Easy Rolled Roofing Over Shingles Guide

Did you know that rolled roofing is not only an affordable roofing option, but it can also be installed easily over existing shingles? Whether you’re looking to save money on your roofing project or simply need a quick solution for a low-pitch roof, rolled roofing might be the answer you’ve been looking for.

Key Takeaways:

Roll roofing is an affordable and easy-to-install roofing option for low-pitch roofs.
It can be installed over existing shingles, making it a time and cost-effective solution.
Roll roofing is made from materials like asphalt, fiberglass, and asphalt-coated fiberglass.
While it may not be the most attractive option, it is durable and cost-effective.
Follow our step-by-step guide to learn how to install rolled roofing over shingles.

What is Roll Roofing?

Roll roofing is a composite sheet of roofing material that is developed into a roll for easy installation. It is a roofing material similar to asphalt shingles but thinner, making it a lightweight option for various roofing projects. Roll roofing is commonly used for low-pitch roofs where traditional shingles may not be suitable.

Roll roofing is made from a composite of different materials. This includes asphalt, which provides durability and weather resistance. Fiberglass is often added to reinforce the roofing material, making it more resistant to tearing and cracking. Asphalt-coated fiberglass or asphalt-saturated organic felt are also commonly used in the production of roll roofing. These materials ensure that the roofing material is durable and can withstand various weather conditions.

When installing roll roofing, it is important to prepare the roof surface before installation. Roll roofing is typically installed over bare wood sheathing or sheathing that has been painted with a primer. This provides a smooth and stable surface for the roll roofing to adhere to.

Pros and Cons of Roll Roofing

Roll roofing offers several advantages as a roofing material. Firstly, it is one of the least expensive options available, making it a cost-effective choice for homeowners. Not only does it save you money on the initial installation, but it also requires minimal maintenance, further reducing long-term costs.

Another benefit of roll roofing is its ease of installation. Unlike other roofing materials that can be time-consuming and complicated to install, roll roofing can be rolled out quickly and efficiently. This makes it an excellent choice for both professional contractors and DIY enthusiasts.

Roll roofing is particularly well-suited for low-incline roofs. Its flexibility allows it to conform to the shape of the roof, ensuring a secure and watertight seal. Whether you have a shed, garage, or low-sloping patio roof, roll roofing offers optimal protection.

However, it’s important to consider the drawbacks of roll roofing as well. While it is an affordable option, it is also less durable compared to materials like asphalt shingles. Roll roofing is more susceptible to tears and damage, especially when subjected to structural changes such as settling or expansion. Therefore, it may not be the best choice for areas with extreme weather conditions or frequent foot traffic.

Additionally, roll roofing is considered one of the least attractive roofing materials. Its flat and uniform appearance may not appeal to homeowners looking for a visually appealing roof. However, if aesthetics are not your top priority and you prioritize functionality and affordability, roll roofing can still be a practical option.

In summary, the pros of roll roofing include its affordability and ease of installation, making it an attractive choice for homeowners on a budget. It is well-suited for low-incline roofs and offers effective protection. However, its drawbacks include its lower durability compared to other roofing materials and its less visually appealing appearance. When considering roll roofing, it’s important to weigh these factors and choose the option that best suits your needs and preferences.

Tools and Materials Needed

Before starting the installation process, it is important to gather all the necessary tools and materials. This will ensure that you have everything you need to complete the job efficiently and effectively. Here are the essential tools and materials you’ll need for installing rolled roofing:

Ladder: A sturdy ladder is essential for accessing the roof safely. Choose a ladder that is tall enough to reach the roof comfortably.
Power Nailer or Hammer: A power nailer or hammer will be used to secure the roll roofing to the roof deck. This tool will make the process faster and more convenient.
Flat Pry Bar: A flat pry bar will come in handy for removing any existing shingles or debris from the roof surface.
Measuring Tape: Accurate measurements are crucial when installing rolled roofing. A measuring tape will help you ensure that the roofing materials are cut to the correct size.
Carpenter’s Square: A carpenter’s square is a useful tool for marking straight lines and angles on the roofing materials.
Utility Knife: A utility knife with a sharp blade is essential for cutting the roll roofing material to the desired shape and size.
Tin Snips: Tin snips can be used to trim and shape the roll roofing material as needed.
Broom: A broom will be used to sweep away any debris or dirt from the roof surface before installation.
Chalkline: A chalkline is helpful for marking reference lines and ensuring straight and accurate installation.

In addition to the tools, you will also need the following materials:

Roll Roofing: The main material needed for the installation is the roll roofing itself. Choose a roll roofing material that suits your specific needs and preferences.
Flashing: Flashing is used to seal and protect the vulnerable areas of the roof, such as chimneys, vents, and valleys.
Nails for Flashing: For securing the flashing, you will need nails specifically designed for this purpose.
Roofing Cement: Roofing cement is used to provide additional adhesion and sealing for the roll roofing material.
Roofing Felt or Primer: Depending on the roof surface, you may need roofing felt or primer to prepare the surface and enhance the adhesion of the roll roofing material.

Having all the necessary tools and materials ready before you begin the installation process will save you time and ensure a smoother and more efficient installation. Now that you have everything you need, let’s move on to the step-by-step installation guide.

Step-by-Step Installation Guide

When it comes to installing roll roofing over shingles, it’s important to follow these step-by-step instructions for a successful installation.

First, start by preparing the roof. Clean off any dirt, debris, or existing shingles to create a clean surface for the roll roofing. This step is crucial for ensuring proper adhesion and longevity of the new roofing material.

Next, mark the first row using a chalkline. This will serve as a guide for laying the roll roofing in a straight line. It’s essential to have a well-marked first row to maintain a neat and aligned installation.

After marking the first row, apply roofing cement to the area. This will help create a secure bond between the roll roofing and the underlying shingles. It’s important to apply the cement evenly to ensure proper adhesion and prevent water leaks.

Once the roofing cement is applied, it’s time to lay the first row of roll roofing. Make sure to stretch the material tightly and secure it with nails or roofing staples. This will prevent any sagging or loose areas that could be prone to damage.

Continue laying subsequent rows, overlapping each row by at least 3 inches. This overlap is necessary for proper water drainage and to provide added protection against leaks. Make sure each row is securely fastened with nails or staples to ensure a tight and durable installation.

Finally, cover the nails with roofing cement to create a watertight seal. This will prevent any water from seeping through the nail holes and causing damage to the underlying structure. Trim the edges of the roll roofing to create clean and finished edges.

By following these step-by-step instructions, you can successfully install roll roofing over shingles. Remember to take your time, work carefully, and follow all safety guidelines to ensure the best results.