Retrofit Existing Decks and Patios.
Many older Portland homes have decks that are structurally sound but functionally outdated. We retrofit existing structures with modern waterproofing, new railings, and updated finishes — saving you the cost of a full rebuild.
What’s included.
Preserve existing structure
Add waterproofing to non-waterproofed decks
Replace failing flashings
Upgrade railings to current code
Save on full replacement cost
Built on three commitments.
Owner-led
Miguel Altamirano is on every project start to finish. No subcontractors, no surprises.
Certified
Westcoat and TREMCO certified installer. ICC-ES rated systems for code compliance.
Warranty
5-year workmanship warranty plus manufacturer material warranty. Best Price Guarantee.
How it works.
Audit
Inspect structure, flashing, and existing finishes.
Recommend
Outline retrofit options and savings.
Repair
Fix structural issues and flashings.
Retrofit
Add waterproofing and finishes.
Industry-leading systems.
Westcoat retrofit systems
TREMCO
Code-compliant flashing
Retrofit Existing Decks and Patios FAQ.
Serving retrofit existing decks and patios across the region.
Free estimate
Get your free estimate today.
Tell us about your project. We’ll respond within one business day with a no-pressure, detailed estimate — and our Best Price Guarantee.
- ✓ Free on-site consultation
- ✓ Detailed written estimate
- ✓ Best Price Guarantee
- ✓ Owner-led, no subcontractors