Garage Roof

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Stay Safe & Don't Worry About Exact Numbers! There is no need to climb your roof. Simply estimate the dimensions to your best knowledge. I will personally take precise measurements during a free site visit, and the final price will be calculated using the exact same transparent formula.

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15 Yrs System Warranty 25 Yrs Expected Lifespan
The highly recommended choice for long-term peace of mind. I will install a heavy-duty underlay followed by a premium charcoal mineral top sheet. Welding these two layers together creates a thick, impenetrable shield against the harsh British weather. This system is designed to last at least 15 years, keeping your garage bone-dry and secure.
Tecnatorch SBS Torch-On Mineral Felt Charcoal
Tecnatorch SBS Torch-On Mineral Felt Charcoal

Included in Price

Tecnatorch SBS Torch-On Plain Capsheet Sanded
Tecnatorch SBS Torch-On Plain Capsheet Sanded
Tecnatorch SBS

This SBS-modified sanded felt is the core component that upgrades your roof to a high-performance dual-layer system. It provides a robust, elasticated base that perfectly bonds with the final charcoal cap sheet for maximum strength. This foundation layer allows the roof to expand and contract safely during UK weather extremes, preventing cracks and leaks. Choosing this system ensures the highest level of durability and long-term peace of mind.

Included
Felt drip edge (4 sides Hardboard)
Felt drip edge (4 sides Hardboard)

Installing a hardboard trim around the entire roof perimeter to create sharp, rigid drip edges for the new felt. This solid backing allows the felt to be formed into a neat overhang, rather than a weak curve. It effectively directs rainwater away from the fascia boards and stops water from tracking back underneath the roof. This ensures a clean, professional finish and full perimeter protection.

Included
Bitumen Primer: Material Application
Bitumen Primer: Material Application
Cromar

Applying a bitumen primer is a crucial preparation step before installing the new waterproofing system. This liquid coating seals the existing substrate and locks in any remaining dust. Its main purpose is to create the perfect conditions for the first layer of felt to adhere flawlessly. This guarantees a strong, permanent bond between the treated surface and the felt.

Included
Ladder Access Work (Scaffolding Not Included)
Ladder Access Work (Scaffolding Not Included)

This service includes access using standard ladders or a hook ladder. Many repairs can be carried out efficiently without the need for scaffolding, saving both time and cost. However, safety is always our priority. If site conditions do not allow safe ladder use (e.g. limited space or difficult access), scaffolding may be required and is not included in this price.

Included
Felt drip edge (4 sides Hardboard)
Felt drip edge (4 sides Hardboard)

Installing a hardboard trim around the entire roof perimeter to create sharp, rigid drip edges for the new felt. This solid backing allows the felt to be formed into a neat overhang, rather than a weak curve. It effectively directs rainwater away from the fascia boards and stops water from tracking back underneath the roof. This ensures a clean, professional finish and full perimeter protection.

Included
Bitumen Primer: Material Application
Bitumen Primer: Material Application
Cromar

Applying a bitumen primer is a crucial preparation step before installing the new waterproofing system. This liquid coating seals the existing substrate and locks in any remaining dust. Its main purpose is to create the perfect conditions for the first layer of felt to adhere flawlessly. This guarantees a strong, permanent bond between the treated surface and the felt.

Included
Ladder Access Work (Scaffolding Not Included)
Ladder Access Work (Scaffolding Not Included)

This service includes access using standard ladders or a hook ladder. Many repairs can be carried out efficiently without the need for scaffolding, saving both time and cost. However, safety is always our priority. If site conditions do not allow safe ladder use (e.g. limited space or difficult access), scaffolding may be required and is not included in this price.

Included

Optional Add-ons

This service involves a complete restoration of the existing lead flashing. First, the surface is mechanically cleaned using a wire brush to remove oxidation and debris. We then apply Lead Patination Oil, which protects the metal from weathering and prevents white carbonate staining on your roof. Finally, the brickwork joint is cleaned and resealed using a high-quality specialist lead sealant (silicone) to ensure a long-lasting, watertight finish.

Installation of new Code 4 lead flashing (150mm) to create a secure, watertight seal where the roof meets the brickwork. We professionally fit the lead into the masonry joints and apply Lead Patination Oil to the surface. This protective coating prevents natural oxidation and stops white carbonate streaks from staining your new roof. The joints are finished with high-quality specialist lead sealant, which stays flexible and handles temperature changes better than standard silicone. This method ensures a long-lasting lifespan and reliable protection against the weather.

A surcharge for removing old protective stone chippings from the existing roofing felt. Years of weather exposure cause these stones to melt and bond into a solid crust with the underlying bitumen. Removing them requires intensive physical labour to chip and scrape the surface clean. This crucial step ensures the new roof adheres properly.

Replace weakened or failing garage roof joists to ensure the entire structure remains stable and secure. This is necessary when existing timbers are soft from rot, bowing under weight, or compromised by pests. We provide and install new, high-quality timber joists up to 4 metres long. Simply specify the number of joists required; the price is calculated per unit for a complete installation.

Essential when your roof deck is rotten or sagging. We strip all old felt and timber boards back to the bare joists, creating a clean base for reconstruction. Price includes all labour, professional skip hire delivered to your site, and licensed waste disposal fees. No hidden costs for rubbish clearance. Note: This covers removal only; please also add "New OSB Deck Installation" to your estimate to include the new structural boards.

We create a rock-solid foundation using premium 18mm OSB3 moisture-resistant boards, specifically engineered for structural use in the British climate (BS EN 300 standard). These high-performance boards offer superior strength and durability compared to standard chipboard, ensuring a perfectly flat and stable base for your new roof. Each sheet is precision-fitted and securely fastened to the joists to prevent future movement. Note: This service covers new material and installation only.

A surcharge for removing old protective stone chippings from the existing roofing felt. Years of weather exposure cause these stones to melt and bond into a solid crust with the underlying bitumen. Removing them requires intensive physical labour to chip and scrape the surface clean. This crucial step ensures the new roof adheres properly.

Installation of new Code 4 lead flashing (150mm) to create a secure, watertight seal where the roof meets the brickwork. We professionally fit the lead into the masonry joints and apply Lead Patination Oil to the surface. This protective coating prevents natural oxidation and stops white carbonate streaks from staining your new roof. The joints are finished with high-quality specialist lead sealant, which stays flexible and handles temperature changes better than standard silicone. This method ensures a long-lasting lifespan and reliable protection against the weather.

This service involves a complete restoration of the existing lead flashing. First, the surface is mechanically cleaned using a wire brush to remove oxidation and debris. We then apply Lead Patination Oil, which protects the metal from weathering and prevents white carbonate staining on your roof. Finally, the brickwork joint is cleaned and resealed using a high-quality specialist lead sealant (silicone) to ensure a long-lasting, watertight finish.

Estimate Summary

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Garage Roof Cost Calculator for Brighton & Hove

If you are planning garage roof work in Brighton, Hove or the surrounding areas, my garage roof cost calculator gives you a simple way to check an estimated price before you are ready to book the job. You may not want the work done straight away. You might be thinking about it for later this year, next year, or you may simply want to know whether the cost is realistic before making any decision.

I built this calculator for homeowners who want a practical starting point before contacting a roofer. It is designed to help you understand the likely cost of a garage roof repair or replacement without pressure, guesswork or a long conversation before you are ready.

Plan Your Garage Roof Budget Before You Contact a Roofer

A lot of people are not looking for an urgent quote today. They simply want to understand roughly how much a garage roof replacement or repair could cost, especially if the roof is old, leaking, cracked, holding water, or starting to look tired.

The calculator is especially useful if you live in Brighton or Hove and you are trying to plan your budget properly. Instead of guessing, you can enter the basic roof details and get an estimated price range before contacting me. This helps you decide whether the work fits your budget now, whether you need to plan ahead, or whether you want to move forward and arrange the next step.

I know from experience that many garage roofs look simple from the outside, but the cost can change once the details are checked properly. A small roof with easy access is not the same as a larger garage roof with old felt, damaged timber, poor drainage, awkward edges or difficult access around the property.

The calculator is not meant to replace a proper inspection, because every garage roof is slightly different. Access, roof size, old materials, decking condition, waste removal and edge details can all affect the final price. But if you want a sensible estimate before asking for a full quote, it gives you a much better starting point than a random guess.

Who Is This Garage Roof Calculator For?

This garage roof calculator is mainly for homeowners who want a realistic idea of cost before making a decision. You may not be ready to book the work today, and that is completely normal. Many people simply want to know what kind of budget they may need before they start speaking to a roofer properly.

Homeowners Planning Work Later in the Year

If you know your garage roof needs attention but you are planning the work for six months’ time, next year, or when your budget is ready, the calculator gives you a useful starting point. It helps you see whether the likely cost is close to what you expected, or whether you need to plan a little further ahead.

This is especially helpful if the roof is still doing its job for now but showing warning signs. Cracks, bubbles, standing water, soft decking, loose edges or damp marks inside the garage are all signs that the roof may need proper attention before it becomes an urgent problem.

People Comparing Garage Roof Options

A garage roof can often look simple from the ground, but the final price can change depending on the size, access, existing roof covering, timber condition, edge details and the type of system you choose. The calculator helps you understand the basic price range before you decide whether to repair the roof, replace it, or ask for a more detailed quote.

Some homeowners only need a small repair. Others may be better off replacing the whole garage roof, especially if the existing covering is badly aged or the decking underneath has started to fail. The calculator helps you get a clearer idea before making that decision.

Homeowners in Brighton, Hove and Nearby Areas

I created this page mainly for people in Brighton and Hove, but it is also useful if you are nearby in places such as Portslade, Southwick, Shoreham-by-Sea, Lancing, Sompting, Goring-by-Sea, Ferring, Angmering or Littlehampton. If the estimated price looks suitable and the job is within my working area, you can then contact me with more confidence.

Customers Who Want a Clear Price Before Contacting Me

I know that not everyone wants to call a roofer just to ask, “roughly how much will it cost?” This calculator is designed to make that first step easier. You can check the estimate yourself, take your time, and only contact me if the price feels realistic for your garage roof project.

Garage Roof Prices in Brighton, Hove and Nearby Areas

Most people who use my garage roof cost calculator are looking for a sensible starting price before they arrange anything properly. This is especially useful in areas such as Brighton and Hove, where garage roofs can vary a lot from one property to another. Some garages are easy to access, some are built close to neighbouring walls, and some have old coverings that need to be removed before any new roof system can be installed.

I mainly focus this service around Brighton and Hove, but I also cover nearby areas where garage roof repairs and replacements are commonly needed. If you are in Portslade, Southwick, Shoreham-by-Sea, Lancing, Sompting, Goring-by-Sea, Ferring, Angmering or Littlehampton, the calculator can still give you a useful guide price before you contact me.

The estimate is not meant to be a final fixed quote without seeing the roof. It is there to help you understand whether the likely cost is within your budget. If the price looks realistic and you are happy with the estimate, you can then send me the details, photos if needed, and I can let you know what the next step would be.

For many homeowners, this is the most useful part of the process. You can check the rough price first, think about it properly, and then decide whether you want to move forward. There is no need to book anything immediately just because you have used the calculator.

Why Location Can Matter for Garage Roof Work

Location can sometimes affect the final cost because access, parking, waste removal and travel time can all make a difference. A straightforward garage roof in Hove or Portslade may be easier to assess than a garage with difficult rear access or limited parking in central Brighton.

In some streets, materials and waste have to be carried further than expected. In other cases, the garage may be behind the property, attached to a neighbour’s wall, or positioned where ladders and materials are harder to use safely. These details do not always seem important at first, but they can affect the amount of time and labour needed to complete the job properly.

That is why the calculator gives a guide price, while the final quote may still need a proper check. It gives you a useful estimate, but I would still need to understand the roof properly before confirming the exact cost.

For homeowners in Brighton, Hove and nearby Sussex areas, the calculator is a simple way to plan ahead. You do not need to be ready to book the work immediately. You can use it to get an idea of the cost now, then come back to me later when you are closer to starting the project.

What Can Affect the Cost of a Garage Roof?

The price of garage roof work depends on more than just the size of the roof. Size is important, but it is only one part of the full picture. The condition of the existing roof, the type of material already installed, the quality of the decking underneath and the amount of preparation needed can all change the final cost.

If the existing garage roof covering is badly cracked, leaking or holding water, it may need to be stripped back properly before the new system is installed. If the timber decking underneath is soft, rotten or damaged by long-term water ingress, it may also need replacing. This is why two garage roofs that look similar from the outside can sometimes have different final prices.

Edge details can also make a difference. Some garage roofs have simple straight edges, while others have walls, awkward corners, pipes, trims, outlets or joins into neighbouring structures. These areas need to be handled properly because they are often where leaks start if the work is rushed or poorly detailed.

Access is another important factor. If the garage is easy to reach and materials can be moved safely, the job is usually more straightforward. If access is tight, blocked or awkward, the work may take longer. The calculator helps with the first estimate, but the final price always depends on the real condition and layout of the roof.

Using the Calculator Before Booking a Roof Inspection

You can use the garage roof cost calculator before you arrange a visit, before sending photos, or before asking for a full quote. It is there to help you understand the likely price range at an early stage, especially if you are still deciding what to do.

This can save time for both of us. You get a clearer idea of the likely cost, and I can speak to you more directly about the roof once you already know the rough budget involved. If the estimate is much higher than you expected, you can plan ahead. If it is close to your budget, you can contact me and ask what information I need next.

In many cases, photos are enough for me to give a better idea before arranging anything further. Clear photos of the whole garage roof, the edges, the existing covering, any visible cracks, any water pooling and the access around the garage can all help me understand the job better.

If the roof is actively leaking, I may need to know how long it has been leaking, where the water is showing inside, and whether the timber feels soft or damaged. The more accurate the information, the easier it is to judge whether a repair is realistic or whether replacement is the better option.

Garage Roof Repair or Full Replacement?

One of the biggest questions homeowners have is whether a garage roof can be repaired or whether it needs replacing completely. The honest answer is that it depends on the condition of the roof. A small isolated problem may be repairable, but an old roof with widespread cracking, water pooling, failed edges or soft decking may not be worth patching again and again.

A repair can sometimes make sense if the roof is generally in good condition and the leak is coming from one clear area. However, if the roof covering is already near the end of its life, a repair may only delay the problem for a short time. In that situation, spending money on repeated repairs can become more expensive than replacing the roof properly.

The calculator is useful because it helps you compare the likely cost of the work before making that decision. If the estimated replacement price is within your budget, it may be worth looking at a longer-term solution instead of trying to keep an old roof going for another season.

I prefer to be straightforward about this. If a repair is sensible, I will say so. If I think the garage roof is too far gone and replacement is the better option, I will explain why. The calculator simply gives you a starting point before that conversation.

Why I Created This Garage Roof Cost Calculator

I created this calculator because many homeowners want clear information before they are ready to speak to a roofer. Roofing prices can feel confusing when you are only trying to plan ahead, and not everyone wants to request a full quote straight away.

With garage roofs, the first question is often very simple: “How much is this likely to cost?” The calculator helps answer that question in a practical way. It will not inspect the roof for you, and it cannot see hidden damage, but it can give you a useful estimated price based on the basic details you provide.

My aim is to make the process easier and more transparent. You can check the cost, decide whether the work is realistic for your budget, and then contact me if you want to take the next step. There is no pressure to book immediately, and there is no need to guess blindly before you know the likely price range.

Get a Garage Roof Estimate Before You Decide

If you are in Brighton, Hove, Portslade, Southwick, Shoreham-by-Sea, Lancing, Sompting, Goring-by-Sea, Ferring, Angmering, Littlehampton or another nearby area, you can use the garage roof cost calculator to get a practical estimate before making a decision.

Whether your garage roof is leaking, ageing, cracked, holding water or simply due for replacement, the calculator gives you a clearer idea of the likely budget. Once you have checked the estimate, you can decide whether to plan the work for later or contact me for the next step.

If the estimated price feels realistic, you can send me the details of your garage roof, along with photos if possible. I can then look at the roof, consider the access and condition, and let you know whether the calculator estimate is close or whether anything else needs to be allowed for.

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