Moisture-safe drywall — Wellington & NZ
Specialist wet-area plasterboard systems, backer boards and waterproof finishes for bathrooms, laundries and kitchen splash zones.
Overview
Noraventi installs moisture-rated plasterboard and wet-area systems designed for longevity. We pair certified backer boards with correct membranes and finishes to prevent mould, delamination and structural damp in high-humidity rooms.
- Installation to NZ building code and MBIE guidance for wet areas
- Coordinated waterproofing and tiling interfaces
- Long-life finishes including water-resistant paints and tiles
Recommended systems & materials
We recommend systems chosen by room use and finish — tile, paint or composite panels.
| Area | Substrate | Membrane | Finish |
|---|---|---|---|
| Shower enclosures | Cementitious backer board (12mm) | Bonded waterproof membrane (liquid or sheet) | Tile + epoxy grout |
| Bathroom walls (non-shower) | Moisture-resistant plasterboard (MR) | Waterproof primer + membrane at junctions | Water-resistant paint |
| Laundry splash zones | MR board or cement backer | Liquid applied membrane | Tiles or hard-wearing paint |
All installations follow manufacturer tolerances and NZBC cladding & wet-area guidance. We coordinate with plumbers and tilers to ensure watertight transitions.
Why choose moisture-rated board?
- Reduced swelling and faster drying after minor ingress
- Improved adherence for tiles and adhesives
- Better performance behind cabinetry and benches
Gallery — wet-area installs
Case study — Island Bay bathroom renewal
We replaced damaged plasterboard, installed cementitious backer board, applied a two-coat waterproofing system and tiled the shower. Coordination with the tiler and plumber kept downtime minimal while ensuring a certified waterproofing system.
- Scope: full wet-area remake
- Outcome: certified waterproof junctions, improved ventilation strategy
- Client note: "Fast, tidy and communicative throughout."
"Noraventi understood the technical aspects and made practical recommendations that saved time and avoided future issues."
FAQ & technical notes
Ready to protect your wet areas?
Get a tailored recommendation and an on-site assessment. We work across Wellington and New Zealand.