EWEXPERTWORXExpert assessment

Free tools for South African property projects

Home maintenance
calculators.

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
01Free calculator

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
02Free calculator

Paint & Roof Coating Calculator

Calculate wall, ceiling, roof or timber area, then estimate paint, primer and practical South African tin sizes.

Area · coats · litres · tins · costOpen calculator
03Free calculator

Roof Area & Pitch 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
04Free calculator

Tile Quantity & Cost Calculator

Estimate floor or wall tiles, full boxes, cutting waste, adhesive, grout and a practical project budget.

Tiles · boxes · adhesive · grout · costOpen calculator
05Free calculator

Damp & Roof-Leak Diagnosis Tool

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
06Free calculator

Concrete Volume & Bags 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
07Free calculator

Brick, Block & Mortar 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
08Free calculator

Screed & Plaster 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

Useful numbers, with the assumptions shown.

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.

01

Measure

Use drawings or safe on-site dimensions and divide irregular areas into simple sections.

02

Adjust

Choose the surface, material, condition, coats, pitch or waste allowance that matches the job.

03

Calculate

Get material quantities and an indicative budget with the important assumptions visible.

04

Confirm

Check the selected manufacturer’s coverage and arrange an assessment for complex work.

When the cause matters

A calculator estimates. ExpertWorx diagnoses.

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