住頂層單位,如何有效隔熱?

公屋的頂層頂單位,如何有效隔熱?
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_33.gif

由簡單及平價錢順序排列:
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_22.gif

1-室內天花黏上發泡膠(小心無阻燃會著火)
2-室內天花黏上有阻燃性的隔溫材料.
3-利用空氣隔溫,做一層假天花.(深度愈深隔溫愈高)
4-做一層假天花及裝有抽氣扇.(打鮮風入,抽走熱氣)
若有其他問題你可電郵提供多一些資料或相片.
E-mail: [email protected]
希望能夠解答到你的問題
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_21.gif

參考實物相片記載
http://hk.myblog.yahoo.com/martinwong-martinwong
註:
每一件事對於每一個人有不同的睇法;沒有一個絕對正確或錯的答案;只有合適的答案.
經驗係由經歷去累積;實踐過的經歷當中有成功的經歷或失敗的經歷

something you can do on the roof top but I don't know whether it is your responsibility or you are authorized to do this.
1. Grow some plants on the roof.
2. Let the roof floor have a shower every evening.
3. Cover the roof with a nelon net. It is generally used by farmers, plant lovers. It is very cheap and easy to handle. I have a net built above my roof top, I can walk on the roof floor without shoes. The feeling under feet is slightly hot only. But if walk on the roof floor without net above, the temperature is too hot to walk on. The net generally in black is 6 feet wide $4.5/feet and most of the garden ware suppler have this (especially in the New Territories). But this is used outdoor only.

在屋內裝上隔熱既假天花即可.

能在天台種些植物嘛?
我覺得會有幫助