Flat to Pitched Roof Conversion: Enhancing Building Design and Durability

Subscribe for regular updates.

Maguire Brothers - Flat to pitched Roof conversion

So, let’s dive into the ins and outs of flat to pitched roof conversions. Flat roofs are not a conventional feature in traditional UK building design, except perhaps in the case of specific areas on churches or other architecturally significant buildings. Post-Second World War, the inclusion of flat roofs has gradually become more prevalent.

However, during the early period, there was limited to frequently subpar results. Consequently, many still perceive flat roofs as a cheap and unreliable option, prompting numerous inquiries from our clients about the feasibility of constructing a pitched roof over an existing flat one.

Considerations for Investment: Cost and Longevity Analysis

Most business investments aim for an enhanced return. Therefore, the answer to this question might involve assessing the cost and longevity of both options and comparing them based on ‘cost per year of life expectancy.’

Technical Challenges in ‘Flat to Pitched Conversion’

Nonetheless, a ‘flat to pitched roof conversions’ demands extensive information gathering and consideration. For instance, determining whether the existing structure can bear additional loads and prevent wind uplift imposed by the pitched roof may require pull-out tests to check structural integrity, involving substantial input from a structural engineer.

Designing the Roof: Structural Considerations and Materials

To reasonably price the project, the roof must be designed, usually involving a lightweight steel structure and waterproofing with a lightweight roof finish due to the added loading. Other design elements, such as fascias, soffits, and drainage, must also be considered. Unlike flat roofs, pitched roofs necessitate fascias and rainwater goods on all elevations, potentially requiring new drainage runs.

Additionally, obtaining planning permission and managing associated costs and risks are crucial steps.

In summary, securing a reliable budget estimate may incur substantial costs before the project even commences. Contrary to the premise that flat roofs are unreliable and short-lived, a well-designed, high-performance flat roofing system can last for 50 years, surpassing the lifespan of some pitched roof coverings.

In our comparisons, flat roofs consistently prove to offer the best value. However, considerations extend beyond price; a pitched roof may enhance a building’s appearance, increase its freehold value, improve the neighborhood aesthetics, or provide additional accommodation, resulting in significant cost benefits.

This article, as with all other articles we produce, is for guidance purposes only. It does not constitute formal advice and should not be relied upon as such. For bespoke, unbiased advice relating to your commercial roofing project please contact us and we would be pleased to assist.

More inspiration.

Get in touch with us.

Contact with the team today and we’ll help you find the best solution for your project.