Overview
Wedge MXPS is the interior grade of the CSC XPS board family. A polymer-modified cement mortar is applied over an alkali-resistant fibreglass mesh on both faces of a Wedge CCXP extruded polystyrene core and factory-cured, so the facing cannot delaminate in service and the panel is equally rigid in both directions.
The polymer cement facing gives a rough, cement-like key that bonds to any cementitious tile adhesive to EN 12004, while the closed-cell core keeps water out of the wall or floor build-up. It is the right choice for bathrooms, showers, kitchens, spas and pool surrounds where the board is fully covered by tiles and a lower-cost facing than calcium silicate cement is acceptable.
Where the board will be left partly exposed, carry heavy floor loads or be used on roofs, façades or prefab panels, specify the calcium silicate cement coated grade (CSC XPS 250) instead.
Download the CSC XPS Boards catalogue (PDF)
Full 2026 technical catalogue — five-layer construction, declared values, CCXP core grade selector, floor, roof and wall build-ups, sizes, packing, installation guide and export data. 13 pages, 7 MB.
Polymer Cement Coated XPS Board specifications
Typical production values for the MXPS polymer mortar coated grade. Values are determined by the test methods listed and are not a specification — request a Material Test Certificate for the batch supplied where a value must be guaranteed.
| Property | Value | Test standard / note |
|---|---|---|
| Core material | Closed-cell extruded polystyrene (Wedge CCXPS), CFC and HCFC free | ASTM C578 / EN 13164 |
| Facing | Polymer-modified cement mortar over alkali-resistant fibreglass mesh, both faces | — |
| Core density | 30–45 kg/m³ (CCXP 30, 35, 36, 45, 60) | ASTM D1622 |
| Thermal conductivity, λ | 0.030–0.035 W/m·K | EN 12667 / ASTM C518 |
| Compressive strength at 10 % deformation | 200–300 kPa (up to 600 kPa on CCXP 60 core) | ASTM D1621 |
| Surface strength of coating | ≥ 1 MPa | — |
| Water absorption, long term (volumetric) | ≤ 0.7 % | ASTM C578 / EN 12087 |
| Adhesive compatibility | Cementitious tile adhesives class C2 | EN 12004 |
| Flexural strength, core | 345–525 kPa by grade | ASTM C203 |
| Limiting oxygen index, core | 24 % | ASTM D2863 |
| Dimensional stability, core | 1–2 % | ASTM D2126 |
| Service temperature | −30 °C to +80 °C | — |
| Thickness | 6, 10, 12, 20, 25, 30, 50 mm | ±1.0 mm (≤30 mm); ±1.5 mm (>30 mm) |
| Width × length | 600 or 1220 mm × 1200 or 2440 mm | ±3 mm |
| Squareness and flatness | ≤ 3 mm per 1000 mm | — |
| Compliance | ASTM C578 · EN 13164 · EN 12004 | — |
XPS core grade selector
The core grade sets the compressive strength of the finished board; choose it from the load the floor, roof or wall will carry.
| Property | Value | Test standard / note |
|---|---|---|
| CCXP 30 — 30 kg/m³, 200 kPa | Wall tile backer, partitions | — |
| CCXP 35 — 35 kg/m³, 300 kPa | Wall and floor tile backer | — |
| CCXP 36 — 37 kg/m³, 350 kPa | Floor tile backer, underfloor heating | — |
| CCXP 45 — 40 kg/m³, 450 kPa | Floors under screed, pool and spa substrates | — |
Polymer Cement Coated XPS Board price
MXPS polymer cement coated XPS board is the economical grade of the range and is priced per board by thickness and core grade. Pricing is on application — send the wall or floor area and thickness for a firm quotation in ₹ INR and $ USD, delivered to site or ex-works Faridabad.
Minimum order is one pallet within India and one 20′ GP container for export (indicatively 2,600 m² at 10 mm, 1,300 m² at 20 mm, 520 m² at 50 mm). Mixed-thickness and mixed-grade containers are accepted.
Applications
- Bathroom, shower and wet-room walls — waterproof tile substrate on masonry or studs (6, 10, 12 mm).
- Kitchen backsplashes, counters and vanity units (6, 10 mm).
- Floor tile backer over concrete or screed where the board is fully tiled (6, 10, 20 mm, CCXP 36–45).
- Pool, spa and sauna cladding substrate — unaffected by continuous humidity (10, 12, 20 mm).
- Bathroom pods, prefab washrooms and hotel refurbishment programmes where weight and speed matter.
- Lining behind decorative wall finishes in humid interiors — the very low vapour permeability of the core protects the wall.
Typical build-up — tiled shower wall on masonry
| Property | Value | Test standard / note |
|---|---|---|
| 1. Wall tile + epoxy or polymer grout | Sealant at corners and tray | No separate tanking membrane |
| 2. Flexible C2 S1 cement adhesive | Applied direct to the polymer cement facing | EN 12004 |
| 3. Wedge MXPS board, 6–12 mm | Joints taped and sealed | Waterproof, insulated tile substrate |
| 4. Adhesive dabs + 5 anchors/m² | Full bed where the wall is flat to 3 mm in 2 m | — |
| 5. Masonry or plastered wall | Sound, dry, primed if porous | — |
Installation
- Substrate must be sound, clean, dry and flat to 3 mm in 2 m; prime porous substrates.
- Score both faces with a trimming knife against a straight edge and snap — no power tools or dust extraction needed.
- Bed the board in flexible C2 cementitious tile adhesive applied with a 6–8 mm notched trowel, or fix to studs with corrosion-resistant screws and 35 mm washers at 300 mm centres.
- Tape every joint with 100 mm alkali-resistant mesh tape bedded in adhesive; seal internal corners, perimeters and penetrations with flexible sealant.
- Tile directly onto the facing with the same C2 adhesive; use epoxy or cement-polymer grout in wet areas.
- Do not use solvent-based adhesives or primers on the core; seal exposed cut edges in wet areas; do not expose the board to temperatures above 80 °C.
Sizes, thickness and packing
Standard boards: 1200 × 600 mm and 2440 × 1220 mm in 6, 10, 12, 20, 25, 30 and 50 mm; nominal weight 1.5 kg/m² at 6 mm rising to 12.5 kg/m² at 50 mm. Cut-to-size on request.
Product code: MX-35-10-2440 = polymer mortar facing, CCXP 35 core, 10 mm, 2440 mm length. Boards are stacked flat on fumigated (ISPM 15) pallets, corner-protected and stretch-wrapped; store flat, dry and out of direct sunlight, pallets no more than two high.
Why buy from Wedge Industries Limited
- Manufactured in Faridabad, India, with group sourcing from the United Kingdom, Spain and China; exported to 45+ countries across the Gulf, Europe, South and South East Asia, Africa and North America.
- Every figure published here is a tested value to the standard stated, not an estimate. A Material Test Certificate (MTC) is issued per batch on request, and a TDS, MSDS and Application Guide are available for every grade.
- Standard formats ship from stock; project quantities and cut-to-size boards are produced to order with a typical lead time of three to four weeks ex-works.
- Minimum order: one pallet for domestic supply; one 20′ GP container for export (indicatively 1,300 m² at 20 mm or 520 m² at 50 mm). Mixed-thickness containers accepted.
- Incoterms offered: EXW, FOB, CIF and DAP. HS code 3921.11 (indicative). Export documentation and compliance support through group company ZJELL Limited.
- Ancillaries supplied with the boards: 100 mm alkali-resistant joint tape, corrosion-resistant screws and 35 mm washers, masonry anchors, flexible C2 S1 tile adhesive, polymer-modified base-coat render and sealant.
Frequently asked questions
What is a polymer cement coated XPS board?
It is an extruded polystyrene (XPS) foam board with a polymer-modified cement mortar facing bonded over fibreglass mesh on both sides. The XPS core insulates and keeps water out; the cement facing gives a rigid surface that tile adhesive bonds to directly. Wedge sells this grade as MXPS.
What is the difference between MXPS and CSC XPS 250?
Both are made on the same Wedge CCXP core. MXPS has a polymer-mortar facing and is the economical interior tile backer. CSC XPS 250 has a calcium silicate cement facing and is the premium fire-retardant grade for roofs, external walls, prefab panels, cold stores and heavy-duty floors.
Can polymer cement coated XPS board be used on floors?
Yes, as a tile backer over concrete or screed where the board is fully tiled. Specify a CCXP 36 or CCXP 45 core (350 to 450 kPa) for floors and bed the board in a full adhesive bed. For point loads above 300 kPa or for roofs, use CSC XPS 250 on a CCXP 60 or 70 core.
Is MXPS board waterproof?
The closed-cell XPS core absorbs 0.7 % or less water by volume in long-term immersion and the polymer cement facing resists moisture. With joints taped and perimeters sealed the board acts as the waterproof layer behind tiles in showers, kitchens and wet rooms.
What thicknesses and sizes are available?
MXPS is supplied from 6 to 50 mm thick in 600 or 1220 mm widths and 1200 or 2440 mm lengths, with cut-to-size boards available to order. Thickness tolerance is ±1.0 mm up to 30 mm and ±1.5 mm above.
What is the minimum order and lead time?
One pallet for supply within India; one 20-foot container for export with mixed thicknesses accepted. Standard formats ship from stock and project or cut-to-size quantities take three to four weeks ex-works.
Need the full data sheet set? Download the CSC XPS Boards catalogue (PDF) or request the TDS, MSDS and Application Guide with your enquiry.
Related products
- Tile Backer Board — waterproof XPS
- Calcium Silicate XPS Sandwich Panel (CSC XPS 250)
- Cement XPS Sandwich Panel — floors, walls and prefab
- XPS Roof Insulation Board — cement coated
- Calcium Silicate Boards
- All insulation products
Request a quotation for Polymer Cement Coated XPS Board
Send the floor, roof or wall area, required thickness or U-value, load case and delivery location. Wedge Industries Limited returns a grade and thickness recommendation, a board and ancillary schedule and a firm price in INR and USD.
