Renovation tools
Practical renovation calculators and guides
Calculate material quantities, plan allowances and find clear guidance for common renovation tasks and problems.
Popular calculators
All calculatorsFloor area calculator
Adds up to three rectangular sections and shows the area of each section separately.
Wall area calculator
Calculates the area of all four walls and subtracts the area of door and window openings.
Laminate flooring calculator
Turns floor area into the number of laminate flooring packs and shows the allowance separately.
Tile quantity calculator
Calculates the number of whole tiles from the surface area, tile size and cutting allowance.
Paint coverage calculator
Estimates the litres of paint needed from the stated coverage and number of coats.
Plaster mix calculator
Turns the area and average plaster thickness into an estimated material weight and number of bags.
Browse by topic
All topicsWalls and finishes
Walls
Wall measurements, substrate checks and practical preparation for renovation finishes.
Painting
Paint quantity, coats, preparation and practical troubleshooting for painted surfaces.
Plaster
Practical guidance on plaster thickness, drying, cracks, adhesion and methods for controlling wall flatness.
Wall filler
Base and finishing filler, drying, sanding and practical checks before painting or wallpapering.
Wallpaper
Wallpaper quantity, pattern repeat, adhesive choice and practical solutions for bubbles, seams and loose strips.
Floors and subfloors
Floors
Materials, calculations and practical guidance for floor renovation.
Laminate flooring
Calculate laminate packs and learn how to diagnose common installation problems.
Floor screed
Floor screed thickness, drying, material estimates and practical checks before installing a floor covering.
Self-leveling compound
Self-leveling compound volume and dry-mix estimates from floor area, layer thickness and product coverage.
Floor area
Quick floor-area calculations for one room or several rectangular sections.
Tiles and grout
Tiles and grout
Tile calculations and practical guidance on substrates, adhesive, grout and installation problems.
Tile adhesive
Tile adhesive estimates based on tiled area, product coverage, layers, allowance and bag weight.
Tile grout
Practical grout estimates using tile dimensions, joint width, thickness, density, area and allowance.
Masonry and concrete
Bricks
Brickwork quantity estimates using wall dimensions, masonry thickness, mortar joints, openings and allowance.
Aerated concrete blocks
Wall masonry estimates for aerated concrete blocks, including openings, joints, wall thickness and allowance.
Concrete
Geometric volume planning for slabs, strips and other rectangular concrete elements.
Insulation and fitting
Insulation
Insulation board and pack estimates for walls, floors and ceiling structures using the selected layer data.
Drywall
Drywall sheet estimates for walls and ceilings with multiple surfaces, layers, openings and allowance.
Primer
Choosing primer, preparing different substrates and checking when a primed surface is ready for the next finish.
Useful guides
All guidesCan You Paint or Wallpaper Fresh Plaster?
Fresh plaster should not be covered until it has reached the condition required by the plaster and finish manufacturers. A surface that feels dry may still hold moisture inside.
Gypsum Plaster or Cement Plaster: Which Fits the Job?
Gypsum and cement plaster are chosen for different conditions. The right option depends on moisture exposure, substrate, layer requirements and the next finish—not a universal ranking.
Why Laminate Flooring Creaks
Creaking usually means that planks or locking joints are moving under load. Locate the sound and inspect the subfloor, underlayment and perimeter before trying a quick fix.
Why Laminate Flooring Needs Expansion Gaps
A floating laminate floor needs room for small dimensional changes. Leave the perimeter and other fixed details according to the flooring manufacturer’s guidance.
Why Laminate Flooring Joints Separate
Separating joints mean that the locking system is being moved or was not assembled correctly. Check the planks, subfloor, perimeter and moisture before forcing a repair.
Moisture-Resistant vs Water-Resistant Laminate Flooring
Moisture resistance may mean better tolerance of short spills, while water resistance depends on the specific construction and exposure limits. Neither label means unlimited waterproofing.