Fixing

110
TILING TO INTERNAL DRY WALLS - GYPSUM PLASTER
Tiles : Glass mosaics:-
1. Large Square
2. Medium Square
3. Small Square
4. Long Bar
5. Pebbles
6. Green Square
7. Standard Tile
Size : Various
Base/Background :Gypsum plaster
Preparation :General preparation as clause 300
Bedding :BAL-THIN BED SOLID BED TROWEL (WALLS) as clause 740
Adhesive :BAL MOSAIC-FIX
Grout :BAL MICROFLEX WALL GROUT, BAL SUPERFLEX WALL GROUT or BAL MICROCOLOUR WALL GROUT
Colour : Tba
Joint width : Tba
Movement Joints (WALL)
Sealant movement joint as clause 622

111
TILING TO INTERNAL DRY WALLS - PLASTERBOARD WALLS
Tiles : Glass mosaics:-
1. Large Square
2. Medium Square
3. Small Square
4. Long Bar
5. Pebbles
6. Green Square
7. Standard Tile
Size : Various
Base/Background :Plasterboard
Preparation :General preparation as clause 300
Bedding :BAL-THIN BED SOLID BED TROWEL (WALLS) as clause 740
Adhesive :BAL MOSAIC-FIX
Grout : BAL MICROFLEX WALL GROUT, BAL SUPERFLEX WALL GROUT or BAL MICROCOLOUR WALL GROUT
Colour : Tba
Joint width : Tba
Movement Joints (WALL)
Sealant movement joint as clause 622

112
TILING TO INTERNAL DRY WALLS - CEMENT:SAND RENDER WALLS
Tiles : Glass mosaics:-
1. Large Square
2. Medium Square
3. Small Square
4. Long Bar
5. Pebbles
6. Green Square
7. Standard Tile
Size : Various
Base/Background :Existing cement : sand render
Preparation :General preparation as clause 300
Bedding :BAL-THIN BED SOLID BED TROWEL (WALLS) as clause 740
Adhesive :BAL MOSAIC-FIX
Grout : BAL MICROFLEX WALL GROUT, BAL SUPERFLEX WALL GROUT or BAL MICROCOLOUR WALL GROUT
Colour : Tba
Joint width : Tba
Movement Joints (WALL)
Sealant movement joint as clause 622

113
TILING TO INTERNAL DRY WALLS - EXISTING GLAZED CERAMIC WALL TILES
Tiles : Glass mosaics:-
1. Large Square
2. Medium Square
3. Small Square
4. Long Bar
5. Pebbles
6. Green Square
7. Standard Tile
Size : Various
Base/Background :Glazed ceramic tiles
Preparation :General preparation as clause 300
Bedding :BAL-THIN BED SOLID BED TROWEL (WALLS) as clause 740
Adhesive :BAL MOSAIC-FIX
Grout : BAL MICROFLEX WALL GROUT, BAL SUPERFLEX WALL GROUT or BAL MICROCOLOUR WALL GROUT
Colour : Tba
Joint width :Tba
Movement Joints (WALL)
Sealant movement joint as clause 622

114
TILING TO INTERNAL DRY WALLS - TILE BACKER BOARD WALLS
Tiles : Glass mosaics:-
1. Large Square
2. Medium Square
3. Small Square
4. Long Bar
5. Pebbles
6. Green Square
7. Standard Tile
Size : Various
Base/Background :Tile backer boards
Preparation :General preparation as clause 300
Bedding :BAL-THIN BED SOLID BED TROWEL (WALLS) as clause 740
Adhesive :BAL MOSAIC-FIX
Grout : BAL MICROFLEX WALL GROUT, BAL SUPERFLEX WALL GROUT or BAL MICROCOLOUR WALL GROUT
Colour : Tba
Joint width : Tba
Movement Joints (WALL)
Sealant movement joint as clause 622
Sealant type :BAL Microseal Silicone Sealant

200
BAL PRODUCTS: will be applied strictly in accordance with the sitework instructions on the manufacturer's product data sheets. All BAL products are covered with a 10 year guarantee, except cleaning products.

205
MICROBAN®:  Microban® antibacterial protection is not a substitute for good hygiene practices. In order to obtain the best possible long term antibacterial protection, it is strongly recommended that the tiled surface is regularly cleaned with BAL-Microshield cleaner incorporating Microban® antibacterial protection from the BAL-Pro-Hygiene Systems range. Microban and the Microban Symbol are trademarks of the Microban Products Company, Huntersville, NC.

210
INSTALLATION: will be carried out by trained operatives only, using safe working methods and where necessary, suitable protective clothing and equipment.

220
SUITABILITY OF BACKGROUNDS/BASES: Before starting work it will be ensured that backgrounds/bases are:
- Sufficiently flat to permit the specified flatness of finished tiling.
- Suitable for tiling in the service conditions to which they will be exposed.
- Sufficiently strong and rigid to support the tile finish.
If any of the above requirements are not met, the Site Supervisor will be informed and
corrective measures agreed.

222
NEW CEMENT:SAND RENDERING: Before commencing tiling, rendering will have been allowed to dry out by exposure to air for at least 2 weeks (3 weeks for swimming pools) or, for rendering based on BAL-QUICKSET CEMENT, 24 hours.

223
NEW GYPSUM PLASTER: Before commencing tiling, plaster will have been allowed to dry out by exposure to air for at least 4 weeks. If the surface to be tiled is dusty, this will be removed by thorough dry brushing after which the surface will be primed using BAL-BOND SBR (diluted 1:4 with clean water), or BAL-PRIME APD (diluted 1:1 with clean water).

280
SAMPLES: Before placing orders representative sample(s) of _ will be submitted. It will be ensured that delivered materials match the sample(s).

290
CONTROL SAMPLE(S): Sample area(s), being part of the finished work in agreed location(s), will be completed and approval of appearance will be obtained before proceeding.

300
EXISTING BACKGROUNDS/BASES GENERALLY: - Any efflorescence, laitance, dirt and other loose material will be removed.
- Any deposits of oil, grease and other materials incompatible with the bedding will be removed.
- All tile, paint and other non porous surfaces will be cleaned down by washing with water containing detergent, then with clean water.
- The background/base will be allowed to dry before fixing tiles.

310
EXISTING CONCRETE/BRICK/BLOCK/RENDER BACKGROUNDS: All loose or hollow portions will be cut out and made good with a 1:3 cement: sand mortar applied over a slurry bonding coat as clause 510.

330
GYPSUM PLASTER BACKGROUNDS: Excessive towelling of plaster to improve its appearance may result in a dusty or dense polished surface which is not suitable for tiling.
The maximum weight of tiling which can be supported by a dry, sound gypsum plaster finish is 20kg/m², which is equivalent to tiles with a thickness of 8mm.
Last item: This item is included to cover only minor areas of making good. If a substantial amount of making good or re-plastering is needed, it should be specified, this item being deleted.

- It will be ensured that the finish coat has been applied, that the plaster is dry throughout and free from dust, efflorescence and friable material before being tiled. If the plaster surface is dusty, this will be removed by thorough dry brushing and the surface primed using BAL-BOND SBR (diluted 1:4 with clean water), or BAL-PRIME APD (diluted 1:1 with clean water).
- Any defective areas will be cut back, including loose or badly cracked plaster, to straight horizontal and vertical edges. The background and edges will be thoroughly dry brushed and made good with plaster or a suitable non shrinking filler.

Gypsum Plasterboard

340
GYPSUM PLASTERBOARD BACKGROUNDS: It will be ensured that sheets are dry, securely fixed and rigid with no protruding fixings and the face intended to receive the decorative finish is exposed.
Gypsum plasterboard is a suitable background where the weight of tiling does not exceed 32 kg/m² (equivalent to tiles with a thickness of 12.5mm).
The plasterboard should comply with BS 1230: Part 1 and be:
- Type 3 where there will be any exposure to moisture.
- Not less than 12.5mm thick.
- Fixed with screws or nails at 300mm centres both horizontally and vertically to seasoned timber or suitable proprietary framed supports.
- Rigid and free from springiness and surface undulations.
Plasterboard wall linings fixed with plaster dabs or adhesive should be allowed to stand for 10 days before being tiled.

351
TILE BACKER BOARDS/FIBRE CEMENT SHEETS: It will be ensured that sheets are dry, securely fixed at a maximum of 300mm centres, rigid and that the fixings do not protrude.

390
GLAZED TILE/BRICK BACKGROUNDS: - It will be ensured that the existing tiles are firmly adhered to their bed and that the bed is sufficiently strong to support the weight of new tiling. Loose or hollow sounding tiles will be removed and made good with a 1:3 cement: sand mortar applied over a slurry bonding coat as clause 510 or with a suitable non shrinking filler.
- Defective areas of glazed bricks will be cut out and made good with a 1:3 cement: sand mortar applied over a slurry bonding coat as clause 510.

510
SLURRY BONDING COAT: - For mortar using Portland cement:
- 2 parts Portland cement to BS 12, class 42.5 to 1 part BAL-BOND SBR will be mixed by weight.
- For mortar using BAL-QUICKSET CEMENT:
- 2 parts BAL-QUICKSET CEMENT to 1 part BAL-BOND SBR pre-diluted 1:1 with clean water will be mixed by weight.
- The slurry bonding coat will be brushed on to the background/base immediately before applying the mortar.

600
FIXING GENERALLY: - It will be ensured that there are no unintended colour/shade variations within the tiles for use in each area/room.
- Variegated tiles will be thoroughly mixed.
- Tiles will cut neatly and accurately.
- Before the bedding material sets, adjustments will be made to give a true, regular appearance to the tiles and joints when viewed under their final lighting conditions.
- Surplus bedding material will be cleaned from the joints and face of the tiles without disturbing them.

610
ADVERSE WEATHER: - Tiles will not be fixed if the temperature is below 5°C or in damp conditions.
- Frozen materials will not be used nor will adhesives be applied to frozen or frost covered surfaces.
- Tiles will not be fixed if the temperature of the background/base is in excess of 65°C.
- Adequate precautions will be taken to protect work from inclement weather, frost and premature drying out.

620
SETTING OUT GENERALLY: - Joints will be true to line, continuous and without steps.
- Joints on walls will be truly horizontal, vertical and in alignment round corners.
- Joints in floors will be parallel to the main axis of the space or specified features.
- Cut tiles/slabs will be kept to a minimum and will be as large as possible and in unobtrusive locations.
- Joints in walls and floors will be in alignment where practicable.
- Where positions of movement joints are not specified they will be agreed with the Site Supervisor.
- The setting out of _ will be in accordance with drawing(s) _.

622
SETTING OUT MOVEMENT JOINTS (INTERIOR WALLS): - Movement joints in tiling will be provided:
- Over existing and/or structural movement joints.
- At abutments with other surfaces.
- Over junctions between different background materials.
- At internal vertical corners.
- At 3-4.5 m centres horizontally and vertically
- Joints will be at least 6mm wide and extend through the tiles and bedding to the substrate.
- Joints located over structural movement joints will extend through any intermediate substrate and be _ mm wide.

640
FLATNESS OF TILING: Sudden irregularities will not be permitted. When checked with a 2m straightedge with 3mm thick feet at each end, placed anywhere on the surface, the straightedge will not be obstructed by the tiles and no gap will be greater than 6mm.

740
ADHESIVE BEDDING: THIN-BED/SOLID-BED: - A BAL-THIN-BED SOLID-BED TROWEL will be used, or where the background/base is not sufficiently flat to achieve a solid bed of adhesive with this trowel, a BAL-THICK-BED SOLID-BED TROWEL will be used.
- The adhesive will be applied to the dry background/base in areas up to 1m². For porous backgrounds/bases, a skim coat of adhesive will first be applied prior to combing the remaining adhesive while the skim coat is still wet.
- Any depressions (ribbed, keyed profiles, etc.) to the backs of tiles will be filled with adhesive.
- Tiles will be pressed firmly into the adhesive with a twisting/sliding action ensuring that as far as possible no voids are left behind the tiles.
- The use of a BAL Mosaic Trowel should be considered when fixing mosaic tiles.

805
FIXING MOSAIC (WALLS / WORKTOPS): - For paper faced mosaic: Mosaic sheets will be pre-grouted and any surplus will be removed before fixing.
- Mosaic sheets will be placed in position as accurately as possible and tapped down with a wooden beater so that full contact with the adhesive is achieved. The width, plane and alignment of joints between sheets will match the joints between the mosaic tesserae.
- For paper faced mosaic: The paper will be wetted and carefully removed before the adhesive hardens completely. Surplus adhesive and glue will be washed off from the face of the mosaic. Grouting will then be completed.
- The use of a BAL Mosaic Trowel should be considered when fixing mosaic tiles.

880
CHECKING CONTACT AREA: As work proceeds and before the bedding has set, random tiles will be carefully removed to verify that the contact area is as specified. The initial bedding material will be removed and the removed tiles will be buttered with fresh material and re-fixed.

900
GROUTING: - The bedding material will be allowed to harden sufficiently before grouting.
- It will be ensured that joints are 6mm deep (or the depth of the tile if less), and are free from dust and debris.
- Joints will be completely filled using a rubber grouting squeegee and tooled to an approved profile. The surface will be cleaned off and left free from blemishes.

910
COLOURED GROUT: The potential risk of staining will be checked by applying the grout to a few tiles in a small trial area. If discolouration occurs BAL-PROTECTIVE SEALER will be applied and the trial repeated.

920
SUITABILITY OF MOVEMENT JOINTS: Before commencing, it will be ensured that:
- Joint dimensions are within the limits specified for the sealant.
- Surfaces are smooth and undamaged.
- Preparatory work which should have been done before the assembly of the joint has been carried out.
- The site supervisor will be informed if the joints are not suitable to receive the sealant and proposals for rectification will be submitted.

930
PREPARING MOVEMENT JOINTS: - The surfaces to which the sealant must adhere will be cleaned using methods and materials recommended by the sealant manufacturer.
- All temporary coatings, tapes, loosely adhering material, dust, oil, grease and other contaminants which may affect the bond will be removed.
- Joints will be kept clean and protected from damage until the sealant is applied.
- Backing strip, bond breaker, primer: Types recommended for the purpose by sealant manufacturer.
- Backing strips and/or bond breaker tape will be inserted into the clean joint leaving no gaps. If the adhesive used to fix the tiles was BAL-FLEX or BAL-FASTFLEX, it will be ensured that the backing strip and/or tape prevent contact between the silicone sealants and the adhesive.
- Adjacent surfaces will be covered with masking tape to prevent staining and to protect the surfaces which would be difficult to clean if smeared with primer or sealant.

950
APPLYING SEALANTS: - It will be ensured that the operatives observe the manufacturer's and statutory requirements for storage and safe usage of the sealants.
- Equipment and methods recommended by the sealant manufacturer will be used and applied within the recommended application life of the primer and the sealant, and the recommended air and substrate temperature ranges.
- Sealant will not be applied to damp surfaces (unless permitted otherwise), to surfaces affected by ice or snow or during inclement weather. Joints will not be heated to dry them or to raise their temperature.
- Joints will be filled completely, leaving no gaps, excluding all air and ensuring the firm adhesion of the sealant to the required joint surfaces. The sealant will be tooled to a neat, slightly concave profile unless specified otherwise.
- The sealant will be protected until cured.

960
PROTECTION (GENERAL): All completed areas will be adequately protected and kept clean. Any droppings will be cleaned off immediately.

Building Adhesives Limited "Powerspec" programme online - notice

2.2 use of the ID and password must comply with any instructions from time to time given in connection with accessing or using the "Powerspec" programme on line.

3.2 We do not warrant that information or software provided or communications transmitted in connection with the operation of the "Powerspec" programme will be accurate or error free or free from viruses.

3.3 We accept no liability in the event that the online use of the "Powerspec" programme becomes wholly or partly unavailable at any time for whatever reason nor do we accept liability for any unauthorised access to, or any alternation, theft, corruption or destruction of information or data howsoever caused.
3.4 We accept no responsibility for the content of web sites or pages linked to any site provided by us in connection with the provision of the "Powerspec" programme.

3.5 Although we have endeavoured to make colours on the screen as close as possible to the ones we supply we accept no responsibility for the accuracy of the colour match. In particular colours may very depending on your screen settings and resolution. In case of doubt you should check the products.

3.6 You acknowledge that unless otherwise agreed in writing we have an unlimited right to use and disclose and permit the further use and disclosure of such information provided by you in connection with your use of the "Powerspec" programme online and such information shall be non-confidential.

3.7 Except to the extent stated in these conditions or otherwise agreed in writing we shall have no obligation, duty or liability in contract, tort (including negligence or breach of statutory duty) or otherwise howsoever in connection with the supply of the "Powerspec" programme online other than for death or personal injury resulting from our negligence or for fraud on the part of any of its employees whilst acting in the course of their employment. In particular, we shall have no liability for any consequential loss or damage suffered, directly or indirectly, by you or any third party arising from the operation or in connection with any contract of the "Powerspec" programme online, including but not limited to wasted time or expenditure, loss of profits, production, business revenue, expected savings or goodwill or any claim by any person.

4.2 You are reminded that you should not use the "Powerspec" programme for any purpose for which you are not authorised. For example if you are an employee it should not be used except in the proper performance of your employment.

4.3 You accept responsibility for and shall indemnify us against all costs, liabilities, costs and expenses we may incur arising from the use of the ID and/or password by any person other than yourself or the use of the "Powerspec" programme for any unauthorised purpose.

4.4 We reserve the right at any time without notice to cancel the right to use any ID or password in our discretion.

5.2 You shall not use or permit the use (except in connection with the purchase of goods from us) or copy or modify in any way any information, software or other material provided by us without our prior written authorisation or except as may be required by law.

5.3 All information you acquire in connection with the "Powerspec" programme and its use online shall be treated by you as confidential, during and after the period of your use of the "Powerspec" programme except so far as such information is or becomes publicly available otherwise than in breach of this obligation or as may be required by law.

8.2 You shall indemnify us against any loss, damage or injury to us and against any claim in respect of loss, damage or injury made against us and all costs and expenses in connection therewith which results from any breach by you of these conditions or any improper use of the "Powerspec" programme or any information we supply in the course of its use by you.

8.3 These conditions do not confer any right enforceable by any third party in connection with the use of the "Powerspec" programme online.

8.4 The law applicable to these conditions is English law and you submit to the jurisdiction of the English courts in all matters connected with these conditions.

8.5 In these conditions "we" means Building Adhesives Limited and "you" means the user.