GemRockEST. 1993
Manufacturing · Consumer

Fibreglass, brought home.

Fibreglass front doors and architectural planters, engineered and made in-house. Our door range leads the way.

EST. 1993Engineered in-house

GemRock now leads with fibreglass repair. We still manufacture doors and planters — this page covers that range.

Door, roof or bath damaged? Home & building repairs
Why fibreglass

Six reasons it beats timber and uPVC.

Outcome first, engineering as proof. Figures: to be confirmed · placeholder

Energy efficiency

Insulating foam core for lower heat loss and warmer rooms.

U-VALUE · —

Security

Reinforced, impact-resistant construction.

PAS 24 · placeholder

Durability

Won't warp, rot, rust or crack — engineered to last.

30-YR · placeholder

Low maintenance

No repainting; colour-stable, wipe-clean finishes.

NO REPAINT

Weather resistance

Holds form in heat, cold, damp and coastal air.

−20→60°C · placeholder

Design flexibility

Styles, colours, finishes and glazing to fit the home.

18 FINISHES · placeholder
Construction & engineering

Built in layers, bonded as one.

  • 01GRP skin. Glass-reinforced polymer outer that resists impact, dents and the weather.
  • 02Insulating core. A dense foam core that slows heat transfer and deadens sound.
  • 03Reinforced edge & weather seal. Engineered edges for security hardware and a tight, draught-free close.
Explore the cross-section →
Finishes & options

Colour-stable, engineered to stay that way.

Choose a finish, glazing and hardware. Finish swatches: to be confirmed · placeholder

See all options
Anthracite Forest Slate Blue Oxblood Pebble Chalk Oak Midnight Sage Copper Graphite Linen
12 of 18 shown · placeholder library

Ready to spec your door?

Tell us the opening, the style and the finish — we'll send a quote engineered to your home.

Request a door quote →