Seaglaze Marine Windows

What Seaglaze Marine Windows does

Seaglaze Marine Windows is a UK-based, family-owned manufacturer of bespoke marine glazing products, founded in 1970 and operating from a 10,000 sq ft factory on the Rackheath Industrial Estate near Norwich, Norfolk. The company designs and manufactures marine windows, doors, and hatches across multiple proprietary series (through-fix, clamp-in, hidden frame, concealed frame, direct bond, plant-on, weathertight, watertight, sliding, multi-fold, internal, and the lightweight GRP composite S21), serving prestige leisure boat builders (Sunseeker, Oyster, Spirit Yachts, Hardy Marine) and commercial workboat builders (CTruk, Diverse Marine, Goodchild Marine, Meercat, AMC, Ribcraft, Alicat, Wight Shipyard, Orkney Boats). Approximately 50 staff produce roughly 100 windows, hatches and doors per week.

The underlying technology centres on aluminium frame fabrication with combined anodising and powder coating for corrosion resistance, CNC routing for precision templating, 3D printing for prototyping, and a patented Concealed Frame Window design. Vertical integration is provided through the wholly-owned sister company Specialist Toughened Glass (STG), which operates an on-site glass toughening plant delivering toughened, laminated, and digitally printed marine glass with short lead times. The product range carries ISO 9001:2015 certification, with type approvals including DNV (Series 24 door), RINA (Series 28 door), Bureau Veritas (Seatite hatch), and ISO 12216 / 94/25/EC (Moonlight hatch range).

Revenue is generated almost entirely through bespoke quote-based sales of one-off custom pieces or production runs to boat builders, supplemented by a Spare Parts and Repair Kits catalogue (next-working-day UK delivery) and an Emergency Marine Glass Replacement service. Pricing is quote-based with no public price list, and go-to-market combines a direct sales team, four major UK boat shows, a Boat Owners Clubs & Associations aggregation programme for private owners, and direct delivery via TNT courier or company vans. The company has remained under Clayton family ownership since the 1990s with Alastair Clayton as Managing Director, and discloses no external investors, funding rounds, or revenue figures.

Name

Seaglaze Marine Windows

Legal name

Seaglaze Marine Windows Limited

Website

https://seaglaze.co.uk

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

51–100 employees

Short description

Seaglaze Marine Windows is a UK family-owned manufacturer (founded 1970, Norwich) of bespoke marine windows, doors, and hatches for commercial workboat builders, prestige leisure boat builders, and private boat owners, with vertical integration through sister company Specialist Toughened Glass.

Ownership category

akta.pro rank

Product category

Marine Glazing Manufacturing

NAICS

Ship Building and Repairing (336611)

SIC

Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Accommodation & Interior Outfit (Cabins, Galleys, Sanitary, Furniture) (IMAJAIAF)

Keywords

• Marine windows
• Marine doors
• Marine hatches
• Bespoke marine glazing
• Boat builder supplies

Headquarters

HQ city

Norwich

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Bespoke Marine Windows, Doors, and Hatches: Made-to-order products for boat builders and private boat owners. Seaglaze manufactures custom marine glazing solutions including through-fix windows, clamp-in windows, hidden frame windows, weathertight doors, watertight doors, sliding doors, and hatches. Products are sold as one-off custom pieces or in production runs for boat builders.
2. Emergency Glass Replacement Service: Rapid replacement service for window breakage. Uses on-site glass toughening plant to provide quick turnaround for one-off custom pieces or multi-pane production orders.
3. Spare Parts and Repair Kits: Pre-designed kits including items frequently requested for repairs such as installation kits, catch kits, screw covers, sliding window spares, door kits, and hatch spares.

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Seaglaze Marine Windows manufactures bespoke marine windows, doors, and hatches from its 10,000 sq ft factory in Norwich, UK. The company specialises in made-to-order products including through-fix, clamp-in, hidden frame, concealed frame, and direct bond windows; weathertight, watertight, sliding, multi-fold, and internal doors; and standard, Seatite, and Moonlight hatches. With approximately 50 staff, the company produces around 100 windows, hatches, and doors per week for boat builders and private boat owners in the UK and abroad.

Product overview

Seaglaze Marine Windows is a UK-based manufacturer of bespoke marine glazing products, offering three core product lines: Marine Windows (through-fix, clamp-in, hidden/concealed frame, direct bond, and plant-on window types across multiple series), Marine Doors (weathertight, watertight, sliding, multi-fold, internal, and lightweight composite doors), and Marine Hatches (standard weathertight hatches, Seatite watertight flush hatches, and Moonlight premium hatches). The company also provides spare parts, repair kits, and emergency glass replacement services. Products are manufactured at the company's 10,000 sq ft facility in Norwich with in-house capabilities including glass toughening, powder coating, and CNC machining. Seaglaze produces approximately 100 glass windows, hatches and doors each week for prestige boat builders throughout the UK and abroad.

Differentiator

Problem solved

Functional benefit

Brands

• Specialist Toughened Glass (STG): Sister company within the Seaglaze Group providing dedicated toughened, laminated and digital glass printing services for the marine industry
• Series 29
• Series 28
• Series 16 Concealed Frame
• Series 15 Hidden Frame
• Seatite Hatches
• Moonlight Hatches

Products and services

• Marine Windows Bespoke marine windows in multiple configurations including Through Fix (Series 1-5), Clamp-In (Series 10-11), Hidden Frame (Series 15), Concealed Frame (Series 16), Direct Bond, and Plant-On styles, ranging from lightweight inland/coastal applications to heavy-duty offshore commercial use.
• Marine Doors Comprehensive range of marine doors including weathertight doors (Series 21, 22, 24, S21 Composite), watertight doors (Series 28), sliding doors (Series 23, 25), multi-fold doors (Series 27), and internal doors (Series 29) for commercial and leisure vessels.
• Marine Hatches Marine hatches including Standard Hatches (Series 52-54), Seatite Watertight Flush Fitting Deck Hatches (round, square, oval), and Moonlight Hatches and Portlights (Offshore, Powerboat, Compact Flush, Military), certified to EC and ISO standards.
• Spare Parts and Repair Kits Comprehensive range of spare parts and repair kits including installation kits, catch kits, screw covers, sliding window spares, and door and hatch kits, with next working day UK mainland delivery for most items.
• Emergency Marine Glass Replacement Service Rapid replacement service for broken marine glazing using an on-site glass toughening plant to provide quick turnaround for one-off custom pieces or multi-pane production orders.
• Series 16 Concealed Frame Window Patented window frame giving flush bonded glass appearance with clamp-in installation benefits. Improved double-glazed unit support with manufacturing efficiencies. Frames only visible inside, all anodised and powder coat painted in-house.
• S21 Composite Door Lightweight weathertight door built in partnership with CTruk using GRP composite with RTM core, providing an average 7kg weight saving per door over the aluminium equivalent. Available in clamp-in and through-fixed frame configurations.
• Series 27 Multi-fold Doors Multi-fold door for large openings on private or leisure vessels, maximising space and light. Uses aluminium track allowing doors to glide open and fold back. Made bespoke with customisable number of panes (2-6), folding pattern, furnishings and glazing.

Quantifiable outcome

• Approximately 100 windows, hatches and doors produced per week
• +2 more outcomes

Named customers12 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• CTruk BoatscoreStrategic or Co-development Partner · 24 June 2019Working in partnership with CTruk to provide weight saving solutions. Seaglaze's NEW lightweight S21 Composite Door was designed in partnership with CTruk, offering GRP composite door leaf with RTM core for 7kg weight savings per door over aluminium equivalent.
• Diverse MarinecoreStrategic or Co-development Partner · 11 June 2019Preferred glazing supplier for Diverse Marine's 24m Chartwell vessel. First order for Seaglaze's new concealed frame windows alongside hatches and doors. Diverse Marine states Seaglaze's ethos matches their own in delivering superior build-quality.
• Goodchild Marine ServicescoreStrategic or Co-development Partner · 1 January 1996Longstanding supplier relationship since 1996. Seaglaze provides windows, hatches and doors for Goodchild Marine's commercial craft including ORC patrol vessels and hybrid pilot boat Leader.
• Specialist Toughened Glass (STG)coreTechnology or IntegrationSister company within Seaglaze Group. Delivers dedicated, high-quality, quick turnaround glass manufacturing service for Seaglaze Marine Windows. Enables in-house toughening, laminating, and digital printing on glass using inorganic ceramic inks.
• Walker Marine DesignminorStrategic or Co-development PartnerAward-winning naval architects who partnered with AMC on the 14m FiFi fire-fighting vessel fitted with Seaglaze products.
• AnglocominorStrategic or Co-development PartnerUK firefighting supplier and build partner for AMC's 14m FiFi fire-fighting vessel.
• British MarineminorOthersSeaglaze is a proud member of British Marine and upholds their standards of conduct.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Bohamet: Polish manufacturer of marine windows, doors, and glazed superstructure elements for shipyards - comparable product breadth serving commercial vessel newbuilds across Europe.
• Heaterkraft Marine: Scandinavian marine window and door supplier to the Nordic commercial and offshore boat building market - directly comparable product mix for patrol, pilot and offshore vessels.
• Trend Marine Products: UK-based manufacturer of marine windows, doors, and hatches serving the same commercial and leisure boat builder customer base with overlapping bespoke and production-run glazing solutions.
• Diamond Sea Glaze: Canadian manufacturer of marine windows, doors, and aluminum closures for commercial and patrol vessels - direct competitor in custom marine glazing with overlapping type approvals (ABS/Lloyds-class work).
• Freeman Marine Equipment: US-based manufacturer of marine windows, doors, and hatches for commercial vessels and yachts - directly comparable product portfolio (watertight/weathertight doors, portlights, hatches) and similar mixed custom/production model.

Regional players

• Romag: UK-based specialist glass manufacturer (toughened, laminated, security glass) that supplies marine and architectural markets - less boat-builder-direct than Seaglaze but competes for the toughened glass step in the same value chain.

Broad incumbents

• Pilkington Marine (NSG Group): Global marine glazing arm of NSG/Pilkington, supplying marine glass and integrated window systems to shipyards worldwide - much broader scope but overlaps in certified marine windows and architectural glazing.
• Saint-Gobain Marine: Marine glass and integrated glazing solutions division of the global building materials group, supplying certified marine windows/glazing to large commercial shipyards as part of a broader portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/SeaglazeMarine
• Facebookfacebook.com/SeaglazeMarineWindows
• LinkedInlinkedin.com/company/seaglaze-marine-windows-limited

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 records

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 Seaglaze Marine Windows