The best flat roof roofing material is without a doubt an individual sheet of rubber tailor made for weather-proofing flat roofs, such as Firestone’s EPDM product.
That is laid directly onto roof boarding, itself supported by the roof rafters and nagging. Insulating material is generally laid in the space between the two, and if you are renewing your flat roof anyway you might as well take the chance of renewing that concurrently.
This will almost certainly be the recommendation you obtain from any reputable builder or roofer advising you on replacing your existing flat roof.
Until recently the most famous material for a fresh flat roof was bituminous felt laid in three layers, the initial layer nailed down and the upper two bonded to the one beneath with mastic bitumen. According to the material used, this could mean heating a good bitumen-based compound to make it liquid, and then pouring it onto the underlying felt and spreading it evenly over the whole area of the roof.
Then you had to wait for the compound to cool before applying another layer, and by the end spreading a layer of stone chippings over the roof and bonding it with a chipping compound, this being to reflect the sun’s rays and stop the felt and bitumen degrading quickly.
This was altogether a fairly messy, complicated and time-consuming job best left to the experts. In addition, there have been several stages where it was very easy to neglect to make the roof weather-proof, e.g. where the edge of the felt met the prevailing tile or slate roofing of the pitch roof.
In addition, if, or rather when, there developed a leak in the flat roof, it would be very difficult and messy to discover wherever the rain was getting in. Seldom would the manifestation of the leak on the ceiling of the area below be directly below the foundation of it. Water could easily get through a weakness in the bitumen felt and travel along a rafter before descending to the ceiling board below.
The brand new generation of rubber-based flat roofing systems are far superior. Should you have reasonable DIY abilities then you can certainly probably do-it-yourself, with one other person to aid. You can easily find a local supplier of rubber flat roof roofing material online, and the current price is around �6.65 per square metre.
Most suppliers slice the material to the exact size and shape that you require so there are no unnecessary joins, meaning no weaknesses and an exceptionally long-lasting, leak-proof roof.
Roof Cleaning in Nottingham of the whole process is to make sure that there are no gaps between your rubber roof and any existing pitch roof where rain may penetrate. To ensure you can find no problems it’s important to run the rubber material up and under the tiles or slates of the adjoining pitch roof so that any rain dripping from the lower-most row falls onto the rubber, with no chance for it over-lapping the edge and getting underneath the pitch roof.
Also, make sure that the prevailing slope of the flat roof towards the guttering or other means of water escape is maintained. The rubber is simply glued onto the roof boards and sealed where appropriate with metal brackets or bitumen so that rain penetration is impossible. Mind that the glue covers the whole of the underneath of the rubber so as to avoid bumps in the surface which could obstruct the drainage of the water away.
Rubber roofs have been proven to last for well over 50 years under all weathers, so that it really is the only flat roof roofing material that you need to consider when deciding on a new flat roof.