Guardian Warm Roof UK is a certified warm roof installation company based in Coleshill, Birmingham, serving homeowners across the UK. We have built our reputation on one thing: doing the job properly, with the right product, fitted by people who know what they are doing.
We are a Guardian Certified Installer and hold Trustmark Scheme status, which places us among a select group of approved contractors trusted to fit the UK's leading warm roof system. Our 5 star reviews on Google, Trustpilot and Birdeye reflect what that means in practice, with homeowners consistently recognising our workmanship, communication and the quality of the finished result.
Guardian is the brand leader in warm roofs and the only warm roof company to hold Trustmark Scheme status. That status is not handed out. It comes from the independent testing Guardian undertakes on its roof system and the rigorous certified installer scheme it operates. When you choose Guardian Warm Roof UK, you are choosing an installer that has met those standards.
Guardian Slate and Metrotile tile options have been independently fire tested with the roof system by BRE, in accordance with EN 13501-5:2016, and achieved BROOF(t4) classification. That level of independent third-party testing is rare in this industry. There are cheaper warm roof products on the market, but the Guardian warm roof system is the Rolls Royce of warm roofs, and it is the only product we install.
Our certification, our Trustmark status and our customer reviews on Google, Trustpilot and Birdeye all point to the same thing: a company that takes quality seriously and stands behind its work.


We are based at Gorsey Lane, Coleshill, Birmingham, B46 1JU, and we work with homeowners across the UK including Scotland & Wales. Our team travels to where the work is, and we bring the same standard of installation to every job regardless of location.
Our customers come to us from Milton Keynes, Coventry, Warwickshire, Northamptonshire and across the wider Midlands area as well as the North East, North West & London. If you are unsure whether we cover your area, get in touch and we will confirm a competitive like for like price.


A warm roof system is designed to replace existing glass or polycarbonate conservatory roofs while keeping your original windows, doors, frames and walls in place. The existing structure is retained wherever it is safe and structurally sound to do so, which keeps disruption low and means your conservatory does not have to be rebuilt from scratch.
The warm roof system is built using a lightweight structural frame combined with multiple layers of rigid insulation and a choice of tile finishes. This construction positions insulation above the structural deck, which is key to both thermal performance and condensation control. Cold bridging is eliminated, moisture risk is properly managed, and the roof structure performs consistently across every season.
Modern warm roofs can achieve U-values as low as 0.15 W/m²K. That compares very favourably to older polycarbonate or glass systems and comfortably meets current UK Building Regulations for thermal performance. It is not just about warmth in winter. A well-insulated warm roof also prevents overheating in summer, which is increasingly relevant as UK heatwaves become more frequent.







