What Winstone Wallboards does

Winstone Wallboards Limited is New Zealand's only manufacturer of gypsum plasterboard and the country's largest marketer of plasterboard, drywall systems, and related products, operating since 1927 under the GIB® brand. The company serves the New Zealand building and construction industry — including builders, contractors, fixers, architects, engineers, and specifiers — via a horizontal, specification-driven model that ties its products to New Zealand Building Code compliance, fire rating, acoustic, bracing, intertenancy, and wet-area requirements.

Its core technology is gypsum-based plasterboard manufacturing paired with a deep portfolio of branded sub-systems: GIB Weatherline® for exterior cladding, GIB Aqualine® and GIB Toughline® Aqua for wet areas, GIB Noise Control® and GIB Fyreline® for acoustic and fire performance, GIB EzyBrace® for structural bracing, GIB Curveline® for curved surfaces, and GIB X-Block® / Barrierline® for intertenancy separation, alongside framing systems (GIBFix®, GIB Rondo®), jointing compounds, fasteners, sealants, trims, and finishing accessories. This product surface is supported by proprietary specification software — the GIB® Bracing Calculator, GIB® System Selector, CAD Library, and a technical Literature Library — which are used by architects and engineers at the design stage.

The business model is a hardware-sales manufacturer-distributor: products move exclusively through merchant and building supply channels rather than direct retail or e-commerce, with a dedicated sales line (0800 475 475) for merchant customers and nationwide area sales coverage. Revenue is generated per unit of plasterboard, system component, and accessory sold, plus ancillary specification-support services. Pricing is not publicly disclosed and the company is privately held with no disclosed revenue, funding, or parent entity, operating four production/distribution nodes (Auckland, Tauranga, Lower Hutt, Christchurch) and a new GIB® plasterboard plant under development in Tauranga.

Name

Winstone Wallboards

Legal name

Winstone Wallboards Limited

Website

https://gib.co.nz

Company type

Private

Founded year

1927

Operating status

Operating

Headcount range

101–250 employees

Short description

Winstone Wallboards is New Zealand's only plasterboard manufacturer, producing the GIB® range of gypsum plasterboard, drywall systems, and specialized fire, acoustic, bracing, and exterior products. The privately held firm serves the nationwide building and construction industry exclusively through merchant/building supply distribution.

Ownership category

akta.pro rank

Product category

Building Materials (Plasterboard and Drywall Systems)

NAICS

Gypsum Product Manufacturing (327420), Gypsum Product Manufacturing (32742), Lime and Gypsum Product Manufacturing (3274)

SIC

Concrete, Gypsum & Plaster Products (3270)

akta.pro primary industry

Gypsum Board & Drywall Panels (IMADAEAA)

akta.pro secondary industries

Plaster (Gypsum/Lime/Cement) & Basecoat Systems (IMADAEAC), Ceiling Boards, Plasterboard Tiles & Suspension-Compatible Gypsum Products (IMADAEAM), Prefabricated Gypsum/Plaster Architectural Elements (Cornices, Ceiling Medallions, Moldings) (IMADAEAL), Gypsum Plasters & Specialty Additives/Modifiers (IMADAEAG)

Keywords

• Plasterboard manufacturing
• Drywall systems
• Gypsum wall linings
• Building materials
• Construction products

Headquarters

HQ city

Auckland

HQ country

New Zealand

HQ region

Oceania

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales, Others

Revenue model

1. Plasterboard and Drywall Products: Manufacture and sale of GIB® plasterboard and related drywall products through merchant/building supply distribution channels across New Zealand
2. Technical Systems and Accessories: Sale of associated systems including framing systems (GIBFix®), metal batten systems (GIB Rondo®), jointing compounds, screws, tapes, and trims
3. Specialized Building Systems: Specialized systems including fire-rated systems, acoustic/noise control systems, wet area systems, bracing systems, and exterior weatherline systems

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

Winstone Wallboards manufactures and markets GIB® brand gypsum plasterboard wall-linings and drywall systems in New Zealand. Its product portfolio spans specialized plasterboard (fire-rated, acoustic, wet area, exterior, impact-resistant, wide-format, bracing) plus complementary systems including GIBFix® framing, GIB Rondo® metal batten systems, jointing compounds, adhesives, fasteners, sealants and trims. Distribution is exclusively through merchant/building supply channels across New Zealand, supported by digital specification tools (System Selector, Bracing Calculator, CAD Library).

Product overview

Winstone Wallboards operates as New Zealand's only plasterboard manufacturer, offering a comprehensive portfolio of GIB® branded construction products. The core offering centers on GIB® Plasterboard wall-linings, complemented by specialized product sub-brands addressing specific construction requirements: GIB Weatherline® for exterior systems, GIB Aqualine® and GIB Wet Area Systems for moisture-prone areas, GIB Noise Control® and GIB Fire Rated Systems for acoustic and fire performance, GIB Curveline® for architectural curved surfaces, and GIB EzyBrace® Systems for structural bracing. Additional support products include GIBFix® framing systems, GIB Rondo® metal batten systems, jointing compounds, fasteners, sealants, and finishing accessories. The portfolio is supported by digital tools including the GIB® System Selector, GIB EzyBrace® Design Software, CAD Library, and comprehensive literature resources. Manufacturing facilities are located in Auckland, Wellington, Christchurch, and Tauranga.

Differentiator

Problem solved

Functional benefit

Products and services

• GIB® Plasterboard Standard and specialized gypsum plasterboard wall-linings manufactured in New Zealand for residential and commercial construction, providing noise control, fire resistance, and structural bracing properties.
• GIB Weatherline® Exterior cladding plasterboard system designed for weather protection and external wall applications in New Zealand construction.
• GIB Curveline® Flexible plasterboard designed for forming concave and convex curves in interior wall and ceiling linings, used by builders and contractors for architectural curved features.
• GIB Aqualine® Wet area plasterboard specifically engineered for moisture-prone environments such as bathrooms and laundries.
• GIB Noise Control® Systems Acoustic/sound insulation systems designed to reduce noise transmission between rooms and spaces in residential and commercial buildings.
• GIB Fire Rated Systems Fire resistant wall and ceiling systems meeting New Zealand Building Code fire safety requirements, including GIB Fyreline® fire-resistant plasterboard.
• GIB EzyBrace® Systems Structural bracing systems for timber and steel framed buildings, including integrated bracing plasterboard and accompanying EzyBrace® Design Software for bracing calculations.
• GIB Barrierline® / GIB Intertenancy Barrier Systems Intertenancy barrier systems for terrace homes and multi-residential construction, providing fire and acoustic separation between tenancies, including GIB X-Block® membrane system.
• GIBFix® Framing Systems Metal framing systems and associated adhesives (GIBFix® All-Bond, GIBFix® One) for wall construction providing structural support and alignment.
• GIB Rondo® Metal Batten Systems Metal batten systems, perimeter channels, clips, jointers, suspended ceiling components and GIB Rail® for suspended ceiling and wall battening applications.
• Specialized GIB® Plasterboard Range Specialized plasterboard variants including GIB Noiseline® (acoustic), GIB Fyreline® (fire resistant), GIB Toughline® (impact-resistant), GIB Toughline® Aqua (impact and moisture resistant), GIB Wideline® (wide-format), GIB Ultraline® (ultra-smooth), and GIB Braceline® (integrated bracing).
• GIB® Jointing Compounds, Tapes, Trims and Adhesives Comprehensive finishing accessories including GIB® Setting Compounds, Air Drying Compounds, Patch Board, paper and mesh Jointing Tapes, Trims, Control Joints, Gapfiller, Fire Soundseal® intumescent sealant, Quiet Tie acoustic tie system, GIB-Cove® Cornice and Bond adhesive, GIB Grabber® screws and Handibrac® bracing set.
• GIB® System Selector Interactive online tool for architects, specifiers, builders and contractors to select appropriate GIB® systems based on application type (internal walls, external walls, floor/ceiling, ceilings and soffits, risers/shafts/ducts, and protection of columns and beams).
• GIB® Bracing Calculator Software Downloadable design software for calculating structural bracing requirements in timber and steel framed buildings, available for Microsoft and Mac operating systems. Used by builders, engineers, and designers to determine bracing specifications.

Quantifiable outcome

• GIB plasterboard is compostable, made from natural gypsum and 100% recycled paper
• +1 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Eagle Materials: US publicly-traded manufacturer of gypsum wallboard and related building products. Compares on core plasterboard manufacturing economics, though operates at larger scale in the North American market.
• Knauf (formerly USG Boral): Global leader in gypsum plasterboard and drywall systems with operations across Asia-Pacific including Australia. Knauf acquired USG Boral in 2022, making it the most direct multinational gypsum peer with comparable product categories (plasterboard, jointing, ceiling systems).
• National Gypsum Company: One of the largest US gypsum manufacturers offering a full portfolio of plasterboard, specialty panels (fire, mold, impact), and joint treatments. Comparable product category and systems approach, though serving the North American market exclusively.
• Fletcher Building: New Zealand's largest building materials company with plasterboard, insulation, and other construction product lines. Compares as a domestic NZ peer in building materials distribution and manufacturing, with overlapping customer base (builders, contractors, merchants).
• Siniat (Etex Group): Siniat is Etex Group's plasterboard brand operating across Europe, Asia, Africa, and Latin America. Compares to Winstone as a multi-region gypsum plasterboard manufacturer with complementary accessories, fire/acoustic systems, and technical documentation approach.
• Saint-Gobain (Gyproc): Saint-Gobain operates Gyproc, one of the world's largest gypsum plasterboard brands, with presence across multiple continents. Compares to Winstone on product category (gypsum plasterboard, drywall systems, plasters) and technical specification ecosystem, though at far larger global scale.
• Georgia-Pacific Gypsum: Major North American gypsum manufacturer with Dens® brand specialty panels (fire, moisture, impact). Comparable through extensive product sub-branding strategy similar to Winstone's GIB® portfolio depth.

Emerging players

• Fermacell (James Hardie Europe): Specializes in fibre gypsum and dry-fibre boards used as alternatives to traditional plasterboard for enhanced fire, moisture, and impact performance. Comparable as a substitute/adjacent wall lining system rather than direct commodity competitor.

Regional players

• BGC Plasterboard: Australian plasterboard and fibre cement manufacturer serving the Australian and New Zealand markets. Most relevant regional peer given geographic proximity across the Tasman, overlapping product lines (plasterboard, specialty systems), and potential indirect competition in NZ import channels.
• CSR (Gyprock): Australian building materials company with Gyprock plasterboard brand. Direct geographic peer across the Tasman with comparable building systems, specification tools, and technical documentation approach relevant to Australasian construction markets.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gibplasterboard
• Facebookfacebook.com/GIBplasterboard
• LinkedInlinkedin.com/company/winstone-wallboards

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Winstone Wallboards