Garage Roof Replacement

More than 3 out of 4 garage roofs contain asbestos. This is one of the most common challenges we encounter, and it's something we take extremely seriously. Asbestos is classified as a hazardous material, and when old garage roofing materials start to deteriorate, they can release dangerous fibres.

We only work with trained staff who understand hazardous waste regulations. Many clients ask, can you repair asbestos roofing? Our asbestos roof removal process follows strict safety protocols. We contain the work area, use appropriate protective equipment, and dispose of all non-asbestos and asbestos materials through licensed waste carriers.

Old asbestos garage roofs become dangerous when they're leaking or cracked. If you've got an old garage roof with corrugated sheets in goosewing grey or similar finishes from decades past, that's almost certainly asbestos. We can safely remove it and replace your garage roof with modern, safe materials that offer long lasting protection.

We install several types of garage roofing systems, and we'll help you choose the best roofing material for garages based on your budget, the structure of your garage, and how long you want the new roof to last.

EPDM Rubber Roofing for Flat Garage Roofs

EPDM rubber roofing is our most popular choice for flat roofs and flat garage roof replacements. This rubber membrane system can last up to 50 years, making it one of the longest-lasting options in domestic roofing. Modern EPDM garage roofs provide good all-round protection and can stretch up to 300 percent, which means they handle thermal expansion without cracking or splitting.

The material itself is durable and needs very little maintenance once it's correctly installed. We use cold-applied adhesives during installation for additional safety, and the finished surface is completely watertight. Single-ply membranes like EPDM have up to five times greater UV resistance compared to older felt or bitumen systems.

Steel Roofing Panels with Plastisol Coating

Steel garage roofs typically last over 35 years and offer exceptional resistance to UK weather conditions. The plastisol coating on quality steel roofing sheets provides strong protection against wind, rain, and temperature changes. Some systems come with a DRIPSTOP anti-condensation membrane as standard, which prevents moisture buildup inside the garage.

Steel is a popular choice for pitched garage roofs and for detached garages where you want a low maintenance solution that looks clean and professional. The panels are lightweight, quick to install, and they withstand heavy rain and high winds without any problems.

GRP Fibreglass Roofing Systems

Glass-reinforced plastic roofs are lightweight and extremely resistant to leaks. A well-installed GRP system often delivers 20 to 30 years of durability. Some modern GRP systems are designed as one-piece, seamless roofs, which removes many of the weak points that caused leaks in older multi-layered designs.

GRP can become brittle in very cold temperatures, but in most cases, this isn't a significant issue for garage roofs in the UK. The material is affordable, quick to install, and it provides a smooth, professional finish that's easy to keep clean.

Why We Don't Recommend Felt for Long-Term Garage Roof Replacements

Felt garage roofs are among the least durable roofing materials available. They require regular maintenance to prevent damage, and even with careful upkeep, they rarely last more than 10 to 15 years. Flat garage roofs built decades ago with felt often lose their waterproofing and experience multiple small leaks within the first decade.

We'll replace an old garage roofing system made from felt, but we won't install new felt as a long-term solution. The materials have improved, but they still don't match the performance or lifespan of EPDM, steel, or GRP.

When we replace your garage roof, we handle every part of the job. You get a fixed quote with no hidden fees, and we take care of all the components needed to deliver a watertight, long-lasting result.

Site Preparation and Safe Removal of Old Roofing Materials

We start by protecting the area around your garage. If there's asbestos present, we follow hazardous waste protocols. For non asbestos materials, we safely remove and dispose of everything, including old felt, corrugated sheets, timber battens, and damaged insulation.

Structural Assessment and Repairs to the Roof Frame

Before we install any new materials, we check the underlying structure. The roof frame needs to support the weight of the new garage roof. If we find rotten timber, weak sections, or inadequate support, we'll repair or replace those components. This is included in our service because we want to make sure your new roof sits on a solid base.

Installation of Insulation to Reduce Heat Loss and Condensation

Modern garage roof systems can deliver insulation improvements of up to 80 percent. We install high-quality insulation boards that reduce heat transfer by up to 90 percent, keeping internal temperatures stable and preventing condensation. This cuts condensation risk by up to 70 percent, which protects stored items and prevents mould growth.

Fitting the New Garage Roofing Material with Professional Installation Standards

We install your chosen roofing material using manufacturer-approved methods. Every seam, join, and edge is sealed correctly. We measure everything precisely and make sure the roof covering fits properly with no gaps or weak spots. Our team is equipped with the right tools and trained in the correct installation techniques for each material type.

Drainage, Guttering, and Fascia Work to Manage Rainwater Effectively

A garage roof replacement isn't complete without proper drainage. We install or replace guttering to direct rainwater away from the walls and foundation. Fascias and soffits are included where needed, and we make sure rainwater flows away from the building without causing damp or erosion.

In some cases, we can add natural ventilation systems to improve airflow and reduce condensation inside the garage. This is especially useful if you use the space for workshop activities or vehicle storage.

The cost of a new garage roof depends on the size of your garage and the materials you choose. If you’re wondering how much to repair a garage roof, the average garage roof replacement costs between £750 and £3,500 in 2025. Flat roof replacements typically fall at the lower to middle end of that range, while pitched roofs sit at the higher end.

Several factors influence the final garage roof cost:

Size and Access

A larger garage roof requires more materials and takes longer to install. If your garage is attached to your house, we'll need special flashing to prevent water ingress at the join. This adds to the project scope but it's necessary to protect both structures.

Material Choice

EPDM rubber roofing sits in the mid-range for cost but offers exceptional value when you consider the 50-year lifespan. Steel roofing panels cost more upfront but they're a popular choice for homeowners who want minimal maintenance for decades. GRP systems are affordable and durable, making them a good option if you're working within a tighter budget.

Removal and Disposal Requirements

If we're removing asbestos, the disposal costs are higher because we have to use licensed carriers and follow strict regulations. Old roofing materials made from felt, timber, and non asbestos corrugated sheets are less expensive to dispose of, but they still need to be removed safely and correctly.

Additional Work Needed

Some projects require structural repairs, upgraded insulation, replacement guttering, or soffit and fascia replacement. We'll identify any additional components during our initial roof inspection by drone and include them in your accurate quote.

Building regulations in the UK typically do not require planning permission for garage roof replacements under permitted development. In most cases, replacing a garage roof falls within permitted development rights, which means you can go ahead without applying for planning permission.

There are exceptions. If your property is in a conservation area or if you're making significant changes to the height or structure of the garage, you might need to check with your local authority. We can provide expert advice on this during our consultation, but we're not legal advisors, so you should confirm any requirements with your council if you're uncertain.