Roundtower Board Render

€25.85 INC VAT

€21.02 EXC VAT

Roundtower Board Render is a dry, ready-mixed Natural Hydraulic Lime (NHL) render designed as a high-performance backing coat & base coat for bonding and plastering insulation boards. With enhanced workability and consistent performance, this render is ideal for heritage and...

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Roundtower Board Render is a dry, ready-mixed Natural Hydraulic Lime (NHL) render designed as a high-performance backing coat & base coat for bonding and plastering insulation boards. With enhanced workability and consistent performance, this render is ideal for heritage and eco-build projects that require a breathable, vapour-open solution.

Blended from:

100% pure NHL 3.5
Graded kiln-dried sands
Carefully selected conservation-grade additives

This render provides:

Excellent adhesion to insulation boards prior to mechanical fixing as well as a base coat onto wood fibre boards.
Improved workability and extended open time.
Reduced shrinkage risk.
Reliable performance across a variety of solid wall backgrounds

✔️ Purpose: Backing render for board adhesion before mechanical fixing & base coat onto wood fibre boards.
✔️ Binder Strength: NHL 3.5
✔️ Yield: 14.5 litres of mortar per 25kg bag
✔️ Colour: Natural tan (no pigments added; not a finish coat)
✔️ Application Method: Apply with a notched trowel to the full back of the board
✔️ Part of the Roundtower Performance Range: Precision-engineered for compatibility with breathable build-ups

This lime-based board render is ideal for internal or external applications where breathable insulation boards (e.g., wood fibre) are used. It ensures effective load transfer, board alignment, and moisture-safe build-up in both traditional and modern breathable wall systems.

Deliveries within Ireland take between 2-5 working days after an order has been placed.

Our stock is shipped by Fastway, DPD or The Pallet Network depending on location and quantites. If your order contains a mix of products they will be dispatched altogether. The delivery will be determined by the product with the longest delivery time.

If for any reason we are out of stock of any item that you have ordered we will contact you to advise you of an anticipated delivery date, give you the option of any alternative product or the option to cancel the order, and receive a full refund.

Special orders, paints, plasters, NHL's and insulation products are non-refundable.

Deliveries carried out by TPN (The Pallet Network) are completed with 20 Ton Rigid Trucks that have a tail lift and a pallet truck. Open access will be required to facilitate the truck.

We always endeavour to take into consideration everyone's delivery needs.
Please ensure your delivery location has;
• Level area with no sharp inclines/declines.
• No Grass/Gravelled areas as pallets cannot be moved.
• Open access for Curtain sided Lorries.
• Whilst our drivers are instructed not to take their vehicle off the roadway to
make deliveries, our driver will make every effort with your delivery to meet your requirements.
• If you require the driver to leave the roadway, it will be at your own risk.
• Where a pathway is cemented / tarmacadam our drivers will do their best to bring a pallet to customers preferred drop on their premises.
• If it is gravel and not practical for a pallet truck to run on it, the driver is obligated to drop the pallet at nearest kerb side.
• The drivers are not obligated to place the pallets into stores, garages and a warehouses.

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