Meta description: For Turkey’s earthquake-driven urban renewal and existing building renovation, coastal (Antalya, Izmir, Istanbul) and inland building facades, we provide Flexible Stone (MCM / esnek taş) system solutions covering BYKHY Article 27 28.50 m height-triggered A2-s1,d0 cladding fire compliance, TSE import inspection and CE access, coastal salt spray/strong UV and inland freeze-thaw/large temperature difference layered adaptation, and seismic-zone lightweight non-structural component compliance and system delivery pathways.
Keywords: Turkey flexible stone, Flexible Stone, MCM, esnek taş, BYKHY, A2-s1,d0, TSE, CE, urban renewal, earthquake, salt spray, UV
Quick Answer: What Is the Turkey Flexible Stone Market Solution?
The Turkey Flexible Stone market solution uses Flexible Stone (MCM / modified inorganic powder composite facing sheet, commonly known in the Turkish market as esnek taş / esnek taş panel) as cladding and provides an integrated solution for Turkey’s earthquake-driven large-scale urban renewal, coastal high-rise and commercial buildings, and inland existing building renovation, covering BYKHY height-triggered A2-s1,d0 cladding fire compliance + TSE/CE import access + seismic-zone lightweight non-structural component compliance + coastal/inland layered climate adaptation + local distribution and system delivery.
The key judgment for entering the Turkish market is concentrated on a mandatory fire threshold triggered by building height. BYKHY (Binaların Yangından Korunması Hakkında Yönetmelik, Regulation on Fire Protection of Buildings) Article 27(1) stipulates: buildings with a height exceeding 28.50 m must use “limited-combustibility” materials for external walls; other buildings must use at least “low-combustibility” materials. According to the classification correspondence in Annex 2/Ç, “limited-combustibility” means A2-s1,d0. This threshold and the 21.50 m high-rise definition are two independent thresholds and must not be confused. At the same time, Turkish fire regulation tightened significantly after the 2023 earthquake; the Turkish construction market was about USD 173.56 billion in 2025, and the renovation market reached about EUR 19 billion in 2024 and is expected to grow to EUR 23–26 billion by 2027.
Core judgment: The Turkish market already has local brands and channels for esnek taş / MCM. Flexora Stone (Ankara) promotes flexible stone as “MCM Stone” and explicitly compares performance differences with natural stone, ceramic, paint and ACP; Piks Stone emphasizes that MCM technology uses recycled construction waste and inorganic materials, reducing energy and raw material consumption by up to 80%. Category awareness has formed, and the market question is not “whether to educate” but “with what fire rating, what TSE documents, and what seismic-zone lightweight component compliance basis to enter urban renewal and formal procurement processes“.
1. Why Does the Turkish Market Need a Flexible Stone System Solution?
The drivers of the Turkish facade market are concentrated in three lines: mandatory urban renewal driven by earthquake risk, screening of high-rise cladding by BYKHY height-triggered fire classification, and two completely different climate failure mechanisms on the coast and inland.
Driver 1: Earthquake risk has turned urban renewal into a decades-long certain existing-building market, and lightweight non-structural components are a rigid demand. About 10,000 dangerous buildings are demolished and rebuilt each year in Istanbul, and about 20,000 nationwide. Since the 2012 Urban Transformation Law, more than 1.274 million independent property units in Istanbul have been included in transformation programs, of which 998,000 have completed construction and 276,000 are underway across all 39 districts. About 1.5 million residential and commercial buildings have been assessed as at risk, and about 600,000 require urgent rebuilding. The government’s “Yarısı Bizden” program provides up to TRY 1.875 million per dwelling in grants, preferential loans and relocation support, running until 31 December 2026. TBDY 2018 (Turkish Building Earthquake Code) Chapter 6 specifically sets design requirements for non-structural building components, and exterior wall cladding has explicitly been required to consider chipping/falling risk under seismic action since the 2007 amendment. In this institutional environment, lightweight (about 4 kg/m²), thin-bed, non-structural-reinforcement-burden-adding finish systems have clear engineering compliance advantages in urban renewal scenarios.
Driver 2: BYKHY’s 28.50 m threshold has turned A2-s1,d0 into a hard cladding threshold for high-rise buildings. The logic of BYKHY Article 27(1) is clear height triggering: >28.50 m → A2-s1,d0; ≤28.50 m → at least B/C low-combustibility (B-s1,d0 to minimum A2,B,C-s3,d2 range). At the same time, the article also requires, where sprinklers are not provided, a fire-resistant solid surface of at least 100 cm height at each storey, or automatic sprinkler systems spaced no more than 2 m apart and no more than 1.5 m from the facade—a “storey barrier” requirement often overlooked in actual design. Flexible Stone’s existing A2-s1,d0 data directly corresponds in rating structure to BYKHY’s “limited-combustibility” determination, but an EN 13501-1 report and TSE-acceptable system documents must serve as the implementation basis.
Driver 3: The “triple climate attack” in coastal areas such as Antalya and inland freeze-thaw/large temperature differences are two completely different failure mechanisms. Antalya has over 3,000 hours of annual sunshine; coastal salt spray within 2–3 km of the coastline creates continuous chemical attack; summer facade surface temperatures can reach 50–60°C, dropping to 25–30°C at night, with diurnal temperature cycling causing continuous expansion and contraction; winter heavy rain expands microcracks, and high humidity accelerates biological colonization. Standard exterior wall coatings typically degrade within 3–4 years under these conditions, while elastic silicone systems can extend recoating cycles to 7–10 years. Inland and eastern high-altitude areas are dominated by freeze-thaw cycles and winter low temperatures. Flexible Stone’s UV and stain resistance data can serve as the technical dialogue basis for inland scenarios, but coastal projects must make salt spray data and anti-corrosion fastener selection preconditions of system design.
2. Our Turkey Market Solution Architecture
1. Compliance Pathway: 28.50 m Determines Rating, Seismic Code Determines Non-Structural Components, TSE Determines Access
| Compliance Level | Turkish Market Requirement | Current Basis and Gap | Recommended Action |
|---|---|---|---|
| Exterior wall cladding reaction to fire | BYKHY Article 27(1): building height >28.50 m → A2-s1,d0; ≤28.50 m → at least B/C low-combustibility (B-s1,d0 to A2,B,C-s3,d2) | Existing GB 8624 A2-s1,d0 corresponds to “limited-combustibility” in rating, but an EN 13501-1 report must serve as the basis for Turkish acceptance | Prepare technical documents targeting EN 13501-1 A2-s1,d0 reports; use A2 as the baseline for >28.50 m projects; offer the B-s1,d0 tier for ≤28.50 m projects to optimize cost |
| Storey fire barrier | Where sprinklers are not provided, a fire-resistant solid surface of at least 100 cm height must be provided at each storey; or automatic sprinkler systems spaced ≤2 m apart and ≤1.5 m from the facade | Flexible Stone as a finish layer can rely on the substrate/fire board for the solid surface, but system construction must coordinate with it | Clarify the implementation method of the storey barrier in system design (substrate extension, fire board, or sprinkler scheme), and submit the finish system and barrier nodes as a whole |
| Seismic-zone non-structural components | TBDY 2018 Chapter 6: non-structural building components (including exterior wall cladding) must be designed for seismic action, and cladding fall-off risk under shaking must be controlled | Flexible Stone’s lightweight (about 4 kg/m²) naturally reduces fall-off energy, but the fixing/bonding system must be verified for seismic action per TBDY 2018 | Complete non-structural component seismic action calculation per TBDY 2018 Chapter 6, and verify the fixing system (bond area, anchor spacing, edge restraint) against calculated loads; urban renewal projects must demonstrate non-obstruction of structural reinforcement nodes |
| TSE import inspection | Non-EU imported building materials must obtain a TSE inspection certificate for customs clearance; CE marking is one of the foundational documents for the TSE pathway | Existing CE covers indoor EN 15102 system 4 and does not automatically cover external walls | Based on EN 13501-1 reports and system fire documents, apply for TSE inspection certificate through the Turkish importer; simultaneously confirm the CE system-level assessment pathway for external wall scenarios |
| Energy efficiency and insulation coordination | TS 825 and energy efficiency regulations set limits on envelope U-values (residential >0.60 W/m²K, commercial >0.50 W/m²K penalized) | Flexible Stone does not provide thermal insulation, but as a finish layer must coordinate with the insulation system | Design in coordination with mineral wool/EPS insulation systems; submit finish + insulation as an energy efficiency package to avoid the finish system impairing thermal performance |
A judgment that must be made clear: The 28.50 m threshold in BYKHY Article 27(1) is the clearest and most rigid threshold for Turkish exterior wall cladding fire compliance. It and the 21.50 m high-rise definition are two independent concepts, and the most common on-site error is conflating the two. Flexible Stone’s A2-s1,d0 data is sufficient in the rating dimension to cover the mandatory requirement for >28.50 m, but Turkish plan review and TSE inspection accept EN 13501-1 reports and system-level fire documents, not direct translations of GB reports. TBDY 2018’s requirements for non-structural components are a second compliance line independent of fire performance, particularly critical in urban renewal projects.
2. Climate Adaptation: Coastal Salt Spray/UV Is the First Filter; Inland Freeze-Thaw/Large Temperature Difference Is the Second Variable
| Climate Region | Core Stress | Solution Focus | Citable Data and Actions |
|---|---|---|---|
| Mediterranean/Aegean coast (Antalya, Izmir, Muğla, etc.) | Annual UV exposure >3,000 h; salt spray within 2–3 km of the coastline creates continuous attack; summer facade surface 50–60°C / night 25–30°C diurnal temperature difference; winter heavy rain expands microcracks | Salt spray resistant finish, 316 stainless steel or equivalent anti-corrosion fasteners, UV-resistant formulation, system waterproofing joints | Supplement ASTM B117 / EN ISO 9227 salt spray data; specify fastener anti-corrosion grade; recommend supplementing UV data to ASTM G155 equivalent level, targeting ΔE ≤ 5; make salt spray tolerance a precondition of system design |
| Inland/eastern high-altitude (Ankara, Erzurum, Kars, etc.) | Winter freeze-thaw cycles, low-temperature exposure, large temperature difference fatigue; Ankara winter conditions differ fundamentally from the coast | Freeze-thaw resistant formulation, elastic bonding system, drainage detailing | -30°C flexibility and 100 freeze-thaw cycles data from high-flexibility emulsion technology can serve as a technical basis; high-altitude projects should supplement freeze-thaw verification as needed |
| Marmara/transitional zone (Istanbul, Bursa, etc.) | Moderate salt spray influence (areas closer to the sea), UV, superimposed earthquake risk | Comprehensive weather-resistant formulation, seismic-zone fixing system, storey barrier coordination | Istanbul urban renewal projects should use TBDY 2018 non-structural component compliance + BYKHY storey barrier + lightweight without added reinforcement burden as the core language |
3. Building Scenarios: Three Languages, Three Sets of Selection Logic
| Scenario | Core Client Concern | Flexible Stone Solution Language | Selection Recommendation |
|---|---|---|---|
| Earthquake-driven urban renewal/existing building reconstruction (Istanbul, Izmir, Bursa, etc.) | TBDY 2018 non-structural component compliance, lightweight without structural burden, non-obstruction of reinforcement nodes, BYKHY fire classification, shortened schedule | Lightweight (about 4 kg/m²) + thin-bed + TBDY 2018 fixing system verification + BYKHY A2/B class documents | Stone/brick-look textures, neutral tones; respond to urban renewal projects’ dual requirements on structural safety and approval with a combination of “lightweight + seismic-zone non-structural component compliance + fire rating matching”. About 10,000 buildings are rebuilt each year in Istanbul; this scenario is the core volume base |
| Coastal high-rise/commercial/hotel (>28.50 m) | BYKHY A2-s1,d0 mandatory compliance, salt spray durability, UV stability, storey barrier design | A2-s1,d0 EN 13501-1 documents + salt spray data + 316 stainless steel fasteners + storey barrier coordination | Large-format stone-look textures, light color palette; document package centred on A2-s1,d0 + storey barrier implementation scheme + salt spray/UV data |
| Inland/≤28.50 m mid-rise buildings and renovation | Cost optimization, B/C fire rating tier, freeze-thaw durability, construction convenience | B-s1,d0 or C-s3,d0 tier + freeze-thaw resistant formulation + fast construction | Stone-look textures; ≤28.50 m projects can offer lower rating tiers to optimize cost, but applicable conditions must be clearly defined |
4. Delivery Process: From Material Export to TSE Access and Local Compliance Responsibility Closure
- Determine the Turkish local importer and TSE pathway: Non-EU imported building materials must pass TSE inspection; confirm that the importer assumes responsibility for TSE application and customs clearance documents.
- Lock BYKHY rating determination and system construction: Use EN 13501-1 A2-s1,d0 reports to correspond to the “limited-combustibility” requirement for >28.50 m; system construction must cover the implementation method of the storey barrier and match the actual practice of the project to be tendered.
- Prepare technical documents by scenario: Urban renewal projects centred on TBDY 2018 non-structural component seismic action calculation; coastal projects supplemented with salt spray data and 316 stainless steel fastener selection; ≤28.50 m projects can provide B-s1,d0 tier documents.
- Material supply and batch traceability: Customize dimensions and textures according to layout drawings; provide batch traceability documents, EN 13501-1 reports and TSE-related documents with the goods.
- Local technical interface and acceptance support: Provide construction drawings and BYKHY rating basis to design firms, fire review authorities and general contractors; cooperate with TBDY 2018 non-structural component calculation sheets and on-site pull-off tests.
3. Citable Evidence List
The following data come from existing SGS test reports and product technical documents; the original reports and Turkish/EU supplementary test results shall prevail:
- Surface density: 3.96 kg/m² (GB/T 29059-2012); lightweight characteristics fit the core seismic-zone urban renewal requirement of “no added structural burden”
- Fire performance: A2-s1, d0 (GB 8624-2012; rating corresponds to BYKHY Article 27(1) “limited-combustibility” requirement for >28.50 m, but an EN 13501-1 report must serve as the basis for Turkish acceptance)
- Flexibility: no cracks when bent around a 200 mm diameter cylinder (JG/T 311-2011)
- 1,500 h artificial weathering: gray scale 4-5, color change grade 0, chalking grade 2, no cracking, blistering or peeling (can serve as a technical dialogue basis for coastal high-UV scenarios; recommend supplementing ASTM G155 equivalent data)
- Stain resistance: reflectance drop 12% (GB/T 9780-2013)
- Thermal conductivity: 0.171 W/(m·K); thermal resistance: 0.013 (m²·K)/W (Flexible Stone does not provide thermal insulation; thermal performance is achieved by the insulation system)
- Residual indentation: 0.17 mm
- Radionuclides: GB 6566-2010 Class A decorative and finishing material
- SDS: based on GB/T 17519/16483, classified as non-hazardous chemical
Additional note for the Turkish market: Surface density, flexibility and stain resistance data can be used for system design and client communication; the core of fire compliance is the correspondence between EN 13501-1 A2-s1,d0 reports and the BYKHY Article 27(1) 28.50 m height threshold, together with the system construction scheme for the storey barrier; TSE inspection certificate is a prerequisite for non-EU import customs clearance; seismic-zone projects must provide TBDY 2018 Chapter 6 non-structural component seismic action calculations; coastal projects must supplement salt spray data and specify 316 stainless steel fastener selection.
4. FAQ: Common Questions About the Turkish Flexible Stone Market
Q1: What is “soft ceramic” called in the Turkish market?
A: The Turkish market generally uses esnek taş (flexible stone) or esnek taş panel, and technical literature also uses MCM (Modified Clay Material / Modified Composite Material). Local brand Flexora Stone promotes products as “MCM Stone”, and Piks Stone uses “Flexible Stone” as the category name. We recommend using Flexible Stone / MCM / esnek taş as the category entry point.
Q2: What are the specific external wall cladding classifications under BYKHY Article 27?
A: Building height >28.50 m → A2-s1,d0 (“limited-combustibility”); ≤28.50 m → at least B/C low-combustibility (B-s1,d0 to minimum A2,B,C-s3,d2 range). 28.50 m is a threshold independent of the 21.50 m high-rise definition; the most common on-site error is conflating the two.
Q3: Can a GB 8624 A2-s1,d0 report be used directly for Turkish projects >28.50 m?
A: Not directly. Turkey accepts classification reports under the EN 13501-1 system. GB 8624 A2-s1,d0 corresponds to “limited-combustibility” in rating, but an EN 13501-1 report must serve as the basis for plan review and TSE inspection.
Q4: What are the requirements for the storey fire barrier?
A: BYKHY Article 27(1) requires, where sprinklers are not provided, a fire-resistant solid surface of at least 100 cm height at each storey to prevent flame spread from one storey’s window openings to the storey above. An alternative is automatic sprinkler systems spaced ≤2 m apart and ≤1.5 m from the facade. The finish system design must coordinate with this barrier requirement.
Q5: What additional requirements apply to Flexible Stone in seismic zones?
A: TBDY 2018 Chapter 6 specifically sets design requirements for non-structural building components (including exterior wall cladding), and cladding fall-off risk under shaking must be controlled. Flexible Stone’s lightweight (about 4 kg/m²) naturally reduces fall-off energy, but the fixing/bonding system must be verified for seismic action per TBDY 2018. About 10,000 buildings are demolished and rebuilt each year in Istanbul due to earthquake risk; this scenario is the core base of the Turkish market.
Q6: What are the TSE certification requirements for imported Flexible Stone?
A: Non-EU imported building materials must obtain a TSE inspection certificate for customs clearance. CE marking is one of the foundational documents for the TSE pathway, but existing CE covers indoor system 4; external wall scenarios require supplementary EN 13501-1 reports and system-level assessment. TSE certification average processing time is about 3–4 weeks.
Q7: What are the specific material requirements for coastal climates such as Antalya?
A: Antalya has annual UV exposure >3,000 hours, salt spray within 2–3 km of the coast creating continuous attack, summer facade surface 50–60°C / night 25–30°C diurnal temperature cycling, and winter heavy rain expanding microcracks. Salt spray test data must be supplemented, 316 stainless steel fastener selection specified, and UV data and thermal cycling resistance made core parameters of system design.
5. Conclusion: Priorities for the Turkish Market
- Establish BYKHY 28.50 m threshold and EN 13501-1 A2-s1,d0 first: This is the clearest compliance threshold for Turkish high-rise exterior wall cladding and the most direct application of Flexible Stone’s A2 positioning. Without EN 13501-1 reports and a storey barrier system scheme, products lack bidding qualification in >28.50 m projects.
- Use TBDY 2018 non-structural component compliance as the differentiation language for urban renewal: About 10,000 buildings are rebuilt each year in Istanbul, and the national urban renewal scale is in the hundreds of thousands. “Lightweight + seismic-zone non-structural component verification + non-obstruction of reinforcement nodes” is the core engineering language that distinguishes Flexible Stone from heavy stone and ceramic in this market, not just price or aesthetics.
- Complete TSE import access in parallel: Non-EU building materials must obtain a TSE inspection certificate for customs clearance, an independent threshold running in parallel with fire compliance. The certification cycle is about 3–4 weeks and should be scheduled in advance.
- Design by coastal/inland layering, with salt spray priority: The “triple attack” of UV/salt spray/diurnal temperature difference in coastal areas such as Antalya constitutes the first filter; inland freeze-thaw and large temperature differences are the second variable. The same product requires two sets of system design priorities.
- Build trust through local brand benchmarking and system documents: Turkey already has local MCM brands such as Flexora Stone and Piks Stone, and category awareness has formed. The competitiveness of Chinese products lies not in “category education” but in EN 13501-1 documents, TBDY 2018 calculation support, TSE access capability and consistency of system delivery. Complete compliance documents and urban renewal benchmark projects first, then roll out channels.
CTA
If you are evaluating Turkish earthquake-driven urban renewal, coastal high-rise or inland existing building renovation cladding solutions, please contact us to obtain:
- Turkey market compliance pathway checklist (BYKHY Article 27 / EN 13501-1 / TBDY 2018 / TSE)
- Flexible Stone system detailing and coastal salt spray/inland freeze-thaw layered adaptation recommendations
- Test report summary and TSE certification preparation roadmap
Guangdong Fortune Stone New Material Co., Ltd.
Flexible Stone / MCM System Solutions