Estimates, Worked Examples and Checklists

Read a roofing or façade quotation line by line, work through estimates with the arithmetic shown, and use checklists for contracts, payments and warranties.

This section is about turning a site visit into numbers you can check. The worked examples measure a terrace and a sloping metal roof, add parapets, upturns and wastage, apply illustrative rates and GST, and show how the total changes when the old layer has to be broken out or a new steel structure is needed. One guide splits a façade repainting bill across the flats of an apartment building, and another helps you decide whether to repair or replace.

All figures are illustrative and chosen so the arithmetic is easy to follow. Replace them with the area and rates in your own quotation. The tools help: the roof and façade cost estimator, the retention and payment calculator, the repair loan EMI calculator and the contract and warranty checklist.

Start with how to read a roofing or façade quotation, which lists the line items to ask for so that two contractors can be compared on the same basis.

Estimates, Worked Examples and Checklists

Guides in this topic