BAL Bedding Mortar Grey 25kg
£22.15 inc. VAT
£18.46 ex. VAT
- Product ID: 40342
- Area of use: EXT
- Time to full cure: Paving should begin immediately.
- Volume: 25kg
- Colour: Grey
- Brand: BAL
- Manufactuer: BAL
- Box Size: 1
BAL Bedding Mortar is a pre-blended, high-performance cementitious mortar with graded fillers, designed for external use to bed pavers and tiles in accordance with BS 7533-4. Simply mixed with water, it is easy to prepare and apply in a single application at depths from 10mm up to 100mm (minimum 25mm on MOT Type 1). With over one hour of working time and the ability to be walked on after 12 hours, BAL Bedding Mortar provides a durable, freeze–thaw-resistant bedding solution ideal for external porcelain, natural stone, and paving installations on both bonded and unbonded substrates, including concrete and Type 1 MOT.
Key Points
– Pre-blended mortar; just add water for easy mixing and application
– Suitable for external pavers, 20mm porcelain, and natural stone to BS 7533-4
– Can be laid from 10mm to 100mm in a single application (minimum 25mm on MOT Type 1)
– Over 1 hour working time at 20°C, walkable in 12 hours, and freeze–thaw resistant
SHELF LIFE
12 months under normal dry conditions. Protect from frost and damp.
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Suitable For:
– External applications in both dry and wet conditions
– Laying mortar beds prior to fixing external pavers and tiles
– Bed depths from 10mm up to 100mm (minimum 25mm on MOT Type 1)
– Suitable for both domestic and commercial installations
NOT Suitable For:
– Walls
– Interiors
– Swimming Pools
PREPARATION
General
Substrates receiving BAL Bedding Mortar must be constructed using a suitable Type 1 MOT sub-base, laid to the correct depth and fully compacted. The sub-base must be stable and not prone to settlement, as the stated application thicknesses apply only to rigid, stable substrates.
All external pavers and tiles must be free from standing or pooling water. This is typically achieved by forming adequate falls to direct surface water toward a suitable drainage point such as a gully, linear drain, or the edge of the patio or terrace. Wherever possible, surface water should be directed away from buildings. All external paving installations require a stable and well-prepared base.
MIXING
1. Mix 25kg of BAL Bedding Mortar with 2 litres of clean water to achieve a semi-dry consistency.
2. When squeezed in the hand, the mixed mortar should retain its shape without crumbling, leaving the gloved hand slightly moist. When compacted onto the base, no surface film of water should appear.
3. Mix using a pan, trough, or other forced-action mixer. Free-fall mixers are not suitable for mixing semi-dry screed mortars. Ensure all equipment is clean and do not add additional cement, lime, screed additives, or other materials to the mix.
PREPARATION
– For unbonded mortar beds laid on a Type 1 MOT sub-base, or semi-dry bonded screeds applied to mature concrete in external environments, it is good practice to introduce adequate falls within the sub-grade or concrete to promote effective drainage and prevent ponding.
– Where patios are installed adjacent to buildings, particular care must be taken to ensure sufficient drainage and that finished levels remain well below any damp proof courses. The supporting sub-base must always be stable and not susceptible to settlement.
– Note: When applying to concrete substrates, prime with a 2–3mm layer of BAL Priming Slurry Bond and apply the mortar onto the wet slurry. Further guidance can be found in the relevant British Standards.
– The working time of mixed mortar exceeds 1 hour at 20°C. Limit the quantity of mortar mixed and the area worked so that levelling, finishing, and tile fixing can be completed within this time. Where new bays are laid against hardened mortar, vertical daywork joints are recommended and should be treated with BAL Priming Slurry Bond before applying fresh BAL Bedding Mortar onto the wet slurry.
THICKNESS
– On concrete substrates, BAL Bedding Mortar should be applied at thicknesses ranging from a minimum of 10mm up to a maximum of 100mm.
– On Type 1 MOT sub-bases, apply BAL Bedding Mortar between a minimum of 25mm and a maximum of 100mm. Sub-bases must be of a suitable Type 1 MOT grade, laid to the correct depth, fully compacted, and stable. The stated thicknesses apply only to rigid, stable substrates.
INSTALLATION: FIXING PAVERS/TILES
– While the mortar remains wet (within 1 hour at 20°C), apply BAL Priming Slurry Bond to the mortar bed using a brush, roller, or trowel. Apply the same slurry to the back of the porcelain tile to achieve 100% coverage and a total slurry thickness of 2–3mm before bedding the tile into the wet mortar.
– Adjust tile position as required and tap into place using a rubber mallet. BAL Bedding Mortar should be applied at temperatures of 5°C and rising.
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| Elementlength | |||||||
| up to 1,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
up to 2,5 m |
up to 3,5 m |
up to 4,5 m |
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| Type of window frame material |
Minimum witdth of joints for a butled mounting b in mm |
Minimum witdth of joints for a inner mounting b in mm |
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| Hard PVC (white) | 10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Hard PVC and PMMA (dark) (colour extruded) |
15 | 20 | 25 | 30 | 10 | 15 | 20 |
| Hard PUR integral foam | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Wood-aluminium-window | 10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (bright) |
10 | 10 | 15 | 20 | 10 | 10 | 15 |
| Aluminium-plastic sandwich frame (dark) |
10 | 15 | 20 | 25 | 10 | 10 | 15 |
| Wooden window frame | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
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