New Flat Roof in Welwyn Garden City

Get New Flat Roof Prices in Welwyn Garden City

Home > Roofing Projects > Flat roof > Welwyn Garden City

New Flat Roof in Welwyn Garden City

Do you have a flat roof that would need restoring within Welwyn Garden City or perhaps you are looking at transforming your existing roof into a flat design. No matter your needs, ensure that you use our quick and simple quote service to get the very best prices for the work you would like.

Pitched roofs have always been commonly seen around the country, but now it seems the flat roof is growing in popularity. There are numerous significant reasons for this as well, including the simple fact they're less costly to have built and are far better for energy efficiency, saving you money on energy costs.

What's more, the flat roof is fantastic for being resilient to the flippant climate conditions the UK is notorious for. The style of roofing can be combined with nearly any kind of material too, depending on your needs and current property.

If a flat roof seems like something you could benefit from, why don't you assess quotes using our easy and quick online service. We'll match your details with respected roof firms in Welwyn Garden City who can visit your property and provide a free quote for the work.

The work itself can take several weeks to complete, all depending on the size of your home. Of course, if it's a restoration job this may take significantly less time.

Average Flat roof cost in Welwyn Garden City

The common cost of Flat roof is £2500. Costs fluctuate based upon the materials and the firm chosen. The upper price range can be as high as £2875. The material costs are quite often about £625

Average price per Flat roof job in 2026

Avg. price low

Avg. price low
£1,597

Avg. price

Avg. price
£9,950

Avg. price high

Avg. price high
£18,268

£18800

£14100

£9400

£4700

£0

Prices based on actual Flat roof costs for Welwyn Garden City, as reported by local LeadsDoWork members.

Flat roof installation cost in Welwyn Garden City 2026

Labour cost £1,750
Material cost £625
Waste removal £125
Time frame: 3-8 days

Flat roof searches in June 2026

Flat roof Projects in Welwyn Garden City in May 2026

1,825

Requests for quotations in Welwyn Garden City in May 2026

7

Requests for Flat roof quotations in Welwyn Garden City in May 2026. -22% change from April 2026.

70

Requests for Flat roof quotations in Hertfordshire in May 2026. -22% change from April 2026.

We noted 1,825 requests for home quotations within Welwyn Garden City. Of these quote requests the number of flat roof quotations in Welwyn Garden City was 7. Quotatis would have been able to match these consumers with up to four suitable installers who were available for work within Welwyn Garden City during that time. Request a free house survey from trustworthy companies in Welwyn Garden City.

Source: Numbers calculated based on the search volumes in major search engines

Flat roof searches in cities and towns near Welwyn Garden City May 2026

23

Requests for quotations in St Albans in May 2026

10

Requests for quotations in Harpenden in May 2026

7

Requests for quotations in Welwyn Garden City in May 2026

5

Requests for quotations in Hatfield in May 2026

1

Requests for quotations in Welwyn in May 2026

Welwyn Garden City

Welwyn Garden City is a town within the Welwyn Hatfield borough of Hertfordshire. It is unique as both a garden city and also a new town, having a population of 43,252, and it's located just twenty miles from London within East England. With its traditional importance, Welwyn Garden City appeals to many visitors through the year. For the ideal price for the next project compare quotes from vetted companies in Welwyn and make sure a high quality finish for the work you'd like finished.

Latest Flat roof completed projects

  • Completed Flat roofproject picture by Primoplastics and Roofing
  • Completed Flat roofproject picture by Adequate roof care limited
  • Looking for Flat roof in Welwyn Garden City?

    Get free quotes from local roofers

    Get free quotes

    Flat roof pros in Welwyn Garden City

    Mark Dean t/a Everlast Roofing

    87 review(s)
    Based: in Chessington, KT9 1UE

    Everlast Roofing are a trusted, professional family company with over 22 years experience in the trade. We focus on providing all types of roofing repairs and maintenance to the highest finish, and with a quality that is made to last. We are based...

    Latest review

    Graham C., GU16
    5

    Roofing | Flat | Replacement in Camberley

    Professional , hard working, friendly & reliable . Great job at a good price.

    NH roofing services

    12 review(s)
    Based: in Doncaster, DN8 4QA

    Flat roof specialist, other roof work undertaken , from small repairs to full replacements

    Latest review

    Graham B., GL15
    5

    Roofing | Flat | Replacement in Blakeney, Lydney

    Nathan and Grez were great. Hadn’t realised how far they had to travel but they were bang on time, just worked really ...

    Excel Roofing & Asbestos LTD

    18 review(s)
    Based: in Loughborough, LE11 5DA

    Excel Roofing are a friendly and professional roofing company, based in Luton and offer a quality roofing service. We serve all of Bedfordshire, Hertfordshire and Buckinghamshire.

    Latest review

    Phil R., LU7
    5

    Roofing | Flat | Replacement in Leighton Buzzard

    Excellent.A company that really knows what it is doing and does it very well.

    Done Well Contractors

    128 review(s)
    Based: in Reading, RG2 9PP

    At Donewell Contractors we are a family run business that provides a professional services with personal Care. we aim to give you quality and value that you the customer deserve. With over 25 years' experience and having full liability and emplo...

    Latest review

    Julie C., UB6
    4

    Roofing | Flat | Replacement in Greenford

    Very friendly, but a bit pricey.

    Rooftop Roofing Ltd

    47 review(s)
    Based: in Weybridge, KT13 8RN

    Based in Wokingham, we are available across Berkshire,Buckinghamshire, and further afield. Rooftop Roofing are an experienced team of roofers who can help with all of your needs, whether it be a new roof, a refurbishment, moss removal or guttering. ...

    Latest review

    Lynne N., GU47
    3

    Roofing | Flat | Replacement in Sandhurst

    Rang very quickly, pleasant on the phone, arranged to meet and then did not show up and no contact since.

    Royal Roofing Services

    7 review(s)
    Based: in Bushey, WD23 2GB

    Looking for a trusted, professional roofing contractor Maybe you require a free, no-obligation quote on a job that needs attention? Or perhaps you’d like some work completed

    Latest review

    Caroline W., WD5
    5

    Roofing | Flat | Replacement in Abbots Langley

    James and his team did a good job with our old breeze block garden shed. We wanted a new felt flat roof installed but sa...

    Advanced Roofing Solutions LTD

    1 review(s)
    Based: in Slough, SL2 4LF

    Advanced Roofing Solutions Ltd has been installing BBA approved Topseal GRP fibreglass roof coverings and cold applied resin roofing systems since 2006. With more than 10 years experience specialising solely in the installation of resin roofing sy...

    Latest review

    Debi W., UB4
    4

    Roofing | Flat | Replacement in Hayes

    For a fibre glass roof so expensive

    Adequate roof care limited

    1 review(s)
    Based: in Windsor, SL4 1PD

    Welcome to Adequate Roof Care Ltd, your trusted choice for exceptional roofing services in Windsor, High Wycombe, Reading and surrounding areas. Founded in 2020, we have established ourselves as the region’s most reliable roofing service provider. ...

    Latest review

    David H., TW3
    5

    Roofing | Flat | Replacement in Hounslow

    Very professional. They did a great job and completed the work on time. Would definitely recommend them.

    ELT Landscapes Ltd

    14 review(s)
    Based: in Cambridge, CB24 9PW

    ELT Roofing are thoroughly experienced, comprehensive roofing specialists who provide every aspect of roofig to residential and commercial properties in Cambridgeshire.

    Latest review

    Serena F., CB1
    4

    Roofing | Flat | Replacement in Cambridge

    Only one company called me instead of the advertised number of 4 quotes. ELT Roofing was prompt in contact but the proj...

    London Counties Roofing

    6 review(s)
    Based: in Middlesex, HA0 2QN

    ALL OUR WORK COMES WITH A 15 YEAR GUARANTEE WITH WRITTEN QUOTE AND NO DEPOSIT UNTIL ALL WORK IS COMPLETED.VISIT OUR WEBSITE ON LONDONCOUNTIESROOFING.COM FOR INFORMATION ON ALL OUR ROOFING SERVICES.

    Latest review

    Takashi T., HA9
    5

    Roofing | Flat | Replacement in Wembley

    Very good price, but one company is better price.

    Similar Customer Enquiries for Flat roof in Welwyn Garden City

    23 Sep

    Roofing | Flat | Replacement

    Welwyn Garden City - AL7

    Enquiry from: Daniela H

    Start Date: Immediate

    customer made an enquiry for flat roof replacement and confirmed on the local quotes site they would like quotes from a roofer.mrs lives in the welwyn garden city area and would like a call to discuss...

    Post a similar request >

    13 Oct

    Roofing | Flat | Replacement

    Welwyn Garden City - AL7

    Enquiry from: Jason O

    Start Date: Immediate

    Box type galvanised roofing sheets juniper green to cover 5.5 metres X 3.5 metres to include 100 fitting screws and 3.5 metres 90 degree 240mm X 240mm finishing boards with delivery by/on Monday 22 Oc...

    Post a similar request >

    13 Nov

    Roofing | Flat | Replacement

    Welwyn Garden City - AL7

    Enquiry from: Oliver L

    Start Date: Immediate

    I'mbuying the property at the address listed. Have been told the garage needs a new roof. Roughly 11' square flat asphalt style roof. Location of roof: Garage Property Type: Terrace Current Roof Mater...

    Post a similar request >

    10 Apr

    Roofing | Flat | Replacement

    Welwyn Garden - AL8

    Enquiry from: Alun M

    Start Date: Immediate

    We need to replace a front door porch urgently. Please contact.

    Post a similar request >

    24 Mar

    Roofing | Flat | Replacement

    Welwyn Garden City - AL7

    Enquiry from: Rhea E

    Start Date: Immediate

    flat ROOF Homeowner Supplied and fitted Please contact to appoint

    Post a similar request >

    04 Feb

    Roofing | Flat | Replacement

    Welwyn Garden - AL8

    Enquiry from: N

    Start Date: Immediate

    Felt roof replacement

    Post a similar request >

    01 Sep

    Roofing | Flat | Replacement

    Welwyn Garden City - AL7

    Enquiry from: Clive F

    Start Date: Immediate

    tar sheet flat roof on garage ~ 3m x 6m leaking. Check whether Ply and a couple of the beams need replacing. Remove & dispose old sheets.

    Post a similar request >

    28 Apr

    Roofing | Flat | Replacement

    London - N2

    Enquiry from: Christopher H

    Start Date: Immediate

    flat roof covering replaced 5x3.*** floor

    Post a similar request >

    06 Apr

    Roofing | Flat | Replacement

    London - E4

    Enquiry from: Paul H

    Start Date: Immediate

    New flat roof. Quotes needed for roof replacement.

    Post a similar request >

    20 Mar

    Roofing | Flat | Replacement

    London - NW7

    Enquiry from: John R

    Start Date: Immediate

    I need to replace the roof of a garden shed. The shed is 3.15m x 2.11m. The shed has a old corrugated pvc roof with many holes and splits. I'd like to replace it with twinwall polycarbonate sheeting.

    Post a similar request >

    22 Feb

    Roofing | Flat | Replacement

    Stanmore - HA7

    Enquiry from: Mark Anthony B

    Start Date: Immediate

    310 flat roof top coat + aris rail

    Post a similar request >

    11 Feb

    Roofing | Flat | Replacement

    London - E4

    Enquiry from: Rogelio O

    Start Date: Immediate

    Felt replacement

    Post a similar request >

    29 Oct

    Roofing | Flat | Replacement

    London - NW9

    Enquiry from: CHRISTINA A

    Start Date: Immediate

    To install a corrugated bitumen roof to a lean-to garage measuring 8.4 m by 2.65 m.

    Post a similar request >

    27 Feb

    Roofing | Flat | Replacement

    London - N22

    Enquiry from: Dimitris B

    Start Date: Immediate

    Hi. We have a detached garage that the roof needs replacing. Can you give us a quote please? It's about 5mx3m. Can send you some photos if needed. Thanks

    Post a similar request >

    07 Nov

    Roofing | Flat | Replacement

    London - N3

    Enquiry from: Patricia V

    Start Date: Immediate

    renewing large flat roof are you the property owner: owner of the property property type: semi detached location of roof: extension height: 1st floor property age: 1970-2000 current roof material: o...

    Post a similar request >

    14 Oct

    Roofing | Flat | Replacement

    London - NW4

    Enquiry from: Alireza A

    Start Date: Immediate

    I have a 30-square-meter loft with decent ceiling height that I want to convert into a one-bedroom, one-bathroom layout. I'd like to know the estimated cost, the materials required, and the expected t...

    Post a similar request >

    27 Sep

    Roofing | Flat | Replacement

    London - NW4

    Enquiry from: Alireza A

    Start Date: Immediate

    I have a 30-square-meter loft with decent ceiling height that I want to convert into a one-bedroom, one-bathroom layout. I'd like to know the estimated cost, the materials required, and the expected t...

    Post a similar request >

    13 Sep

    Roofing | Flat | Replacement

    London - NW7

    Enquiry from: Niky P

    Start Date: Immediate

    Flat roof on lean to needs replacing.

    Post a similar request >

    13 Jul

    Roofing | Flat | Replacement

    London - N11

    Enquiry from: Obaid S

    Start Date: Immediate

    Hi there. Hope you are well. I was hoping to get a quote from you to replace my old worn and leaky flat felt roof over the rear garage extension which measures approximately 6m long and 2.5m wide.

    Post a similar request >

    03 Apr

    Roofing | Flat | Replacement

    London - NW4

    Enquiry from: Daiva K

    Start Date: Immediate

    The whole roof, including loft flat roof, need replacing. Also 2 skylight windows need to be replaced.

    Post a similar request >

    Local & reliable roofers near me

    Tell us about your flat roof project

    Answer a few quick questions, so we can match you with local roofers who can help.

    Find up to 4 roofers in Welwyn Garden City

    Get free, no-obligation local flat roof quotes from 4 verified roofers working in Welwyn Garden City.

    Hire with confidence

    Compare customer reviews, services and prices, and choose the right tradesperson for you.

    Our reviews

    Average

    Would highly recommend

    Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

    Good easy way to find a selection of…

    Good easy way to find a selection of trades you need all in one place.

    Love Local Quotes it's a big part of my …

    Love Local Quotes it's a big part of my Business I would recommend to anyone

    FAQs

    how to replace flat roof fascia?

    How To Replace Flat Roof Fascia

    Whatever makes you decide to install your flat roof fascia by yourself and not a professional company, then you must have a clear idea of what to do and do it appropriately. If you lack proper training and experience, we’d recommend you employ a reliable professional to help with the task for the best results and save you some time and money. This step-by-step guide will give a clear insight on how to go about the replacement of your flat roof fascia.

    The tools to be incorporated includes the fascia boards, table saw, plane, crimper, clamps, power nailer, compound saw and chalkline.

    • Prepare and get all the necessary tools to complete the task before commencing as this would save you time from stopping and going back and forth looking for the next tool needed,

    • Install the sheathing and board.

    • Fix white fascias with at least 600mm centres ( a foiled fascia needs just 40mm centre) using a marine grade stainless steel plastic headed nails.

    • Make a space of up to 10mm between the joints for possible building expansion, using super glue to secure the joints to just a side of the fascia.

    • Place this directly on the fascia board’s top (if you’ll be installing ventilation) to create an air pathway.

    • Take note that the type of roof to be installed will determine how you’ll have to install the fascia board. For instance, a hip roof permits you to attach the fascia board onto the roof in a quick fashion, whereas a gabled roof may need you to make markings on the board to achieve the right fit.

    • Consider the depth of the fascia board as it also play a huge role in the installation of the fascia board. For instance, there’ll be additional weights on tiled roofs that will push up against the board. Therefore, if you do not get the appropriate amount of depth, it could eventually collapse.

    how much to replace a flat roof?

    How Much To Replace A Flat Roof

    There’s no straight answer to this question. However, the average cost lies within the range of £1000 to £5000. This range may look too wide but the price is greatly influenced by a number of factors which is capable of making the price increase or decrease. Some of the factors affecting the cost of flat roof coverings and replacement include: the type of flat roofing system and materials you want, the area size of the flat roof in M2, the project’s location, the roofing company to be used, the ease at which to reach the roof, cost of removing the old flat roof as well as cost of removing the other waste.

    Although there are many factors to be put into consideration but the most crucial factor is the size of the house or the area size of the flat roof in M2. for instance, a one bedroom apartment’s flat roof will have a price between £1500 to £3000. This is, however, with the assumption that the flat roof is going to be used as the main roof of the house. But if you’re only using it for a section of the house like your garage, the price could range between £700 to £1000

    There four commonly used types of flat roof materials which includes fibreglass, felt, rubber and lead. If you need a felt roof, for example, the price is between £40 to £70 per m2. And in the same tone, a metal roof will generally cost more than a a flat roof made from rubber.

    Another important factor we’ll discuss is the labour or the roofing company to be used. Different roofing companies will charge different prices. As a result, you should carefully compare the prices of the companies in order to get a great deal.

    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 replace flat roof felt?

    How To Replace Flat Roof Felt

    Also referred to as tar paper, roofing felt is installed underneath the roof’s shingles to help deny water access to your home. Installing the roofing felt in overlapping layers builds a water barrier in situations whereby the weather damages or blows away the shingles. Although the application of a roofing felt on a flat roof is relatively easier and safer than working on a peaked roof, it’s advisable to take enough care and precautions. If you lack proper training and experience for this task, we’d recommend you employ a reliable professional to guarantee the best results and save you from further headaches especially in cases whereby unfortunate errors are made. This step by step guide will give you a good insight into the flat roof felt replacement process.

    • Take a measurement of the width and length of the roof.

    • Calculate the square footage by multiplying the numbers.

    • Multiply the square footage gotten by three (it’s advisable to install three layers of roofing felt to create a really strong weather barrier).

    • Use a claw hammer to remove the existing roofing felt.

    • Use utility knife to cut the new felt to fit the length of the roof.

    • Place the first piece along the roof’s edge and use a hammer tacker to tack the felt in place with staples or galvanized nails and hammer.

    • Put the staples or nails at every 6 inches along the side touching the roof’s edge as well as down the short sides.

    • Repeat the same process for the second piece, laying it out beside the first row of felt.

    • Cut a piece of felt to the appropriate length using a utility knife to begin the second layer of roofing felt, and cutting it in half, lengthwise.

    • Apply construction adhesive along the first row using a trowel.

    • Press the first piece for the second layer onto the adhesive. Repeat this process until the roof is covered with a second layer

    • Apply construction adhesive over the second layer to install the third layer. Begin with a full piece of felt without cutting it in half.

    • Overlap each piece by 2 inches until you’ve completely installed the third layer.

    Flat roof

    Other Top Projects in Welwyn Garden City

    Customer Reviews

    Overall rating:


    Welwyn Garden City Flat roof installers are rated 4.4 out of 5 based on 42 reviews of 141 pros.
    The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Flat roof projects that have been connected with Flat roof pros to help them. All Flat roof contractors All Welwyn Garden City Flat roof contractors

    Are you a roofer in Welwyn Garden City?

    We can help you get more flat roof work with our qualified job leads and boost your business.

    Join today