When it comes to siding installation or replacement, you may wonder if it’s necessary to remove the existing siding before installing new starter strips. Starter strips are an essential component of siding installation as they provide a secure base for the siding panels. In some cases, it is indeed possible to install starter strips over existing siding. However, it is important to consider several factors and ensure proper installation to maintain the integrity of your siding system.
Understanding Starter Strips:
Before discussing whether you can install starter strips over existing siding, it is crucial to understand their purpose. Starter strips, also known as J-channels, are long, thin pieces of metal or vinyl that create a stable foundation for the initial row of siding panels. They are typically installed at the bottom of the wall, and their shape allows for the insertion of the siding panels, locking them securely into place. Starter strips help protect against water infiltration and wind damage while also giving the siding a finished appearance.
Factors to Consider:
When contemplating installing starter strips over existing siding, certain factors should be taken into consideration:
- Condition of the Existing Siding: The condition of the existing siding is an important factor. If the current siding is warped, damaged, or decayed, it’s generally recommended to remove it before installing new starter strips. Installing new starter strips over deteriorated siding may cause further problems, compromising the overall integrity of the siding system.
- Type of Existing Siding: The type of existing siding can play a role in determining whether it can adequately support starter strips. More solid and robust materials, such as wood or fiber cement, have a higher chance of accommodating new starter strips. However, if the existing siding is thin or in poor condition, it may not provide a stable base for the starter strips.
- Aesthetics and Longevity: Installing new siding without removing the existing siding will result in a thicker wall profile. This can affect the overall aesthetics of your home, especially if the existing siding is already thick. Additionally, layering siding can reduce the lifespan of the new siding as it may create a trapped moisture environment, leading to potential rot, mold, or mildew issues.
Proper Installation Process:
If, after considering the factors mentioned above, you determine that it is feasible to install starter strips over existing siding, it is crucial to follow a proper installation process:
- Securely Attach Starter Strips: Ensure that the starter strips are securely fastened to the wall, ensuring they can support the weight of the siding panels. This can be achieved by using screws or nails designed specifically for siding installations. It is essential to secure the starter strips at appropriate intervals, as recommended by the siding manufacturer.
- Allow Proper Drainage: When installing starter strips over existing siding, it is vital to ensure proper drainage to prevent water from getting trapped between the layers. This can be achieved by creating weep holes or providing a sufficient gap between the starter strip and the existing siding to allow water to escape.
- Check for Level and Plumb: Throughout the installation process, it is essential to regularly check for level and plumb. This will ensure that the siding panels subsequently installed align correctly and result in a visually pleasing final product.
While it is possible to install starter strips over existing siding in certain situations, it is crucial to consider the condition and type of existing siding, aesthetics, and proper installation techniques. If you have any doubts or concerns, consulting with a professional siding contractor is recommended. Ultimately, ensuring a sturdy and long-lasting siding system should be a priority, and sometimes that may involve removing the existing siding before installing new starter strips.