★★★★★ 4.9 from 278 Google reviewsFENSA registeredSwansea based

Double glazing quotes in South Wales

Get your free, no-obligation double glazing quote. We measure every opening at a free home visit and give you a fixed, itemised quote. Fitted by our own team.

Free home visit and a fixed, itemised quote
Fitted by our own team, never subcontractors
10-year insurance-backed guarantee, FENSA registered

FENSA registered
10-year insurance-backed guarantee
Fully guaranteed and insured
Our own fitting team
FCA authorised credit broker
4.9 on Trustpilot495 reviews

Call free 0800 233 5576 or WhatsApp us

Get your free quote

No obligation, no hard sell. We'll only use your details to arrange your quote. Privacy policy

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What customers say

Rated 4.9 out of 5 on Google and Trustpilot

4.9

★★★★★278 Google reviews

FENSA approved window and door installations

      EXCELLENT  
   Based on 278 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Steve Young 
 
 
 
 Trustindex verifies that the original source of the review is Google. No fuss quote, work carried out on time, great job, polite friendly team & left everything clean & tidy. Have recommended to my friends.
  
 
      Posted on Google  
   
   Nigel Jenkins 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had our windows and doors replaced by Sureseal Windows and could not be happier.
We had a home visit from the salesman, who went through the various designs and colours available plus an initial measurement of all the items needed.
Following our agreement to purchase the doors and windows a supervisor visited to precisely measure the openings and look for any issues that might arise during the install.
The fitting was booked in about 10 weeks later.
Alan contacted us to give his ETA of the morning of the start of the job. And we cannot praise Alan enough for his work and cleaning up after. All areas where work was done were covered with dust sheets and no mess was left.
There were a couple of remedial jobs to be completed when the parts were available.
Sean completed these jobs for us over a coarse of a morning. And, as with Alan previously Sean's work was great and all was cleaned up on completion.
Both workers are a credit to SureSeal. And we highly recommend the Company.
  
 
      Posted on Google  
   
   shirley powell 
 
 
 
 Trustindex verifies that the original source of the review is Google. Absolutely amazing service, with price and installation, very clean when he finished,
  
 
      Posted on Google  
   
   MIck Hedges 
 
 
 
 Trustindex verifies that the original source of the review is Google. From initial call from Sureseal making appointments to choosing our windows all the team have been very knowledgeable and helpful, No big sell to get the costs up just what we wanted and even reduced aspects no of closers etc. to meet requirements. Plenty of payment options with full explanation again no push either way.
Survey was again very straightforward and with some discussion even more savings found.
Pleasure to do business with. Great service and very knowledgeable.will post photos of finished project once complete.
Mike Hedges
  
 
      Posted on Google  
   
   Adam Wisniewski 
 
 
 
 Trustindex verifies that the original source of the review is Google. Excellent company. Got all windows and doors installed professionally, as agreed and on time. Very good quality product professionally installed. Will always recommend
  
 
      Posted on Google  
   
   Dolores Furlong-Martin 
 
 
 
 Trustindex verifies that the original source of the review is Google. We had all new windows and doors from sureseal.  A very skilled fitter installed them.  We had a couple of issues after but were resolved immediately.  Would certainly recommend this company from start to finish  a great job and a very happy customer
  
 
      Posted on Google  
   
   Sarah Thomas 
 
 
 
 Trustindex verifies that the original source of the review is Google. Extremely efficient, professional and helpful company. Exemplary fitter. Would highly recommend and have already done so!
  
 
      Posted on Google  
   
   Sam Rowe 
 
 
 
 Trustindex verifies that the original source of the review is Google. Would definitely recommend Sureseal, especially the service engineers who have been very helpful and professional!
  
 
      Posted on Google  
   
   Michael Curling 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sureseal windows has completed installation of my windows to a very high standard with excellent work by the lone installer who was very organised and polite and completed within the time frame quoted  I highly recommend this firm
  
 
      Posted on Google  
   
   Livia Toth 
 
 
 
 Trustindex verifies that the original source of the review is Google. Sureseal windows all team very good. Customer service always available, helpful and professional.  Alan very kind, polite and professional.  He knows what he is doing and working hard. I am above and beyond.  Thank you so much.

Real homes, real customers

See the work, near you

Homeowners in Aberaeron, Swansea and Newport show you round their new windows and doors.

▶

Aberaeron, Ceredigion

Sash windows for a farmhouse

uPVC sliding sash windows and a composite rear door for a century-old stone farmhouse.

▶

Dunvant, Swansea

Whole-home replacement

New uPVC windows, including tilt and turn, and replacement doors throughout.

▶

Newport

Bay window upgrade

Replacement uPVC windows through a terraced home, including both bay windows.

How it works

Call or leave your details

We'll arrange a free home visit at a time that suits you.

We measure and quote

We measure every opening and give you a fixed, itemised quote, valid for 28 days.

Our own team fits them

Our own team fits your new windows and doors, usually within 6 to 10 weeks.

White sash-style windows fitted to a stone farmhouse in Aberaeron — Sash windows we fitted in Aberaeron

Why choose Sureseal

4.9 from 278 Google reviews

Real customers, real reviews on Google.

10-year insurance-backed window guarantee

FENSA certificate, fully guaranteed and insured.

Our own local team

Surveyed and fitted by our own installers, never subcontractors. Based in Swansea.

No hard sell

One free home visit, an honest recommendation and a written quote, then the decision is yours.

Got a quote from one of the big national window firms? We regularly beat them on price, and on the quality of the fitting.Local homeowners switch to us from the national names all the time. Get your price and compare.

Styles to suit your home

Windows

Classic casement

Lifestyle uPVC casements with clean lines.

Brochure (PDF) →

Windows

Sculptured casement

Halo Rustique: softer, rounded profiles that echo traditional putty lines on cottages and terraces.

Brochure (PDF) →

Windows

Flush sash

Halo flush sash: sashes sit level with the frame for the look of timber, without the painting.

Brochure (PDF) →

Windows

Heritage sliding sash

Slim sightlines, astragal bars and run-through horns for period and conservation-area homes.

Doors

uPVC front & back doors

Hurst uPVC door panels with multi-point locking and weatherproof thresholds.

Brochure (PDF) →

Doors

Hallmark composite door

Timber-look skin over an insulated core, with PAS 24-ready security options.

Brochure (PDF) →

Doors

French & patio doors

Light-filled French pairs or smooth sliding patio doors to open up the garden.

Doors

Aluminium bi-folds

Slim, thermally broken frames, 2 to 7 panels, folding back to open a whole wall.

We bring samples to your visit so you can see and feel each one.

Every quote includes

Survey and measuring by our own team
Removal of your old frames, sealed and tidied after fitting
Fitting by our own installers, never subcontractors
FENSA certificate and a 10-year insurance-backed window guarantee, fully guaranteed and insured

Your questions, answered

Is the quote fixed?

Yes. After we measure every opening at your free home visit, you get a fixed, itemised quote, valid for 28 days.

What happens after I leave my details?

One of our team will give you a call to talk through your project and answer any questions. If you’d like an exact price, we can then arrange a free home visit at a time that suits you. Or call us free on 0800 233 5576, Monday to Friday 9am to 5pm.

Can I spread the cost?

Yes. There are monthly payment plans and Buy Now Pay Later options, subject to status and affordability. See the finance options and representative examples, or ask us to talk you through them when we call.

When can my windows and doors be fitted?

Usually 6–10 weeks, depending on the type of installation. We confirm the timescale after your survey.

Which areas do you cover?

All of South Wales: Swansea and Gower, Neath Port Talbot, Llanelli and Carmarthenshire, Pembrokeshire, Cardiff, the Vale and Bridgend, the Valleys, and Newport and Gwent. Our own team covers Mid Wales too.

Can I replace some windows now and the rest later?

Yes. We’ll help you choose a consistent design so you can plan the work in stages.

Are you the same company as Sureseal in Liverpool?

No. We are Sureseal Windows Limited, based in Pontarddulais, Swansea, serving South and Mid Wales.

Finance

Flexible ways to spread the cost

Finance can be arranged at home, decisions are quick, and you always get a clear, itemised quote before you sign anything. Credit is subject to status and affordability.

See finance examples and terms

Buy Now, Pay 2027 19.9% APR Fixed

Tap to see the representative example

If settled in full within the deferred period then no interest charges will be incurred, £29 Exit Fee will apply. If not settled in full within the deferred period then interest will have accrued from the start of the contract on any amount outstanding at the end of the deferred period and will continue to be charged once you start your monthly repayments.

Representative examples:

Cash price: £3,000.00
Deposit: £0.00
Amount of credit: £3,000.00
Interest rate % (fixed p.a.): 19.9
Representative % APR: 19.9
Duration (including 12 months deferral period): 132
120 monthly payments of: £64.50
Total amount payable: £7,740.00
Settlement fee: £29.00

Cash price: £6,000.00
Deposit: £0.00
Amount of credit: £6,000.00
Interest rate % (fixed p.a.): 19.9
Representative % APR: 19.9
Duration (including 12 months deferral period): 132
120 monthly payments of: £129.00
Total amount payable: £15,480.00
Settlement fee: £29.00

Monthly Payment Finance, Representative APR 11.9%

Tap to see the representative example

123 or 163 months including a 3 month BNPL Period: If settled in full within the deferred period then no interest charges will be incurred, £29 Exit Fee will apply. If not settled in full within the deferred period then interest will have accrued from the start of the contract on any amount outstanding at the end of the deferred period and will continue to be charged once you start your monthly repayments.

Representative examples:

Cash price: £3,000.00
Deposit: £0.00
Amount of credit: £3,000.00
Interest rate % (fixed p.a.): 11.9
Representative % APR: 11.9
Duration (including 3 months deferral period): 123
120 monthly payments of: £42.62
Total amount payable: £5,114.40
Settlement fee: £29.00

Cash price: £11,000.00
Deposit: £0.00
Amount of credit: £11,000.00
Interest rate % (fixed p.a.): 11.9
Representative % APR: 11.9
Duration (including 3 months deferral period): 163
160 monthly payments of: £135.82
Total amount payable: £21,731.20
Settlement fee: £29.00

Monthly Payment Finance, Representative APR 13.9%

Tap to see the representative example

60 months including a 3 month BNPL Period: If settled in full within the deferred period then no interest charges will be incurred, £29 Exit Fee will apply. If not settled in full within the deferred period then interest will have accrued from the start of the contract on any amount outstanding at the end of the deferred period and will continue to be charged once you start your monthly repayments.

Representative example:

Cash price: £3,000.00
Deposit: £0.00
Amount of credit: £3,000.00
Interest rate % (fixed p.a.): 13.9
Representative % APR: 13.9
Duration (including 3 months deferral period): 63
60 monthly payments of: £69.88
Total amount payable: £4,192.80
Settlement fee: £29.00

Interest-free credit over 24 months (0% APR)

Tap to see the representative example

Spread the cost with equal monthly payments and pay no interest during the promotional period (subject to availability).

Representative example:

Cash price: £3,000.00
Deposit: £1,050.00
Amount of credit: £1,950.00
Duration of agreement: 24
Rate of interest %: 0
Representative % APR: 0
24 monthly payments of: £81.25
Total amount payable: £3,000.00

Who provides the credit? Credit is subject to status and affordability. Terms & Conditions Apply. Sureseal Windows Limited FRN: 764026 is a credit broker, not the lender and is authorised and regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority. Registered in England & Wales No. 10035258. VAT No. GB296090869. Business address: Woodland Farm, Tir Syr Walter, Ammanford, SA18 1JW.

Prefer to chat it through? Call 0800 233 5576 and ask about our current finance offers.

Ready for your free quote?

Leave your details and one of our local team will call you, or ring us free.

Get my free quote →Call free 0800 233 5576