Dreams dictionary: Thatch
Dreams dictionary: Interpretation 1
To dream that you are thatching a roof indicates that you are putting up a barrier between your conscious and subconscious state. You are not ready to confront issues from your subconscious.
Dreams dictionary: Miller Dream Interpretation
To dream that you thatch a roof with any quickly, perishable material, denotes that sorrow and discomfort will surround you. If you find that a roof which you have thatched with straw is leaking, there will be threatenings of danger, but by your rightly directed energy they may be averted.