Waterproofing Calculator
Estimate surface area, system consumption, pack quantities and an indicative installed cost for roofs, balconies, walls and wet areas.
Area · litres or kilograms · packs · costOpen calculator →Free tools for South African property projects
Practical, no-signup tools to estimate quantities before you quote, budget or buy. Built for South African homeowners, property managers and contractors.
Choose a calculator ↓Estimate surface area, system consumption, pack quantities and an indicative installed cost for roofs, balconies, walls and wet areas.
Area · litres or kilograms · packs · costOpen calculator →Calculate wall, ceiling, roof or timber area, then estimate paint, primer and practical South African tin sizes.
Area · coats · litres · tins · costOpen calculator →Turn a building footprint, overhang and pitch into true roof area, slope length, tiles, sheets, ridge and gutters.
Pitch · true area · tiles · sheetsOpen calculator →Estimate floor or wall tiles, full boxes, cutting waste, adhesive, grout and a practical project budget.
Tiles · boxes · adhesive · grout · costOpen calculator →Follow the location, timing and visible symptoms to compare roof leaks, penetrating damp, rising damp, condensation, plumbing and failed wet-area waterproofing.
Symptoms · likely causes · urgency · next stepOpen calculator →Calculate cubic metres for slabs, footings and round columns, then estimate ready-mix, premix bags or site-mix materials.
Volume · m³ · bags · sand · stone · costOpen calculator →Estimate standard bricks, maxi bricks or blocks with openings, wall leaves, cutting waste, cement and building sand.
Wall area · units · mortar · cement · sandOpen calculator →Turn floor or wall area and finished thickness into mortar volume, cement bags, building sand and an indicative material cost.
Area · thickness · volume · cement · sandOpen calculator →Reliable estimates
Every calculator explains what is included, lets you adjust practical allowances, and rounds purchasing quantities where products are sold in full tins, packs or boxes.
These are planning estimates—not hidden quotations. Product data sheets, site conditions and a professional assessment must guide the final specification.
Use drawings or safe on-site dimensions and divide irregular areas into simple sections.
Choose the surface, material, condition, coats, pitch or waste allowance that matches the job.
Get material quantities and an indicative budget with the important assumptions visible.
Check the selected manufacturer’s coverage and arrange an assessment for complex work.