The best flat roof roofing material is undoubtedly an individual sheet of rubber custom made for weather-proofing flat roofs, such as for example Firestone’s EPDM product.
This is laid directly onto roof boarding, itself supported by the roof rafters and nagging. Insulating material is normally 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 at the same time.
This will almost certainly function as recommendation you obtain from any reputable builder or roofer advising you on replacing your existing flat roof.
Until recently the most used material for a new flat roof was bituminous felt laid in three layers, the first layer nailed down and top of the two bonded to the one beneath with mastic bitumen. Depending on the material used, this could mean heating a solid bitumen-based compound to make it liquid, and pouring it onto the underlying felt and spreading it evenly over the whole area of the roof.
Then you had to hold back 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 natural sunlight and prevent the felt and bitumen degrading quickly.
This was altogether a rather messy, complicated and time-consuming job best left to the professionals. In addition, there were several stages where it had been very easy to fail 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.
On top of that, if, or rather when, there developed a leak in the flat roof, it might be very difficult and messy to discover wherever the rain was getting back in. Seldom would the manifestation of the leak on the ceiling of the area below be directly below the source of it. Roofing Companies Lafayette La 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. In case 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 only around ï¿½6.65 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.
The vital part of the whole process is to ensure that there are no gaps between the rubber roof and any existing pitch roof where rain could possibly penetrate. To ensure there are no problems it is critical to run the rubber material up and beneath the tiles or slates of the adjoining pitch roof in order that any rain dripping from the lower-most row falls onto the rubber, without 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 method of water escape is maintained. The rubber is simply glued onto the roof boards and sealed where appropriate with metal brackets or bitumen in such a way that rain penetration is impossible. Mind that the glue covers the entire underneath of the rubber so as to avoid bumps in the surface that could obstruct the drainage of the water away.
Rubber roofs have been shown to last for well over 50 years under all weathers, so that it really is the only flat roof roofing material you need to consider when deciding on a new flat roof.