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Use our free Wall Panelling Calculator to find exact panel counts, battens, adhesive, and fixings. Fast, simple steps for MDF, shaker, or wood panelling.
You want neat walls fast. You want to know how much panelling to buy. This article shows a clear path. It uses simple math. You’ll learn every formula. You’ll avoid waste and surprises. The tone stays plain and friendly. Sentences stay short and easy. You can use the formulas by hand. Or use your calculator app.
It finds wall area. It removes doors and windows. It counts full panels across the wall. It adds waste. It finds adhesive and fasteners. It computes battens if you need them. It works for MDF, wood, or shaker style. It works for vertical or horizontal fit. It uses common panel sizes. You can change any size.
Start with meters or feet. Convert to one unit. We use meters here. If you use feet, convert them first.
Wall area formula:
A_wall = W × H
Net area after openings:
A_net = A_wall − (doors × door_area) − window_area
Panels across the width:
panels_across = ceil(W ÷ panel_width)
Area of one panel:
area_one_panel = panel_width × panel_height
Total panel area installed:
total_panel_area = panels_across × area_one_panel
Panels to buy with waste:
panels_to_buy = ceil(panels_across × (1 + waste_percent))
Adhesive needed (kg):
adhesive_kg = ceil(A_net × adhesive_rate)
Panel fixings:
total_fixings = ceil(panels_to_buy × fixings_per_panel)
Stud fixing points:
rows_height = ceil(H ÷ stud_centres)
fixings_per_row = ceil(W ÷ stud_centres) + 1
total_stud_fix_points = rows_height × fixings_per_row
Battens (if used):
num_battens = ceil(W ÷ (batten_width + batten_spacing))
if end battens then add 1
total_batten_length = num_battens × H
batten_fixings = ceil(total_batten_length ÷ batten_fixing_rate)
Wall measures 5.00 m by 3.00 m. Panel size is 0.60 m by 2.40 m. Waste is 5%.
A_wall = 5.00 × 3.00 = 15.00 m².
Door area = 1 door × 2.00 m² = 2.00 m².
A_net = 15.00 − 2.00 = 13.00 m².
panels_across = ceil(5.00 ÷ 0.60) = ceil(8.33) = 9 panels.
area_one_panel = 0.60 × 2.40 = 1.44 m².
total_panel_area = 9 × 1.44 = 12.96 m².
panels_to_buy = ceil(9 × 1.05) = ceil(9.45) = 10 panels.
adhesive_kg = ceil(13.00 × 1.5) = ceil(19.5) = 20 kg.
If fixings = 8 per panel then total_fixings = 10 × 8 = 80.
This gives you a simple shopping list. It keeps waste low.
Measure your wall in full. Note width and height in the same unit. Measure doors and windows. Pick panel size and orientation. Choose a waste percent. Use 5% for straight walls. Use 8–12% for many cuts or patterns. Enter stud spacing if you need studs count. Enter adhesive rate from the product data. Use the formulas above. Round up any count of items. Buy whole packs, not single screws.
Pick panel orientation before you buy. Vertical panels hide short walls well. Horizontal panels make a room feel wide. Match grain or pattern to avoid visible joins. Add extra panels for mistakes. Round up adhesive to nearest pack. Check panel thickness and weight for extra fixings. For heavy cladding, use mechanical fixings.
This math keeps things simple. You’ll waste less and spend less. The formulas let you plan fast. They work for MDF, shaker, wood, or moulding. Use real product specs for exact purchases. If you want, test values in a small live wall first. That helps you avoid big errors.
Pick a panel width that divides the wall cleanly. If a panel leaves a thin strip at the end, pick a different width. You can shift spacing to balance cuts.
Divide wall width by number of modules. Use spacing = (W − (num_panels × panel_width)) ÷ (num_panels + 1) for even edge gaps. Adjust so cuts stay practical.
Common widths run 100 mm to 600 mm. Narrow boards suit classic looks. Wide panels suit modern rooms. Match scale to room size.
Subtract their area from wall area before adhesive and coverage math. If you plan to run paneling around openings, plan extra panels for edging and trim.
Costs vary by material and region. MDF stays cheaper. Real wood costs more. Add fixings, adhesive, and trim. Get local prices to compute a final cost.
Yes. Use panel height equal to the wainscot height. Set panel height to the trim height.
You can glue MDF directly. Battens help with air gaps and fixings. They also allow backing for heavy panels.