This extra layer will cost between 10 and 15 per square metre.
Resin flat roof cost.
The cost of this uplifting would come out at 12 and 20 extra per square metre when compared to 20 to 25 year flat roofing system.
Material cost below you ll find a list of the materials required to replace a single garage flat roof along with prices.
Flat roof coatings will cost between 0 15 to 2 00 per square foot for materials and an additional 0 50 to 3 00 per square foot for labor as broken down in the cost per square foot section above.
One of resin then csm and then finally another layer of resin.
Osb 3 timber decking.
Rubber roofs costs start from 80 per m2.
For fibreglass expect to pay from 90 per m2 and for fire glass bay roof from 250 per square metre.
Why does the guarantee impact on the cost.
Flat roof cost per square metre.
Osb 3 stands for orientated strand board flat roof grade decking of a minimum thickness of 18mm and dimensions 2400mm x 600mm is recommended.
A flat roofing system with a 40 year guarantee will consist of an extra 3 layers.
Additional costs for grp flat roofing with longer guarantees.
Flat roof prices start from 40 per m2 for felt roofs.
You can order a range of different flat roofing kits from resin library.
Lead bay roofs are even more expensive starting from 300 per m2.
Sometimes two layers are installed if the intention is to use the flat roof as a terrace.
If you want a longer guarantee then the contractor will need to install an additional coating of resin in order to warranty the roof for 30 years.