Torch down roofing, also known as modified bitumen roofing, has become a popular choice for many homeowners due to its durability and resistance to extreme weather conditions. If you have an existing deck and are considering installing torch down roofing, it’s essential to understand the feasibility and potential challenges involved. This article will explore whether it is possible to install torch down roofing over an existing deck.
Understanding Torch Down Roofing
Torch down roofing is a type of roofing material made from asphalt and rubber modifiers. It is composed of two layers: a base layer and a cap layer. The base layer is usually made of a fiberglass or polyester mat, while the cap layer is coated with weather-resistant granules. Torch down roofing is installed using a direct torch-applied method, where the membrane is heated with a torch, allowing the roofing material to bond and create a waterproof seal.
Ensuring a Proper Deck Structure
Before considering installing torch down roofing over an existing deck, it is crucial to ensure that the deck structure is in good condition and capable of supporting the additional weight. The added weight of the roofing system may exceed the load capacity of the existing deck, leading to structural issues and potential safety hazards. It is recommended to consult with a structural engineer or a professional roofing contractor to assess the deck’s load-bearing capacity and make any necessary reinforcements.
Removing Existing Roofing Material
If the existing deck has an old roofing material, such as shingles or membrane roofing, it is essential to remove it before installing torch down roofing. Proper preparation is crucial to ensure a smooth and long-lasting installation. Removal of the existing roofing material will ensure a clean surface and allow for proper inspection of the underlying deck structure.
Fixing any Deck Damage
Before proceeding with the torch down roofing installation, it is essential to inspect the deck for any signs of damage. Any rot, decay, or structural issues should be addressed and repaired beforehand to prevent further complications once the torch down roofing is installed. A solid and stable deck structure is crucial for the success and longevity of the roofing system.
Adding a Layer of Insulation
To improve energy efficiency and enhance the performance of the torch down roofing, it is advisable to add a layer of insulation beneath the roofing material. Insulation not only helps to regulate temperature but also reduces heat transfer, preventing the deck from becoming excessively hot during sunny days. The insulation layer can be either installed in flat sections or sloped to direct water towards drains or gutters.
Installing Torch Down Roofing
Once the necessary preparations are complete, the torch down roofing installation can begin. It is essential to hire a professional roofing contractor experienced in torch down roofing installation to ensure the work is done correctly and adheres to all safety standards. The contractor will start by rolling out the base layer of the torch down roofing material, carefully aligning it to cover the entire deck surface. Then, using a direct torch method, the contractor will heat the membrane, ensuring proper adhesion to the deck surface and creating a watertight seal. Finally, a cap layer is applied and heated to complete the installation, followed by proper finishing touches, such as flashing and edge trims.
Installing torch down roofing over an existing deck is possible under certain conditions. It is crucial to ensure the deck structure is solid and capable of supporting the added weight. Removing any existing roofing material, fixing any underlying deck damage, and adding insulation are essential steps in the process. Finally, hiring a professional roofing contractor with experience in torch down roofing installation will ensure a successful and long-lasting result. By following these steps and taking necessary precautions, you can enjoy the benefits of torch down roofing on your existing deck.