Information for Architects

Ecoflap - retrofit energy efficiency

A black EcoFlap retrofitted to a composite door in a 1930s house.

From the EcoFlap listing on The Code Store:

Code for Sustainable Homes Credits

This airtight letter box can help contribute towards:

  • Dwelling Emission Rate (Ene1) Code for Sustainable Homes Credits

 Benefits of the EcoFlap

The EcoFlap is a cost-effective, robust and easily-fitted letter box draught excluder. The EcoFlap’s benefits to architects include:

  • firmly excluding draughts
  • holding back rain and flood water
  • eliminating rattling and flapping
  • fit and forget – no tradesman or householder training needed
  • remaining in service for years with no need for repair or replacement
  • allowing postal deliveries through without a hitch
  • returning to its vertical position every time
  • letter box works completely as normal
  • available in white, brown and black

Working so effectively and unobtrusively, the EcoFlap is a dramatic improvement on traditional brush-and-spring letter box draught excluders.

Draught proofing and energy efficiency

EcoFlap always returns to its shut position

The EcoFlap shuts behind itself as deliveries pass through without obstruction

The EcoFlap plays a role in increasing the energy efficiency of your projects, making a direct contribution to draught proofing (anecdotally, to 10 times higher than building standards demand). Elimination of letter box draughts in turn reduces the amount of heating required to maintain a comfortable temperature within a house. As many houses have their thermostat in the hallway, the space most affected by letter box draughts, a more even hallway temperature means the thermostat won’t prompt the boiler to heat up unnecessarily.

The EcoFlap is the ideal partner to standard draught proofing measures and energy monitoring systems.





  • we can deliver EcoFlaps direct to your site
  • we can work directly with your or your construction team
  • we offer bulk terms
  • we deliver anywhere in the world

For further information on specifying the EcoFlap and the terms on offer, please get in touch.