Mortex is the cement-lime-polymer hybrid microcement that defines the "waterproof in the mass" category. Manufactured by Beal International in Belgium, the product is built around a chemistry that combines hydraulic cement, slaked lime, and acrylic resin to deliver a microcement matrix that does not need a separate waterproof membrane below it on stable substrates. In IL practice, Mortex is the default specification for bathroom and shower work where the owner does not want to negotiate a tanking layer with the contractor.
The chemistry that makes Mortex different
Standard cement-polymer microcements (Topciment Sttandard, Pavistamp PAVICEM, Sika MicroTop) are permeable in the matrix and require a polyurethane sealer to achieve waterproofing in service. Pure lime products (Marmorino, Tadelakt) are breathable and partly water-repellent but soft. Mortex takes a hybrid path: it combines cement for hardness and dimensional stability with slaked lime for partial breathability, then adds an acrylic resin that fills the pore network with a hydrophobic film.
The result is a matrix that is not actively absorbing water in normal use. Surface water beads. The owner can shower on Mortex for ten years and the substrate beneath stays dry — provided that the substrate-to-microcement joint and the wall-to-floor junction are properly detailed. Beal's technical documentation publishes the test data; specifying the product without reading the TDS once is a missed opportunity to understand the chemistry that makes it different from the cement-polymer alternatives.
The product range
- Mortex (standard)
- The reference cement-lime-polymer 2–3 mm system. Available in 40 standard pigment tones, with custom matching available. Floor, wall, shower, basin, pool. The default Mortex specification.
- Mortex Fine
- Finer granulometry for wall finish and feature surfaces. Slightly softer hand than standard; not recommended for floor traffic above light residential.
- Mineral Skin
- Beal's lighter-pigment line on the same chemistry. Pastel and pale tones that the standard Mortex pigment range does not cover. Same waterproofing properties.
- Mortex Color (custom)
- NCS / RAL custom-tone matching. Used in luxury residential and hospitality where the standard palette is not enough.
Where Mortex wins
- Bathroom without separate membrane. The mass-waterproof property is real and tested. For residential bathrooms on stable substrates, Mortex eliminates the tanking step, saving install time and avoiding a typical interface failure point. Shower zones should still have tanking — Mortex protects the matrix, not the joint between substrate and microcement.
- Organic, soft finish. The lime fraction gives Mortex a slightly warmer, less "industrial" surface character than pure cement-polymer products. For modern Mediterranean and Israeli design vocabularies, this matters aesthetically.
- EU heritage credentials. Beal has been manufacturing this product since 1996; the formula is mature, the failure modes are well-documented in their own technical bulletins. Mortex is a known quantity in EU specification.
Where Mortex loses
- Softer than pure-cement. Surface scratch resistance is lower than Topciment Sttandard or Pavistamp PAVICEM. For heavy commercial traffic, Mortex is the wrong default.
- Acid-sensitive. The lime fraction reacts with citrus, vinegar, and wine more readily than cement-polymer matrices. In kitchens, sealer renewal interval shortens to ~18 months from the typical 24.
- Slower cure. Carbonation takes weeks to complete in addition to the cement hydration. Functional traffic is similar to cement-polymer (24–48 h), but full chemical resistance arrives later than the competition.
- IL applicator pool is thin. Probably under a dozen IL applicators have multi-year Mortex-specific experience. Specify by importer reference; demand applicator certification.
IL distribution
Mortex is imported into IL through specialty decorative-finish distributors. There is no single exclusive IL channel comparable to Gilar's Sika relationship. Verify with the local Beal importer before tender close: stock, lead time, applicator references. The brand has been present in IL for over a decade in specialty residential work but does not appear at the volume of Topciment or Sika DecoDur.
Final read
Mortex is the right specification for bathroom and shower work where mass-waterproofing simplifies the build and the owner accepts a slightly softer surface in exchange for the no-membrane simplicity. It is the wrong specification for heavy-traffic commercial floors or for kitchens where citrus and acid exposure is daily. The 7-way microcement brand comparison covers the cross-brand alternative paths in depth.
Related: Microcement 7-way comparison · Binder chemistry deep dive · Microtopping system page.
Sources
- Beal International — Mortex product page
- Artalis — Mortex bathroom case studies
- EN 13813 CT-binder classification.