Cladding scheme accreditation

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,

Is the Lansdowne/Hanover insulated cladding and render scheme BBA(British Board of agrement) accredited?

Is this scheme ETA(European technical Approval) accredited?

Are Apollo registered with INCA( Insulated render and cladding association)?

Is this scheme accredited or approved by any authoritative national body?

Are any of the products being used in this scheme BBA/ETA accredited?

Please provide all accreditation certificates, and the specifications for what has been certified.

How much maintenance needs to be done, how often does it need to be done, and what is the predicted cost for this?

Does the maintenance have any effect upon the guarantee of this system?

Has a fire risk assessment been undertaken as several products are class 3- high fire risk. Please provide the assessments and the date they were done.

What is the guarantee warranty for this scheme?

Who is the underwriter of this scheme?

What percentage of this scheme has been grant funded?

Yours faithfully,

Cheryl Ladding

Firstpoint@sheffield.gov.uk, Sheffield City Council

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Ladbury Daniel, Sheffield City Council

Dear Ms Ladding,

 

Further to your request (below) dated 6th September 2012, please see our
response as follows:

 

 

Is the Lansdowne/Hanover insulated cladding and render scheme BBA (British
Board of Agrement) accredited?

 

BBA does not give accreditation to ‘schemes’, only to products/systems.
The external wall insulation system (Weber-therm XM) has BBA approval,
certificate number 91/2691 (previously 91/2600 ) which tested the system
on a solid masonry substrate. The manufacturer (Weber) has a supplementary
specification sheet (ref KM 224 P) for use of the system on a panel
background and fully endorses the detailed design employed at Lansdowne
and Hanover.

 

 

Is this scheme ETA (European Technical Approval) accredited?

 

ETA’s are a European alternative to national agrément certificates and
are a technical assessment of the suitability of a product for an intended
use. They are designed to reduce technical barriers in the construction
products sector throughout Europe, but like BBA certificates, are applied
to products not to schemes.

 

 

Are Apollo registered with INCA (Insulated render and cladding
association)?

 

No; however, both Weber and Slimline (the sub-contractor doing the
rendering) are INCA registered.

 

 

Is this scheme accredited or approved by any authoritative national body?

 

The scheme will be approved by Building Control for compliance with the
Building Regulations.

 

 

Are any of the products being used in this scheme BBA/ETA accredited?

 

Yes (see below).

 

 

Please provide all accreditation certificates, and the specifications for
what has been certified.

 

Within the non-structural wall panels the following is an outline of the
specified works:

o Existing cladding is stripped off;
o Existing timber studs are exposed and repaired or replaced as
required;
o Strengthening steelwork is fitted;
o Plywood bracing layer is screwed to studs (smartply OSB3 - BBA cert
no. 98/3488);
o Insulation board is applied (Celotex FR5000 polyisocyanurate - BBA
cert no.s 09/4667 for timber frame dwellings and BBA cert. no. 95/3197
for other uses);
o Weber-therm XM render system is applied (BBA cert. no. 91/2691);
o At upper levels vertical werzalit cladding is used instead of render
but the underlying materials are the same. (The cladding is BBA
certified. no. 08/4610);

 

 

How much maintenance needs to be done, how often does it need to be done,
and what is the predicted cost for this?

 

The Werzalit cladding requires minimal maintenance. An annual inspection
is recommended, followed by replacement or repair of any damaged boards or
accessories that are found. If cleaning is required this is done using hot
water and a mild detergent.

 

The Weber insulated render system also requires minimal maintenance.
Inspection is recommended annually followed by repair of any localised
damage that is identified. Cleaning is not normally required but can be
carried out using a soft brush with hot water and a mild detergent.

 

The annual cost of maintenance is difficult to predict. In normal
circumstances, if no damage is found there would be no need for any repair
work. However if damage is discovered the cost of repair will depend on
the nature, extent and location of the damage.

 

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

 

 

Does the maintenance have any effect upon the guarantee of this system?

 

It is normal that products have to be installed and maintained in
accordance with the requirements of the manufacturer in order to maintain
the guarantee. On completion of the works the Contractor (Apollo) will
supply the Client (Sheffield Homes) with an Operating and Maintenance
Manual containing details of these requirements.

 

 

Has a fire risk assessment been undertaken as several products are class
3- high fire risk. Please provide the assessments and the date they were
done.

 

A fire risk assessment did not form part of the process for design of
improvements to the existing cladding. However the proposals were
submitted to Building Control who checked that the requirements of the
Building Regulations were met and these include fire safety.

 

All materials are carefully considered at specification stage for their
suitability, including their performance in fire. These non-structural
wall panels are already timber framed and the addition of plywood as a
structural brace, whilst a combustible product, never the less improves
the overall performance of the wall, including in the case of fire. The
Werzalit cladding, which is also timber based, is used as an external
cladding and does not impact on the structural integrity of the wall. It
is used in separate panels to the elevations of upper floors only and
meets the requirements of Building Regulations.

 

 

What is the guarantee warranty for this scheme?

Who is the underwriter of this scheme?

 

We enter into an agreement with the Contractor in the form of a bond to
guarantee the performance of the Contract by the Contractor as previously
confirmed at tender invitation stage.

 

The Contractors insurers are ultimately the underwriters of this scheme.

 

The Contract further stipulates the Contractors liabilities for
maintaining standards and making good defects and states that if any
defects appear within 12 months due to materials or workmanship not in
accordance with the contract such defects shall be made good. Final
payment is only made when such making good is satisfactorily completed.

 

Beyond the duration of the 12 months rectification period the Employers
common law rights with respect to latent defects continue to apply. Latent
defects are defined as those defects which are not readily apparent or
discoverable upon a standard inspection of the completed works. In other
words, latent defects are concealed flaws; defects that exist, but are
hidden at the time of completion.

 

 

What percentage of this scheme has been grant funded?

 

None

 

 

 

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.

 
 
Kind Regards
Daniel Ladbury
Head of Service | Capital Delivery Service | Sheffield City Council
Level 4, North Wing, Moorfoot, Sheffield, S1 4PL

show quoted sections

Howarth Serica, Sheffield City Council

3 Attachments

Dear Ms Ladding,
 
Please find attached letter.
 
As the letter has been scanned in as a PDF document the links are not
live, therefore I have attached the two documents that are in the links.
 
Kind regards
 
Serica Howarth
 
 
This Email, and any attachments, may contain non-public information and is
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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