Permadoor has introduced a choice of three “eco options” to its GRP composite door range, which the company says can help specifiers improve the energy efficiency and sustainability of housing stock through improved door performance.

The options include glazing, a recycled door frame and recycled composite reinforcement. The company says the glazing option gives an average improvement in U-values of up to 0.4 W/m2K compared with the standard door glazing specification. The recycled doorframe is made from Reco22, a framing system made from 100% post-consumer PVC-U waste. Reco22 has been awarded the BRE A+ rating for all sectors including domestic housing. The company said the composite reinforcement option is a cost-effective and sustainable alternative to steel or aluminium.