Protecting Your Home from Coastal Weather and Salt Air

Living within earshot of the ocean is a dream for many, but the reality of coastal homeownership involves a constant battle against the elements. If you live on the coast of Maine, you have to contend with nor'easters, driving rain, and the silent, highly corrosive destroyer: salt air.

If left unchecked, salt air can deteriorate metal, peel paint, and rot wood at an alarming rate. Here is how you can protect your coastal property.

The Impact of Salt Air

Salt spray doesn't just happen during storms; ocean breezes carry microscopic salt particles inland every day. When this salt settles on your home, it draws in moisture from the air, creating a corrosive brine that constantly eats away at exterior finishes and hardware.

1. Choose the Right Exterior Fasteners

In a coastal environment, standard galvanized screws and nails will rust and bleed down your siding within a year. You must use 300-series stainless steel (preferably 316 grade) for all exterior fasteners, including deck screws, siding nails, and structural bolts. While stainless steel is significantly more expensive, it is absolutely non-negotiable for coastal construction.

2. Upgrade Your Siding and Trim

Wood siding, like cedar shingles, is traditional in New England and handles coastal weather well if allowed to weather naturally or if painted meticulously. However, many coastal homeowners are switching to fiber cement siding (like HardiePlank) or high-grade vinyl. For exterior trim, PVC (cellular polyvinyl chloride) is the gold standard. It looks like wood but will never rot, warp, or cup, making it perfect for salty, wet environments.

3. Wash Your House

This is the simplest but most overlooked maintenance task. You should gently wash the exterior of your coastal home at least twice a year to remove salt accumulation. You don't need a high-pressure washer—a standard garden hose and a soft-bristle brush with a mild detergent are enough to dissolve and wash away the corrosive salt layer from your windows, siding, and metal fixtures.

4. Protect Your Windows and Doors

Coastal storms can drive rain horizontally against your home at 60+ mph. Windows and doors must be properly flashed to prevent water intrusion. Consider upgrading to impact-resistant glass, which not only protects against flying debris during nor'easters but also offers superior soundproofing against howling winds.

Additionally, check the weatherstripping annually. Salt and UV rays cause rubber weatherstripping to become brittle and crack, compromising the seal.

About the Author: Tyler Ross is an experienced contractor specializing in weatherproofing homes against the harsh Maine coastal climate.