Reply To: External Wall Insulation – Rendering nightmare and huge bills

Camden Leaseholders’ Forum homepage Discussion Board Major Works + Estimates External Wall Insulation – Rendering nightmare and huge bills Reply To: External Wall Insulation – Rendering nightmare and huge bills


I have had a surveyor go through the details of the proposed works and he has a number of concerns which I will be running through and forwarding to Camden for their answers.
He has also directed me to the license for the product that will be used for this process and you can click here to see it-
BBA EWI certificate

Have a look through and see what other points you can find to quiz Camden on. Please also check to see if Lakehouse are even licensed to use this product. I haven’t seen them listed.

An example of items of concern is point 14.
A copy of the email that I have sent to John Rutter (liason officer) is shown below.
The fight goes on and we are getting closer to winning

Dear Mr Rutter
I am pleased to hear that the process is still open. This is a very complicated and expensive issue.
After much research and the help of a surveyor I have found the certificate for the materials that will be used (the link is below) and draw your attention to points 14 in particular. (shown below)

It is clear that a lot of preparation and surveying must be done before this process is even considered. Please confirm that all these stages and have been followed and provide me with the relevant report that this process produced.

14 Site survey and preliminary work
14.1 A pre-installation survey of the property must be carried out to determine whether repairs are required to the sheathing board or steel frame and repairs should be carried out before application of the Epsitec External Wall Insulation System. A specification is prepared for each elevation of the building indicating, for example: • position of starter tracks, cavity spacer tracks and render beads • additional reinforcing scrim at corners of openings • detailing around windows, doors and at eaves • damp-proof course (dpc) level • location and type of weather seals to be used and location of water-deflection channels • areas where suitable silicone sealants must be used • position of fire barriers and cavity fire stops.
14.2 The survey should include tests conducted on the steel frame of the building by the Certificate holder or their approved applicators (see section 15) to determine the pull-out resistance of the proposed mechanical fixings. An assessment and recommendation is made on the type and number of fixings required to withstand the building’s expected wind loading based on calculations using the relevant wind speed data for the site and the pull-out resistances (see section 7).
14.3 Surfaces should be sound, clean, and free from loose material. The flatness of surfaces must be checked; this may be achieved by using a straight-edge spanning the storey height. Excessive irregularities, ie greater than 10 mm, must be made good prior to installation to ensure that the steel frames are installed with a smooth, in-plane finished surface.
14.4 On existing buildings, purpose-made window sills must be fitted to extend beyond the finished face of the system (see section 16.7). New buildings should incorporate suitably deep sills.
14.5 Internal wet work, eg screeding or plastering, should be completed and allowed to dry prior to the application of a system.
14.6 All modifications, such as provision for fire stopping (see section 8) and necessary repairs to the building must be completed before installation commences

It is my contention that these guidelines have not been followed and that there are various reasons highlighted here to show that the buildings are not suitable for this process.

I look forward to your reply.