Plastering Materials

Plastering materials form the foundation of smooth, durable wall and ceiling finishes across residential, commercial, and renovation projects. From traditional sand and cement renders to modern lightweight finishing compounds, the right products ensure professional results that stand the test of time, whether you're skimming a new build or restoring period features.

Our Plastering Products Range

McMahons stocks a comprehensive selection of plasters, renders, and finishing products from trusted manufacturers to suit every application.

• Beads & Metal Studding - our largest plastering subcategory with 53 products, covering galvanised angle beads, stop beads, thin coat beads, mini mesh reinforcement, PVC screed expansion strips, and metal studding components from Eurometals and other trusted manufacturers. Essential for achieving clean, crisp plaster edges and reinforced joints throughout an installation.
• Plasterboard - a comprehensive range of 27 Knauf plasterboard products in standard, foil-backed, and moisture-resistant (green board) types, available in multiple sheet sizes and thicknesses (9.5mm, 12.5mm, 15mm) to suit dry lining, dot-and-dab, and stud partition applications.
• Jointing Compounds - 15 products covering Knauf ready-mixed and powder-based jointing and finishing compounds, including Fill & Finish Light and Fill & Finish 30 Premium, for filling and taping plasterboard joints, skimming, and surface preparation prior to decoration.
• Plastering Tapes & Adhesives - 12 products including jointing tapes, corner flex tape, and plasterboard adhesives such as Knauf Bonding Compound for dot-and-dab direct bonding applications and Knauf Betokontakt primer for improving adhesion on difficult substrates.
• Ready Mixed & Bagged Plaster - 7 products covering finish coat plasters from Gyproc and British Gypsum, including Gyproc Skimcoat and Gypsum Carlite Finish (both 25kg), for achieving a smooth final coat on plasterboard, cement undercoat, and existing plaster surfaces prior to painting.
• Coving - Gyproc 127mm Cove Cornice in 3m lengths, providing a clean, traditional ceiling-to-wall transition in gypsum plaster for internal residential and commercial applications.
• Plastering Accessories - a small selection of supporting plastering tools and accessories to complement the products across our plastering range.

For structural work requiring cement, sand, or aggregate products, browse our full Building Materials range alongside complementary Adhesives & Sealants for tile-backing and drywall applications.

Selecting the appropriate product depends on your substrate type, interior or exterior application, and desired finish. Low-suction backgrounds like concrete typically require bonding coats, while porous blocks may need browning plaster. For external work, check render specifications against exposure conditions and building regulations.

Why Choose McMahons for Your Plastering Supplies?

With over 190 years serving Ireland's building trade, McMahons understands the importance of consistent quality and reliable supply for plastering contractors. Our branches carry stock from leading brands, and our knowledgeable counter staff can advise on product compatibility, coverage rates, and suitable primers for challenging substrates. Ready to discuss your project requirements? Get in touch with our team for expert guidance on quantities and specifications.

Frequently Asked Questions

1. What type of plaster should I use for skimming walls?

Finishing plaster is ideal for skimming and creating a smooth, even surface ready for painting or decorating.

2. What is bonding plaster used for?

Bonding plaster is designed for use on low-suction backgrounds such as concrete, plasterboard, or painted surfaces, providing a good base before applying finishing plaster.

3. How long does plaster take to dry?

Drying times vary by product, thickness, and room temperature. Most plasters dry within 24–48 hours, but full curing may take several days.

4. Do I need PVA before plastering?

PVA or a suitable bonding agent is often applied to improve adhesion on smooth or dusty surfaces. Always follow product recommendations.

5. Can plaster be used on exterior walls?

Standard interior plaster is not suitable for outdoor use. For external applications, use render or specialist exterior products.

6. What tools do I need for plastering?

Essential tools include a plastering trowel, hawk, mixing bucket, float, corner bead, and joint tape.