--- title: "Building Materials That Hold Up Near the Chesapeake Bay | TBG" description: "Decking, fasteners, siding, trim and windows that hold up to salt air and humidity near the Chesapeake, and how they affect Critical Area lot coverage." url: https://thebrettgroup.com/guides/chesapeake-coastal-building-materials/ last_updated: 2026-10-13 --- [TBG](https://thebrettgroup.com/) / [Home Remodeling](https://thebrettgroup.com/remodeling/) / Materials guide Local guide · Anne Arundel County · October 2026 # Materials that hold up near the Chesapeake Salt air, humidity, summer heat and freeze-thaw winters are hard on houses near the Bay. Choosing the right decking, fasteners, siding and windows up front saves years of maintenance. Get matched with a builder who knows this - **316**: Stainless grade for the harshest salt exposure - **HDG**: Minimum for connectors in treated lumber - **Pavers**: Still count as Critical Area lot coverage - **Brackish**: Less salty than the ocean, still hard on metal The Chesapeake is brackish rather than full ocean water, but homes close to it still deal with airborne salt, high humidity and mildew, hot summers and freeze-thaw cycles. The closer you are to the water, the more these choices matter. ## 1. Fasteners and connectors: the hidden failure point Modern pressure-treated lumber is more corrosive to steel than older treatments, and salt air speeds that up. Simpson Strong-Tie, a leading maker of structural connectors, classes salt-air and salt-splash locations as its harshest "ocean/water front" exposure. Practical rules: use connectors and fasteners rated for treated lumber (**hot-dip galvanized** at a minimum), use **stainless steel** (type 316 is the marine grade) for decks, docks and railings near the water, never mix metals that react with each other, and **don't paint stainless**, since damaged paint traps moisture against it. Ask your contractor which coating they are using and why. ## 2. Decking **Pressure-treated pine** costs least up front but needs regular cleaning and sealing. **Cedar** looks great and weathers gray, with more upkeep near the water. **Composite and PVC** boards resist rot and mildew and need little more than washing; they can get hot in full sun, so lighter colors are worth considering. Whatever the surface, the frame underneath is usually pressure-treated, so fasteners and connectors (above) still matter. **Critical Area note:** solid, impermeable decks count toward lot coverage near the water; see our [Critical Area guide](https://thebrettgroup.com/guides/building-near-the-water-critical-area/). ## 3. Siding and trim **Fiber cement** siding resists rot, insects and moisture and holds paint well. **Vinyl** is the lowest-maintenance budget option. **Cedar** fits historic and shingle-style homes but needs a maintenance plan. For trim, **PVC or composite** avoids the rot that wood trim gets at corners and near the ground. In the Annapolis historic district, exterior material changes need approval first, and fiber-cement and vinyl siding are not considered appropriate; see our [historic district guide](https://thebrettgroup.com/guides/annapolis-historic-district-renovation/). ## 4. Windows and doors Look for vinyl, fiberglass or clad-wood frames, and ask for corrosion-resistant hardware on homes close to the water. Proper flashing and sill pans matter as much as the window itself, because wind-driven rain is the usual cause of rot around openings. ## 5. Hardscape and drainage Patios, walkways and driveways near the water count toward Critical Area lot coverage, and **pavers and even permeable pavement still count**. Good grading and gutters that carry water away from the foundation protect basements and crawl spaces in the county's wet springs and humid summers. ## 6. Inside the house Humidity is the Chesapeake's other constant. Finished basements and crawl spaces benefit from dehumidification, moisture-resistant drywall and flooring rated for below-grade use, and bathrooms need exhaust fans that actually vent outside. ## Where this comes up most [Annapolis →](https://thebrettgroup.com/remodeling/annapolis/) · [Edgewater →](https://thebrettgroup.com/remodeling/edgewater/) · [Shady Side →](https://thebrettgroup.com/remodeling/shady-side/) · [Cape St. Claire →](https://thebrettgroup.com/remodeling/cape-st-claire/) · [Deale →](https://thebrettgroup.com/remodeling/deale/) · [Gibson Island →](https://thebrettgroup.com/remodeling/gibson-island/) ## Projects we match - [Decks & exteriors](https://thebrettgroup.com/remodeling/decks-exteriors/anne-arundel/): Decks, porches, siding, windows and roofing. - [Additions](https://thebrettgroup.com/remodeling/additions/anne-arundel/): Bump-outs, second stories and in-law suites. - [New custom homes](https://thebrettgroup.com/remodeling/custom-homes/anne-arundel/): Build on your lot with a registered Maryland home builder. ## Common questions ### What deck fasteners should I use near the Chesapeake Bay? Use fasteners and connectors rated for pressure-treated lumber, hot-dip galvanized at a minimum, and stainless steel (type 316 is the marine grade) close to the water. Do not paint stainless hardware. ### Is composite decking better near the water? It resists rot and mildew and needs little maintenance, which suits humid waterfront sites, but it can get hot in full sun and the framing underneath still needs the right fasteners. ### Do pavers count as lot coverage in the Critical Area? Yes. Pavers, gravel and even permeable pavement count toward lot coverage within 1,000 feet of tidal water. ### What siding lasts best near the Bay? Fiber cement and vinyl resist moisture and rot well; cedar suits historic homes but needs regular maintenance. Use PVC or composite trim to avoid rot at corners and near the ground. ## Official sources [Simpson Strong-Tie: corrosion guidance for connectors and fasteners](https://www.strongtie.com/solutions/corrosion/wood-connectors-fasteners) · [Maryland Critical Area Commission: CA 101 (PDF)](https://dnr.maryland.gov/criticalarea/Documents/County-Training_CA-101.pdf) · [Anne Arundel County: Critical Area](https://www.aacounty.org/node/7067) This guide is general information, not legal or engineering advice. Rules and maps change; confirm the requirements for your property with the permit office before you design or sign a contract. ## More local guides [Renovating or adding on in a flood zone in Anne Arundel County](https://thebrettgroup.com/guides/flood-zone-renovation-anne-arundel/) · [Building or adding on near the water: the Critical Area explained](https://thebrettgroup.com/guides/building-near-the-water-critical-area/) · [Remodeling ideas for Anne Arundel County's most common house types](https://thebrettgroup.com/guides/remodeling-anne-arundel-house-types/) · [Septic upgrades and Bay Restoration Fund grants in Anne Arundel County](https://thebrettgroup.com/guides/septic-upgrades-bay-restoration-fund/) · [Deck permits in Anne Arundel County](https://thebrettgroup.com/guides/deck-permits-anne-arundel/) · [In-law suites and accessory dwelling units in Anne Arundel County](https://thebrettgroup.com/guides/in-law-suites-adu-anne-arundel/) · [Energy rebates for Maryland home remodels in 2026](https://thebrettgroup.com/guides/energy-rebates-maryland-remodel/) · [Renovating a home in the Annapolis historic district](https://thebrettgroup.com/guides/annapolis-historic-district-renovation/) · [Remodeling permits in Anne Arundel County and Annapolis](https://thebrettgroup.com/guides/permits-anne-arundel-annapolis/) · [How to hire a home improvement contractor in Maryland](https://thebrettgroup.com/guides/hiring-a-contractor-maryland/)