Replacing the roof on a commercial building is a costly maintenance expense for a business. With the right planning, this cost can be absorbed without a major disruption to the business, and may even bring long term savings.

Start with a Proper Survey

A survey provides the detail needed to prepare an accurate budget. Without a survey the figures quoted are little more than a wild guess. An accurate survey will tell you the condition of the existing roof covering, if there is any moisture in the insulation and the condition of the roof deck. This information enables an accurate assessment of what work is required.

Understand What Drives the Cost

The most important factors are the size of the roof, the selected system, access and the existing roof covering. Some systems allow the existing covering to be left in-place. The lifespan, cost and other considerations of single-ply membranes, built-up felt, liquid-applied coatings and metal cladding differ greatly. The least expensive option up-front is not necessarily the most cost effective over 20 years.

Repair, Overlay or Replace

In some cases a full strip-out is not necessary. If the structure is sound a roof overlay or a liquid-applied refurbishment may extend the life of the roof for a fraction of the cost. Your contractor should be able to inform you of these options and the risks associated along with what effect this may have on your warranty.

Allow for the Unexpected

Problems like saturated insulation or corroded decking are usually hidden in old materials. A contingency of 10-15% is reasonable. Asbestos-containing materials on older industrial sites need special treatment as well, so have this checked early.

Think About Disruption

When working above a warehouse, shop or office, it is important to plan the work around your business.

Look at the Whole Picture

There are a number of upgrades which can reduce a building’s running costs and qualify for tax allowances. These include improved insulation, rooflights, and solar-ready upgrades. When considering upgrades, ask for a breakdown of costs, compare warranties, and try to keep costs within a financial year. It is also important to get 3 quotes.

Advanced Professional Roofing will provide a free survey to create an itemised quote, giving you the opportunity to budget accurately.