About this Product
weberset rapid SPF is a rapid-setting, flexible, low-dust, cement-based floor and wall tile adhesive, available in light grey or white for interior and exterior use.
It is used to fix all ceramic floor and wall tiles, mosaic, quarry, terrazzo, terracotta, porcelain and natural stone in situations where some movement or vibration is likely.
Features and Benefits
- Low Dust Technology™
- Manufactured under BSI Quality Assurance Scheme ISO 9001
- Can be used as a pourable adhesive
- Suitable for wooden floors overboarded with WBP plywood or suitable tile backer board
- Low-dust technology makes it more comfortable to use and reduces cleaning time
- Particularly suitable for situations where some movement or vibration is likely or when tiles are very large
- Ready for light foot traffic and grouting after 2 hours
- Available in light grey and white
Not recommended for tiling onto single layer wooden floors, e.g. chipboard, tongued and grooved timber.
Not recommended for tiles with resin backs. Please contact technical services for application advice.
Technical services Weber's Customer Services Department has a team of experienced advisors available to provide on-site advice both at the specification stage and during application. Detailed specifications can be provided for specific projects or more general works. Site visits and on-site demonstrations can be arranged on request.
Tel: (01525) 722110
Fax: (01525) 718988
Weber products are distributed throughout the UK through selected stockists and distributors. Please contact the relevant Customer Services Team below for all product orders and enquiries.
England and Wales:-
Tel: 08703 330070
Fax: 01525 718988
Scotland, Northern Ireland, Isle of Man, Republic of Ireland:-
Tel: 028 9335 2999
Fax: 028 9332 3232
Material Safety Datasheet
Declaration of Performance (DoP)
Preparation & Application
Ensure that all surfaces are clean, dry, sound and free from dust, grease or any contaminating barrier.
Make good any unsound areas and remove flaky or peeling layers before tiling. Porous or dusty surfaces should be primed using a suitable primer and allowed to dry.
Check before use that the colour of the adhesive does not cause staining or discolouration of light coloured or translucent tiles.
Gradually add approximately 4 parts of powder to 1 part of clean water (measured by volume), and mix to a smooth, workable, stiff paste (non-slip wall tiling requires 3.4 litres of water per 20 kg of adhesive and for floor tiling, 4 to 5 litres).
Use within 30 minutes of mixing.
Do not attempt to extend the pot life by adding more water to the mix.
Do not use at temperatures below 5°C.
Apply the adhesive onto the substrate covering up to 1 m² at a time (or no more than can be tiled within 10 minutes). Use a suitable notched trowel to achieve a bed thickness of 3 to 6 mm. Tiles with studded backs may need to have adhesive buttered onto the tile back as well.
Bed the tiles firmly into the adhesive with a slight sliding and/or twisting action, to ensure a good contact. It is good practice to lift an occasional tile after fixing, to verify that the required contact is being achieved. In wet areas, external areas and all floors, the final adhesive bed should be free from voids. Leave appropriate clearance joints for grouting and make any adjustments within 10 minutes.
Carefully clean off any excess adhesive with a damp cloth or sponge from the tiles and joints before it sets.
Leave for at least 2 hours before grouting. Longer is required at lower temperatures or when tiling onto impervious or sealed surfaces. For swimming pools, leave at least 3 days before grouting, and then leave for a further 3 weeks before filling.
Brick and blockwork
Allow at least 6 weeks before tiling.
Lightweight blocks need priming. Ensure that the wall face is sufficiently flat.
Cement/sand render or screed
Allow at least 3 weeks for screed and 2 weeks for render before tiling. Priming with weber PR360 may be required if the surface is very dusty or porous.
Allow at least 7 weeks before tiling onto new concrete. Surface should be clean and free from laitance - scabbling is recommended.
Existing ceramic/vinyl tiles
Ensure that the substrate is strong enough to take the weight of extra tiling, that the existing tiles are firmly adhered and that the surface is free from any wax, polish or detergent.
Plaster walls and anhydrite screeds
Leave plaster for at least 4 weeks before tiling. Ensure anhydrite screeds are fully dry (moisture content <0.5%). It is important that the surface is abraided and sealed by repeatedly coating with weber PR360 until the surface stops absorbing.
Underfloor heating/undertile warming
The heating must be off, and should be turned on gradually at least 5 days after tiling.
Wallboards; fibre/cement, plywood, plasterboard, MDF
Ensure boards are rigidly supported, clean, dry and free from dust. Plasterboard should be thoroughly primed with weber PR360 until the surface stops absorbing. Prime the reverse face and edges of plywood with weber PR360 before fixing.
Ensure the floor is rigid and capable of supporting the expected load with minimal deflection. Brace any areas that need extra support with noggins between the joists.
New WBP plywood floors should be a minimum of 18mm thick and all joints must be adequately supported.
Tongued and grooved timber and chipboard must be over-boarded. Existing boards should be screwed down to joists with two screws at each end and another two wherever they cross joists/noggins. For small floors with no noticeable deflection 9mm WBP plywood or suitable tile backer board can be used to provide a smooth surface to tile. If there is some limited deflection, a minimum of 15mm WBP plywood or equivalent tile backer board should be used to increase the rigidity of the floor. If there is still noticeable movement in the floor, another layer of plywood or tile backer board may be needed. New plywood boards should be primed on the reverse face and edges with weber PR360 and screwed down every 200-300mm. Slight gaps should be left between boards and at the perimeter for expansion. These should be filled with weber SL450 silicone sealant.
Allowance for movement
Flexible joints should be incorporated to allow for slight movements due to changes in temperature, humidity etc. as indicated by BS5385:
a) where the tiling meets other materials (e.g. floor perimeters)
b) along all internal corners - vertically and horizontally
c) over existing movement joints or changes in background material
d) dividing large tiled areas into bays (every 3 - 4.5 m on walls, 8 - 10 m on floors)
Packaging, Health & Safety
Packed in plastic lined paper sacks. Light grey and white 20 kg.
Coverage / Yield
Coverage is approximately 1.5 kg of powder per m² for every 1 mm of bed thickness.
Storage and Shelf Life
When stored unopened in a cool dry place at temperatures above 5°C, shelf life is 12 months from date of manufacture.
Health and Safety
Contains cement (Contains chromium (VI). May produce an allergic reaction). Harmful by inhalation. Irritating to eyes and skin. Keep out of the reach of children. In case of contact with eyes, rinse immediately with plenty of water and seek medical help. After contact with skin, wash immediately with plenty of soap and water. Wear suitable protective clothing, gloves and eye/face protection.
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