
Plastic roofing cement is a popular choice for quick fixes to roof leaks. It is a versatile and affordable solution, often compared to duct tape for its convenience and ease of use. While it may not be the most aesthetically pleasing option, it is effective in patching up cracks, tears, and holes in various roofing materials, including shingles, concrete, and metal. Plastic roofing cement is also useful for waterproofing and sealing leaks around skylights, gutters, and chimneys. However, it is important to note that it should not be used as a permanent solution for major roof repairs or replacements. Homeowners should carefully read the instructions and ensure they have the necessary tools and safety gear before attempting any roofing work.
| Characteristics | Values |
|---|---|
| Use case | Patching holes, cracks, tears, and breaks in roofs |
| Application | Can be applied with a trowel, putty knife, or gloved hand |
| Thickness | 1/8" to 1/4" thick |
| Surface preparation | Surface must be clean and free of dirt, dust, oil, grease, rust, and other foreign matter |
| Drying | Should be applied to a dry surface; air dryer or leaf blower can speed up drying |
| Temperature requirements | Should not be frozen, heated, or stored at temperatures above 120°F |
| Safety | Safety gear and tools are required |
| Durability | Highly resilient and durable through all seasons |
| Waterproofing | Can be used for waterproofing repairs such as roof penetrations and moving joints |
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What You'll Learn

Plastic roofing cement is a good quick fix
One of the key advantages of plastic roofing cement is its ease of use. It is ready to use straight out of the can and can be applied with a trowel, putty knife, or even a gloved hand. The cement is spread to a thickness of about 1/8" and worked thoroughly into the problem area, with additional cement applied beyond the problem area to ensure a good seal. This makes it a quick and simple solution for temporary repairs, especially in emergency situations where a more permanent fix is not immediately feasible.
For example, if you have a small hole or leak in your roof due to a storm, you can use plastic roofing cement to patch it up temporarily until a more permanent repair or replacement can be made. This can help prevent further damage to your home and buy you some time to arrange for a professional roofer to address the issue properly.
However, it is important to note that plastic roofing cement should not be considered a long-term solution. While it can provide a temporary fix, it is not a substitute for proper roofing repairs or maintenance. Homeowners should not mistake themselves as professional roofers and should seek expert advice and assistance for more significant roofing issues. Additionally, it is crucial to follow the safety instructions and precautions when working with roofing cement and only proceed with repairs if it is safe to do so.
Overall, plastic roofing cement can be a valuable tool for quick fixes and temporary repairs, but it should be used as a short-term solution while more durable and permanent repairs are arranged.
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It's ideal for waterproofing repairs
Plastic roofing cement is a great option for waterproofing repairs. It is a professional-grade asphaltic base plastic cement that can be used to repair leaks, cracks, tears, holes, and breaks in a variety of roofing materials, including shingles, concrete, steel, and metal roofs. It can also be used around skylights, gutters, and in crevices. One of the key advantages of plastic roofing cement is its versatility; it can be applied with a trowel, putty knife, or even a gloved hand, making it accessible to homeowners for quick fixes.
When using plastic roofing cement for repairs, it is important to ensure that the surface is clean and free from any debris, rust, or foreign matter that could interfere with adhesion. The cement should be applied at a thickness of approximately 1/8" to 1/4" and worked thoroughly into the problem area, with additional cement applied beyond the problem area to ensure a good bond. For larger cracks, blisters, or holes, a reinforcement material such as glass fabric or fiberglass fabric can be embedded in the cement before covering with more cement.
Plastic roofing cement is particularly useful for waterproofing repairs such as roof penetrations and moving joints. It is ideal for repairing asphalt shingles and can also be used on vertical surfaces such as masonry walls and foundations. It is important to note that plastic roofing cement should not be used with certain materials, such as EPDM, PVC, TPO, or other single-ply membranes.
When working with plastic roofing cement, it is crucial to follow the safety instructions and store the product properly. The container should not be heated or thinned, and it should be stored in a secure container at temperatures below 120°F to avoid leakage. Additionally, it is important to ensure that the roof is safe to work on, especially in extreme weather conditions.
Overall, plastic roofing cement is a versatile and effective solution for waterproofing repairs, providing a quick and durable fix for a variety of roofing issues.
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It can be used to repair cracks, tears and holes
Plastic roofing cement is a great tool for repairing cracks, tears, and holes in your roof. It can be used on a variety of surfaces, including asphalt shingles, built-up roofs, metal, concrete, masonry walls, and steel or metal roofs. It is especially useful for sealing leaks and openings around skylights, chimneys, vents, gutters, and other crevices.
To repair cracks, tears, and holes, start by cleaning the surface and ensuring it is free of any dirt, dust, rust, oil, grease, or other foreign matter that could interfere with adhesion. Then, using a trowel, putty knife, or gloved hand, apply the cement to the problem area, spreading it to a thickness of about 1/8" to 1/4". Work the cement into the crack, tear, or hole, and then apply additional cement beyond the problem area, feathering the edges.
If the problem area is larger than 1/4" wide or 2" long, you may need to embed glass fabric or a similar reinforcing material into the cement before covering it with additional cement. This will provide extra strength and support. Once you have applied the cement, make sure to clean your tools with mineral spirits, paint thinner, or a specialised cleaner.
It is important to note that plastic roofing cement should not be thinned, heated, or stored at high temperatures. Additionally, always ensure that the roof is safe to work on and free of any debris or complications that could interfere with the repair process.
Overall, plastic roofing cement is a versatile and effective solution for repairing cracks, tears, and holes in a variety of roofing materials. It is a quick and easy fix that can provide a durable and resilient seal against leaks and damage.
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It's a good sealant for leaks
Plastic roofing cement is an effective sealant for leaks. It is a versatile product that can be used to repair leaks and cracks in a variety of roofing materials, including shingles, concrete, steel, and metal roofs. It can also be used around skylights, gutters, and crevices to prevent water ingress.
One of the key advantages of plastic roofing cement is its ease of use. It is ready to use straight out of the can and can be applied with a trowel, putty knife, or even by hand. This makes it a convenient and accessible option for homeowners looking for a quick fix for their leaking roofs. It is important to note that while plastic roofing cement is a good temporary solution, it should not be considered a permanent fix. For larger areas of damage, it is recommended to use rolled roofing, fiberglass, or polyester patches in conjunction with the cement for added protection.
Different brands of plastic roofing cement are available in the market, such as the #101 All Weather Plastic Cement and Del-Val 210 Plastic Roof Cement. These products are designed to adhere firmly to prepared surfaces and will not sag, slip, or crack. They can be applied at a thickness of 1/8" to 1/4" and worked into the problem area, including cracks, tears, and holes. To reinforce the repair, a fabric or fiberglass material can be embedded in the cement and then covered with an additional layer of cement.
When using plastic roofing cement for leak repairs, it is important to ensure that the surface is clean and free from any debris, rust, or foreign matter that could interfere with adhesion. This includes removing dirt, dust, oil, or grease from the application area. Additionally, safety precautions should be followed, especially when working on a roof. It is recommended to assess the safety of accessing the roof before proceeding with the repair.
Plastic roofing cement is a reliable option for temporarily sealing leaks and can be easily applied by homeowners. However, for more extensive damage or permanent solutions, it is advisable to consult professional roofers and consider more comprehensive repair or replacement options.
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It's easy to apply
Plastic roofing cement is a great option for those looking for an easy-to-apply solution to roof repairs. It is a versatile and effective way to fix leaks, cracks, tears, and holes in a range of roofing materials. Whether you're a professional roofer or a homeowner, this product can be a quick and convenient fix for a variety of roofing issues.
One of the key advantages of plastic roofing cement is its ease of application. Most products, such as the #101 All Weather Plastic Cement, are ready to use straight out of the can. This means you don't have to worry about mixing or preparing the cement before you start your repairs. You can simply open the can and begin the application process.
The application process itself is also relatively straightforward. The cement can be applied with a trowel, putty knife, or even a gloved hand. It is recommended to apply the cement with a thickness of 1/8" to 1/4" and work it thoroughly into the problem area. For larger areas of damage, you can use rolled roofing, fiberglass, or polyester as a patch and coat it with the cement for added protection.
Another benefit of plastic roofing cement is its versatility. It can be used on a variety of roofing materials, including asphalt shingles, built-up roofs, metal, concrete, and masonry surfaces. This means you don't have to worry about finding a specific type of cement for your particular roofing material. Whether you're repairing a leak, sealing cracks, or filling holes, plastic roofing cement can be a versatile and effective solution.
However, it is important to note that proper surface preparation is crucial for successful application. The surface must be clean and free of any dirt, dust, rust, oil, grease, or other foreign matter that could interfere with adhesion. This is an important step to ensure that the plastic roofing cement bonds effectively to the surface and provides a durable and long-lasting repair.
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Frequently asked questions
Plastic roofing cement is a professional-grade asphaltic base plastic cement used for repairing leaks, cracks, tears, holes, and breaks.
Plastic roofing cement can be applied with a trowel, putty knife, or gloved hand. It should be applied 1/8" to 1/4" thick and worked into the problem area.
Yes, plastic roofing cement can be used to fix leaks in your roof. It can also be used to repair cracks, tears, and holes.
If you have a large area of damage, you should use rolled roofing, fiberglass, or polyester as an extra patch. Coat the back of the material with roof cement and then apply another coat over the top for maximum protection.
It is recommended to start with a dry roof, but there are products available that can be applied to wet roofs, such as "wet r dry".










































