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Verified Pro

Total Roof Care

9 review(s)
Offers services in KNEBWORTH
Total Roofing Services - Your Trusted Roof Specialists Hey there! We're total Roofing Services, and we're here to take t...
Verified Pro

All seasons roofing

0 review(s)
Offers services in KNEBWORTH
Hi my name is Steve, We are highly experienced in all aspects of Roofing and provide a polite professional serv...
Verified Pro

Hibbsway

7 review(s)
Offers services in KNEBWORTH
Hibbsway Roofing Services is a well established family business with over 25 years experience in the roofing and property ...
Verified Pro

NH roofing services

1 review(s)
Offers services in KNEBWORTH
Flat roof specialist, other roof work undertaken , from small repairs to full replacements
Verified Pro

Primefix roofcare

1 review(s)
Offers services in KNEBWORTH
We have a reliable honest and highly skilled team of roofers which enables us to offer you one of the most professional an...

Recent Roofer Enquiries

25 Mar

Cleaning | Roof cleaning

Knebworth - SG3

Enquiry from: James H

Start Date: Immediate

Roof clean to remove moss build up End of terrace house with side access, approx area 33 m2

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07 Dec

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: Heidi W

Start Date: Immediate

Quote and diagnosis of leaking concervatory for 22 tovey close london colney ***

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20 Sep

Cleaning | Gutters

Knebworth - SG3

Enquiry from: Trusha H

Start Date: Immediate

Gutter clean and wash. Some cleaning of brickwork near overflow gutters (2 areas).

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24 Feb

Roofing | Flat | Replacement

Knebworth - SG3

Enquiry from: Amanda B

Start Date: Immediate

property type: house, roof type: flat, work description: felt roof repair needed asap on a townhouse and posssibly full roof replacement if needed are you the property owner: owner of the property pr...

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24 Feb

Roofing | Flat | Repair

Knebworth - SG3

Enquiry from: Amanda B

Start Date: Immediate

Property type: House, Roof type: Flat, Work description: town house flat roof. storm damage needs repairing as leaking through into bedrooms from front and side of house

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19 Feb

Roofing | Flat | Repair

Knebworth - SG3

Enquiry from: Amanda B

Start Date: Immediate

Property type: House, Roof type: Flat, Work description: town house flat roof. storm damage needs repairing as leaking through into bedrooms from front and side of house

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19 Feb

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: Amanda B

Start Date: Immediate

to repair a flat roof on a town house which has been damaged by storm and is leaking into bedrooms at front of house

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10 Feb

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: Terence W

Start Date: Immediate

Trusses for house units Dene Street Dorking Surrey need email address to send engs details and contact

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17 Jan

Roofing | Flat | Repair

Knebworth - SG3

Enquiry from: Billy B

Start Date: Immediate

Customer visited the myroofingquotes.co.uk site and submitted an enquiry. Property type: House, Roof type: Flat, Work description: loose tiles moss remval 3 layer felting work required

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16 Jan

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: Mrs M

Start Date: Immediate

A leak in garage roof. State of roof needs checking to see if just a repair is sufficient or new garage roof needed.

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28 Sep

Roofing | Pitched | Replacement (Partial & Full)

Knebworth - SG3

Enquiry from: Ricky S

Start Date: 1 to 3 months

new roof and guttering Homeowner Supplied and fitted Please contact to appoint

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02 Jul

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: Karen C

Start Date: Immediate

Please quote for an Apex roof replacement on a garage measuring 19 feet 4 inches by 9 feet 10 inches.

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21 May

Cleaning | Gutters

Knebworth - SG3

Enquiry from: Mrs D

Start Date: Immediate

gutter clearing Are you the property owner: Owner of the property Property Type: Detached How many bedrooms do you have: 3-4 Rooms

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05 May

Windows | Velux

Knebworth - SG3

Enquiry from: Chris M

Start Date: Immediate

awaiting plans for loft conversion Are you the property owner: Owner of the property Do you require any windows: Dormer Agreed to recieve quotes for selected products: Yes Do you require plumbing ...

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24 Aug

Roofing | Pitched | Repair

Knebworth - SG3

Enquiry from: David G

Start Date: Immediate

Two new build semi-detached cottages. Trusses to be 'room in roof' type for main front ridge, giving as much headroom and storage space as possible, though this won't be living space. I can provide ar...

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28 Feb

Roofing | Flat | Replacement

Knebworth - SG3

Enquiry from: Robert C

Start Date: Immediate

L shaped flat roof repair or replace at approx 20 sqm Are you the property owner: Owner of the property Property Type: Semi detached Location of roof: Extension Height: 1st Floor Property Age: ...

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How much do Roofer services cost?

How much do Roofers cost? Costs for Roofers in 2025 can be very different depending on the kind of work that you want to have actually performed in your residence. It's the question we get asked a great deal "how much do Roofers charge?". It's often very good to have an idea of how much a Roofer are going to likely charge for their assistance. Prices will most likely fluctuate based on the materials and also the tradesman picked. The table shows the kinds of task that Roofers generally do as well as the standard cost series of these tasks. Some projects take longer to complete than others so costs do fluctuate by task.

View our Roofer cost guide View our Roofer advice

The average price
of a Roofer in Knebworth is:

£3,475

Roofer job Roofer cost in 2025
Velux windows in Knebworth £675-£1,035
Tile or slate roofing in Knebworth £4,125-£21,725
Flat roof in Knebworth £1,125-£9,292
Commercial roofing in Knebworth £1,813-£16,438
Flat roof repair in Knebworth £600-£2,267
Gutter cleaning in Knebworth £75-£115
Tile roof repairs in Knebworth £313-£4,506
Chimney sweeping in Knebworth £75-£115
Roof cleaning in Knebworth £940-£2,110
Sun Tunnel in Knebworth £700-£1,000

Related Roofer searches in Knebworth

Roofer FAQs

how to clean algae off roof shingles?

How To Clean Algae Off Roof Shingles

Stains and dirt on asphalt shingles can only make your entire house look shabby which can go a long way to hide away the true value of your building. In some cases, dirts and stains on asphalt roofing shingles are nothing more than a cosmetic issue. However, there are also times in which it goes far beyond this - when the stains are indicators of a problem that if ignored, can result in a serious roof damage and ultimately, roof failure. In most cases, it’s usually hard to distinguish these stains and hence, the more reason why your asphalt roofing shingles should be regularly cleaned and maintained. In this article, we’re going to look at how you can get rid of algae of your roof shingles.

Algae growth on roof usually have either blue, green or black stains. They normally begin with little spots which will develop into streaks overtime. These stains are mostly mistaken for moss or mildew and aren’t harmful to any other thing than the roof shingles. However, the look it gives the entire house is something nobody enjoys.

It should be noted that this is a task that deals with working at height and requires skills and confidence to pull off. If you lack any of these qualities, simply reach out to a professional for help.

✓ Safety first. Put on protective clothing.

✓ Apply a bleach solution with a garden sprayer and let it sit for up to 20 minutes

✓ Rinse the roof thereafter with the stream from the hose (do not use a pressure washer as it can damage the roof shingles)

✓ If there are still algae left after rinsing with water, you can make use of a brush with medium-stiff bristles to gently scrub the stains off. If some stains are still left, simply let the roof dry before repeating the process again.

How to repair a flat roof?

How to repair a flat roof depends on the type of flat roof you have. We’ll talk about how to repair felt, asphalt, fibreglass and EDPM flat roofs yourself. But ultimately if you want the best finish, it’s best to ask a professional to repair your flat roof for you. Repairing a flat roof Whether you’ve got an old pour-and-roll type felt roof or a newer torch-on felt flat roof, you can get cracks, lifting around joints, leaks or dips. As a temporary measure, you can buy a special paint that you paint over cracks. For a more permanent repair, you can add a patch of torched-on felt or add a layer on top. Asphalt flat roof repair As your asphalt flat roof gets older, you may notice blisters, cracks or shrinkage and sagging around flashings. Again, you can use a paint on fix from a tin as a temporary repair, or add heat-applied flashing tape around flashing. For a more permanent fix you can use a liquid system, but many are only available to the trade market. You can also add a patch of torched-on roofing felt over a crack. How to repair a fibreglass (GRP) flat roof Fibreglass flat roofs are usually excellent, but problems can involve leaking flashing and cracks near upstands, trims or board joints. You can add acrylic sealant to cracks or holes for a good DIY repair, but a flashing problem is more difficult to fix. You’ll need to clean and sand the affected area of flashing, then laminate a 600g chopped strand mat into place, cure it and add a topcoat colour to match the roof. That sounds like a job better left to a specialist. EDPM rubber flat roof repair Rubber roofs often suffer from shrinkage when mechanical fixings haven’t been used near upstands, flashing leaks or holes or cuts. If you’ve got a small tear that you want to repair, you can add some lap sealant to the area – but use it sparingly. For a more permanent repair to flashing, buy some self-adhesive flashing that will mould into shape easily. Clean the area you want to repair, add EDPM primer, then stick the patch of flashing on from the centre outwards with a hard roller. You can add lap sealant around the edges if you want more protection from water.

How much does it cost to replace a commercial roof?

There is simply not one single answer when it comes to knowing how much would it cost to replace a commercial roof. Replacement costs is a variable which is dependent on several factors.

If you are looking to take a shot at guessing an estimate, you will first need to understand the what is need for the replacement.

YOUR COMMERCIAL ROOF IS AGEING

The first sign of replacement is definitely the age. Generally, roofs come with a warranty of twenty years. Based on your materials, the real lifespan for a commercial roof tends to be around 15 to 25 years. Depending on the maintenance and the materials, lifespan can be prolonged.

YOUR COMMERCIAL ROOF LOOKS TIRED

Compare your commercial property with other buildings in the area. If it looks pale and worn out in comparison, it is high time for replacement.

WATER DAMAGE

A sturdy roof should be able to withstand extreme weather conditions such as heavy rain or high winds. However, if a storm has caused significant damage to your roof, its structural integrity might be compromised. water damage is one of the most indicative signs for a roof replacement.

CRACKS AND HOLES IN ROOFING MATERIALS

Proper upkeep of the roofing materials is required for it to continue protecting your property. If you find any cracks or holes, bent tiles or sheets, replacing them is advisable.

SAGGING COMMERCIAL ROOF

Roof replacement is critical when your roof suffers from sagging or corrosion. Once sagging or corrosion begins, the structure becomes vulnerable to damage.

Keeping all the above factors in mind, replacing your commercial roof can range from anywhere around £10,900 to £44,000 depending on the materials you choose. Materials are available in the market from £35 to around £75 per square meter. If you chose higher or premium quality materials, price can range from £115 to £200 per square meter.

Can I set up a sun tunnel myself?

It is constantly important to consider your skill degree as well as your physical capacity when picking to tackle a Do It Yourself task. Generally, sun tunnel setup is not made to be tried by anybody without experience and training for the following reasons:

  • You will likely need professional devices which may include scaffolding.
  • It is really unsafe to deal with a roofing as a result of the danger of falling.
  • Your sun tunnel have to be appropriately secured to avoid leaks as well as drafts coming through your roofing.
  • This installment is not a straightforward, easy job. It involves eliminating roofing ceramic tiles, attaching a panel, thoroughly installing the passage and also even more.
How much does it cost to replace a commercial flat roof?
If your commercial flat roof needs replacing, how much it costs will depend on how big the roof is and what you want it to be made from. Lots of commercial flat roofs are made from felt or asphalt, but people are also beginning to turn to materials like EDPM rubber and fibreglass. Flat roofs can last a long time, but if it’s been 20 years or more since you had it replaced or inspected, it might be time for a new one. If a roofer inspects it and finds lifting, flashing problems, sagging or lots of blisters, it’s probably time to replace your flat commercial roof. So how much does it cost to replace your commercial flat roof? The average cost is around £4,500, but it could be much less or much more. It depends on how big your roof is and what material you choose. Felt is the cheapest material you can use for your commercial flat roof, at around £40-70 per metre squared, while a lead bay roof will cost the most at £90-110 per square metre. EDPM rubber and fibreglass roofs are being used more and more because they’re so durable, and they will cost between £80 and £110 per square metre. It might be worth spending a little more upfront to get a stronger and longer-lasting commercial flat roof.

how much does it cost to have roof cleaned?

How Much Does It Cost To Have Roof Cleaned?

If your roof is dirty, it’s highly recommended that you have it cleaned by a reliable and professional roof cleaning contractor who specializes in cleaning of all types of roofs rather than making it a DIY project or hiring an odd job man who is a jack of all trades. This is due to fact that major mistakes like incorporating inappropriate cleaning agents, pressure as well as wrong cleaning techniques can have a serious negative impact on your home while also putting in mind the several dangers that comes with working at height. However, when hiring a professional roof cleaning person or company, do make sure that the cleaner is fully insured, possesses the relevant training working at height and has the ability to operate access machinery. In other words, when it comes to roof cleaning where safety is the first priority, it shouldn’t always be about the price of the job but the quality of the service you’re going to receive.

There are several variables that determines the cost of cleaning a roof and these includes both the type of the roof in question as well as the size of the house. Let’s take a look!

✓ For a small semi detached or terraced house with a standard front and rear elevation with no side hips, the average cost of cleaning the roof usually starts from £390 and above.

✓ For a semi detached or detached house which is a free standing residential building, the average cost of cleaning the roof usually starts from £490 and above.

✓ For a averaged sized detached house which is a stand alone property, the average cost of cleaning the roof usually starts from £590 and above.

✓ For a large detached house featuring several additional roofs including a porch, double garage and even an extension, the average cost of cleaning the roof usually starts from £790 and above.

what is the average cost to replace a flat roof?

What Is The Average Cost To Replace A Flat Roof?

Are you interested in knowing how much it costs to replace a flat roof? Here, you’ll discover a price breakdown for replacing flat roof. This includes a number of price determining factors such as materials costs as well as cost of labour and cost per square metre. All these enables you to make easy calculations so that you can determine a flat roof replacement estimate for your own project.

The type of flat roof that is the most common type is the garage roof and for the replacement of a single garage roof, the cost will fall between the range of £700 to £1000. Meanwhile for a double garage, you should expect a price increase of about 40 percent to 50 percent. The main price determinant that’s affecting the price of a new flat roof is the material incorporated in making it. For instance, lead or fibreglass are much more expensive when compared to felt roofs.

Generally, the cost of a flat roof replacement will fall within the range of £700 to £1300 varying largely due to the type of materials to be used by the roofer, the roof’s size as well as whether or not scaffolding would be used. Multiple flat roof applications also comes with different costs which includes:

• Felt roof ( £40 to £60 per square metre).

• Fibreglass roof ( £70to £90 per square metre ).

• Rubber roof ( £80 to £85 per square metre ).

• Lead bay roof ( £90 to £105 per square metre ).

• Fibreglass bay roof ( £40 to £60 per square metre ).

Several professional roofers work in pairs and to hire them you’re likely to be charged between £200 to £300 per day. The project can be completed with just a day’s work, but the installer should be back to make sure there are no leaks.

how often to sweep chimney on a wood burner

Chimneys are certainly on top of the commonly overlooked features when it comes to cleaning a house. This is quite understandable given the fact that they’re not readily accessible and not in plain sight, hence, home and property owners tend to overlook the relevance of any chimney cleaning effort. But this can be a grave mistake! The importance of having your chimney swept on a regular basis cannot be over emphasized and even more so if it happens to be on a wood burner. Not only can a dirty chimney constitute fire hazard, but when left uncleaned it can also give rise to blockages which can lead to carbon monoxide poisoning. In fact, from 2014 to 2018, one of the top factors contributing to about 25% of home heating fires is due to lack of cleaning, mainly from solid-fueled heating equipment, mostly chimneys. Therefore, sweeping your chimney regularly is a safety precaution and when they happen to be on a wood burner, this exercise becomes a lot more important. With that in mind, the question that arises is just how often is sweeping of a chimney on a would burner needed?

 

Well, it’s strongly advisable to sweep chimney on a wood burner at least twice a year by a qualified professional depending on the usage. If you happen to own an oil burning fireplace, the same also applies. In other words, this means that regardless of the type of chimney you possess, the cleaning must be done regularly. However, most chimney would only need to be swept once in a year by a qualified professional.

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