certificate no: ewws182d - labc · full project specific design package for the specifications of...
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Photo/isometric drawing
provided by manufacturer
Porotherm 300mm, 425mm and 490mm Solid Wall Construction
Description of Product
This is an assessment of Wienerberger
Porotherm 300, 425 and 490mm an engineered
clay block with tongue and groove interlock for
use as load bearing and non-loadbearing walls. It is suitable for use on single and multi-
storeys.
Key Factors Assessed
Safety in case of Fire
Health, Hygiene and Environmental
Safety in Use
Protection against noise
Energy Economy and heat retention
Durability serviceability and identification
Validity
This certificate was first issued on 8th December 2017 and is valid until 8th December 2021
Issue Dated 8th October 2019
Certificate No: EWWS182D
Porotherm blocks are highly perforated clay blocks intended for use in masonry which is above dpc and protected against
water penetration. Protection may be provided to external masonry by suitable render or cladding or by its location as an
inner leaf in cavity walling or as an internal partition.
The blocks are supplied in thickness of 300, 400 and 490mm and are placed on a bed of Porotherm thin joint mortar. The
bed surfaces of the blocks are ground flat and parallel such that the target thickness of the bed joint is 1mm. The cross-
joints are formed by interlocking features in the header ends of the unit and contain no mortar.
Porotherm blocks all carry the CE mark.
The dimensions of each block are:
300: 248x300x249mm
400: 248x400x249mm
490: 248x490x249mm
The Porotherm solid wall blocks are suitable for external wall construction providing it is protected from external weather
and moisture by appropriate DPC’s and an approved cladding or render system.
Appropriate thermal analysis will be provided in each instance to demonstrate continued compliance with Approved
Document L.
For LABC Warranty purposes:
All blocks are suitable for use in solid wall construction subject to the provision of an independent cladding system with a
drained cavity in accordance with table 1 Chapter 7.3 of the LABC Warranty Technical Manual.
The exception being, blocks of 365mm thickness or greater where the use of a Parex render system that is provided with a
full project specific design package for the specifications of the render and installed by Parex only.
For Scotland purposes:
The specifications and materials referred to have been assessed and approved in accordance with the Building (Scotland)
Regulations 2004 and in accordance with the supporting guidance in the Domestic Technical Handbooks which came into
force with effect from 1 October 2019.
Where reference is made on a plan or specification document to any Code of Practice, British or European Standard or
manufacturer’s instruction it shall be construed as a reference to such publication in the form in which it is in force at the
date of this Registered Detail.
The materials specified shall not be changed without first gaining approval so to do. Failure to do so will invalidate the
Registered Detail.
This Registered Detail should not be regarded as a formal approval under the building warrant process prescribed by the
Building (Scotland) Act 2003 enacted from 1 May 2005. It supports the site-specific building warrant submission required in
every case.
This Registered Detail shall contribute to compliance with relevant Mandatory Standards specified under the Building
(Scotland) Regulations 2004 as amended when read with the Scope of Registration and the Conditions of Certificate
Sections to this Registered Detail.
LABC and LABSS consider that, Porotherm 300mm, 425mm and 490mm Solid Wall Construction, will
meet the functional requirements of the Building Regulations (listed below) if the criteria detailed in this
certificate are met;
The Building Regulations 2010 (as amended) England & Wales
Regulation 7 Materials and workmanship
Note: The product is acceptable.
AD A Structure
Note: Relates to A1 only.
AD B Fire Safety
Note: Relates to B4.
AD C Site Preparation and Resistance to Ground Moisture
Note: The product can contribute to satisfying this requirement.
AD E Resistance to the Passage of Sound
Note: The product can contribute to satisfying this requirement.
AD L1A & L2A Conservation of fuel and power
Note: The thermal insulation performance of this system should be considered in the
context of the contribution made to the overall performance of the wall.
ADL1B & L2B Conservation of fuel and power
Note: The thermal insulation performance of this system should be considered in the
context of the contribution made to the overall performance of the wall.
The Building Regulations 2010 (as amended) England
AD L1A & L2A Conservation of fuel and power
Note: The thermal insulation performance of this system should be considered in the
context of the contribution made to the overall performance of the wall.
The Building Regulations 2010 (as amended) Wales
AD L1A & L2A Conservation of fuel and power
Note: The thermal insulation performance of this system should be considered in the
context of the contribution made to the overall performance of the wall.
The Building (Scotland) Regulations 2004 (as amended)
The Building (Scotland) Regulations 2004 (as amended)
Technical Handbooks - Domestic
Regulation 8 Durability, workmanship and fitness of materials
0.8.5: Ways of establishing the fitness of materials
Note: The system is acceptable provided it is constructed in accordance with the
manufacturer’s details.
Regulation 9 Building Standards applicable to construction
Note: Construction shall be carried out so that the work complies with the applicable
requirements of schedule 5.
Mandatory
Standard 1.1 Structure
Note: The system is acceptable, provided it is constructed in accordance with the
manufacturer’s details including that the mortar joints to the blocks shall only be
Porotherm bed joint mortar supplied by the manufacturer.
Mandatory
Standard 2.3 Structural protection
Note: The system is acceptable provided it is constructed in accordance with the
manufacturer’s details.
Mandatory
Standard 2.5 Internal linings
Note: The system is acceptable provided it is constructed in accordance with the
manufacturer’s details and specified to suit the location and use of the block as
prescribed by the manufacturer.
Mandatory
Standard 2.6 Unprotected areas
Note: To be accessed at each application given that the construction using the blocks
will be subjected to site-specific constraints.
Mandatory
Standard 3.10 Precipitation
Note: Porotherm blocks should be fully protected at all times from the elements. The
system is acceptable provided it is constructed in accordance with the
manufacturer’s details and by an accredited contractor. Any external wall cladding
used in association with the product is not part of this certificate and should be
separately assessed for suitability when used with this product and to satisfy the
cladding manufacturer’s conditions and specifications.
Mandatory
Standard 3.15 Condensation
Note: The system is acceptable provided it is constructed in accordance with the
manufacturer’s details and by an accredited contractor.
Mandatory
Standard 5.1 Noise separation
Note: The system can contribute to compliance with this standard provided it is
constructed in accordance with the manufacturer’s details and by an accredited
contractor.
Mandatory
Standard 6.2 Building insulation envelope
Note: The system will contribute to the required U-value in any site-specific case, provided it is constructed in accordance with the manufacturer’s details and by an
accredited contractor.
LABC Warranty
LABC Warranty conditionally accepts the use of Porotherm 300mm, 425mm and 490mm, when installed
and used in accordance with the Scope and Conditions of this Certificate. Visit www.labcwarranty.co.uk
for our LABC Warranty Technical Manual requirements and Warranty conditions of acceptance.
Technical data for Baumit renders
Technical data for Ecorend renders
Porotherm brochure and installation guides
Porotherm best practice guide
Lucideon technical report, special publication 148 June 2015
For Scotland purposes:
Ceram Brochure – Technical report and design guidance for the use of Porotherm Blocks in the UK – Special publication 148
Ancon – Wall ties for use with Cellular clay blocks
Fischer test report – fixing tests for Wienerberger ‘Porotherm’ blocks
Wienerberger Building Value – Installation brochure
Wienerberger Building Value – Porotherm Bed joint mortar, for masonry work using Porotherm hollow clay precision blocks.
Wienerberger Building Value – Typical details
Fire testing 190.pdf - the fire resistance performance of a loadbearing wall assembly, tested in accordance with SB EN 1365-1:
1999, report number 331583.
Pdf 186546 fr.pdf – the fire resistance performance of a loadbearing wall assembly, tested in accordance with SB EN 1365-1:
1999, report number 186546.
Sound review of separating wall Muiryhall Street, Coatbridge.pdf (Dated 5th September 2017)
Wienerberger Ltd
Wienerberger House
Brooks Drive
Cheadle Royal Business Park
SK8 3SA
Tel: 0161 491 8200
Email: [email protected]
Website: www.brick.co.uk