Sika Grout Calculator — SikaTile CEG, Flex & Epoxy Coverage

They are completely different products in completely different categories. SikaTile CEG, Flex, and Epoxy are tile grouts — designed to fill 1/8 to 1/2 in joints between ceramic, porcelain, or stone tiles. SikaGrout 212 and 215 are structural non-shrink grouts — designed to fill anchor bolts, machine bases, precast concrete connections, and core holes in concrete block walls (the Quikrete page covers that application). Never use SikaGrout 212 as tile grout — it has coarse aggregate that scratches tile surfaces and its chemistry causes efflorescence through the fine joints. And never use SikaTile CEG as structural grout — it has no coarse aggregate for load transfer.

Coverage in kg/m² is density × joint volume L/m². SikaTile CEG density is 1.75 kg/L. For a 12 × 12 × 3/8 in tile at 1/8 in joints: joint volume = 1.82 L/m² → coverage = 1.82 × 1.75 = 3.19 kg/m². One 5 kg bag covers about 1.57 m² (≈ 17 ft²) at that geometry, or 15 m² (≈ 161 ft²) at the 16 × 16 in reference geometry Sika publishes on their data sheets. Always compute from your own exact tile and joint — Sika's reference geometry (16 × 16 in, 1/8 in, 10 mm depth) is not every job.

Pick SikaTile Epoxy if any of these are true: your tile floor sees food grease (kitchen counters, pizza shops), your shower steams daily (steam rooms, pool surrounds), or you will never remember to re-seal cement grout every 1–3 years. Sika epoxy costs about 3× SikaTile CEG per square foot but needs zero sealing, resists stains completely, and cleans with a damp cloth. Pick SikaTile CEG or Flex for standard residential bathrooms, backsplashes, and floors — it is easier to install, cures fast, and handles everything a typical home throws at it. For metal, resin, or glass tiles, SikaTile Flex is mandatory — the grout must flex with those substrate materials.

Both are structural non-shrink grouts, but SikaGrout 212 is a high-strength rapid-hardening formulation (24-hour compressive strength ≥ 50 N/mm²) for anchor bolts, dowels, and machine base grouting. SikaGrout 215 is a normal-set non-shrink grout (28-day ≥ 65 N/mm²) for larger volume core fills, precast connections, and concrete wall repairs. Neither is tile grout — they contain coarse aggregate and must not be used in tile joints. SikaGrout 212/215 coverage is in cubic feet per bag, not kg/m² — a 50 lb bag of SikaGrout 212 yields about 0.45 ft³ of mix.

6–7% by weight for SikaTile CEG — that is 0.30–0.35 L of water per 5 kg bag. Too much water creates efflorescence, reduces compressive strength, and makes the grout more porous. Too little water makes it too dry to spread and leaves undispersed cement clumps. Measure the water precisely with a graduated pitcher — eyeing it from the faucet is the most common Sika installation mistake. For SikaTile Epoxy, mix 100 parts by weight Part A to 10 parts Part B — no water at all.