How do I know if I need a new roof?

Posted on 25 April 2022

“How do I know if I need a new roof?” is a very common question, particularly as most people don’t check this part of their home every day. If you’re worried that your roof has reached the end of its life, read on. Here are the biggest signs that your roof needs replacing. 

6 signs your roof needs replacing 

You might assume that your roof takes care of itself over the years, protecting your home from the effects of the Great British weather. However, your roof actually requires regular maintenance to keep it in optimal condition. If minor damage isn’t fixed quickly, it can result in your roofing system failing completely. Keep reading to find out the biggest signs you need a new roof.

Water damageHow do I know if I need a new roof

Water damage is often ignored by homeowners, however, this is a big mistake. Whilst you might assume that damp patches upstairs are simply a result of damp or that watermarks and mildew have come from the window after a recent downpour, they may be due to water seeping in from your roof. Water damage is often one of the biggest signs that your roof needs replacing. As soon as you begin noticing damp or watermarks, call a roofing company right away.


Whilst a small amount of moss on your roof can often be harmless, in some cases it can force the tiles apart, creating a gap that can let in water. Moss typically grows within the cracks in between the shingles. As it grows thicker, it can lift and loosen the shingles, allowing water to leak through. Check your roof for signs of mould, moss, or mildew and deal with it as soon as possible. If you don’t, damage can occur that’s difficult to repair and you may find yourself needing a whole new roof.

Outside light is visible 

When people ask us “How do I know if I need a new roof?”, we always tell them to check if outside light is visible. If after turning out the lights upstairs you can see light coming in through your roof, this is a good sign that there are cracks and holes present. Whilst they can sometimes be fixed by a competent roofer, often an entire roof replacement will be necessary. If you’ve noticed light coming through your roof, call us as soon as possible.

Loose tiles 

Tiles can sometimes become loose on a roof. Whilst a few loose or missing tiles can often be fixed, you should consider replacing the roof if there are many more than this. A roof that has too many broken or missing tiles won’t just leak but it can even fall in on you in the worst cases. Book a roof check and find out if any of the tiles are loose.   


Sagging, which happens where there’s a sag in the middle of the roof, can sometimes indicate that there’s structural damage and that it is in damager of collapsing. The cause is often water damage from rain and snow. Sometimes, design flaws, substandard materials, or poor quality installation are to blame. 

Whilst a little sagging doesn’t always mean your roof is in immediate danger of collapse, it does mean that you need to act quickly to save the structure. Sometimes, a sagging roof can be repaired. Hire an experienced roofer to assess the roof and determine the cause of the sag. They can then take steps to correct it, if possible.  


How do I know if I need a new roofYour roof is more than 20 years old 

If your roof is more than 20 years old, you’re right to wonder if it needs replacing. Since the average lifespan of a roof is 30 years, carrying out repairs to a roof of this age is often a waste of time and money. You may repair one problem only to realise that more repairs are required soon after. The costs of repairs to your roof can quickly begin to mount up. If you have an ageing roof, you should seriously consider having it replaced. Raven Roofing and Repairs is the leading company for new roofs in Grimsby, so don’t hesitate to get in touch to discuss your requirements with the team.

Arrange an annual roof check

An annual roof check can help to identify any problems before they get worse, sometimes removing the need for a full roof replacement. Not only can it give you peace of mind that your property is protected and dry but it can save you money in the long run. Annual roof checks are vital if you want to avoid the hassle and expense of a new roof.  

New roofs in Grimsby 

If the time has come to install a new roof, look no further than Raven Roofing and Repairs. We’ve been installing new roofs in Grimsby and the surrounding areas for over 20 years, building a fantastic reputation throughout the area. Investing in a new roof for your home is a big decision, but it’s one you can make with confidence when you hire our services. Using the best methods and techniques and top quality materials, you can expect us to carry out our work to the highest possible standards.  

Contact us 

Now you know the answer to the question “How do I know if I need a new roof?”, you may be looking for a local roofing company. At Raven Roofing and Repairs, we’re on hand to assist you with all your roofing needs. Call us on 01472 565 084 (Grimsby) or 01507 640 072 (Louth) to discuss your requirements with one of our friendly team. You can also request a callback via the website if you prefer and we’ll get back to you right away.

Customer Reviews
Raven Roofing & Repairs Ltd
Based on 39 reviews
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Shawn Bosworth
Chris and his apprentice were brilliant! Came out in the miserable rain and made my roof water tight again. I had several quotes from other roofers, cowboys trying to milk my desperation for silly money. Chris was honest, fair and reasonably priced. Highly recommended, thanks!
mark appleby
Extremely Happy with Job!Chris, Quickly assessed the roof and gave options on what could be done.Once Date Agreed, delivered on time with a very professional looking job. Job was in Feb and Chris and Team went out of their way to get the job done even though weather was bad at end of week. They left Work area very clean. Highly reccomend them!
Bev Barley
Thanks for doing a first class job would highly recommend Chris for a job well done
Robert Meadows
Mike Downs
Fantastic, would recommend to anyone who needs roof work. Polite, helpful and super fast. Thanks so much.
Lisa McMahon
Had a leak from my roof. Chris came out the same day althoughthe weather wasn't good. He surveyed the roof and found the problem immediately (a tile had slipped), took photo's before and after replacing the slipped tile. I asked how much I owed him - he said there was NO charge as it was a quick repair. What a lovely, kind, genuine guy! Would highly recommended him and his company.
Roland Packer
We recently had the roof on our extension replaced by raven roofing. Chris and his young helper couldn't have been more helpful. Work done to a very high standard. Quote honoured to the penny. Genuinely nice people and a real pleasure to do business with. Will definitely call them for the services they offer, when needed.
Michelle Packer
Can’t recommend this company enough. Did a great job on our roof , very friendly team , punctual, good quality work and good value for money . Many thanks
Carol Howden
Very friendly team and carried out a great job. Arrived and just got on with the job. Looks great
andrew engeham
Competitive price and excellent workmanship.Highly recommended.
Keith Brown
Great company great service
John Hornsby
Came on time very Satisfied with wat was done. Will be using them again if needed
Omer Khalifa
renegade jokerrr
Fantastic service! Nice and friendly guys! Very quick work! Great customer service! If I need any repairs in the future i will use Raven again.
Margaret Dabb
After being let down by another firm i rang Chris in desperation. Within an hour he arrived, looked at work, discussed, priced and booked a date. Arrived on time, everything ran like clockwork even in the awful heat they had to work through. Very well organised, very tidy, would have no hesitation in recommending his work. Many thanks
Zoe Gibbons
Can’t recommend Chris and his team more, they were all friendly, polite and efficient and left my patio tidier than it was before! Nothing was too much trouble and good quality work and price. I’d definitely recommend Raven Roofing to all my friends and family.
Alan Grosschmidt
Would Recommend Raven Roofing.We had new gutters and facias fitted all round the house.We were really pleased with the completed job.I did point out a minor oversight, which Chris promptly dealt with.The quote for the job was very competitive and I doubt you could get it done cheaper.So deserves 5 Stars.
Andrea Goforth
Was very happy with the prompt, professional, and friendly service provided by this company . They were so quick to help me out and repair a badly storm damaged roof. It is such a joy to have a service provider come when they say they will! Reasonable price and good quality workmanship too . Thank you, Raven Roofing .
We had the tiles down the gulley re-bedded.Very professional and cleaned up afterwards. Really friendly and very kind guy and we will definitely be using Raven Roofing again in the new year to do our guttering! Thanks Chris 👍🏻
Mike Prior
they repaired a dislodged tile free of charge. Just asked To be remembered for other works and telling my friends
Sally Melton
Had a skylight fitted. Excellent service, fitted my job in even though extremely busy. Was absolutely delighted the attention to detail was perfect. Made sure everything was tidied up and taken away. Thank you again. Would highly recommend.
Ali Wickham
Peter Hogarth
These guys did a great job repointing my roof gulleys
Pamela Blow
Samantha Blow
Excellent service, I would highly recommend :)
Derek Coates
Chris promptly repaired the front guttering which is now ok.
Lee Popham
Rang raven to come and fix my roof after last months storm, came next day and repaired, very happy with service and price, will definitely use again.
Mark Barnard
Very good reliable service all work guaranteed
kevin langley
When we needed urgent roof repairs, Raven Roofing & Repairs came to the rescue. Great quality work undertaken by true professionals.
Steve Nowell
I recently had repairs done to my roof. The response and service were excellent, nothing was too much trouble and the work carried out effectively and efficiently
Kelly Brewer
Excellent service, recently had repairs carried out on my house roof, Chris was really friendly, work carried out to a great standard at a great price 🙂
We have used Raven Roofing several times for small repairs as we didn't want to go to the expense of a new roof, but recent torrential rain forced us to accept we needed a new roof. We were dreading the bill but Raven Roofing were very reasonable (not sure if I'm allowed to say how much).The scaffolding arrived and was put up promptly, Raven Roofing arriving a couple of days later to start work, the only delays were due to bad weather and Raven Roofing contacted us to let us know about any delays which we really liked, usually builders don't bother. Raven roofing were polite, friendly and courteous at all times.Out roof was completely stripped and replaced in a week, all rubbish was removed and the gardens left looking tidy.The roof itself looks fantastic...we are very very pleased and highly recommend Raven Roofing.