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

Replacement doors

A tired entrance does more than date your façade — it can leak heat, stick in bad weather and leave you second-guessing security. Our replacement doors solve all three.

★★★★★4.9 from 278 Google reviews
Door installation and replacement

We design and install made-to-measure systems for front and back doors that feel solid, close cleanly and keep draughts out, with colours and glass that look like they were chosen for your home (not the catalogue). From one-off replace front door projects to full sets with sidelights and top lights, we handle everything from survey to sign-off with clear communication and tidy workmanship.

Upgrading a door is about the system: insulated slabs or thermally broken frames, A-rated glazing in any panels, compression seals that stay tight, and hardware set so the lock engages positively without forcing. Get those right and the difference is instant the first evening you lock up.

Replacement external doors — choosing the right type

We replace every common entrance style with specifications tuned to British weather and everyday use:

  • Composite doors: the modern benchmark — dense insulating core, timber-look skins, robust locks and huge colour/glass choice.
  • UPVC doors: excellent value with multi-chamber frames, low maintenance and a wide palette of colours and wood-effect foils.
  • Aluminium doors: slim, rigid frames with thermal breaks; ideal for contemporary schemes or where you want more glass without bulk.

Whichever route you choose, we coordinate colours and hardware with your existing windows and roofline so everything reads as one design.

Replace front door — make a confident first impression

Your front door sets the tone for the entire elevation. We help you specify:

  • Panel style: classic moulded panels, modern flush skins, or period details that fit the street
  • Glazing: from clear top lights to privacy or decorative patterns that keep prying eyes out while letting light in
  • Furniture: knockers, numerals and letterplates with draught control in chrome, satin, brass or black
  • Side panels/top lights: where extra light helps; we keep sightlines and proportions crisp

With a measured survey and made-to-measure manufacture, gaps are even, thresholds sit right and the finish looks intentional from every angle.

New back door — practical, secure and easy to live with

Rear doors work harder than the front: pets, shopping, recycling, muddy boots. We specify:

  • Easy-clean skins and frames that shrug off knocks
  • Weatherproof thresholds that drain properly and stay easy to step over
  • Toughened or laminated glass for safety and security
  • Handles and locks calibrated for frequent use

Prefer a full-glazed feel for the kitchen? We’ll balance light with etched privacy glass so the room stays bright without feeling exposed.

Energy performance you’ll feel in the hallway

A modern door stops heat loss where it matters. Expect:

  • Insulated cores (composite) or thermally broken frames (aluminium) to slow conductive transfer
  • Low-E, argon-filled A-rated units in glazed panels and sidelights for low U-values
  • Compression seals and brush stacks around the slab and threshold to block draught paths
  • Warm-edge spacers to reduce edge condensation

The pay-off: steadier temperatures and fewer cold spots by the entrance — even on blustery evenings.

Security built in, not bolted on

We fit protection that works quietly in the background:

  • Multi-point locking with robust keeps set to the correct depths
  • High-security cylinders (anti-snap, anti-pick, anti-drill)
  • Hinge bolts and reinforced screw-ports on vulnerable edges
  • Laminated safety glass in low-level panes and sidelights
  • PAS 24 options available without adding visual bulk

From the kerb you see clean lines, not oversized ironmongery.

Colours, finishes and textures

Go classic, modern or heritage:

  • Neutrals: White, Cream and soft heritage greens for timeless façades
  • Deep tones: Anthracite, Slate and Black for confident contrast
  • Wood-effect foils: Golden Oak, Rosewood, Irish Oak for warmth without upkeep
  • Dual-colour: a statement exterior with fresh White inside to match décor

We’ll bring sample boards to the survey so you can compare finishes in natural light.

Replace uPVC door or repair — what’s best value?

If your uPVC door has a single failed unit or a tired handle, a targeted repair can extend its life. When frames are distorted, multiple panes have failed or seals have perished generally, it’s time to replace uPVC door. A new, A-rated door upgrades insulation, security and looks in a single, tidy project — and avoids years of piecemeal fixes.

Our replacement process — clear, calm and tidy

  • Advice & options Tell us what you want to change — a smarter frontage, a warmer hall, a smoother close. We’ll show sample skins, glass and furniture with itemised pricing.
  • Measured survey We capture exact sizes, hinge side and swing, threshold height, side-panel/top-light details, floor build-ups and reveal depths. Any structural or conservation notes are recorded now.
  • Made-to-measure manufacture Your door is built to specification: material, colour, glazing, hardware and security level (including PAS 24 if required).
  • Professional installation Frames set level, plumb and square with the right packers and fixings for your substrate. Continuous internal air-seals, weatherproof external finishing, clean cills and neat seal lines. Waste removed, area tidied.
  • Handover & paperwork We demonstrate operation and maintenance, then issue your documentation and guarantees. You’ll know exactly what to expect from day one.

Planning, compliance and documentation

Like-for-like replacement external doors rarely need planning permission, but they must meet Building Regulations for thermal performance and safety glazing. We handle compliance and provide the paperwork you’ll need for future sales. If you’re changing the opening size or working in a conservation-sensitive area, we’ll advise on sympathetic designs and any permissions.

What customers say

Rated 4.9 out of 5 on Google and Trustpilot

4.9
★★★★★278 Google reviews
FENSA approved window and door installations
Posted on Google Google
Steve Young profile picture
Steve Young
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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 Google
Nigel Jenkins profile picture
Nigel Jenkins
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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 Google
shirley powell profile picture
shirley powell
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Absolutely amazing service, with price and installation, very clean when he finished,
Posted on Google Google
MIck Hedges profile picture
MIck Hedges
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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 Google
Adam Wisniewski profile picture
Adam Wisniewski
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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 Google
Dolores Furlong-Martin profile picture
Dolores Furlong-Martin
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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 Google
Sarah Thomas profile picture
Sarah Thomas
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Extremely efficient, professional and helpful company. Exemplary fitter. Would highly recommend and have already done so!
Posted on Google Google
Sam Rowe profile picture
Sam Rowe
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Would definitely recommend Sureseal, especially the service engineers who have been very helpful and professional!
Posted on Google Google
Michael Curling profile picture
Michael Curling
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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 Google
Livia Toth profile picture
Livia Toth
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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.
Rated Excellent on Trustpilot: TrustScore 4.9 from 495 reviews

Your free quote

Your free quote.

Tell us a little about your home and we will call to talk it through and arrange your free survey.

  • Quick and free. Just your name, number and postcode.
  • A friendly chat, not a sales pitch. We’ll call to talk through your project and answer your questions, then arrange your free home survey.
  • Prefer to ring us? Call free on 0800 233 5576, Monday to Friday 9am to 5pm.

Get your free, no-obligation quote

Leave your name, number and postcode and one of our local team will call you to arrange your free home survey.

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

Questions

Your questions, answered

How long does a front door replacement take?

Often a single morning or afternoon including removal, fitting, sealing and tidy. Sets with side panels or making-good can take longer; we’ll confirm after survey

Will a darker colour fade?

Modern skins and foils are UV-stable. With simple, non-abrasive cleaning, deep tones like Anthracite or Black keep their colour for years.

Can you match the new door to my windows?

Yes. We coordinate colours, grains and hardware so the elevation looks designed, not pieced together.

Are low thresholds still weather-tight?

Yes — detailed correctly, they balance accessibility and weathering. We set drainage so water moves away from the opening.

What if I’m not sure on style?

We’ll bring sample boards and photos of installed doors to your survey, and sketch options so you can compare looks in your actual opening.

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.

★★★★★4.9 from 278 Google reviews
★★★★★4.9 from 278 Google reviews
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