Covered roof spaces—pergolas, sheds, gazebos—create lovely hangout zones and protect from harsh sun. But if done badly, they can damage the building roof.
First, ensure any structure is lightweight unless the slab was designed for heavy loads. Metal frames or wooden pergolas are usually better than heavy brick-and-concrete rooms added casually.
Avoid drilling through waterproofing layers without proper sealing afterwards. Every bolt, anchor or cut can become a future leak point if not handled professionally.
Make sure water can still drain properly. Sloping, gutters, and downpipes must remain functional. New structures shouldn’t trap water or push it towards low points in the slab.
Check local rules and society bylaws too. Some places don’t allow permanent constructions on terraces, only temporary or demountable ones.
If designed thoughtfully, a covered roof space can make top-floor and terrace use far more comfortable without causing future repairs.