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

Areas we cover

Based in Pontarddulais, Swansea, and fitting across South and Mid Wales and parts of England. Find your area for local options and nearby customer videos.

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★★★★★4.9 from 278 Google reviews

Wales

South West WalesTowns: Carmarthen, Swansea, Neath, Port Talbot, LlanelliView →Cardiff and the ValeTowns: Penarth, Cowbridge, Llantwit Major, Cardiff, BarryView →Newport and the ValleysTowns: Newport, Pontypool, Blackwood, Ebbw Vale, Abergavenny, Chepstow…View →Mid Wales (Powys)Towns: Llandrindod Wells, Hay-on-Wye, Builth WellsView →Mid Wales (LD)Mid Wales has a lot of homes where practicality matters, cottages, farmhouses, bungalows, and village properties where the upgrade needs to respect the look of the building while making a clear difference to warmth and comfort.View →Mid and North East WalesTowns: Welshpool, Newtown, MachynllethView →

England

BristolBristol homes have their own quirks, terraces with original openings, bay fronts that need careful measuring, and plenty of properties where you want better insulation without losing the look that makes the street feel like Bristol.View →GloucestershireGloucestershire homes are full of character, from stone cottages and farmhouses to Victorian terraces and modern estates, and that’s exactly why the right windows and doors matter.View →HerefordshireHerefordshire has a mix of stone cottages, farmhouses, Victorian terraces and newer estates, which means one size rarely fits all.View →WorcestershireWorcestershire has a real mix of homes, from older cottages and village properties to terraces and modern family houses, and most people are looking for improvements that feel worthwhile day to day.View →

Map of the areas where Sureseal installs windows and doors

Wales & the Borders — core postcode areas

SA — Swansea & West Wales Coastal towns and rural villages where weather resistance matters. We fit A-rated windows and durable roofline that cope with salt air and Atlantic winds.
CF — Cardiff & the Valleys Urban terraces, suburbs and new builds. Popular choices include uPVC windows, composite front doors and patio/bifold upgrades for garden access.
NP — Newport & Monmouthshire A mix of contemporary estates and character homes. We balance heritage looks (flush sash, sash replacements) with modern thermal performance.
LD — Llandrindod Wells & Mid-Wales Sparse, rural housing stock where long-life value and energy savings are key. We specify robust frames and practical roofline replacements.
SY — Shrewsbury & Mid Borders Larger rural homes and market towns. Bespoke, heritage-sensitive designs (sash, timber-look flush) with acoustic and security upgrades as needed.
HR — Hereford & surrounding villages Agricultural/rural properties and larger detached homes. Careful surveying, sympathetic styles and durable fascias/soffits are common briefs.
WR — Worcester & commuter belts Newer estates and established suburbs. Front door refreshes, energy-efficient window replacements and tidy guttering upgrades are typical.
GL — Gloucester & Cheltenham Victorian/Georgian terraces and detached homes. We deliver slim-sightline glazing, sash replacements and colour-matched roofline.
BS — Bristol From compact terraces to executive homes: mixed projects combining uPVC windows, aluminium sliders/bi-folds and composite doors.

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.

Your free quote

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★★★★★“Extremely efficient, professional and helpful company.”Sarah Thomas, Google review · 4.9 from 278 reviews

Questions

Your questions, answered

Do you cover villages as well as main towns?

Yes, the county and regional pages cover surrounding villages, and the town pages focus on the main service centres.

Can you match windows and doors to older cottages?

Yes, the location pages include options that keep a traditional look while improving warmth and security.

Do you handle repairs like misted glass?

Yes, where appropriate we can replace failed units and handle common repair issues, and we’ll advise if replacement is the better value route.

Are finance options available?

If finance is available it will be shown clearly, subject to status and eligibility, and we can talk through what’s suitable.

How do I know which page to use?

Start with your nearest town page if one is listed, otherwise use the county or Wales region page.

Ready to talk about your home?

Leave your details and one of our local team will call you, or ring us free on 0800 233 5576.

Get my free quote →Call free 0800 233 5576

★★★★★4.9 from 278 Google reviews