How much does a new flat roof cost?
Obviously if you are in the market for a new flat roof, the next question is how much is it going to cost me, it is only natural. Here you will find the approximate answer to that question. This page will be updated when price changes occur.
Please read this article to understand some of the costs and factors that will increase or decrease the price of your flat roof repairs.
We are going to tell you roughly how much you will be charged for a new replacement flat roof, by giving you the flat roof costs per square metre where possible. Shown are the figures we charge for supplying and installing these types of flat roof, this should hold you in good stead based on standard like for like replacement flat roofs.
- The price of a new flat roof will depend on a few factors like:
- Specification – Quality of materials, trims and finish.
- Accessibility – Height and access or scaffolding.
- Size – A larger roof will cost less per square metre than a smaller roof due to man power and time saving considerations.
We will explain these after a brief summary of common flat roof choices and how much a new flat roof replacement costs.
A modern felt roof or built up felt roof, otherwise known as a Torch-on flat roof.
We charge £40 – 50 per m2 ( square metre ) if the boards underneath are not damaged. If they are, expect an additional cost of £40 per board fitted. ( board size 8’x4′ or 2.4m x 1.2m ).
EPDM rubber roof cost per square metre – Rubber roof prices
A modern rubber roof like firestone or similar, otherwise know as E.P.D.M.
Our prices are £80 per m2 if the boards underneath are not damaged, but the cost does include new OSB over boarding to adhere to the new rubber roof. This price would also include a good quality trim system like the permaroof system rather than the cheaper black metal trim system.
Fibreglass roof cost per square metre – GRP prices
A modern fibreglass GRP flat roof system with specialised roofing grade resins.
We charge £90 per m2 if the boards underneath are in good condition, but the price does include over boarding with new OSB3 which is essential to adhere a new fibre glass roof to. The price also includes good quality machine made trims and lead flashings wherever required.
Fibreglass bay roof costs – GRP bay roof prices explained
Most bay roofs are comparatively small compared to other types of fibre glass flat roofs. Whilst the square metre size of a bay roof can be 4m2 or less, unfortunately most of that is made up by pre-formed machine made trims, so whilst the money spent is reduced in surface area fibreglass, it is increased by trim cost and time spent fitting. Our charges currently range from £250 to £490 depending on size and complication with the option of stripping and insulating the bay roof cavity between the ceiling for an additional £50.
Lead bay roof – The cost of a new lead roof
Probably one of the trickiest small roof prices to give, not because of the level of complication or details that may be involved, but because of the vast choices of lead code ( thickness ) and the cost of the raw material ( new milled lead ). Not only do you have the physical size of the roof to be covered, but the code required or chosen can dramatically alter the price. Most lead bays less than 4m2 can be renewed in one day, for which we charge £300 plus the lead costs at current milled lead prices.
Flat roof replacement costs:
Factors that may alter the price of a new flat roof!
Flat roof specification – Every job is different. For example some obstacles to get past may include pipes, multiple or complicated trims, internal drainage, insulation, ventilation or flat roof material upgrades.
A flat roof 3 storeys up is not the same as one ten feet in the air. Sometimes scaffolding may be required to work safely, conservatories or other structures may hinder access.