Constructing a flat roof is quicker and cheaper than the traditional pitched roof with a cheaper installation cost and fewer materials. Flat roofs do however have concerns, as gravity will not help to push snow and water off the roof these weather conditions can cause the roof to degrade and leak.
This means that flat roofs also need a lot more maintenance than a pitched roof to keep them leak free and in good condition, but even with all the maintenance, your flat roof lifespan will only last around 10 to 15 years.
How long should it take to replace my flat roof?
Time frame for roof replacements will depend on size, access, height and materials used. But on average a single garage should take one day with two men working, and with a double garage allow for a day and a half. Even on small jobs taking less than one day, a competent and professional roofer would always come back the next day to ensure that the flat roof was watertight overnight.
Cost of Replacing or Repairing a Flat Roof
The average cost of replacing a flat roof is usually in the range of £700-£1500 depending upon what materials the roofing contractor uses, if scaffolding will be needed, and the size of the roof.
Most roofers operate in pairs and will usually charge around £200-£300 per day. Usually the job will be completed within a single day, and the roofer should always come back the next day to ensure there are no leaks.
Average costs for replacing a flat roof:
Single Garage £700 1 day time frame
Double Garage £900 1 day time frame
2-storey Extension £1200 1.5 days’ time frame
Choosing a Contractor for Flat Roof Replacement
Take your time when gathering cost and price estimates from roofing contractors and researching the different materials for your roof.
Be sure that your contractor can provide you with professional recommendations from previous jobs and certified from bodies such as the NFRC. If you choose to go with a built-up roof or modified bitumen, your contractors should be familiar with the safety requirements for this kind of roof installation. To find a qualified contractor who can help you replace your flat roof get a quote from I Want A Tradesman.