Three decades of fibreglass engineering.
Since 1993 we've designed and manufactured fibreglass in-house — solving hard problems for defence and industry, and now bringing that same engineering home to the front door.
One foundry. One obsession. Many applications.
GemRock was founded in 1993 on a simple conviction: fibreglass, engineered properly, outperforms the materials it replaces. Thirty years on, that conviction runs through everything we make.
We develop and manufacture in-house — from material formulation to the finished product. Nothing is outsourced to a name on a box, which is why the same standards hold whether the part is destined for a defence programme, an industrial plant, or a family's front door.
The Consumer division is the newest chapter: taking that pedigree and turning it into doors that any homeowner can buy with confidence.
From defence-grade to your doorstep.
Dates and details are placeholders — swap in your verified company history.
Founded
GemRock established to engineer fibreglass components in-house.
Industrial & defence
Trusted for demanding industrial and defence-grade applications.
Consumer division
The fibreglass door range brings the engineering home.
Three divisions
One foundry serving defence, industry and the home.
Engineering you can stand behind.
In-house, end to end
From material to finished product under one roof — consistent standards, full accountability.
Proof over promises
We show construction, sections and verified figures — never "best in the business" claims.
Built to outlast
Engineered for service life measured in decades, whatever the application.
Where our fibreglass goes.
Doors for the home
Fibreglass front & entrance doors engineered for warmth, security and a 30-year life.
Explore ConsumerIndustrial & commercial
Engineered fibreglass components for demanding industrial and commercial applications.
OverviewDefence & security
Fibreglass solutions engineered to defence-grade standards. Capability enquiries by contact.
EnquireWork with a 30-year fibreglass engineer.
Whether it's a front door or a technical enquiry, start a conversation with our team.