Frequently Asked Questions General Enquiries My building is not applicable under SGIS. Is it still possible for us to seek your advice? How can I post pictures under the ‘projects’ page and/or be listed as a contractor under the 'resources' page? If plants are exposed to a prolonged period of drought, will they grow back subsequently? What is the average weight of a green roof system? Is an irrigation system required? What is the lifespan of green roof? Will a green roof affect my waterproofing? Is rooftop greenery expensive to maintain? Skyrise Greenery Incentive Scheme Enquiries How do I apply for this scheme? Is there a maximum cap on the amount of green area that can be subsidized? Will maintenance costs be included in the subsidy? Is the scheme applicable for indoor vertical greenery? Can my contractor apply for this scheme on the building owner’s behalf? Who is eligible for the Skyrise Greenery Incentive Scheme? How much is the incentive payout amount? Is it necessary to wait for NParks’ approval before proceeding with the installation? How long will it take for the cash incentive to be disbursed? Why is it necessary to have the five year maintenance contract or assurance? General Enquiries My building is not applicable under SGIS. Is it still possible for us to seek your advice? Yes. We provide free consultancy services regarding the suitable Skyrise Greenery systems available in the market and suitable plant selection. We also provide advice on certain issues in pre- and post-installation matters based on experiences gathered from other completed projects of similar nature. Back to top How can I post pictures under the ‘projects’ page and/or be listed as a contractor under the 'resources' page? Please let us know by filling up the query form below: If the form below is not loaded, you can also fill it in at here. Powered by FormSG Back to top If plants are exposed to a prolonged period of drought, will they grow back subsequently? It depends on your choice of plants, which should be hardy and drought-tolerant. Back to top What is the average weight of a green roof system? The average weight of green roof system ranges from 50-150 kg/m2. It is advisable to consult a certified Professional Engineer on the load bearing capacity of the roof structure, regardless of whether you are working with a new or existing building. Back to top Is an irrigation system required? Green roofs are intended to be non-irrigated. Usually, the drainage layer comes incorporated with an integrated water reservoir. However, green roofs with integrated irrigation are not uncommon. If you are considering installing irrigation for your green roof, drip-irrigation is the preferred choice. Sub-surface drip irrigation optimizes the use of water by directly dampening the substrate. Back to top What is the lifespan of green roof? The lifespan of a green roof is about 20 years. It can last longer when well maintained. The conventional exposed roofs need maintenance every five to ten years. Back to top Will a green roof affect my waterproofing? Correct installation of a green roof will not have any adverse affect on the waterproofing. The additional layers of a green roof can protect the roofing membrane from UV rays, extreme temperature fluctuations and puncture. The reduced stress can double the waterproofing’s serviceable life. Back to top Is rooftop greenery expensive to maintain? Maintenance costs vary. You can work with your contractor to design a solution to fit within your budget. For the lowest cost, consider a sustainable green roof where plants are allowed to flourish together as nature intends. Maintenance is infrequent and this is the best choice to achieve biodiversity, and an environmentally friendly rooftop greenery. Skyrise Greenery Incentive Scheme Enquiries How do I apply for this scheme? Thank you for your interest in our incentive scheme - please fill up the query form here and we will assign a Manager-in-charge who will get back to you at his/her soonest. Back to top Is there a maximum cap on the amount of green area that can be subsidized? No, there is no maximum cap on green area under SGIS. Back to top Will maintenance costs be included in the subsidy? No, maintenance costs will not be factored in during reimbursement. Back to top Is the scheme applicable for indoor vertical greenery? No. However, please feel free to clarify with us by filling up the query form here. Back to top Can my contractor apply for this scheme on the building owner’s behalf? Yes, the contractor can submit the application form on the building owner’s behalf. Please note that the ‘name of applicant’ will have to be the building owner’s. Back to top Who is eligible for the Skyrise Greenery Incentive Scheme? SGIS is applicable to developers and owners of existing buildings throughout Singapore who wish to benefit from the cash incentive for installing Skyrise Greenery. Please refer to herefor more details on eligibility. Back to top How much is the incentive payout amount? The cash incentive covers up to 50% of the Skyrise Greenery installation costs or a maximum of $200 per metre square for rooftop greenery and a maximum of $500 per metre square for vertical greenery, whichever is lower. Please refer to the calculation guide. Back to top Is it necessary to wait for NParks’ approval before proceeding with the installation? It is advisable to submit the application form(s) before installation commences. NParks will grant an in-principle approval to owner/developer, upon receiving the application forms, which is subject to project completion/installation within a 6-month period. Renewal of grant will be on a case-by-case basis. Back to top How long will it take for the cash incentive to be disbursed? Eight weeks upon inspection of completed works and submission of approved invoice. Back to top Why is it necessary to have the five year maintenance contract or assurance? The purpose of SGIS is to encourage public-private partnership in environmental sustainability and the five years of maintainence contract for the roof/wall is to ensure its usefulness.