VELUX are a Trustmark scheme operator, so you have the additional comfort and peace of mind that Certified Installers are members of the only government-endorsed scheme for tradesmen.

VELUX Certified Installers must comply with stringent and regular checks and assessments by independent industry experts including:

  • Examination of their financial records and trading history

  • Provision of relevant documents such as public liability insurance

  • Credit checks

  • References from previous customers

Certified Installers also undergo on-site inspections to ensure that the quality of their work meets the VELUX standard and agree to a comprehensive code of practice covering conduct and workmanship.


As well as these benefits, using a VELUX Certified Installer gives you peace of mind as VELUX can act as an intermediary should any disputes arise between you and your installer. 

VELUX  Window Installers in Oxfordshire


We specialise in the installation, replacement and repair of VELUX Windows, Sun Tunnels, Blinds and Accessories.  
We are VELUX Certified Installers and members of the government endorsed Trustmark Scheme.


Blown, misted and inefficient glazing not only costs money in loss of heat but it can quickly damage the internal finish of your VELUX window.  When you come to replace your glazing its a good chance to upgrade.  We use upgrade conversion kits to allow a modern equivalent to be installed greatly improving the sound and heat insulation.
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HessianCole are proud to be fully accredited members of the VELUX Certified Installer scheme.  We were 5 Star members of the previous scheme but welcomed the new partnership as a way of providing our potential customers with the additional trust in our service.  We are VELUX fitters based in Bicester and we install, replace and repair VELUX windows, sun tunnels and blinds throughout Oxfordshire, Buckinghamshire and Northamptonshire.

Replacement VELUX Glazing
Velux Certified Installers


General Builders & VELUX Specialists

Velux Certified Installers