A Gig Harbor home left vacant over winter. A supply line fitting failed behind the kitchen wall while the owners were away. By the time it was found, standing water in the crawl space had been saturating floor joists, rim joist, and subfloor sheathing for an estimated three weeks. This is what water damage reconstruction looks like when the structural framing is the problem — not just the floor finish.
The owners returned from an extended trip to find the kitchen floor soft underfoot and a musty smell throughout the main level. A plumber located and repaired the failed compression fitting on a supply line behind the kitchen wall within hours. The water source was fixed. What wasn't fixed was everything downstream: standing water that had pooled in the crawl space, soaked into 14 floor joists over their full 16-foot span, saturated the rim joist along the kitchen wall, and caused OSB subfloor sheathing to delaminate in two bays.
Water damage reconstruction in Gig Harbor and across the greater Pierce County area most often requires two separate contractors: a mitigation company to extract water and dry the structure, and a licensed general contractor to assess and repair what the water actually damaged. The plumber fixed the source. The mitigation company extracted and dried. APCON LLC handled the structural reconstruction — the part most homeowners don't think about until the floor starts moving.
The mitigation company had completed extraction and drying — their clearance report showed ambient humidity within acceptable range. Our diagnostic began with a full crawl space moisture meter survey at every joist in the affected zone. Despite clearance for atmospheric moisture, seven joists were still reading above 19% MC at mid-span. Structural probe testing on those joists showed surface fiber compression — early-stage compression failure from prolonged saturation. Seven more joists read dry but had visible deflection exceeding L/360 from sustained load during the saturation period.
The kitchen-side rim joist had been the primary water contact point — the supply line ran through the rim joist cavity. That entire 18-foot run showed structural compromise and was condemned for replacement. Subfloor OSB in two bays had delaminated from the face — it had not re-bonded during drying and could not be refastened reliably. Two full sheets required replacement. A third sheet was borderline; probe testing confirmed adequate remaining structural integrity and it was left in place.
Written scope delivered to the homeowners and their insurance adjuster the day after the diagnostic visit. Seven joists requiring full replacement, seven requiring sistering, 18 LF rim joist replacement, two subfloor bays, and vapor barrier replacement. The adjuster requested one scope clarification on the vapor barrier line item — addressed same day with documentation from the mitigation report showing the original barrier had been displaced during water extraction.
Water damage reconstruction at the structural level is sequenced work. You cannot sister a joist to a compromised rim joist. You cannot fasten subfloor sheathing to joists that aren't at correct elevation. Every scope item has a dependency — the sequence determines the outcome.
Structural reconstruction completed in 10 working days. The floor finish contractor — engaged directly by the owners — was able to start the kitchen floor replacement the following week on a confirmed-flat, confirmed-dry substrate. No surprises on their end, which is the point.
Insurance adjuster approved the scope as submitted. No change orders. The written scope delivered at day two was the scope executed — because the diagnostic was forensic, not visual. Everything that needed replacement was in the original scope; nothing was added after work began.
Total project value: $26,800 lump-sum. Five-year written guarantee on all replaced and sistered framing. The $350 diagnostic fee was credited in full toward the repair contract.
Saturated framing fails slowly — sometimes months after the event. A $350 structural diagnostic tells you exactly what was compromised and what it costs to fix permanently, before your floor finish contractor starts on top of a broken substrate.
253-891-9622