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TECHNICAL APPROVALS FOR CONSTRUCTION

APPROVAL

INSPECTION

TESTING

CERTIFICATION

BASF plc, Construction Chemicals19 Broad Ground Road Lakeside Redditch Worcestershire B98 8YP Tel: 01527 512255 Fax: 01527 503576e-mail: chris.gallivan@basf.comwebsite: www.master-builders-solutions.basf.co.uk

British Board of Agrément tel: 01923 665300Bucknalls Lane fax: 01923 665301Watford clientservices@bba.star.co.ukHerts WD25 9BA www.bbacerts.co.uk©2015

The BBA is a UKAS accredited certification body — Number 113. The schedule of the current scope of accreditation for product certification is available in pdf format via the UKAS link on the BBA website at www.bbacerts.co.uk

Readers are advised to check the validity and latest issue number of this Agrément Certificate by either referring to the BBA website or contacting the BBA direct.

BASF plc WATERPROOFING PRODUCTS

MASTERSEAL 581 AND MASTERSEAL 583

This Certificate relates to MasterSeal 581 and MasterSeal 583, cementitious waterproofing components for use in waterproofing new or existing structures.

CERTIFICATION INCLUDES:• factors relating to compliance with Building

Regulations where applicable• factors relating to additional non-regulatory

information where applicable• independently verified technical specification• assessment criteria and technical investigations• design considerations• installation guidance• regular surveillance of production• formal three-yearly review.

KEY FACTORS ASSESSEDResistance to water penetration — when applied to a suitable substrate in two coats the products adequately resist the penetration of water (see section 6).

Sulfate resistance — the products may be used in class DS1 soils or groundwater as defined in BRE Digest 1 : 2005 (see section 8).

Durability — under normal service conditions the products will provide an effective barrier to the transmission of groundwater for the life of the building to which they are applied (see section 14).

Agrément Certificate89/2138

Product Sheet 1

The BBA has awarded this Certificate to the company named above for the products described herein. These products have been assessed by the BBA as being fit for their intended use provided they are installed, used and maintained as set out in this Certificate.

On behalf of the British Board of Agrément

Date of Sixth issue: 12 May 2015 John Albon — Head of Approvals Claire Curtis-Thomas

Originally certificated on 11 January 1989 Construction Products Chief Executive

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In the opinion of the BBA, MasterSeal 581 and MasterSeal 583, if installed, used and maintained in accordance with this Certificate, can satisfy or contribute to satisfying the relevant requirements of the following Building Regulations (the presence of a UK map indicates that the subject is related to the Building Regulations in the region or regions of the UK depicted):

The Building Regulations 2010 (England and Wales) (as amended)

Requirement: C2(a)(b) Resistance to moisture

Comment: The products adequately resist the passage of moisture. See section 6 of this Certificate. Regulation: 7 Materials and workmanship

Comment: The products are acceptable. See section 14 and the Installation part of this Certificate.

The Building (Scotland) Regulations 2004 (as amended)

Regulation: 8(1)(2) Durability, workmanship and fitness of materials

Comment: The products can contribute to a construction satisfying this Regulation. See section 14 and the Installation part of this Certificate.

Regulation: 9 Building standards applicable to constructionStandard: 3.3 Flooding and ground waterStandard: 3.4 Moisture from the groundStandard: 3.10 Precipitation

Comment: The products adequately resist the passage of moisture and can contribute to satisfying these Standards, with reference to clauses 3.3.2(1)(2), 3.4.1(1)(2), 3.4.5(1)(2), 3.4.6(1)(2), 3.4.7(1)(2) and 3.10.1(1)(2). See section 6 of this Certificate.

Standard: 7.1(a) Statement of sustainability

Comment: The products can contribute to meeting the relevant requirements of Regulation 9, Standards 1 to 6 and therefore will contribute to a construction meeting a bronze level of sustainability as defined in this Standard.

Regulation: 12 Building standards applicable to conversions

Comment: All comments given for these products under Regulation 9, Standards 1 to 6 also apply to this Regulation, with reference to clause 0.12.1(1)(2) and Schedule 6(1)(2).

(1) Technical Handbook (Domestic). (2) Technical Handbook (Non-Domestic).

The Building Regulations (Northern Ireland) 2012 (as amended)

Regulation: 23(a)(i)(ii)(iii)(v)(b)(i) Fitness of materials and workmanship

Comment: The products are acceptable. See section 14 and the Installation part of this Certificate.Regulation: 28(a)(b) Resistance to moisture and weather

Comment: The products adequately resist the passage of moisture. See section 6 of this Certificate.

Construction (Design and Management) Regulations 2015Construction (Design and Management) Regulations (Northern Ireland) 2007

Information in this Certificate may assist the client, Principal Designer/CDM co-ordinator, designer and contractors to address their obligations under these Regulations.See section: 3 Delivery and site handling (3.1 and 3.4) of this Certificate.

Additional Information

NHBC Standards 2014NHBC accepts the use of MasterSeal 581 and MasterSeal 583 on new-build projects, when installed on the internal side of a basement construction in combination with an additional system specified under BS 8102, in relation to NHBC Standards, Chapter 5.4 Waterproofing of basements and other below ground structures.

NHBC accepts the use of MasterSeal 581 and MasterSeal 583 on existing structures when installed and used in accordance with this Certificate and NHBC Standards for Conversions and Renovations, taking account of other relevant guidance within the chapter and the suitability of the substrate to receive the system.

Regulations

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Technical Specification

1 Description1.1 MasterSeal 581 and MasterSeal 583 are cementitious compounds containing cement, graded sands, aggregates and chemical additives. They are supplied in grey or white powder form to be mixed with water on site and applied as a slurry.

1.2 MasterSeal 581 contains no polymer additive but may be mixed with MasterSeal 600 (acrylic bonding agent admixture) when application is to be made over smooth and non-absorbent substrates.

1.3 MasterSeal 583 is a one-part product, whose formulation includes a spray-dried acrylic polymer.

1.4 MasterSeal 600 is a liquid acrylic polymer additive for cementitious mixes.

1.5 MasterSeal 590 is a cement-based, quick-setting hydraulic compound, used to control seepage through concrete or masonry.

2 Manufacture2.1 The products are produced by a continuous batch blending process.

2.2 As part of the assessment and ongoing surveillance of product quality, the BBA has:• agreed with the manufacturer the quality control procedures and product testing to be undertaken• assessed and agreed the quality control operated over batches of incoming materials• monitored the production process and verified that it is in accordance with the documented process• evaluated the process for management of nonconformities• checked that equipment has been properly tested and calibrated• undertaken to carry out the above measures on a regular basis through a surveillance process, to verify that the

specifications and quality control operated by the manufacturer are being maintained.

2.3 The management system of BASF plc, Construction Chemicals has been assessed and registered as meeting the requirements of BS EN ISO 9001 : 2008 by BSI (Certificate FM 1779).

3 Delivery and site handling3.1 MasterSeal 581 and MasterSeal 583 are packed in 25 kg moisture-proof paper sacks or metal containers. Each container carries a label bearing the BBA logo incorporating the number of this Certificate.

3.2 MasterSeal 581 and MasterSeal 583 are cement-based and must be handled using routine precautions for cement-based materials, stored in dry conditions and stacked no more than 6 bags high. They have a shelf life of 12 months.

3.3 MasterSeal 600 is supplied in 20 litre plastic containers. It has a 12-month shelf life and must be protected from frost.

3.4 MasterSeal 581, 583, 590 and 600 are classified, labelled and packaged according to The Chemicals (Hazard Information and Packaging for Supply) Regulations 2009 (CHIP4)/Classification, Labelling and Packaging of Substances and Mixtures (CLP Regulation) 2009. MasterSeal 581, 583 and 590 carry the hazard symbol ‘irritant’. Full risk and safety information is contained in the relevant Material Safety Data Sheets.

Assessment and Technical Investigations

The following is a summary of the assessment and technical investigations carried out on MasterSeal 581 and MasterSeal 583.

Design Considerations

4 General4.1 MasterSeal 581 and MasterSeal 583, when used in two coats in the proportions defined in section 17 of this Certificate, provide an effective barrier against the transmission of liquid water and can be applied to brickwork, stonework, blockwork or concrete substrates. The product is not suitable for use on aerated or lightweight concrete blocks.

4.2 The products are Type A tanking membranes as defined in BS 8102 : 2009 section 8.2.7, and are used in accordance with that Standard. They are used in combination with other systems defined in BS 8102 : 2009 to achieve Grade 2 or 3, as defined in Table 2 of BS 8102 : 2009.

Guidance on the waterproofing of basements can be found in BS 8102 : 2009 and Basements: Waterproofing – General guidance to BS 8102 : 2009, issued by The Basement Information Centre.

4.3 The products are satisfactory for use in the following situations:

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• for interior and exterior waterproofing of concrete, brickwork, stone and blockwork structures• for waterproofing concrete floors• as a waterproofing system for water-retaining structures, eg reservoirs and pools• in new-build tanking applications applied to the internal surface of basements in combination with another system

specified under BS 8102 : 2009• for remedial tanking applied to the internal surface of existing basements.

4.4 New buildings must be designed to withstand the hydrostatic pressure expected in service and the products should not be applied if subsequent movement of the substrate is anticipated.

4.5 MasterSeal 581 and MasterSeal 583 are not suitable for retaining water with a low calcium hardness or pH less than 7.2. Advice should be sought from the Certificate holder for particular applications.

5 Practicability of installationThe products must be applied by suitably competent and experienced contractors using conventional techniques. Workmanship should comply with BS 8000-4 : 1989.

6 Resistance to water penetrationThe products adequately resist the penetration of water.

7 Resistance to water vapourTwo-coat applications of MasterSeal 581 and MasterSeal 583, when applied to a typical test substrate, have water vapour resistances of 1.45 MN·s·g–1 and 2.68 MN·s·g–1, respectively.

8 Sulfate resistance8.1 The products are based on Portland cement and may be used in class DS1 soils or groundwater as defined in BRE Special Digest 1 : 2005 Concrete in aggressive ground, Part C Assessing the aggressive chemical environment (see Table 1).

Table 1 Concentration of sulfates

Design sulfate class for site 2:1 water/soil extract (SO4 g per litre)

Groundwater (SO4 g per litre)

Total potential (SO4 %)

DS1 < 1.2 < 0.4 < 0.24

8.2 Where the substrate has a high sulfate content, or is efflorescing, the advice of the Certificate holder should be sought.

9 Condensation risk9.1 If the products are applied to the inside of a basement wall, the wall structure will remain cold and damp, with subsequent risks of condensation and frost damage.

9.2 The condensation risk can be minimised by the application of a coat of proprietary lightweight cement-based plaster, and the provision of adequate heating and ventilation and/or the use of a dehumidifier.

9.3 The low water vapour resistance will allow excess humidity inside a basement to migrate through the wall into the surrounding ground. However, if the external water vapour pressure is high the reverse may occur. The presence of any additional external tanking membrane will also need to be considered in any condensation risk analysis carried out in accordance with BS 5250 : 2011.

10 Resistance to movementThe products are unable to accommodate substrate movement and can only be used where such movement is not anticipated, or in conjunction with waterproof movement joints. The Certificate holder’s advice on suitable materials should be sought.

11 Fixings11.1 Special measures are necessary to avoid breaching the waterproof rendering when attaching fixings. The measures include:• the use of epoxy resin or polyurethane adhesives to bond lightweight fixings to the coated surface• recesses made in the substrate to accept heavy duty fittings being filled with MasterSeal 590 to form waterproof

pockets• the use of floor standing supports.

11.2 If these techniques cannot be applied and it is necessary to breach the coating, recesses in the substrate must be filled with MasterSeal 590.

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12 Resistance to damage12.1 The coating is vulnerable to damage during installation and in service, particularly in heavily-trafficked areas where this is a risk of impact or abrasion.

12.2 Coatings of MasterSeal 581 and MasterSeal 583 on walls should be protected, for example by a sand/cement render or a proprietary cement-based plaster.

13 MaintenanceAs the products are protected by an overcoating layer or screed and have suitable durability (see section 14), maintenance is not required.

14 DurabilityUnder normal condition of use, the products will provide an effective barrier to the transmission of water for the life of the building to which they are applied.

Installation

15 General15.1 Application of MasterSeal 581 and MasterSeal 583 should not be attempted during heavy rain, to a frozen surface or at temperatures of 5°C or below (or where the temperature is expected to drop to below 5°C within 24 hours).

15.2 Existing water infiltration should be investigated and rectified prior to installation of the product. Advice should be sought from the Certificate holder.

16 Surface preparation16.1 Prior to application, all mortar joints must be flush pointed, defects made good and irregular surfaces given a trowelled or floated finish with a sand/(lime)/cement mix.

16.2 All surfaces must be sound and free from existing coatings or contamination. Abrasive blasting or high-pressure water jetting may be used to remove previous coatings, loose particles and surface laitance, to expose a clean, open-textured concrete surface. Scabbling or similar aggressive methods should not be used.

16.3 A new concrete surface should be prepared by sand blasting or high-pressure water jetting (minimum pressure of 5000 psi) to achieve the required surface finish.

16.4 If the surface shows frost damage, the affected area is removed and repaired using a suitable cementitious concrete repair material before the product is applied. The Certificate holder can advise on suitable material for a particular application.

17 Application17.1 A slurry is prepared by mixing (preferably by machine) 25 kg of the product with potable water, in clean containers, in the following ratios (if MasterSeal 600 is used with MasterSeal 581, it is added to the mixing water in the ratio one part MasterSeal 600 to three parts water):• MasterSeal 581 — 4.8 to 6.1 litres of water• MasterSeal 581 with MasterSeal 600/water blend — 4.8 to 5.6 litres• MasterSeal 583 — 5 to 5.8 litres of water.

17.2. The powder is blended into the liquid using a suitable mixing paddle at a speed of 400–600 rpm and mixed until a thick, lump-free consistency is reached. The mix is allowed to stand for 5–10 minutes to allow full saturation to take place, then re-mixed, adding a small amount of liquid, if required, to restore the consistency (but care must be taken to not exceed the maximum liquid requirement).

17.3 If it is not already wet, the substrate must be saturated before MasterSeal 581 or MasterSeal 583 is applied, but it must be free from surface water.

17.4 The products are applied to the substrate in two coats. The basecoat is applied using a brush with stiff nylon bristles (typically 150 mm in width with 80 mm long bristles), at an average coverage rate of 1.5 kg·m–2 on concrete or up to 2.5 kg·m–2 on other substrates for both products (typically 1 mm per coat). The product may also be spray-applied using a 3–4 mm nozzle at a pressure of 3.6–5.0 bar (50–70 lb·in–2).

17.5 The first coat of MasterSeal 581 or MasterSeal 583 is vigorously brushed into the surface. Application should be carried out so that a flowing edge is maintained. If this is not possible, when application is continued the previously-applied coat should be overlapped by at least 200 mm.

17.6 After the first coat has hardened (after a minimum of 24 hours), the second coat may then be applied by brush or spray at an average rate of 1.5 kg·m–2 for both products (typically 1 mm per coat). To aid proper coverage, the second coat should be a different colour,

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17.7 Each coat is examined for damage, pinholes and areas of incomplete coverage before the next coat is applied, and remedial action taken as required.

17.8 MasterSeal 581 or MasterSeal 583 should be used within 60 minutes of completion of mixing.

17.9 Once the final coating has fully hardened and cured, a coat of proprietary cement-based plaster or sand/cement mix may be applied to protect it from damage during service.

17.10 Floors waterproofed with the products must be protected by a screed.

Technical Investigations

18 Tests18.1 Tests were carried out on MasterSeal 581 and MasterSeal 600 and the results assessed to determine:• resistance to water pressure• shrinkage and swelling• curing characteristics• compressive strength• water vapour permeability• coefficient of thermal expansion• flexural strength• resistance to frost• adhesion to substrates• modulus of elasticity.

18.2 Test were carried out on MasterSeal 583 and the results assessed to determine:• water vapour resistance• product characteristics.

18.3 An examination was made of existing data for MasterSeal 581 relating to:• resistance to wind-driven rain• water absorption• impact resistance• resistance to weathering• resistance to fungal growth• toxicity• resistance to salt spray• effective life• effect of MasterSeal 600 additive• resistance to freeze/thaw• abrasion resistance.

18.4 An examination was made of existing data for MasterSeal 583 relating to:• resistance to water pressure• compressive strength (comparative)• shrinkage and swelling (comparative)• flexural strength (comparative)• density (comparative).

18.5 A report by the Amtliche Materialprüfanstalt für Steine und Erden on the performance of Masterseal (formerly Thoro) installations in Germany, dating from 1982, was examined.

19 Investigations19.1 An assessment was made of the suitability of use in soils and groundwater.

19.2 A survey of users was conducted to assess the performance of the products in use.

19.3 A visit was made to a site in progress to assess the practicability of installation.

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19.4 The manufacturing process was evaluated, including the methods adopted for quality control, and details were obtained of the quality and composition of the materials used.

BibliographyBS 8000-4 : 1989 Workmanship on building sites — Code of practice for waterproofingBS 8102 : 2009 Code of practice for protection of below ground structures against water from the ground

BS 5250 : 2011 Code of practice for control of condensation in buildings

BS EN ISO 9001 : 2008 Quality management systems — Requirements

Conditions of Certification

20 Conditions20.1 This Certificate:• relates only to the product/system that is named and described on the front page• is issued only to the company, firm, organisation or person named on the front page — no other company, firm,

organisation or person may hold or claim that this Certificate has been issued to them• is valid only within the UK• has to be read, considered and used as a whole document — it may be misleading and will be incomplete to be

selective• is copyright of the BBA• is subject to English Law.

20.2 Publications, documents, specifications, legislation, regulations, standards and the like referenced in this Certificate are those that were current and/or deemed relevant by the BBA at the date of issue or reissue of this Certificate.

20.3 This Certificate will remain valid for an unlimited period provided that the product/system and its manufacture and/or fabrication, including all related and relevant parts and processes thereof:• are maintained at or above the levels which have been assessed and found to be satisfactory by the BBA• continue to be checked as and when deemed appropriate by the BBA under arrangements that it will determine• are reviewed by the BBA as and when it considers appropriate.

20.4 The BBA has used due skill, care and diligence in preparing this Certificate, but no warranty is provided.

20.5 In issuing this Certificate, the BBA is not responsible and is excluded from any liability to any company, firm, organisation or person, for any matters arising directly or indirectly from:• the presence or absence of any patent, intellectual property or similar rights subsisting in the product/system or any

other product/system• the right of the Certificate holder to manufacture, supply, install, maintain or market the product/system• actual installations of the product/system, including their nature, design, methods, performance, workmanship and

maintenance• any works and constructions in which the product/system is installed, including their nature, design, methods,

performance, workmanship and maintenance• any loss or damage, including personal injury, howsoever caused by the product/system, including its manufacture,

supply, installation, use, maintenance and removal• any claims by the manufacturer relating to CE marking.

20.6 Any information relating to the manufacture, supply, installation, use, maintenance and removal of this product/system which is contained or referred to in this Certificate is the minimum required to be met when the product/system is manufactured, supplied, installed, used, maintained and removed. It does not purport in any way to restate the requirements of the Health and Safety at Work etc. Act 1974, or of any other statutory, common law or other duty which may exist at the date of issue or reissue of this Certificate; nor is conformity with such information to be taken as satisfying the requirements of the 1974 Act or of any statutory, common law or other duty of care.

British Board of Agrément tel: 01923 665300Bucknalls Lane fax: 01923 665301Watford clientservices@bba.star.co.ukHerts WD25 9BA www.bbacerts.co.uk©2015