Many slope in several directions like squashed hip roofs toward scupper holes that connect to downspouts.
Flat roof fascia construction.
Go over the seam 2 3 times so the putty gets pushed into it.
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The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
For additional stability you can also use steel joists that are built into one or both of the walls.
The most important thing to know about a flat roof says tom is that it s not flat to prevent water from pooling and eventually invading the home flat roofs are always built on a slight incline at least 1 8 inch per foot.
Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules.
Mix the filler with a putty knife on a flat sheet of cardboard or on a plate and scrape it onto your fascia board.
Then cover all of your nails with the putty as well.
A waterproof exterior layer is essential and there are a number of options including bitumen based felt or asphalt epdm rubber and pvc based systems as well as cold applied liquid systems bitumen coverings.