birkdale fibre cement roof slate for roofs down to 15 degrees. cerber fiber cement siding – premium 2 coat solid black / wood grain 5/16\”x8-1/4\”x12\u0027. fibre cement roofing / slate look cemsix cembrit limited. -_marcel van coile_waarschoot1009_3580. how a professional cedar shake roofing company knows if your roof needs to be replaced cracked wood shingles. need a roofer? get 4 free quotes from local pros:. fiber cement siding by james hardie.