What goes with this?
Accessories and essentials for this job — add what you need.
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OX Trade Notched Stainless Steel Trowels
Notched trowel for spreading adhesive — pick the notch size for your tile
£11.99inc. VAT
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Larsen Acrylic Pink Primer 1L & 5L, Ready-to-Use Tile Primer
Larsen’s own primer — check suitability for your substrate
From £11.99inc. VAT
Description
Larsen FiberFlex Semi-Rapid Set+ (also written Fibreflex) is a fibre-reinforced, non-slip, cement-based tile adhesive classified C2 TE S1, for professional wall and floor tiling with large-format and very large-format tiles. This listing is the white version, supplied as a full pallet of 48 x 20kg bags, the usual choice under pale marble or porcelain that may be translucent. Larsen advises testing a small area first, as dark adhesive can show through.
Full pallet
48 x 20kg bags on one pallet. Tail lift delivery included.
Key properties
- Classification: C2 TE S1 to EN 12004 (flexible, extended open time)
- Fibre-reinforced, non-slip formulation
- Transverse deformation 2.5mm or more (S1)
- Suited to large-format and very large-format tiles, and to external use
- Bed depth 3–12mm, up to 20mm in small isolated areas
- Application temperature +5°C to +30°C
- Colour: white; pack size: 20kg bag
Coverage
Approximately 4 kg/m² at a 3mm bed.
Working and setting times
- Open time: 30 minutes or more at 20°C
- Pot life: approximately 45 minutes at 20°C; mixed adhesive stays usable for up to 2 hours depending on site conditions
- Setting time: approximately 4–5 hours at 20°C
- Grout and light foot traffic after 6 hours; full traffic after 12 hours
Application
- Mix 20kg of powder with approximately 5–6 litres of clean water: about 5 litres for walls, up to 6 litres for floors.
- Use a notched trowel on dry wall areas. Use a solid bed on wet wall areas, all external tiling and all floor tiling. Dot-and-dab fixing is not acceptable.
- For very large-format tiles, skim the back of the tile with a thin layer of adhesive.
- Over underfloor heating, switch the heating off at least 48 hours before tiling and do not switch it back on until at least 7 days afterwards, then raise it by no more than 5°C per 24 hours. Allow for movement joints.
- Timber floors need overboarding with at least 15mm exterior-grade plywood, screwed at 300mm centres. Timber is not permitted externally or in wet areas.
What goes with it