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Signs that you need to replace your siding include siding that’s warping, bubbling, or cracking; signs of rot or mold growth; fading, peeling, or chipped siding or paint; or siding that’s separating from the exterior of your house. Failing to replace your siding when it’s damaged can lead to moisture problems or structural damage, so promptly repair or replace siding as soon as you notice any of these signs.

Siding and cladding are two popular exterior wall coverings that protect homes from the elements and provide insulation, but they differ in design and application. Siding is applied directly to a home’s exterior, providing some insulation and basic shielding from the elements. In contrast, cladding is installed indirectly over furring strips, creating a ventilated air gap for enhanced insulation and moisture control.

You can put new siding over clapboards, but it’s not recommended. Some sidings, like vinyl siding, can go over clapboards with sheathing like a foam layer in between. However, it’s best to remove clapboard siding if you plan on replacing it with new siding. Burying wood clapboards underneath new siding can create risks of rot and mold, or hidden insect damage. It can also create warping issues over time. Removing clapboards allows you to properly install a new sheathing, as well as clean up the exterior wall and look for any signs of damage.

Yes, you can install siding over stucco, but it's crucial to ensure the stucco is in good condition first. Before proceeding, inspect the stucco for any signs of damage, leaks, or mold growth. If you discover water damage, mold, or have ongoing leak issues, it's recommended to remove the stucco completely. This step prevents future problems like mold and pest infestations and allows a professional to repair or replace any damaged sheathing underneath. If the stucco is sound, the installation process involves attaching furring strips to the wall's framing directly through the stucco. The new siding is then installed onto these furring strips. A professional may also need to adjust window and door openings to prevent them from being recessed behind the new siding, which can cause aesthetic issues and create potential leak points.