Technical

Let’s Get Technical

Sierra composite doors are constructed to your individual specification using high performance modern materials with excellent energy efficient properties.

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Standards You Can Trust

  • Compliant to latest building regulations
  • PAS 23 and PAS 24 accredited
  • BSI registered company
  • Glazed units conform to BS 5713 and BS 6262
  • Conforms to British Standards

Modern Construction

Sierra’s modern composite doors are individually constructed by bonding high impact, fibreglass outer skins to PVC composite rails surrounding an inner core of thermally efficient, CFC free polyurethane foam for outstanding heat insulation and soundproofing. They will not bow, warp, crack, splinter,
dent or rust – yet retain the warmth and charm of wood
without any of the drawbacks.

Locking Systems

All doors in our range come with the Paddock Lockmaster multi point locking systems as standard. This lock carries the police preferred Secured By Design accreditation. Every locking system includes two hook locks, a deadlock and a latch mounted on an aluminium face plate. The lock is available in brown or white to suit the inside colour of the door.

Through Colour

The colour in our composite doors is not just on the surface, it runs right through the solid outer face, so there’s never any painting required. Customers can choose from a choice of Red, Blue, Green, White or Black exterior colours all with a white interior. Alternatively we offer our hand painted Rosewood and Antique Oak woodgrain effects available with matching woodgrain or white interior.

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