

Sweep water and debris away from the damaged area.

Clean up any zones that need to be repaired. Any disposal, gravel, or water left on the roof may aid in preventing the substance from having to adhere to it.

Clearing the area clean also makes it possible to see the damage. Clear the roof with a stiff brush. Start by removing as much debris from the roof as possible.

Before attempting to treat any spots, make sure they are completely dry. 

Always dry out the roof first before making repairs. You just need to dry out those parts that will be treated with cement or sealer.

You can use paper towels to dab dry small surfaces. One can use a torch but use caution to avoid unintentionally setting fire to your roof!

The roof will dry out faster if you wait for sunny weather. If you want to mend a wide area or the whole roof, you’ll need to make it cure on its own for a day or two.

How to Deal with Small Cracks and Hole in the Sealing?

1. With a utility knife, a slice opens the blistered places.

Blisters appear on your roof as little bubbles. First, cut into the blister’s centre to pop it. Make sure the cut is deep, as don’t go in much depth than the affected area. Remove the damaged roofing material with a scraper.

Overheating and trapped moisture causes these stains. Before repairing the blister, make sure the roofing beneath it is dry. If it’s damp, firstly you should try to dry it.

2. Trim the membrane completely flat around the damaged area.

You can repair most minor roof punctures by pressing a seal into them. It can be difficult at times. Make a tiny cut with a knife blade until the substance around the location can be removed without harming the layer upon layer beneath it.

As a guide, use the damaged area. Cut until you’re beneath the damage, then stop to avoid puncturing the rest of the material.

You can use a trowel to raise broken areas. If the metal roof isn’t lying prone, cut limited strips around the defect to level it out.

3. Use a trowel apply a coating of roofing cement.

A good roofer’s cement fills and waterproofs socks gaps on various roof types. Apply a layer of cement 18 inches (0.32 cm) thick to the damaged area. The trowel spread the plaster about 6 inches (15 cm) beyond the damage and then smoothed it out. The defects or holes should be completely hidden.

for flat roof you can use Best Elastomeric Roof Coating For Flat Roof

Roofing cement is widely available in home improvement stores. Most of the cement is available in cans. Some sealants are available in caulk tubes and can be applied with a caulking gun.

Read It! Milwaukee Caulking Gun M12 vs M18

Caulk can fill small holes and fractures up to 1 inch (2.5 cm) wide. Cement is used to repair filling areas. Because cement has an adhesive property, it’s better to use it if you plan to cover a damaged area with waterproofing material.

4. Cover the cement with a piece of fibreglass mesh.

Fibreglass acts as an additional layer of waterproofing for your roof. You have to cut it in size with sharp-edged scissors because it comes in rolls. To keep the mesh in place in the cement, press it down. 

Mesh rolls are commonly available at home improvement stores. You can also go online or purchase it at a roofing supply business.

A glass of fibre is a lightweight tape that has to be used for mesh. It’s ideal for repairing long, straight cracks. Cover the crack with the scrim once you’ve filled it in with caulk or cement.

5. Apply a thick layer of cement to the mesh.

Reopen the roofing cement can and apply a thin layer to the piece of mesh. With a trowel, smoothen the cement flatten and apply additional cement as per demand. Finally, the cement coating should be about 12 inches (1.3 cm) thick and completely conceal the mesh. 

6. To protect the cement from sun damage, cover it with a layer of gravel.

You might have noticed rocks on flat rooftops and wondered why. Flat roofs are frequently protected from sun damage with gravel or river stones coating.

Break the rocks uniformly around the area are to be repaired, ensuring that has no part on the roof surface can be seen beneath them. Add stones to the rest of your roof if it isn’t already covered.

This layer always UV rays to prevent the roof membrane from tearing down due to sunshine. When your roof is covered in gravel, it will last longer.

The reflective coating can also be purchased at a home improvement store and brushed onto the surface.

Applying Roof Patches

1. To quickly fix your roof, get a roof repair kit. 

Roof repair kits include everything to patch the roof.  It comes with caulk for gaps within the sealing and patches for repairing bigger areas of roof membrane damage.

If you buy a kit, you won’t have to go out and find the specific parts you have to repair it.

  • Match your roof’s material with the patches. If you are unsure, then you should get advice from a specialist.
  • Styrene-butadiene-styrene (SBS) roofing is asphalt with a rubber-like consistency. When mending the patch, use a torch.
  • Use an EPDM patch for sealing. EPDM is a petroleum and natural gas-based synthetic rubber.
  • TPO is a rubber that has a single-ply coating that is very white. To repair it, use TPO patches.

2. Using a utility knife, cut out the damaged area.

Locate the damaged area that has to be repaired and begin planning the size of the repair. Cut a rectangle around the damaged area with the knife.

To cut 1 inch deep, gradually deep the cutting until the damaged roofing material is removed. When cutting, use extreme caution. If you cut deeper than its damage, you’ll cut beneath the layers of the cloth.

3. Apply a layer of roofing cement to the hole.

Go to your local hardware store and get a can of water-resistant roofing cement. Most cement cans are appropriate for any roof, but check labels to ensure that it depends on the type of roof individuals possess. Apply an 18-inch (0.32-cm) thick layer of cement to the roof, trying to smooth this out with a trowel until it becomes level with the rest of the roof.

Spread as much cement as possible beneath the roof to go beyond the affected area, which is a good starting point.

4. Apply a layer of metal roof cement to the affected area.

More cement should be applied to create a try to stick point for your major update. Pour the cement over the previously covered and damaged area.

With a trowel, spread it out into a soft layer 6 inches (15 cm) beyond the affected area and 18 inches (0.32 cm) thick. The cement should be wiped clean with the roof’s surface.

metal roof cement

Make sure you spread the cement out a little more than the last time. Use the new patch as a guide to determine where the adhesive should go.

5. To cover the cement, cut a patch. 

To increase water resistance, double-patch the affected area. The new patch should be 6 inches (15 cm) longer and broader than the damaged area, and it should match the last coat of cement you applied. Measure it with a measuring tape and a utility knife and cut it to size.

Adding a second patch will make sure to repair noticeable; it’s worthwhile to strengthen it.

6. Place the new patch on top of the old one. 

You’re familiar with the procedure. Cover the damaged area with the fresh patch and press it into the cement. It should be able to withstand pressure. 

7. Apply a final layer of cement to the repair. 

More cement should be scooped onto the new piece and then smoothed out with a trowel. The layer should be 12 inches (1.3 cm) thick and level with the remainder of the roof. Then clean all your materials and leave the patch alone to grow into a robust, and your roof will be long-lasting.

How long do patches on a roof last?

Ans A roof patch will only last around six months, according to any roofer, so bear that in mind if you try to repair it yourself.

Is it better to repair or replace a roof?

Repairing your roof will be the most cost-effective option to address the issues you’re experiencing. These fixes can help extend the life of an older roof and get you through until it’s time to replace it with a new one.


As we mentioned earlier, there are 3-4 methods for “How to patch a hole in the roof”, but the “Roofing Shingles Made of Asphalt” method is important to discuss.

Asphalt shingles are the best choice for most houses since they are lightweight, affordable, and simple to install.

They come in sheets piled on a roof to create the appearance of more expensive single shingles like cedar and slate, which are placed one at a time.

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