VELFAC Housebuilding Approved Joiners

The VELFAC Approved Joiners Network has been established to ensure that VELFAC products are installed correctly, in order to achieve their optimum performance.

Our joiners form a vital part of our supply chain and this is the reason why a strict selection criteria is applied by VELFAC.

All joiners are put through the VELFAC Installation training program: this means that customers receive superior standards of reliable workmanship and associated peace of mind, VELFAC will issue to the customers a 6 year installation warranty upon competition of the installation of VELFAC products.

A package of services can be agreed with your Housebuilding approved joiner to suit the requirements and complexity of your window scheme.

Find your VELFAC joiner here

General installation service

It includes:

  • Correct installation of the products in accordance with VELFAC standards
  • Supply of materials for the installation, including standard fixings, standard VELFAC twist in lugs, perimeter seals in accordance with standard VELFAC tolerances.
  • Cleaning up of waste and debris
  • Sequential handover following installation


VELFAC will supply the standard twist in fixing lugs along with the supply of the windows.

Additional installation services 

  • Survey of existing openings to ascertain and agree prepared structural opening dimensions
  • Supervision of offloading of deliveries (in agreement with your Approved Joiner)
  • Checking and reporting of transport damage & quantity discrepancies
  • Supply of complementary products (eg. Rooflights)
  • Building works and other additional services

The 6 years Installation Warranty covers the General Installation Services when these are done by an Approved Joiner. Any additional services and how they are delivered are not covered by the 6 year Installation Warranty and need to be agreed between the customer and the joiner.

Should you wish to install the windows yourself, basic instructions can be found in the Installation Guide, which should be used in conjunction with Typical Building Details.