White colonial house with light gray standing seam metal roofing

Benefits of Metal Roofing Installed Over Shingles

Cost

Installing metal roofing over shingles can save on labor and disposal costs associated with removing the old roof, making it a more budget-friendly option.

Time-Efficient

It’s a quicker installation process compared to removing shingles, preparing the roof deck, and then installing the metal roofing.

Added Insulation

The extra layer provided by the existing shingles can offer some additional insulation, contributing to better energy efficiency.

Waterproofing

When properly installed with appropriate underlayment, the metal roofing can act as an additional protective layer, enhancing waterproofing.

Things to Consider When Installing Metal Roofing Over Shingles

Weight:

Adding another layer of roofing can increase the weight on the structure. Ensure that the building’s structure can support the combined weight of the new metal roof and the existing shingles. Typically, Tuff-rib is installed over shingles due to their lighter weight.

Surface Preparation

The existing shingles must be in good condition without any significant damage or irregularities. Proper preparation of the surface is crucial to ensure a smooth and even installation.

Ventilation and Condensation

Adequate ventilation between the old shingles and new metal roofing is essential to prevent moisture buildup and potential condensation issues.

Warranty Concerns

Check with the manufacturer or installer regarding warranty specifications. Some warranties might be affected if the metal roofing is installed over an existing layer of shingles.

Installation Process

Inspection

A thorough inspection of the existing roof is performed to ensure it’s suitable for the new installation. Choose a qualified and licensed roofing contractor so no existing damage is overlooked.

Preparation

Any necessary repairs to the existing roof, such as fixing damaged shingles or addressing structural issues, are completed.

Underlayment

A protective underlayment, such as felt or synthetic material, is installed over the shingles to serve as a moisture barrier and protect against potential abrasion. JD Metals offers an array of underlayment and insulation products.

Metal Roof Installation

Metal panels or sheets are then installed over the prepared surface using appropriate fastening methods and techniques.

Trimming and Finishing

The edges and any necessary areas are trimmed, and finishing touches are added to ensure a neat and professional appearance.

Before installing metal over shingles, it’s essential to consult with a professional roofing contractor to evaluate whether this method is suitable for your specific roof and to ensure proper installation for long-term durability and performance.

Our team here at JD Metals has the materials and resources you need for any metal roofing project. Contact us today!