Cladding systems

Cheryl Ladding made this Freedom of Information request to Sheffield City Council

This request has been closed to new correspondence from the public body. Contact us if you think it ought be re-opened.

The request was partially successful.

Dear Sheffield City Council,

Thank you for your previous reply. I am unclear as to what system is being installed.

Is it a Weber accredited system as accredited by Weber?

If sub contractors are applying it does it still class as INCA certified and protected?

I understood most systems are accredited by the ETA/BBA yet this system is not. Is that correct?

ref KM 224 P, i seem unable to find this, please provide it.
All accredited systems are on masonry walls.

OSB/3 is accredited as sheathing. It appears the use as a structural brace is not within the accreditation. Please provide the building control and BBA approval for this alternative use.

What are the projected repair and maintenance costs for this scheme. Please provide the projected costs.

Which department decided the addition of two class 3- high fire risk products complied with building regulations?
Which building regulation does this comply with?

Are the fire service aware of this increased fire risk as such schemes are causing concern in Germany.

Yours faithfully,
Cheryl Ladding

Firstpoint@sheffield.gov.uk, Sheffield City Council

3 Attachments

 
Dear Ms Ladding

Thank you for your recent email enquiry.

Your request for information has been forwarded to the appropriate officer
and you should expect to receive a reply within 20 working days.

For more information you can visit our [1]https://www.sheffield.gov.uk/foi
Please do not hesitate to contact us again if you have any further
questions or queries.

Yours sincerely,

Customer Services
Resources, Sheffield City Council
Floor 2 Howden House,
1 Union Street,
Sheffield
S1 2SH
Telephone: 0114 2734567
Email: [Sheffield City Council request email]
Website: [2]www.sheffield.gov.uk
 
[3]Sign up to our free email alerts
 
 
 
 
 
 
This Email, and any attachments, may contain non-public information and is
intended solely for the individual(s) to whom it is addressed. It may
contain sensitive or protectively marked material and should be handled
accordingly. If this Email has been misdirected, please notify the author
immediately. If you are not the intended recipient you must not disclose,
distribute, copy, print or rely on any of the information contained in it
or attached, and all copies must be deleted immediately. Whilst we take
reasonable steps to try to identify any software viruses, any attachments
to this Email may nevertheless contain viruses which our anti-virus
software has failed to identify. You should therefore carry out your own
anti-virus checks before opening any documents. Sheffield City Council
will not accept any liability for damage caused by computer viruses
emanating from any attachment or other document supplied with this e-mail

References

Visible links
1. https://www.sheffield.gov.uk/foi
2. file:///G:\CEX\Corp%20Res\CS-Gen\First%20Point\email%20toolbar\Copy%20of%20New%20reply\www.sheffield.gov.uk
3. https://public.govdelivery.com/accounts/...

Birkitt Jane, Sheffield City Council

1 Attachment

 
 
SENT ON BEHALF OF DANIEL LADBURY
 
 
Dear Ms Ladding,
 
Further to your Freedom of Information request sent 19th October 2012, we
can respond as follows:
 

Thank you for your previous reply. I am unclear as to what system is being
installed. Is it a Weber accredited system as accredited by Weber?

Weber manufacture and guarantee the render system.

 

If sub contractors are applying it does it still class as INCA certified
and protected?

INCA (the Insulated Render and Cladding Association) is the recognised
trade association for the external wall insulation (EWI) industry,
representing system designers, specialist installers and key component
suppliers. In order to join INCA, companies must satisfy the INCA criteria
for membership including financial stability, health and safety,
insurances, quality management, and training. This gives clients using an
INCA member the confidence that they are working with a reputable
specialist contractor that meets recognised standards of competence. The
company installing the rendered external wall insulation system is a
member of INCA and therefore meets their standards of competence; however
INCA does not certify the work itself.

 

I understood most systems are accredited by the ETA/BBA yet this system is
not. Is that correct?

Any manufacturer can apply for their product or system to be tested to
achieve a BBA certificate, but it would not be possible to say that ‘most’
systems have this accreditation. Weber have it for the external wall
insulation system as explained in our previous response (dated 28.Sept
2012).

 

ref KM 224 P, i seem unable to find this, please provide it.  All
accredited systems are on masonry walls.

This document is a Weber specification sheet and can be found on there
website, however for your convenience it is reproduced below:

 

 

 

OSB/3 is accredited as sheathing. It appears the use as a structural brace
is not within the accreditation. Please provide the building control and
BBA approval for this alternative use.

In this situation the role of the OSB can be described as sheathing – it
covers the existing timber stud framework and has been introduced for its
stiffening properties. Our structural engineer has calculated that its use
in this way in this situation will provide a suitable and sufficient
bracing function to the wall panels and Building Control has approved
these details.

 

What are the projected repair and maintenance costs for this scheme.
Please provide the projected costs.

As stated previously, Sheffield Homes will be responsible for management
of the inspection, maintenance and repair regime, so please contact them
for further details of this.

 

Which department decided the addition of two class 3- high fire risk
products complied with building regulations?

The Architects Practice within Sheffield City Council’s Capital Delivery
Service designed the scheme and proposed a solution meeting the
requirements of the Building Regulations.  The wall panels are already
timber framed and non structural so do not have to achieve a specific fire
rating.

 

Which building regulation does this comply with?

Building Regulations Part B covers fire safety. This is made up of the
following sections:

B1 Means of warning and escape

B2 Internal fire spread (linings)

B3 Internal fire spread (structure)

B4 External fire spread

B5 Access and facilities for the fire service

 

Parts 2, 3 and 4 are applicable:

 

B2 internal fire spread (linings) - the panels have an internal
plasterboard finish and satisfy the building regulations by providing a
class 1 surface.

 

B3 Internal fire spread (structure) - the panels are contained within wall
and floor/roof structures and satisfy this requirement. The use of timber
within the framework is acceptable.

 

B4 External fire spread - the cladding had a B2 rating which is “normal
combustibility”. The rendering has an A1 rating which is
“non-combustible”. There is however no requirement to meet any standard
for the surface due to the walls being well separated from boundaries.

 

Are the fire service aware of this increased fire risk as such schemes are
causing concern in Germany.

There is no increased fire risk.  The Fire Service would have been
consulted by Building Control prior to the approval of plans.

 

I trust that this answers your query.

 

If you are unhappy with the service you have received in relation to your
request and wish to make a complaint, you should write to Mrs Susan
Millington, Head of Strategy, Floor 4 Howden House, Union Street,
Sheffield S1 2SH.

 

If you are not content with the outcome of your complaint, you may apply
directly to the Information Commissioner for a decision. Generally, the
Commissioner cannot make a decision unless you have exhausted our
complaints procedure. The Information Commissioner can be contacted at:
The Information Commissioner's Office, Wycliffe House, Water Lane,
Wilmslow, Cheshire SK9 5AF.

 

Jane Birkitt
Performance Management Team
Capital Delivery Service
Sheffield City Council
Level 4, North Wing
Moorfoot
Sheffield
S1 4PL

Tel: 0114 273 5628  
Fax: 0114 273 5854
Email:  [email address]
Website: www.sheffield.gov.uk

N.B:  My Working week is Tues ,Wed  and Fri

P Please don't print this e-mail unless you really need to

 

 

This Email, and any attachments, may contain non-public information and is
intended solely for the individual(s) to whom it is addressed. It may
contain sensitive or protectively marked material and should be handled
accordingly. If this Email has been misdirected, please notify the author
immediately. If you are not the intended recipient you must not disclose,
distribute, copy, print or rely on any of the information contained in it
or attached, and all copies must be deleted immediately. Whilst we take
reasonable steps to try to identify any software viruses, any attachments
to this Email may nevertheless contain viruses which our anti-virus
software has failed to identify. You should therefore carry out your own
anti-virus checks before opening any documents. Sheffield City Council
will not accept any liability for damage caused by computer viruses
emanating from any attachment or other document supplied with this e-mail

Dear Birkitt Jane,
Thank you for your reply. I understand the council should reply to my questions about maintenance and you have not. Please provide the response. You fully own Sheffield Homes.

I request the proof of dates when the building control passed their approval. Please provide the evidence of this decision all dated.

Could you explain how the wall panels do not count as structural,if they were not in situ, the properties would have no external wall.

I note that the document supplied carries none of the accreditation logos that other Weber products carry. Does this scheme carry exactly the same guarantee as other Weber products?
Please provide an electronic document to support the guarantee claim.

Werzalit is a class 3 high fire risk product, so how can there possibly be no increased fire risk?

You have not fully answered my request so please do so.In addition please undertake an internal review as to why you have not fully answered.

Yours sincerely,

Cheryl Ladding

Birkitt Jane, Sheffield City Council

I am currently out of the office until Tuesday 20 November. Please contact Kate Wragg or Tanya Sutton on 273 5628 in my absence.

Birkitt Jane, Sheffield City Council

3 Attachments

Dear Ms Ladding,

Further to your additional request dated 17th November 2012, please find
below our further response to the queries raised: 
 

1.  Thank you for your reply. I understand the council should reply to my
questions about maintenance and you have not. Please provide the response.
You fully own Sheffield Homes. 

The original question was "What are the projected repair and maintenance
costs for this scheme.  Please provide the projected costs."  We have
liaised with Sheffield Homes and can provide some additional information
to that which was provided previously in our response to you dated 28th
September 2012 (please see copy of response attached) as follows:   The
cladding (and associated works) will reduce the maintenance liability for
the building compared to the previous installation.    The materials used
were selected for being low maintenance and therefore we only expect
cleaning and minor repairs following impact damage.  It is difficult to
predict with any great certainty the maintenance costs over future years
given we cannot specifically anticipate the damage caused by vandalism,
the weather etc.

 

We do not hold any information relating to projected repair and
maintenance costs and Sheffield Homes have also advised us that they do
not have such information relating to the proposed installation.

   
2.  I request the proof of dates when the building control passed
their approval. Please provide the evidence of this decision all dated.
Please see a copy of the approval notice below.
 

3.  Could you explain how the wall panels do not count as
structural,if they were not in situ, the properties would have no external
wall.
The building structure is made up of brick cross walls between the
properties which support concrete floor and roof slabs.    The wall
cladding panels that are being installed are supported by that structure
and provide insulation and protection from the weather, but they are not
required to make the building stand up.  As such, whilst they are required
for weather protection and insulation, they are not required to make the
building stand up.

4.  I note that the document supplied carries none of the
accreditation logos that other Weber products carry. Does this scheme
carry exactly the same guarantee as other Weber products?
    
Yes, the Weber guarantee covers this specification.   We have liaised
with Weber and obtained the attached letter confirming this. 

5.  Please provide an electronic document to support the guarantee claim.
    
Please see attached letter.     

6.  Werzalit is a class 3 high fire risk product, so how can
there possibly be no increased fire risk?
 
The wall panels are constructed on a timber supporting
framework.  Originally this was clad with hanging tiles and, although the
tiles themselves were not combustible, fire could have reached the slender
timber tiling battens holding the tiles to the frame and could therefore
have caused them all to fall off.

The use of a combustible cladding (such as timber or Werzalit) fixed onto
the plywood clad timber frame, again using slender battens, is no worse
than the original construction (indeed, even though werzalit can burn, the
new build-up could be considered an improvement as, if the support battens
were to burn, there is still a plywood layer reinforcing the timber frame
meaning there is more timber to burn through in the current installation
before the wall panel is lost compared to the previous
installation).  Notwithstanding any of this, the design of these wall
panels meets all the requirements of the Building Regulations in relation
to fire (please refer to our previous response dated 14th November 2012
which is included below this email).    

7.  You have not fully answered my request so please do so. In addition
please undertake an internal review as to why you have not fully answered.
The original question was "What are the projected repair and maintenance
costs for this scheme. Please provide the projected costs."  

The response was "As stated previously, Sheffield Homes will be
responsible for management of the inspection, maintenance and repair
regime, so please contact them for further details of this."
Our Head of Service has undertaken an internal review into this as
requested:

The above response was provided in addition to information provided under
a previous response dated 28th September 2012, a copy of which is
attached. Furthermore, some additional information is now provided in the
response to Query 1 above which clarifies the information previously
submitted. 

The initial response provided on 28th September 2012 provided all of the
information held by the service/ council and within this response, further
direction was also made to our ALMO, Sheffield Homes where it was possible
that additional information might be available.  It is considered that
this was technically an appropriate response, however we acknowledge
that from a customer service perspective we could have contacted Sheffield
Homes ourselves to verify whether any additional information was available
in order to provide a more comprehensive response.  Henceforth, we will
seek to address this within our internal processes in future. 

In light of this, we have now contacted Sheffield Homes to see if
they have any further information available and provide additional
information in the response to item 1 above.

Notwithstanding this, all of the relevant information held by us was
issued under the first response on 28th September.  We do not hold the
information specifically requested regarding projected repair and
maintenance costs.  Furthermore, we have done our best to obtain any
additional information from our ALMO, Sheffield Homes, and to the best of
our knowledge, have now provided all of the information that they have
available which has now been forwarded to you in this email. 

As such, we consider that the questions submitted to us have now been
answered to the very best of our ability.

 

I trust that this answers your query. 

 
    
     If you are unhappy with the service you have received in relation
     to your
     request and wish to make a complaint, you should write to Mrs
     Susan
     Millington, Head of Strategy, Floor 4 Howden House, Union Street,
     Sheffield S1 2SH.
    
      
    
     If you are not content with the outcome of your complaint, you may
     apply
     directly to the Information Commissioner for a decision.
     Generally, the
     Commissioner cannot make a decision unless you have exhausted our
     complaints procedure. The Information Commissioner can be
     contacted at:
     The Information Commissioner's Office, Wycliffe House, Water Lane,
     Wilmslow, Cheshire SK9 5AF.

show quoted sections