Mapei Keraquick XL Fibrelite is a fibre reinforced high yield cement based rapid setting adhesive for interior and exterior use when installing porcelain, ceramic and natural stone materials. Suitable for fixing tiles up to 1500 x 1500mm.

Where to use:

Interior and exterior bonding of ceramic and porcelain tiles and mosaics and natural stone materials that are not sensitive to moisture. Ideal for large format tiling.

Some application examples

Fixing tiles up to 1500 x 1500 mm in size.

Installation on to suitably prepared timber substrates such as 15mm overlaid plywood floors.

Suitable for use in large commercial environments.

Suitable for internal and external use.

Installing marble and natural stone materials.

Suitable for installation over wet and electrical underfloor heating systems.

Suitable for installation of tile on prepared calcium sulphate screeds (anhydrite)

Technical Characteristics

Keraquick XL Fibrelite is a powder composed of a mixture of special cements, selectively graded aggregates, synthetic resins, fibres and setting accelerators that develop a high bond strength only 90 minutes after setting. For this reason floor installations can be completed very quickly. Floors can be walked on after only 90 minutes and are ready for general foot traffic after 12 hours. When hardened, Keraquick XL Fibrelite is frost and water resistant.

How to Apply

Keraquick XL Fibrelite is applied to the substrate with a notched trowel to a max 15 mm in thickness. Adhesive coverage will be determined by the notch size chosen and should be 100% as far as possible for floors, exterior and wet areas. For tiles exceeding 300x300 mm Keraquick XL Fibrelite should also be applied to the backs of the tiles (back-buttering). For very absorbent surfaces or during hot weather the substrate should be dampened to extend the

open time of the adhesive. It is not necessary to wet the tiles before fixing, however if the backs of the tiles appear dusty they should be wiped over with a wet sponge.

Keraquick XL Fibrelite has an open time of 15-20 minutes in normal temperature and humidity; unfavorable weather conditions (strong sun, drying wind, high temperature), or a highly absorbent substrate will shorten this open time, sometimes to just a few minutes. Should the adhesive form a skin it should be removed and fresh adhesive applied. Tiling fixed with Keraquick XL Fibrelite must not be subjected to washout or rain for at least 60 minutes and protected from strong sun and frost for at least 12 hours