How Much to Replace a Flat Roof
Cost Implications to Replacing a Flat Roof
Replacing a flat roof can be a significant investment, and the cost varies depending on factors such as materials, labour, and the size of the roof. Whether the replacement is for a home, garage, or commercial building, understanding the costs involved can help in planning and budgeting effectively.
The material chosen for a flat roof plays a major role in determining the overall cost. Felt roofing is one of the most affordable options, typically costing between £40 and £70 per square metre, including installation. EPDM rubber roofing is slightly more expensive at £80 to £100 per square metre but offers greater durability. GRP fibreglass roofing is another high-performance option, costing between £90 and £120 per square metre. PVC and TPO membranes are premium choices, with prices ranging from £100 to £150 per square metre.
Labour costs also influence the price of a flat roof replacement. Roofers in the UK typically charge between £150 and £250 per day, depending on their experience and location. A small flat roof replacement, such as on a garage or extension, may take one to two days to complete, while larger projects can take longer. Additional costs may arise if old roofing materials need to be removed and disposed of before installation.
The size and complexity of the roof affect the total replacement cost. A small garage roof of around 20 square metres may cost between £800 and £2,000, depending on the materials used. A larger residential flat roof of 50 square metres can range from £3,000 to £6,000. Commercial flat roofs, which often exceed 100 square metres, may cost anywhere from £8,000 to £15,000 or more. Roofs with additional features such as skylights or ventilation systems may require custom installations, increasing the price.
Other factors that may impact the cost include insulation, drainage, and structural repairs. If the roof structure is damaged, additional reinforcement may be needed, adding to the overall expense. Upgrading to better insulation, such as rigid foam boards, can improve energy efficiency but may increase costs by £20 to £40 per square metre. Proper drainage solutions, such as tapered insulation or extra downpipes, may also be required to prevent water pooling.
In conclusion, the cost of replacing a flat roof depends on the chosen material, labour fees, roof size, and any additional work required. While budget-friendly options exist, investing in high-quality materials and professional installation can ensure durability and long-term savings. Getting multiple quotes from roofing specialists can help find the best deal and ensure the replacement meets all necessary standards.