Understanding Torch Down Roofing
Torch down roofing is composed of multiple layers, including a base layer, a torch down layer, and a cap sheet. The base layer is typically made of fiberglass or polyester, which provides strength and durability. The torch down layer consists of a combination of asphalt and rubber modified by torching it onto the base layer. Lastly, the cap sheet is applied, which gives the roof its final appearance and additional protection against the elements.
Common Types of Damage
Torch down roofing can sustain various types of damage that may require repair. The most common types include punctures, cracks, blistering, and granule loss. Punctures can occur due to foot traffic or sharp objects, compromising the roof’s integrity. Cracks may develop over time due to aging or extreme weather conditions. Blistering occurs when moisture gets trapped within the roofing layers, causing bubbles to form, while granule loss refers to the shedding of the protective surface granules, leaving the asphalt layer exposed.
Assessing the Extent of Damage
Before determining if a damaged torch down roof can be repaired, it is essential to assess the extent of the damage. A professional roofer should carefully inspect the roof to identify any underlying issues and determine the feasibility of repair. In some cases, minor damage can be easily repaired, but severe or widespread damage may require a complete roof replacement.
Repairing a Damaged Torch Down Roof
1. Punctures and cracks
If the damage is limited to a specific area and there are only a few punctures or cracks, they can be repaired using a roofing patch. The damaged area is cleaned, dried, and then covered with a layer of primer. A patch made of torch down material is then applied using a propane torch, carefully melting it to bond it with the existing roofing layers.
2. Blistering
To repair blistering on a torch down roof, the first step is to identify the source of moisture. Once located, the blisters are carefully cut open to release any trapped moisture and allow the roof to dry. The affected area is then cleaned and dried before applying a layer of flashing cement. A new torch down patch is installed and heated with a torch to create a strong bond.
3. Granule loss
Granule loss exposes the asphalt layer of a torch down roof to UV rays, leading to accelerated deterioration. To repair this damage, a layer of flashing cement is applied to the affected area, followed by a layer of gravel or crushed rock. This provides protection against UV exposure and helps restore the roof’s functionality.
4. Extensive damage
In cases where the damage is significant or widespread, attempting repairs may not be the most cost-effective solution. It is advisable to consult a professional roofing contractor to assess the situation and determine if a complete roof replacement is necessary.
While torch down roofs are known for their durability, they can still sustain damage over time. Whether it be punctures, cracks, blistering, or granule loss, the extent of the damage will determine if repair is possible. Small localized damage can often be successfully repaired by a professional roofer using a technique called torch down patching. However, in cases of extensive or severe damage, it may be necessary to replace the entire roof. To ensure the safety and longevity of your torch down roof, it is crucial to have it regularly inspected and promptly address any issues that arise.