Sealing the Deal: Expert Solutions for Leaking Flat Roof Repair

leaking flat roof repair

Nowadays, flat roofs are much sturdier and more durable than they used to be thirty years ago. However, if your flat roof is neglected and you live in an area with frequent heavy storms, you may experience flat roof leaks. In this article, we will provide expert solutions for repairing leaking flat roofs and safeguarding your home against water damage. We will cover different types of flat roofs, how to find and fix leaks, and tips for proper flat roof maintenance.

Key Takeaways:

  • Regularly inspect your flat roof for signs of damage to prevent leaks.
  • Locate the source of the leak by measuring the distance of the damp spot on your ceiling from the nearest walls.
  • Fix smaller leaks yourself using appropriate repair materials for your flat roof type.
  • Call in flat roof professionals for an extensive examination and advice on repairing or replacing the entire roof.
  • Maintain your flat roof to extend its lifespan and protect your home during stormy seasons.

How to Find a Leak in a Flat Roof

Before you can start fixing a leaking flat roof, you need to locate the source of the leak. Finding a leak in a flat roof is generally easier than in a sloped roof because water tends to travel a shorter distance. To find a leak, measure the distance of the damp spot on your ceiling from the nearest walls and then inspect the area on the roof directly above it. Clean any debris or leaves on the roof and feel for damp spots, blisters, cracks, or tears. If you’re having trouble finding the source, you can perform a water test by pouring small amounts of water where you suspect the leak to be located and checking for signs of leakage inside the house.

Signs to look for when finding a leak in a flat roof Methods to locate the leak
Damp spots on your ceiling Measure the distance from nearest walls and inspect the corresponding area on the roof
Blisters on the roof surface Feel for damp spots or signs of moisture
Cracks or tears Inspect the roof for visible damage
Debris or leaves on the roof Clean the roof to improve visibility

Once you have identified the location of the leak, you can proceed with the necessary repair steps to fix your flat roof and prevent further water damage.

How to Fix a Flat Roof that Leaks

Once you have located the source of the leak, you need to assess the extent of the damage. Smaller leaks such as individual blisters, cracks, or tears can typically be fixed by the homeowner. However, if you find several sources of leaks on an older roof, it may be wise to call in flat roof professionals for a thorough examination. They can advise you on whether to repair or replace the entire roof. To fix a smaller leak, you will need to determine the type of material your flat roof is made of and choose the appropriate repair material. The most common types of flat roofs in the UK include felt, fibreglass, EPDM, concrete, and asphalt.

Flat Roof Repair Options

Flat Roof Material Repair Solution
Felt Flat roof sealant or torch-on roofing felt
Fibreglass (GRP) Fibreglass repair kit or repairing flashing on GRP roof
EPDM (Rubber) Sealant or self-adhesive flashing tape
Concrete Temporary fix or torched-on roofing felt
Asphalt Self-adhesive bitumen flashing tape or torched-on asphalt

Regardless of the material, it’s important to use the right repair materials and techniques to ensure a long-lasting fix. In some cases, it may be best to consult a professional flat roof repair company to handle the job. They have the expertise and tools to tackle complex repairs and provide durable solutions.

Remember, a well-maintained flat roof can protect your home from water damage and extend its lifespan. Regular inspections and prompt repairs are essential for preventing further leaks and costly repairs down the line. Don’t wait until it’s too late to fix a flat roof that leaks!

How to Repair a Felt Roof

Felt roof repair is a common task that can often be tackled by homeowners. Whether you’re dealing with minor leaks or significant damage, there are solutions available to restore the integrity of your flat roof. Here, we’ll guide you through the process of repairing a felt roof, step by step.

Step 1: Assess the Damage

Before you begin any repairs, it’s important to assess the extent of the damage to your felt roof. Take the time to thoroughly inspect the area and identify any leaks, splits, or other issues. This will help you determine the best course of action and ensure that you have the appropriate materials on hand.

Step 2: Patch Small Leaks and Splits with Flat Roof Sealant

If you’re dealing with minor leaks or splits, you can easily patch them up using flat roof sealant. Start by cleaning the affected area and ensuring it is dry. Then, apply two layers of flat roof sealant, following the manufacturer’s instructions. This will provide a protective barrier and help prevent further damage.

Step 3: Consider Torch-On Roofing Felt for Significant Damage

In cases where the damage to your felt roof is more significant, it may be necessary to torch-on a new layer of roofing felt. This is a job best left to professionals who are experienced and insured to work with a naked flame. Hiring a professional ensures that the torch-on process is done correctly and safely, minimizing the risk of further damage and ensuring a long-lasting repair.

repair a felt roof

Repairing a felt roof requires careful attention to detail and the right techniques. By following these steps and seeking professional help when needed, you can ensure that your felt roof is restored to its optimal condition.

How to Repair a Fibreglass Roof

Fibreglass roofs, also known as GRP flat roofs, are durable and can be repaired by the homeowner in most cases. Small splits and leaks can be easily spotted and repaired using a fibreglass repair kit. Clean the area, follow the instructions provided with the kit, and apply the necessary layers of material. If the issue is with flashing on the GRP roof, you will need to laminate down chopped strand matting using a similar process. Ensure the repaired area matches the original fibreglass to maintain the aesthetic appeal.

Repairing a fibreglass roof is relatively straightforward with the right tools and materials. Here’s a step-by-step guide to help you with the process:

  1. Start by identifying the damaged areas on your fibreglass roof. Look for any splits, cracks, or leaks that need repair.
  2. Thoroughly clean the damaged area using a brush or soft cloth. Remove any dirt, debris, or loose material to ensure proper adhesion.
  3. Prepare the fibreglass repair kit according to the manufacturer’s instructions. This typically involves mixing resin and hardener.
  4. Apply the prepared resin mixture to the damaged area, ensuring complete coverage. Use a brush or roller to evenly spread the resin.
  5. Cut fibreglass matting or cloth into suitable pieces and lay them over the wet resin, ensuring they overlap the damaged area.
  6. Apply another layer of resin over the fibreglass matting, saturating it completely. Smooth out any air bubbles or wrinkles.
  7. Allow the repair to cure according to the manufacturer’s instructions. This may involve waiting for a specific amount of time or using a UV lamp to speed up the curing process.
  8. Once fully cured, check the repaired area for any inconsistencies or imperfections. Sand down any rough edges and apply another layer of resin if necessary.
  9. Finally, match the repaired area to the rest of the fibreglass roof’s appearance. Use gel coat or paint designed for fibreglass surfaces to ensure a seamless blend.

Remember, if you’re unsure about repairing your fibreglass roof or the damage is extensive, it’s always recommended to seek professional assistance. They can provide an accurate assessment and carry out the necessary repairs to ensure the longevity and performance of your roof.

Maintaining Your Fibreglass Roof

Regular maintenance is crucial to keep your fibreglass roof in top condition and prevent future damage. Here are some essential maintenance tips:

  • Clear any debris, leaves, or moss from the roof surface regularly. This helps prevent the build-up of moisture and potential damage to the fibreglass.
  • Inspect the roof for any signs of damage or wear at least once a year. Look for cracks, bubbles, or areas where the gel coat has worn off. Promptly repair any issues to prevent further damage.
  • Trim any overhanging tree branches near your roof to prevent them from scratching or damaging the fibreglass surface.
  • Check the flashing around vents, chimneys, and skylights. Repair or replace any damaged flashing to maintain a watertight seal.
  • Regularly clean the gutters and downspouts to ensure proper water drainage from the roof. Clogged or blocked gutters can lead to water pooling on the roof surface.
  • Consider applying a UV protectant coating to the fibreglass roof. This helps prevent fading and prolongs the lifespan of the roof.

By following these maintenance practices and performing necessary repairs promptly, you can extend the life of your fibreglass roof and keep it in optimal condition for years to come.

Advantages of Repairing a Fibreglass Roof Disadvantages of Repairing a Fibreglass Roof
  • Durable and long-lasting
  • Can be repaired by the homeowner in most cases
  • Easy to identify and fix small splits and leaks
  • Cost-effective compared to roof replacement
  • Repair materials readily available
  • Extensive damage may require professional assistance
  • Repairing flashing on a GRP roof can be challenging
  • Matching repaired area to the original fibreglass finish may be difficult
  • Improper repairs can affect the structural integrity of the roof

Fibreglass Roof Repair

How to Repair an EPDM Roof

EPDM roofs, also known as rubber flat roofs, are popular choices among UK homeowners. Their durability and weather resistance make them an excellent option for flat roofs. However, like any roofing material, they can develop issues over time, such as tears or rips.

If you notice small tears or rips in your EPDM roof, you can apply sealant as a temporary fix. This will help prevent further water penetration until a more permanent solution can be implemented. Make sure to clean the damaged area thoroughly before applying the sealant.

For larger holes in your EPDM roof, it is best to use self-adhesive flashing tape specifically designed for EPDM roofs. This tape provides a durable and watertight seal, ensuring the longevity of your roof. Before applying the tape, clean the area and apply a suitable EPDM primer to enhance adhesion.

Here’s a step-by-step guide on how to repair an EPDM roof using self-adhesive flashing tape:

  1. Clean the damaged area of the roof thoroughly to remove any dirt, debris, or loose material.
  2. Apply an EPDM primer to the cleaned area, following the manufacturer’s instructions.
  3. Measure and cut the self-adhesive flashing tape to the appropriate size, allowing some overlap around the damaged area.
  4. Peel off the backing from the tape and carefully position it over the damaged area, ensuring a tight seal.
  5. Use a hard roller to firmly press the tape onto the roof surface, ensuring proper adhesion and eliminating any air bubbles.
  6. Inspect the repaired area to ensure there are no gaps or loose edges. Make any necessary adjustments or additional sealing if required.
  7. Check the rest of your EPDM roof for any other signs of damage and address them promptly to prevent future issues.

For multiple tears or holes in your EPDM roof, it’s crucial to consider the possibility of deeper issues. In such cases, it is advisable to seek professional EPDM roof repair services. They have the expertise and equipment to identify and address any underlying problems, ensuring a comprehensive and reliable solution.

By following these steps and addressing EPDM roof repairs promptly, you can maintain the integrity of your rubber flat roof and extend its lifespan, keeping your home protected and watertight.

How to Repair a Concrete Roof

Concrete flat roofs are susceptible to leaks caused by cracks and surface wear. To address these issues, it’s important to know how to repair a concrete roof effectively. By following the right steps, you can temporarily fix leaking concrete roofs and ensure long-lasting protection for your home.

Temporary Fix for Leaking Concrete Roof

When you discover a leak in your concrete roof, it’s crucial to address it promptly, even if you’re planning a more permanent solution in the future. A temporary fix can help prevent further damage to your home’s interior.

  1. Start by cleaning the area around the leak. Remove any debris, dirt, or loose concrete using a broom or brush.
  2. Apply a bitumen primer to the affected area. This helps create a strong bond between the concrete surface and the repair material.
  3. Next, use a bitumen-based waterproof sealant or paint to cover the leaking area. Apply multiple layers if necessary, ensuring complete coverage.

This temporary fix provides a protective barrier against water penetration while you plan for a more permanent solution.

Long-Term Repair with Torched-On Roofing Felt

If the concrete roof has larger cracks or extensive damage, a more robust repair method is recommended. Torched-on roofing felt offers superior coverage and durability, making it an ideal choice for concrete roofs.

To repair a concrete roof using torched-on roofing felt:

  1. Clean the damaged area thoroughly, removing any debris or loose material.
  2. Apply a bitumen primer to the cleaned surface. This prepares the concrete for optimal adhesion.
  3. Roll out the torched-on roofing felt over the damaged area, ensuring it overlaps the surrounding concrete surface by at least 75mm.
  4. Use a torch to heat the roofing felt, melting the bitumen on the underside and bonding it to the concrete roof.
  5. Press down firmly on the torched-on roofing felt to ensure a secure bond.
  6. Repeat the process for each damaged section, ensuring proper coverage and alignment.

The use of torched-on roofing felt provides a long-lasting solution for repairing concrete roofs, offering enhanced protection against leaks and extending the lifespan of your roof.

Advantages of Torched-On Roofing Felt for Concrete Roofs
1. Provides excellent waterproofing properties
2. Resistant to UV rays and weathering
3. Durable and long-lasting
4. Enhances the structural integrity of the concrete roof
5. Quick and efficient installation process

How to Repair an Asphalt Roof

Asphalt roofs, known for their durability, can develop cracks and blisters over time. If you notice any damage to your asphalt roof, it’s important to take immediate action to prevent further issues. Here are some effective methods to repair an asphalt roof and ensure its longevity.

To seal small cracks and blisters, you can opt for a quick fix using self-adhesive bitumen flashing tape. This heat-applied tape is easy to apply and provides a temporary solution to prevent leaks and further damage.

If you have multiple cracks or blisters in the same area, it’s advisable to consider a more permanent fix. One option is to use torched-on asphalt for flat roofs. This technique involves melting the asphalt material with a torch, creating a watertight seal that can withstand the elements.

When working with torched-on asphalt or any other roofing material, it’s crucial to prioritize safety. Take the necessary precautions, such as wearing protective gear and ensuring proper ventilation in the work area.

Benefits of Using Self-Adhesive Bitumen Flashing Tape:

  • Easy application process
  • Provides temporary protection against leaks
  • Cost-effective solution
  • Requires minimal maintenance

For a more comprehensive understanding, here is a table summarizing the repair methods for different types of flat roofs:

Flat Roof Material Repair Method
Felt Flat roof sealant or torched-on roofing felt
Fibreglass (GRP) Fibreglass repair kit or repairing flashing on GRP roof
EPDM (Rubber) Temporary sealant or self-adhesive flashing tape
Concrete Temporary waterproof sealant or torched-on roofing felt
Asphalt Self-adhesive bitumen flashing tape or torched-on asphalt

Remember, regular maintenance plays a vital role in extending the lifespan of your asphalt roof. Inspect your roof periodically for any signs of damage, and address repairs promptly to prevent costly issues down the line.

Expert Advice:

“When repairing an asphalt roof, it’s essential to choose the right materials and methods for a lasting fix. Consider the extent of the damage and consult with a professional if needed to ensure the best outcome.”

Looking After Your Flat Roof

Proper maintenance is crucial for preventing flat roof leaks and ensuring the longevity of your roof. To keep your flat roof in top condition, it’s essential to conduct regular inspections for any signs of damage, such as cracks, blisters, or tears. By identifying these issues early on, you can prevent further damage to the interior of your home.

When you notice a leak or any other problems with your flat roof, it’s important to address them promptly. Sealing flat roof leaks, whether through temporary solutions like sealants or permanent repairs, should be done as soon as the problem is identified. Taking immediate action will help prevent water from seeping into your home and causing extensive damage.

In addition to repairs, consistent flat roof maintenance can help prevent leaks from occurring in the first place. Regularly clear away debris, such as leaves or branches, from the surface of your roof. This will not only prevent clogs and drainage issues but also minimize the risk of damage. It’s also advisable to clean your gutters and downspouts to ensure proper water flow off the roof.

Sealing flat roof leaks and practicing proactive maintenance will help safeguard your home against water damage and extend the lifespan of your flat roof. By taking care of your roof, you can have peace of mind during stormy seasons, knowing that your home is well-protected.

Contact Your Local Roofing Company Enfield

Looking for help with your roof? Contact The Roofing Company Enfield online, email us at call us on 0203 3057924 or visit us at 204 Baker Street, Unit 312, Enfield, EN1 3JY.

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Gary at The Roofing Company

Get in touch with The Roofing Company - Enfield Roof Installation and Roof Repairs for a free roofing quote. Call us on 0203 3057924 or email us at

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Attention Enfield homeowners and surrounding towns! The Roofing Company Enfield is your premier residential roofing company offering comprehensive roofing services that cover all aspects of roofing. From roof installation to repairs, including flat roofs, guttering and chimney repair and maintenance, we excel in solving any roofing problem. Our experienced team of roofers and roofing contractors guarantees top-notch workmanship. Don’t settle for less. Over 150 5-star reviews on Google and hundreds of others across Yell, Bark, Check-a-trade and more can’t be wrong! Contact us today for reliable and guaranteed roofing services.”

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