Rhino Board Ceiling Calculator

Rhino Board Ceiling Calculator

Material Estimates

Total Ceiling Area: 0 m²

Rhino Boards Required: 0

Drywall Screws (approx): 0

Joint Compound (kg): 0 kg

Brandering Wood (linear m): 0 m

Fiber Tape Required: 0 m

function calculateCeiling() { var length = parseFloat(document.getElementById('roomLength').value); var width = parseFloat(document.getElementById('roomWidth').value); var boardArea = parseFloat(document.getElementById('boardSize').value); var waste = parseFloat(document.getElementById('wasteFactor').value) / 100; if (isNaN(length) || isNaN(width) || length <= 0 || width <= 0) { alert('Please enter valid room dimensions.'); return; } var netArea = length * width; var grossArea = netArea * (1 + waste); var boardsNeeded = Math.ceil(grossArea / boardArea); // Estimates based on standard installation ratios var screws = Math.ceil(netArea * 20); // Average 20 screws per m2 var compound = (netArea * 1.8).toFixed(1); // Approx 1.8kg per m2 for skimming/joints var brandering = (netArea * 1.6).toFixed(1); // Standard 600mm spacing brandering var tape = (netArea * 2.5).toFixed(1); // Joints plus corners document.getElementById('resArea').innerText = netArea.toFixed(2); document.getElementById('resBoards').innerText = boardsNeeded; document.getElementById('resScrews').innerText = screws; document.getElementById('resCompound').innerText = compound; document.getElementById('resBrandering').innerText = brandering; document.getElementById('resTape').innerText = tape; document.getElementById('ceilingResult').style.display = 'block'; }

How to Use the Rhino Board Ceiling Calculator

Planning a renovation or a new build requires precision, especially when working with specialized materials like Rhino Board. This calculator is designed to provide professional-grade estimates for your gypsum ceiling project, including board counts, fasteners, and finishing compounds.

Understanding Rhino Board Sizes

Rhino Board is the industry standard for high-quality gypsum plasterboard. It typically comes in a standard width of 1200mm, but lengths vary to suit different room spans and minimize joints:

• 2400mm x 1200mm (2.88m²): Ideal for smaller residential rooms and easy handling.
• 3000mm x 1200mm (3.60m²): A medium length that reduces joints in standard living areas.
• 3600mm x 1200mm (4.32m²): Best for large open-plan spaces to ensure a seamless finish.

The Importance of Waste Factor

In ceiling installation, you rarely use every square inch of every board. Cutting around corners, light fixtures, and fitting the layout to your brandering (the wooden support framework) creates off-cuts. A 10% waste factor is standard for rectangular rooms, while complex or L-shaped rooms may require 15% to 20%.

Calculating Accessory Materials

The calculator doesn't just stop at the boards. To achieve a professional finish, you need the supporting components:

1. Brandering: These are the timber or steel batten supports spaced usually at 400mm or 600mm centers. The calculator estimates the linear meters needed based on standard spacing.
2. Drywall Screws: You should use 25mm or 32mm drywall screws. We estimate roughly 20 screws per square meter to ensure the board is securely fastened without sagging.
3. Joint Compound & Skim: For a "Flush Plastered" look, Rhino Board joints must be taped and the entire surface usually receives a 2-3mm skim coat of gypsum plaster.

Example Calculation

If you have a room that is 6 meters long and 4 meters wide (Total Area = 24m²):

• Using 3.0m boards (3.6m² per board), you would need 7.33 boards.
• Adding 10% waste brings the total to 8.06 boards.
• You would purchase 9 boards to be safe.
• You would also need approximately 480 screws and 43kg of jointing/skimming compound.

Pro Installation Tips

Always install Rhino Board with the ivory side facing down (the side intended for plastering). Ensure your brandering is level before fixing the boards. When screwing, the screw head should sit slightly below the surface of the paper but should not break the paper—this "dimple" allows the compound to hide the screw head perfectly.