How many sheets of gib do I need for a room?

Measure your total wall area (perimeter × height) and ceiling area. Divide by 2.88 m² (standard 2400×1200 sheet) and add 15–20% for waste and cuts. A typical 3.5m × 4m room with 2.4m stud is about 12–14 sheets for walls, plus 5 ceiling sheets.

What is Level 4 stopping in NZ?

Level 4 (NZS 4334) is the standard for most NZ residential interiors — two coats of stopping compound sanded smooth, ready for paint with flat or low-sheen finish. Level 5 adds a skim coat for high-gloss or critical lighting situations. Level 3 is basic, used in garages or utility spaces.

How much does gib stopping cost per m² in NZ?

Gib board supply and fix costs $45–$65/m² installed. Stopping adds $18–$42/m² depending on level. A full Level 4 gib, stop and sand job (supply + install) typically runs $65–$110/m² in NZ. Auckland costs 10–15% more.

What is the difference between standard gib and Noiseline?

Standard 10mm Gib is the most common residential plasterboard. Noiseline (13mm) has improved acoustic ratings for party walls and bedroom partitions. Aqualine is moisture-resistant for bathrooms. Braceline provides additional racking resistance for earthquake zones. All are made by Winstone Wallboards in NZ.

Does gibbing require a building consent?

Internal gib replacement (like-for-like) is generally exempt from consent. New partition walls and changes to fire-rated or bracing walls may require consent. Always confirm with your local council if unsure.

Gib Calculator NZ 2026 — Sheets, Stopping Coats & Cost Estimate

Free NZ gib board calculator — enter your room dimensions to get sheet count, stopping coats, scrim, materials and installed cost estimate. Includes NZ pricing.

Gib & Plasterboard in NZ — What You Need to Know

Gib is New Zealand's dominant plasterboard brand (manufactured by Winstone Wallboards, a Fletcher Building subsidiary). In NZ trade, "gib" and "plasterboard" are used interchangeably — if a quote says "gib and stop", it means supply and install plasterboard and apply stopping compound.

NZ Gib Sheet Types

Type	Thickness	Use	Approx cost/sheet
Standard	10 mm	General walls & ceilings	$18–$25
Noiseline	13 mm	Party walls, bedrooms	$28–$38
Aqualine	10 mm	Bathrooms, wet areas	$22–$30
Braceline	10 mm	Seismic bracing walls	$28–$36
Fyreline	13 mm	Fire-rated walls	$32–$42

Stopping Levels Explained

Level	Description	When used
Level 3	One coat, unfilled — not ready to paint	Garages, utility areas
Level 4	Two coats + sand — standard finish	All NZ residential interiors
Level 5	Three coats + skim — critical finish	High-gloss paint, feature walls

Typical Gib & Stopping Costs NZ 2026

Scope	Cost range (ex GST)
Gib supply and fix only	$45–$65/m²
Stopping Level 4 only	$25–$35/m²
Full gib + Level 4 stop + sand	$70–$100/m²
Full gib + Level 5 premium	$90–$130/m²

All prices ex GST. Auckland 10–15% above average. Christchurch and Wellington within 5% of average. Smaller cities typically 5–10% below.

Gib & Plasterboard Calculator NZ — Sheets, Stopping & Labour Cost

Gib & Plasterboard Estimate

Gib & Plasterboard in NZ — What You Need to Know

NZ Gib Sheet Types

Stopping Levels Explained

Typical Gib & Stopping Costs NZ 2026

Frequently Asked Questions