Moisture Resistant MDF Sheet – 3050×1525 mm (10×5′) – 12 mm
€85.50
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Including additional 5% for wastage.
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Pros and cons
MDF.H (Option 1) per EN 622-5; classified MDF.HLS for high-density humid-conditions use
Durability Class D3 bond rating; suits kitchens, bathrooms and humid interior areas
Green-dyed core for easy identification on site and in spec inspections
E1 low-formaldehyde; also meets CARB Phase 2 and EPA TSCA Title VI
For interior humid-conditions use; not rated for full external weather exposure
Edges absorb finish faster than the face; seal cuts and use an MDF primer before painting
Product specification
- Length
- 3050 mm
- Width
- 1525 mm
- Thickness
- 12 mm
- Coverage
- 4.65 m²
- Weight
- 53.0 kg
- Material
- Timber
- Wood Type
- Softwood
Moisture Resistant MDF Sheet
Moisture Resistant MDF is the panel for kitchen and bathroom joinery, window boards, skirting and architectural mouldings in any room where humidity comes and goes. You get all the workability of Standard MDF, the same flat sanded face that paints cleanly, with a binder system rated to hold up in humid conditions. At 12 mm, we stock the workhorse kitchen and bathroom carcass thickness in our yard in Dublin, ready for fast delivery anywhere in Ireland.
Why Moisture Resistant MDF?
MR MDF is a moisture resistant MDF panel designed for use in humid conditions in accordance with MDF.H (Option 1) as defined in EN 622-5. In plain terms: it’s a panel manufactured to the European standard for MDF used in humid-conditions interior applications, with the binder chemistry adjusted to resist the swelling that finishes off Standard MDF in a steamy kitchen or bathroom. It’s classified as MDF.HLS, the high-density humid-conditions grade, which is what gives you the screw-hold and the machined-edge quality you need in cabinet work.
The panel is coloured green in the mass for easy identification, so there’s no second-guessing on site or in a spec inspection whether the right panel went into the wet area. It carries the E1 low-formaldehyde classification, the European limit for panels used inside homes, schools and offices, and meets the requirements of the California Air Resource Board (CARB Phase 2) and the EPA’s Toxic Substances Control Act (TSCA Title VI), the two strictest formaldehyde standards in the world. It’s also rated Durability Class D3, which means the bond is rated for interior use with frequent short-term exposure to water and condensation, exactly the conditions a kitchen or bathroom carcass actually lives in.
You’ll see it across kitchen and bathroom carcasses, vanity units, window boards, skirting and architrave, architectural mouldings, utility cupboards, and any interior cabinetry where humidity is part of the working environment.
Working with the sheet
At 15 mm, this is the workhorse kitchen and bathroom carcass thickness: rigid enough for full cabinet builds, light enough to handle solo. Use a sharp TCT blade with 60 or more teeth for clean cross-cuts, and always pre-drill before screwing close to an edge. Pocket-hole or biscuit-joined butt joints work well; for cabinet work, glue-and-screw with confirmat-style screws gives you the strongest hold.
MDF dust is fine and should be cut with extraction or outdoors. Wear a P2 or P3 mask. Although the panel is rated for humid conditions, sealing all cut edges before installation gets you the longest service life, because cuts expose the core where it’s most absorbent. Keep sheets flat and dry until installation.
Finishing
MR MDF takes finish as cleanly as Standard MDF. Most of our customers prime the face with a dedicated MDF primer before topcoating, because the edges absorb finish faster than the face and will drink ordinary paint unevenly. Two coats of MDF primer, sanded between, then any topcoat in the sheen you want; for wet areas, use a kitchen and bathroom or moisture-tolerant topcoat to match the panel’s resilience. Avoid water-based paints applied directly without primer, since the moisture lifts the fibres. Ask us if you’re unsure which finish to pair with your application, and we’ll point you to what works.