Short Answer
Not necessarily different materials in every case, but material selection should account for the home's exposure and the product's tested performance.
Detailed Explanation
Coastal homes don't necessarily need entirely different materials, but the selection of materials should account for the harsher environment. For roofing: higher wind-rated shingles, corrosion-resistant flashing and fasteners, and algae-resistant products. For siding: materials that resist moisture and UV exposure well — vinyl siding with UV inhibitors, fiber-cement siding for maximum durability, or engineered products designed for coastal exposure. For gutters: aluminum rather than galvanized steel, with corrosion-resistant hangers. For windows: corrosion-resistant frames (vinyl, fiberglass, or aluminum with corrosion-resistant coating). The key is selecting products whose tested performance matches the home's exposure — not just using the same products that work inland. A contractor experienced with coastal construction can recommend appropriate materials.
Why It Matters
Using inland-standard materials at the coast leads to premature failure from salt, wind, and moisture. Selecting products rated for coastal exposure extends the life of every exterior component.