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Verified Pro

Hi tech roofing solutions

0 review(s)
Offers services in KNEBWORTH
Hi tech roofing solutions LTD is your trusted partner for all your roofing needs. With years of experience and a commitmen...
Verified Pro

Skyline Roofing

1 review(s)
Offers services in KNEBWORTH
Small roofing company which take pride in our work we do roof repair fully re roofs all uPVC and fascia guttering repoint ...
Verified Pro

Total roof care

8 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...
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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...
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NH roofing services

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

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:

£3,533

Roofer job Roofer cost in 2025
Velux windows in Knebworth £675-£1,035
Tile or slate roofing in Knebworth £4,250-£22,975
Flat roof in Knebworth £1,219-£8,719
Commercial roofing in Knebworth £1,938-£15,188
Flat roof repair in Knebworth £513-£2,950
Gutter cleaning in Knebworth £63-£308
Tile roof repairs in Knebworth £313-£4,506
Chimney sweeping in Knebworth £75-£115
Roof cleaning in Knebworth £1,480-£2,220
Sun Tunnel in Knebworth £700-£1,000

Related Roofer searches in Knebworth

Roofer FAQs

How to repair flat roof blisters?

Blisters are most common on membrane roofing systems. Lots of contractors will tell you that if there are no signs of further damage, there might not be any need to repair flat roof blisters. They form when pockets of air or water get trapped between layers of the roof’s membrane or between the membrane and the frame. When the sun is out and it heats the pockets expand and stretch the membrane. If you do want to repair your flat roof blisters, there are a few ways to go about it.

If you have a membrane flat roof, cut away the membrane until you reach a place where the membrane is still stuck tightly to the roof. Reapply as many new membrane layers as you cut away over the blistered area. You might even need to do more. To make sure your patch remains watertight, you’ll need to leave at least 6 inches around the edges of the blister.

If you’ve got a felt roof, you can cut an X shape through the blister. Peel back the triangles that you’ve made and let the timber frame dry for a while (so don’t do this when rain is forecast!). Then, coat the area with lots of bitumen adhesive and leave it to dry until it feels tacky. Then press down the triangles of felt firmly into the adhesive.

After that, you’ll need to add more bitumen adhesive to the cuts you made. If you’ve got any spare roofing felt, cut a square that’s about 100mm bigger than the cuts then lay this over the adhesive. If you’ve not got any felt, it’s cheaper to use a self-adhesive flashing strip. Once you’ve laid the strip or patch over, seal the edges with more bitumen adhesive.

How much are Velux windows?

Velux windows are a great way to add lots of light to your loft space. Velux is actually the name of a brand of roof window – not to be confused with roof lights, which are usually installed on flat roofs, or skylights, which are normally used to add natural light into a room without being able to open it. Roof windows open like regular windows and are fitted within your roof. But how much are Velux windows? Whether you choose a Velux window or another brand of roof window, they’re not cheap. Since they require special installation, including cutting roof timbers and replacing them to keep the structure strong enough, they take longer to install than a normal double glazed window. It can take up to a day to install a large Velux window, and it could set you back anywhere between £1,600 and £2,000. If you only need a small roof window in an area like a bathroom, you can expect to pay up to £1,300 for it to be fitted. Usually, there won’t be any need for scaffolding or towers because Velux windows are designed to be installed from the inside of your home. However, it’s worth setting aside an additional £500 in your budget in case unexpected problems occur and an installer needs to get on your roof to finish fitting the window. All of these prices are based on a standard roof window without any additional features. If you want to be able to control your windows with an electric switch or remote, this could set you back as much as an additional £400. For extra-low energy glass, you can expect to pay up to £200 more.

What size Sun Tunnel do I need for my room?

Most Sun Tunnel Kits are available in sizes from 250mm Diameter to 550mm Diameter. This gives you a good range to choose from depending on the size of the room you are trying to brighten.

 

  • 250mm Sun Tube – Perfect for room sizes up to 10m2. (Hallways, Small Bathrooms)
  • 350 – 450mm Sun Tubes – Perfect for rooms 10 to 15m2. Larger Hallways, Stairwells and Bathrooms.
  • 550mm Sun Tube – Ideal for rooms 15 – 22m2. Kitchens, Bedrooms, Living Rooms.
How to repair a fibreglass flat roof?

Fibreglass, or GRP, flat roofs are very durable and should last you years, but over time they can become brittle and you might see some cracks or holes forming. Luckily, you can repair a fibreglass flat roof and it doesn’t have to be too difficult. Cracks in a fibreglass flat roof If you notice long cracks in your fibreglass roof, you can often use a fibreglass crack sealant. Simply clean the area, squeeze the sealant into the crack, then smooth it off. If you want it to look neater, you could coat the entire roof with a restorative coating which will make it look new again. Hole in a fibreglass roof If you notice a hole in your fibreglass flat roof, you’ll want to get this repaired as soon as possible to avoid any rainwater getting into your home. There are lots of fibreglass roof hole repair kits on the market, both online and in DIY stores, so you shouldn’t have trouble picking one up. They usually contain a mouldable UV cured patch that you can stick onto the hole. It will harden and become instantly weatherproof, so is the perfect emergency repair solution. Fixing pin holes in a fibreglass flat roof Unfortunately, if you find pin holes in a fibreglass flat roof it’s often because the installer didn’t use enough resin during the fibreglassing process. Luckily, if you can’t get back in touch with the installer or you only notice after a few years, you can fix this yourself. Sand down the roof back to the clear resin layer. Clean the entire roof with acetone and reapply some GRP roofing resin. Ensure that all the pinholes are filled – you might need two coats.

What is the Velux Active home kit?

Velux installers offer the Velux Active home kit. This provides an automated system to enhance your indoor living. With its sensor-based ventilation apparatus, the Velux active home kit’s smart sensors repeatedly monitor your home’s temperature, humidity and CO2 levels for its optimum healthy living standards.

Sensor-based ventilation
Velux Active tracks temperature, humidity and CO2-levels, and ventilates to keep your indoor climate nice and healthy.

Automatic heat protection
Velux Active automatically protects your home from excessive heat by closing your Velux Integra blinds, awnings and shutters on hot days.

Set personal preferences
Want to swap your alarm clock for a sunrise or air out while you’re at work? Customise your indoor climate with Velux Active.

Voice-control and smart speaker integration come standard with VELUX ACTIVE with NETATMO, enabling you to draw the shades or open the windows just by asking.

What is a Flat roof repair?

A leaky flat roof is one of those things every home and property owner would rather prefer to avoid. Not only can it be extremely frustrating to deal with, but it can also have a grave impact on the overall integrity and value of your property especially when things are not done properly. Generally, all leaky roofs pose serious problems, however, a leak in a flat roof is even a lot more complicated. Ranging from the quite simple repairs to the incredibly complex fixes, flat roof repair (also known as low slope roof repair) is be seriously problematic and at times, can call for a reconstruction which involves complicated roof insurance as well as an experienced professional support.

 

Flat roof repair consists of many different types. Cap sheet roofs possess layers of material glued together with hot asphalt, including a roll of mineral surface glue using asphalt to the top rather than gravel. The tar and gravel roofs also possess layers of material glued together with the help of hot asphalt, with the use of asphalt on top as well as gravel included in the asphalt. A modified bitumen roof possesses more strength when compared to a cap sheet roof or the conventional tar and gravel roof. This can be 2 or 3 plies, smooth or with a mineral surface, torched on, mopped on or self adhering. What’s more? A TPO roof is a single ply roof which is usually heat welded together. A PVC roof is also a single ply roof that’s heat welded together while an EPDM is a single ply roof that’s glued together. The foam roofs as well as various coatings are incorporated to reflect the sun’s UV rays and also to maintain and seal the roof.

how much is a new flat roof?

How Much Is A New Flat Roof

What is a home without a roof to keep out the elements? Being the first line of defence against intense sun, rain, wind and more, implies they require enough care and attention to keep them in a top condition. Therefore, whether you need a new flat roof or just to replace some tiles, you’d be interested in knowing how much it would cost you to get a new roof before you start making the necessary plans. Here, we’ll give you an idea on the cost of a new flat roof and how you can estimate yours based on your unique requirements.

The size of your roof as well as the material to be used are the two main determinants of any flat roof project’s cost. For instance, a four bedroom detached home’s slate roof will be more expensive than a felted flat roof for a small or standard garage. Generally, in the UK, the average cost for replacing a flat roof will range between £5000 to £6000. However, if you’re on a tight budget and looking for the cheapest possible option, you’ll get a felt flat roof only on a garage at about £1000 to £1500. Meanwhile if you want to replace the entire slate tiles of a large family home, the cost can jump up to a range of £11000 to £13000.

Other factors that plays a key role in the determination of a new flat roof’s cost includes the location, labour as well as materials. For instance, a new flat roof price is likely to be higher in London and the south east than the other regions of the country. Also, labour may cost you around £150 to £250 per worker on a daily basis.

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.

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