Water Damage & Mold Remediation in Seattle, Tacoma, Puyallup & Surrounding Areas
Interior & Exterior Mitigation for Residential and Commercial Properties
Water intrusion and hidden moisture can quickly lead to mold, structural damage, and expensive repairs. Keystone Construction LLC provides professional mitigation services designed to stop damage at the source, protect the structure, and prevent problems from coming back.
Same-day inspections available.
Call now to schedule an assessment and prevent further damage.
Service Areas
We provide water damage and mold remediation services across the Seattle metro area, including Tacoma, Puyallup, Federal Way, Seattle, Bellevue, Mercer Island, Kirkland, Renton, and Redmond.
What We Help You Fix
We address moisture and damage issues before they turn into major structural or health problems:
- Water damage from plumbing leaks, appliance failures, and unexpected water intrusion
- Mold growth caused by hidden or ongoing moisture
- Rot and deterioration inside walls, ceilings, floors, and exterior assemblies
- Moisture intrusion around windows, roofs, siding, and foundations
- Hidden damage discovered during remodeling or demolition
Early mitigation reduces repair costs and helps prevent long-term damage.
Our Mitigation Services
Interior Mitigation
- Water damage mitigation and moisture control
- Mold containment and removal (when present)
- Removal of damaged drywall, insulation, flooring, and finishes
- Professional dehumidification and air movement
- Antimicrobial and odor treatment when needed
- Preparation for repair, restoration, or remodeling
Exterior Mitigation
- Identify and stop exterior water intrusion sources
- Removal of damaged siding, trim, and exterior materials
- Repair of rot-damaged sheathing and framing
- Moisture control, sealing, and preventive protection
- Targeted demolition to access concealed damage
- Preparation for proper exterior repair or replacement
We focus on resolving the underlying moisture issue, not just covering up visible damage.
Our Mitigation Process
- Inspection and assessment – Identify moisture sources, affected areas, and the full extent of damage
- Moisture detection – Measure moisture levels and determine where water is traveling or trapped
- Containment (if needed) – Prevent mold or contaminants from spreading to unaffected areas
- Removal and drying – Remove damaged materials and dry the area thoroughly
- Stabilize and prep for repair – Leave the space ready for restoration or remodeling
Mold Testing and Fast Results
If mold is suspected, we offer professional mold testing to help confirm what’s present and guide the right mitigation approach.
- Air and surface sample collection
- Lab-analyzed results typically available within about 24 hours
- Clear recommendations based on findings
Testing helps avoid unnecessary demolition and supports a targeted mitigation plan.
Common Problem Areas
Interior: bathrooms, showers, kitchens, laundry rooms, basements, crawl spaces, attics, ceiling cavities, and areas impacted by leaks
Exterior: windows, doors, siding, roof and flashing transitions, decks and balconies, foundation walls, and exterior penetrations
Why Choose Keystone Construction LLC
- Licensed, bonded, and insured
- Residential and commercial experience
- Interior and exterior mitigation expertise
- Honest recommendations with no unnecessary upselling
- Clean, organized, professional job sites
- Clear communication from start to finish
Schedule an Inspection
If you suspect water damage or mold, acting early can save time and money and prevent the problem from spreading.
Call Keystone Construction LLC today to schedule your inspection.