For older landed properties, the metal-roofing-contractor-singapore must assess the feasibility of installing a new metal roof over the existing structure (an overlay or re-roofing) versus a complete tear-off and replacement; while overlaying can be cost-effective and faster, the contractor must confirm the underlying structure can bear the additional load and that the roof deck is so... https://kkroofspecialist.com.sg/metal-roofing-contractor-singapore/