Common issues reported by contractors and manufacturers include:
Industry consensus:
These problems are typically related to water retention, adhesion system design, and rheology balance (widely recognized in dry-mix mortar technology and tile adhesive standards such as EN 12004).
We approach tile adhesive as a system, not a single ingredient. Our solutions focus on:
Practical guidance for on-site mixing and application — aligning laboratory formulations with real-world conditions. Our experience shows: 80% of on-site failures are not due to material quality, but formulation mismatch.
Disclaimer: The following formulations are for reference purposes only.
Adjustments may be required for local materials, climate, or project conditions. Celotech does not guarantee results; final testing on-site is recommended.
| Celotech Product Series | Function |
| Celopro® MT | Water retention, open time, workability |
| Vinabond® | Adhesion, flexibility |
| Stargel® ST | Slip resistance, trowel ease |
| Quickset® | Air control, surface finish |
| Material | Function |
| Celopro® MT | Consistent viscosity |
| Vinabond® | High bonding strength |
| Quickset® | Faster cement hydration and setting, Improved early strength development |
Tip from our engineers: Adjusting HPMC viscosity or RDP dosage slightly can solve most open time and adhesion issues without increasing cost.
Celotech can help you custom your formulation or adjust the formulation to saving cost and improving, In most cases, adjusting formulation ratios has a greater impact than changing raw material type.
| Product | Grade | Recommend application | Character |
| Cellulose ether | Celopro® MT2030 | C1TE/C2TE/C2TES1 | Low viscosity |
| Celopro® MT4016 | C1TE/C2TE/C2TES1 | Medium viscosity | |
| Celopro® MT6510 | C1TE/C2TE/C2TES1 | High viscosity | |
| Celopro® MT6108 | C1TE/C2TE | Medium viscosity | |
| Celopro® ME50M | C1TE/C2TE | Medium viscosity | |
| Celopro® ME70M | C1TE/C2TE | High viscosity | |
| RDP | Vinabond® N511 | C1TE/C2TE | Rigid(Vac/E) |
| Vinabond® N515 | C1TE/C2TE/C2TES1 | Neutral (Vac/E) | |
| Vinabond® N516 | C2TES1 | Flexible(Vac/E) | |
| Starch ether | Stargel® ST600 | C1TE/C2TE/C2TES1 | HPS |
| Cellulose fiber | Celofiber® CF300W | C1TE/C2TE/C2TES1 | 300um,white colour |
| Early strength agent | Quickset® S98 | C1TE/C2TE/C2TES1 | Calcium formate |
| Product | Character | Grade | C1 | T | E | C2 | S1 |
| Cellulose ether | Low viscosity | Celopro®MT2030 | ●●● | ●● | ●●● | ●●● | ●● |
| Medium viscosity | Celopro®MT4016 | ●●● | ●●● | ●● | ●●● | ●● | |
| High viscosity | Celopro®MT6510 | ●●● | ●● | ●● | ●● | ||
| Medium viscosity | Celopro®MT6108 | ●●● | ● | ●● | ●● | ||
| Medium viscosity | Celopro®ME50M | ●●● | ● | ●● | ●●● | ●● | |
| High viscosity | Celopro®ME70M | ●●● | ● | ●● | ●● | ||
| RDP | Rigid(Vac/E) | Vinabond® N511 | ●● | ●● | ●● | ||
| Neutral (Vac/E) | Vinabond® N515 | ●●● | ●● | ●●● | ●● | ||
| Flexible(Vac/E) | Vinabond® N516 | ●● | ●● | ●● | ●●● | ||
| Starch ether | HPS | Stargel® ST600 | ●●● | ●● | |||
| Cellulose fiber | 300um,white colour | Celofiber® CF300W | ●● | ●● | |||
| Early strength agent | Calcium formate | Quickset® S98 | ●●● | ●● |
Every employee at Celotech is committed to the pursuit of excellence in quality performance. Our company has set up application laboratories in many countries to ensure the stability and quality control of each batch of goods. We use professional instruments such as Halogen Moisture Meters, High-temperature Muffle Furnaces, Spectrophotometers and Brookfield viscometers to accurately test the moisture, ash, transmittance and viscosity of HPMC, HEMC, HEC and CMC products, which greatly improves production efficiency and greatly reduces the defective and unqualified rates.
With reasonable production volume and an experienced logistics team, Celotech is able to produce and deliver products to customers in a relatively short period of time with guaranteed quality and quantity. Whether it is domestic transportation, sea transportation, air transportation, etc., the Celotech team has always maintained friendly cooperation with many freight forwarding companies.
Celotech is committed to providing high-quality construction chemicals to customers around the world. Our products include cellulose ethers, redispersible latex powders, etc., which are widely used in architectural coatings, dry-mix mortars and other fields. As an international company committed to innovation and quality, we understand the importance of sample testing when selecting new products. To help customers better evaluate the performance of our products, Celotech provides free samples for you to test in actual applications.
Open time refers to the operating time of cement mortar. The work-ability of cement mortar is maintained well during the opening time, and after the open time is exceeded, not only the construction performance will deteriorate, but the strength will also be reduced.
