The best flat Roof Roofing material is certainly a single page of rubber tailor made for weather-proofing flat roofs, such as Firestone’s EPDM product.
This 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 mái tôn khung sắt anyway you may as well take the opportunity of renewing that at the same time.
This will function as recommendation you will get from any reputable builder or roofer advising you on replacing your existing flat roof.
Until recently the most popular material for a new flat roof was bituminous felt laid in three layers, the first layer nailed down and the high 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 then preparing it onto the underlying felt and spreading it consistently over the whole section of the roof.
Then you had to wait for the compound to cool before applying the next layer, and at 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 preventing the felt and bitumen degrading quickly.
This has been altogether a fairly messy, complicated and time-consuming job best left to the professionals. In addition, there were several development where it was very easy to fail to make the roof weather-proof, e. gary. where the edge of the felt met the prevailing tile or slate roofs of the pitch roof.
On top of that, if, or rather when, there developed a flow in the flat roof, it would be very difficult and messy to find out exactly where the rain was getting back in. Don’t often would the manifestation of the flow on the hall of the room below be directly below the foundation today. Water could easily get by way of a weak spot in the bitumen felt and travel along a rafter before descending to the hall board below.
The new generation of rubber-based flat roofs systems are far superior. If you have reasonable DIY abilities then you can probably babies, with an added person to assist. You can easily find a local supplier of rubber flat Roof Roofing material online, and the current price is only around £6. 65 per pillow metre.
Most suppliers cut the material to the exact shape and size that you want so there are no unnecessary joins, meaning no weak spot and an extremely long-lasting, leak-proof roof.
The vital area of the whole process is to ensure that there are no breaks between the rubber roof and any existing pitch roof where rain could possibly enter. To ensure there are no problems it is vital to run the rubber material up and under the tiles or slates of the adjacent pitch roof so that any rain still dripping wet from the lower-most row falls onto the rubber, with no possibility of 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 in this manner 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 that could obstruct the drainage of the water away.
Rubber roofs have been shown to last for over 50 years under all weathers, so it really is the only flat Roof Roofing material that you need to consider when deciding on a new flat roof.