install roll roofing over shingles

Installing Roll Roofing Over Shingles A Comprehensive Guide

When it comes to roofing solutions, homeowners often seek cost-effective and efficient options. One such method gaining popularity is installing roll roofing over existing shingles. This approach not only saves time and labor but also provides an extra layer of protection to your home. However, before embarking on this project, it's vital to understand the process, benefits, and considerations involved.

What is Roll Roofing?

Roll roofing is a type of roofing material made from asphalt that comes in large rolls. It is typically thinner and lighter than traditional shingles, making it an appealing choice for various applications. Roll roofing is widely used for flat or low-pitched roofs and is known for its affordability and ease of installation.

Benefits of Installing Roll Roofing Over Shingles

1. Cost-Effectiveness One of the primary reasons homeowners opt for roll roofing over shingles is the cost savings. Since you're not removing the existing shingles, you can save on labor and disposal fees.

2. Time-Saving The installation process for roll roofing is generally quicker compared to tearing off the old roof. This means you can have your roof ready much sooner, minimizing disruption to your home life.

3. Added Protection Adding an extra layer of roofing can enhance the durability of your home. Roll roofing adds a protective barrier against moisture and the elements, prolonging the overall lifespan of your roof.

4. Ease of Installation Roll roofing is lightweight and easy to handle. It usually comes with self-adhesive options, making the installation process simpler for those with basic DIY skills.

5. Versatile Applications Whether it’s for a shed, garage, or extension, roll roofing can be applied to various structures, giving homeowners a versatile option for roofing.

Considerations Before Installation

1. Condition of Existing Shingles Before proceeding, assess the condition of your current shingles. If they are severely damaged, curling, or have mold growth, it may be best to remove them entirely rather than covering them up.

2. Weight Limitations Ensure that the structure can bear the additional weight of the roll roofing. Most roofs can handle the extra load, but it’s essential to check local building codes and regulations.

3. Ventilation Proper ventilation is crucial to prevent moisture buildup, which can lead to mold and damage over time. Consider installing ventilation systems if your current setup is inadequate.

4. Weather Considerations Scheduling your installation for dry weather is crucial. Applying roll roofing in wet conditions can affect adhesion and overall performance.

5. Local Regulations Check with local authorities regarding building codes and permits needed for roofing projects. Compliance with these regulations is vital to avoid future complications.

Installation Process

Installing roll roofing over shingles involves several straightforward steps

1. Preparation Clean the surface of the existing shingles, removing any debris, dirt, or moss. Ensure that the roof is structurally sound and that there are no leaks.

2. Underlayment Lay down a layer of roofing felt or synthetic underlayment. This acts as a moisture barrier and protects the roll roofing material.

3. Roll Roofing Application Start at the bottom edge of the roof and gradually work your way up. Unroll the first section of roll roofing and align it properly. Use adhesive or roofing nails to secure it in place.

4. Seaming When overlapping sections, ensure that the seams are staggered to avoid water penetration. Apply roofing cement or a sealant along the seams to create a watertight barrier.

5. Final Touches Once all sections are installed, check for any loose parts and reinforce them. Ensure that all edges are sealed properly to prevent wind uplift.

Conclusion

Installing roll roofing over shingles is an excellent option for homeowners looking to enhance their roofing without a significant investment of time or money. By considering the factors outlined and following the installation process carefully, you can achieve a durable, cost-effective roof that offers lasting protection. With the right preparation and materials, your home will have an upgraded roofing system that withstands the test of time.