Bathroom remodeling
Separate waterproofing, plumbing, ventilation, and finishes
A bathroom proposal should make the hidden water-management work as clear as the visible tile, fixtures, and cabinetry.
Put these in the scope
- demolition and protection of adjacent rooms
- supply, drain, and fixture locations
- shower pan, waterproofing system, and flood testing
- ventilation, electrical protection, lighting, and heat
- tile layout, transitions, trim, paint, and final sealing
Ask before signing
- Which waterproofing system and installation standard will be used?
- Will plumbing locations remain or move?
- How will ventilation terminate outside?
- Who supplies each fixture and handles damaged or late materials?
Follow the work from decision to closeout
- Document the existing supply, drain, ventilation, framing, and water-damage conditions after demolition.
- Approve the shower base, waterproofing products, coverage areas, penetrations, and test method before tile begins.
- Confirm fixture operation, drainage, ventilation, sealant, and finish care before the room returns to service.
Keep evidence that matches this project
- Fixture schedule and plumbing-location plan
- Waterproofing product record and required test or inspection result
- Exterior termination record for the exhaust fan
- Final sealant, grout, fixture, and warranty documentation
Compare the same work.
Ask every bidder to price from the same drawings, product assumptions, access conditions, and responsibility list. A lower total is not directly comparable when demolition, preparation, trade work, permits, disposal, or finish repair is missing.
Related decisions
Use the estimate and jurisdiction checklists next.
Official references
- Alabama Home Builders Licensure Board: How to Hire a Builder: State consumer guidance on licensing, references, contracts, payments, and verification.
- City of Huntsville Inspection Department: Official contact and inspection information for work under City of Huntsville jurisdiction.
- U.S. EPA: Lead Renovation, Repair and Painting Program: Lead-safe renovation requirements and homeowner guidance for many pre-1978 properties.
Requirements depend on the property, scope, jurisdiction, and current rules. Verify them directly before work begins.