Deck Wood Rot Repair & Structural Restoration
in Olympia & Shelton

The most reliable method is the 'Screwdriver Test'—push a flathead screwdriver into suspect areas. If it penetrates more than 1/4 inch with little resistance, you have rot. Other warning signs include visible fungal growth or mushrooms (especially near posts and joists), soft spots that feel spongy underfoot, and discoloration ranging from dark brown to white. In the Pacific Northwest, pay special attention to areas where water collects or where wood contacts the ground.

Not always. Surface rot (affecting only the top layer) is often cosmetic and can be treated with epoxy fillers. However, core rot that penetrates deep into the wood IS a structural issue. Location matters too—rot in load-bearing components like ledger boards, joists, and posts is always structural, while rot in railings or decorative trim is less critical but still needs attention. We provide honest assessments and will tell you when repair vs. replacement is the right call.

Yes, in most cases we can save your deck. Our primary technique is 'sistering'—bolting a new pressure-treated joist alongside the damaged one to restore structural integrity. For partial damage, we can cut out the rotted section and splice in new lumber with proper hardware. These cost-effective safety fixes are often 60-70% less than full deck replacement while meeting all code requirements.

Our wet climate creates perfect conditions for wood rot. The main culprits are: standing water from poor drainage or clogged gaps between deck boards; lack of airflow underneath the deck (especially common with low-clearance decks); and failing sealant or stain that allows moisture penetration. We see the most damage on north-facing decks and in shaded areas where wood stays damp longer. Proper flashing, ventilation, and maintenance can prevent most rot issues.

Structural deck repair costs depend on damage extent and accessibility. Our structural inspections start at $150 and are credited toward any repair work. Joist repairs typically start at $350 per joist for sistering. Post replacement runs $400-800 depending on height and accessibility. Beam repairs vary widely based on size and location. We provide detailed written estimates so you know exactly what to expect—no surprise charges.

We strongly advise against using a deck with rotted posts until it's inspected. Rotted posts can fail suddenly under load, creating serious collapse risks. Even if the deck seems stable, weakened posts can't properly distribute weight, putting stress on other components. If you suspect post rot, avoid gathering groups on the deck and call us for an emergency inspection. We offer same-day emergency bracing services when needed.

We use high-strength epoxy wood fillers for appropriate applications—primarily cosmetic repairs and non-critical areas. For structural components like joists, beams, and posts, replacement with pressure-treated lumber is always the right choice. Epoxy fillers work well for surface damage, screw holes, and minor checking, and can last 10+ years when properly applied. We'll always recommend the most durable long-term solution for your specific situation.

Absolutely. All our structural repairs meet or exceed current IRC (International Residential Code) and Washington State building codes. We use only code-compliant hardware including proper joist hangers, post bases, and flashing. For major repairs, we can coordinate with Thurston County inspectors to ensure your deck passes inspection. You'll receive a detailed safety report documenting all work performed and materials used.