Independent customer experience website — not affiliated with or operated by T&K Home Improvements.
1,091 days since installation started and counting… Still not finished!Installation started 30 October 2023
A customer’s story

I expected seven days.
A year later, return visits continued.

My account of an unfinished window and door installation, the problems I found, and the compliance certificate and final guarantee I have not received.

DOCUMENTEDDated correspondence and court documents
EVIDENCE-LEDBased on correspondence and my account
ONGOINGClaim and counterclaim recorded

This was work on our home.

We were having windows and doors replaced. T&K allowed seven days for the installation, starting on 30 October 2023. By November 2024, replacement and remedial work was still being arranged.

In January 2024, T&K asked me to write down the snagging items I had found. I went room by room and sent a list. For me, the problem was more than individual faults: there were repeated visits, gaps between them and no clear point when we could put the work behind us.

In August 2024, I wrote that our wider refurbishment had been on hold for months. When T&K declared the installation finished that November, I did not agree. My concern was straightforward: I wanted the work finished properly, the damage addressed and the paperwork clear.

What the photographs show

I had put our general refurbishment on hold for more than two years because of the unfinished T&K installation. The concealed issues came to light when trims and sills were removed as part of that refurbishment—not to search for defects. The November 2023 photographs show work during installation. Select a photograph to enlarge it.

Standards behind the concerns

Each assessment separates the photographed condition, the relevant benchmark and the further check needed. Potential breaches are identified as concerns for investigation, not findings by an expert or the court.

England, with installation beginning in October 2023. The references use editions available at that time; project-specific commencement and transitional provisions still need confirming.

Requirements, guidance and the concerns they address
BenchmarkWhat it addressesSources
Insulation and draughtproofingBuilding Regulations / official guidancePart L1(a); Approved Document L §§10.3 and 4.19 address replacement fittings, draughtproofing and heat loss at junctions.Approved Document L (2021, with 2023 amendments), §10.3 and §4.19
Weather resistanceBuilding Regulations / official guidancePart C2; Approved Document C §5.29 addresses rain resistance at wall-to-frame joints. A visible crack needs checking to establish whether it compromises that function.Approved Document C (2004, amended 2010/2013), §5.29 — rain resistance at frame joints
Materials and workmanshipLegal requirement / official guidanceRegulation 7(1) requires suitable materials, properly applied, and workmanlike execution. A cosmetic flaw alone does not establish failure of the regulatory function.Regulation 7(1) — materials and workmanship
Approved Document 7 (2013, amended 2018), regulation 7(1), §2 — official guidance
Perimeter sealingFENSA compliance guidance, July 2023Pages 14–15 cover continuous perimeter seals, sill joints, backing and drainage. These help assess whether a complete weather-resistant joint was installed.FENSA Guide to Compliance, July 2023, printed pages 14–15
Trims, joints and finishingGGF good-practice guidance, April 2016Sections 3.21–3.23 distinguish decorative trims from insulating fill and seals. Section 3.24 warns against sand-and-cement infill at the outer frame joint, subject to the stated steel-window exception. Sections 3.25–3.26 and Table 3 address agreed making good and final checks.GGF installation guide, April 2016 — §§3.21–3.26 and Table 3
Survey and installationBritish Standard / product instructionsBS 8213-4:2016 is a survey and installation code of practice. BSI’s scope has been checked; the full licensed text has not. Exact clause findings and tolerances need that text and the installed system’s instructions.BS 8213-4:2016 — survey and installation code, BSI scope
Certification and notificationCompliance evidenceA competent person scheme is one route to Building Regulations compliance. Its certificate provides evidence of compliance. A certificate not supplied to the customer must be distinguished from proven absence of registration and from physical installation defects.GOV.UK — competent person schemes and compliance certificates

Approved Documents describe routes to meeting Building Regulations; other compliant solutions can exist. FENSA/GGF guidance and British Standards are distinct from legislation. Membership, contractual incorporation and manufacturer-specific requirements have not been assumed. Photographs after trim or sill removal need checking against undisturbed layers and any changes caused during removal. Foam is one possible insulating material; its absence alone is not a breach. No independent compliance finding has been obtained.

34 selected photographs. Six examples above; explore the remaining views by topic below.

External finishes and seals · 12 photographs
Exposed joints and trims · 4 photographs
Internal finishes · 8 photographs
During installation — November 2023 · 2 photographs
Frame alignment details · 2 photographs
About the photographs and guidance

Dates come from camera metadata unless supplied by me. November 2023 installation-stage dates and the chronology of later concealed discoveries are from my account. Multiple angles are not additional defects. A current repair reconciliation and independent technical assessment remain to be completed. None of the first-floor windows has been assessed externally because of the height. This gallery and the snagging list do not represent a complete assessment of the installation. Gallery previews are cropped to fill their panels; select an image to view the full, uncropped photograph.

The snagging list—and later discoveries

My January 2024 snagging list contained 300-plus observations, varying in seriousness. Later removal of trims or internal sills revealed additional concealed issues. None of the first-floor windows has been assessed externally because of the height, so both the original list and subsequent checks remain substantially incomplete in their coverage.

What the January 2024 list covered

I supplied this room-by-room list at T&K’s request on 30 January 2024. It covered the concerns known to me then, before the later discoveries behind trims:

  • Opening, closing and hardware: Problems with operation, fittings and components.
  • Frame alignment and positioning: Frames reported as leaning or sitting unevenly within openings.
  • Seals and draughtproofing: Missing, disturbed or poorly finished seals and perimeter joints.
  • Glass and sealed units: Scratches, marks, trapped material and concerns about how units were fitted.
  • Trims and internal finishes: Wide or built-up trims, awkward sill junctions and uneven finishing.
  • Damage and making good: Plaster, render, decoration, tiles and surrounding surfaces.
  • Cleaning, missing items and checks: Debris, surface marks, missing equipment and areas still requiring inspection.

This was a non-exhaustive historical list of my observations, including areas needing inspection. It is not a reconciled count of separate defects still outstanding today. T&K disputed my assessment and declared completion in November 2024; the chronology records the correspondence that followed.

01

First-floor exteriors remain unassessed

None of the first-floor windows has been assessed externally because of the height. The original snagging list and subsequent checks therefore leave a substantial part of the installation unassessed. The full extent of any external issues at first-floor level remains unknown.

02

Concern about what remains hidden

Every area I have opened up and checked has revealed an issue I consider serious. I’m concerned these discoveries may be the tip of the iceberg, with more problems concealed elsewhere.

03

The bay-window junction and external cracking

The built-up junction exposed behind the trim and cracking beside the bay raise a possible structural integrity concern requiring further investigation. This should cover both ends, the fixings, any load-bearing support, and the survey and installation detail.

04

Deterioration and the risk of further damage

A small number of issues appeared after T&K stopped work, leaving the installation unfinished. Some have worsened over time. I’m concerned about water ingress and further property damage, and want the affected work assessed and put right.

05

No compliance certificate supplied

I have not been supplied with an Assure or equivalent Building Regulations compliance certificate for this installation. The DGCOS insurance paperwork is a different document.

06

Windows and doors that worked properly

I raised problems with opening, closing, alignment, seals and finishes. These were the everyday details I wanted checked and put right.

07

A clear plan to finish

I wanted to know what each return visit would achieve and what would still be left afterwards. My account is that we never reached an agreed final sign-off.

08

Damage made good

My emails raised damage to surfaces, plaster, render, decoration, tiles and belongings. I wanted the damage addressed alongside the installation.

09

A payment position I could understand

I made an agreed payment in May 2024 while work continued. I later challenged the invoice and remaining balance. The exact payment reconciliation is still unresolved.

10

Confidence in the guarantee

If another installer has to finish or rectify the work, what protection will I have? I want that answered clearly, alongside the written guarantee and compliance certification.

11

Care while working in our home

My January 2024 email also raised concerns about doors being left unsecured and keys being unavailable. These concerns relate to that period, not our home’s current security.

Unfinished work. Missing certification and guarantee.

My order acknowledgment referred to a ten-year guarantee, with final paperwork following payment of the balance. I have not received the final installer’s guarantee or an Assure or equivalent compliance certificate. DGCOS insurance documents were supplied separately.

I want issues that have appeared or worsened to be assessed and rectified under the applicable guarantee terms. I also want clarity about the protection remaining if another installer has to put the work right. The contract has different cover periods for different parts of the installation and addresses third-party work.

A QUESTION I KEEP COMING BACK TO

What would you pay for an unfinished installation with unresolved defects, no compliance certificate supplied and no final installer’s guarantee?

The key milestones

The main events, with the detailed record available below.

Seven-day installation programme confirmed

T&K booked 30 October–7 November, allowing seven days subject to circumstances outside its control. Completion paperwork and payment were to follow.

Installation begins

My account is that installation began as booked. Further visits and work followed well beyond the planned seven days.

Requested room-by-room list supplied

I emailed the room-by-room list T&K had requested, setting out the problems I had found. I said it was not exhaustive and separately identified first-floor external checks I could not carry out.

Invoice and payment following my agreement with the installations manager

The invoice emailed on 10 May was dated 30 October 2023 and requested £12,750. My same-day email confirms the agreed payment was made but gives no amount. My explicit written objection is dated 17 January 2025. The exact payment reconciliation remains unresolved.

T&K declares completion; I disagree

T&K said the job was complete, met industry standards and the balance was due. I disagreed: my account was of unfinished work and no joint final sign-off.

T&K’s claim issued

T&K issued its claim for payment. I disputed the balance.

Missing court attachment and earlier questionnaire queried

I queried the missing attachment and the questionnaire already supplied. No later answer or outcome has been checked.

Read the full chronology · 83 selected entries

Quotations, appointments, reported issues and procedural updates. Source references identify the private evidence register.

2020 5 entries
Correspondence

First appointment arranged

T&K arranged a design appointment for 11 June. Our quotation discussions began well before the 2023 installation.

Source references: E001
Correspondence

Initial window layouts supplied

T&K emailed proposed Residence window layouts. The attached PDF has not been checked.

Source references: E002
Correspondence

Early quotation and survey condition

An early £27,598 quotation was subject to survey and final price checks, with a 10% deposit proposed.

Source references: E003
Correspondence

Discussions resume

Discussions resumed, with telephone and showroom arrangements following.

Source references: E004 · E005 · E006 · E007 · E008 · E009
Customer correspondence

I restart the quotation discussion after other projects

I said other projects had delayed my decision and that I would return to it in the new year.

Source references: E270 · E272 · E273 · E274
2021 9 entries
Correspondence

Product viewing arrangements

We discussed viewing the Residence 9 windows during restrictions.

Source references: E010 · E011 · E012
Quotation correspondence

Quotation requested, followed by repeated chasers

I requested the quotations and followed up on 8, 11 and 15 February.

Source references: E277 · E278 · E279 · E280
Response and follow-up

Quotation chased four times in February

I asked four times across 14 calendar days. I have not located a written answer between those messages, although calls may have taken place.

Source references: E277 · E278 · E279 · E280
Quotation correspondence

Further quotation updates chased

I chased on 29 April and 7 May, then again on 25 and 31 May after the appointment.

Source references: E281 · E282 · E286 · E287 · E288
Correspondence

Measurements and a revised quotation proposed

T&K proposed another measurement visit, provisionally for 19 May, before re-quoting.

Source references: E013 · E014 · E015 · E016 · E017 · E018 · E019
Response and follow-up

An update after two further chasers

Eleven days after my first chase, T&K apologised and proposed another measurement visit. I was still waiting for the quotation.

Source references: E281 · E282 · E013
Correspondence

Two product quotations supplied

T&K quoted £42,347 for Residence 9 and £30,606 for flush casements.

Source references: E020
Response and follow-up

Quick updates, but the quotation followed later

T&K gave prompt status replies on 25 May; the quotations arrived eight calendar days later, after another chase.

Source references: E286 · E017 · E287 · E018 · E288 · E019 · E020
Correspondence

Mixed product option discussed

T&K quoted £33,560 for a mix of Residence 9 and flush windows.

Source references: E024
2022 5 entries
Correspondence

Colour and price revised

A £33,218.31 quotation followed discussions about colour availability.

Source references: E025
Quotation correspondence

Updated quotation pursued again

I requested the updated quotation four times in January and asked for a timescale on 8 February.

Source references: E296 · E297 · E298 · E299 · E303
Quotation correspondence

Revised quotation requested after a pause

I restarted discussions after a pause. Further questions and chasers followed in December and January.

Source references: E304 · E305 · E307 · E308 · E309 · E310
Response and follow-up

Prices and lead times answered after a chase

T&K answered eight days after my request, about 71 minutes after my chase.

Source references: E307 · E308 · E028
Correspondence

Updated quotation supplied

T&K sent updated pricing. I then requested changes to the scope and asked about staged work.

Source references: E029 · E030
2023 19 entries
Response and follow-up

Revised quotation still being chased 39 days later

I chased the changes I had requested 39 days earlier. I have not located a written answer in between.

Source references: E030 · E310
Correspondence

Final quotation discussions restart

T&K supplied updated quotations in September, with funding options to follow.

Source references: E031 · E032
Correspondence

Sales proposal describes product protection

Sales emails discussed the specification, discounts and a ten-year guarantee. The final contract came later.

Source references: E034 · E035 · E038 · E041
Specification correspondence

Showroom visit and quotation accuracy raised

I wanted to see a comparable window and clear up quotation errors, energy ratings and product details before proceeding.

Source references: E311 · E312 · E313 · E314 · E315 · E316 · E317 · E318 · E319
Contract document

Signed contract: deposit and final-payment terms

The signed contract records £27,500: a £13,750 deposit, no interim stage payments and £13,750 payable once practically complete.

Source references: E044 · E047 · U001
Correspondence

Deposit and payment stages acknowledged

T&K acknowledged the £13,750 deposit and described payment on completion, followed by final guarantee documentation.

Source references: E052
Correspondence

Survey appointment confirmed

T&K booked a survey for 29 September and requested checks before signing the survey confirmation.

Source references: E053
Correspondence

Designs sent after survey

The surveyor sent designs. An October/November installation depended on ordering the frames in time.

Source references: E054
Correspondence

Order and survey confirmation requested

T&K requested the signed order and survey confirmation, quoting an indicative four-to-six-week period.

Source references: E055
Specification correspondence

Survey proportions and handles queried before approval

I queried frame proportions, handles and dates. I accepted the revised design the next day.

Source references: E321 · E322 · E057
Correspondence

Design and handle clarification

The surveyor clarified the amended frame and silver handles. The 30 October week remained provisional.

Source references: E057
Correspondence

Reduced cash price of £26,500 accepted

I expressly accepted the reduced £26,500 price without finance and returned an attachment requested for the survey confirmation.

Source references: E058 · E323 · E324
Correspondence

DGCOS insurance documents emailed

DGCOS emailed insurance policy documents, separate from T&K’s own guarantee and compliance certification.

Source references: E056 · E059
Correspondence

Frames ordered

The surveyor confirmed the frames were ordered; installation dates awaited factory delivery confirmation.

Source references: E061
Correspondence

Seven-day installation programme confirmed

T&K booked 30 October–7 November, allowing seven days subject to circumstances outside its control. Completion paperwork and payment were to follow.

Source references: E062
Installation planning

I ask for a fitting sequence so we can prepare

I asked for the fitting order so we could prepare our home. I accepted T&K’s proposed sequence on 24 October.

Source references: E327 · E328 · E329 · E330 · E065
Correspondence

Sequence of installation discussed

T&K proposed starting upstairs, aiming for six frames a day and agreeing the remaining sequence with me.

Source references: E063 · E064 · E065
Customer account

Installation begins

My account is that installation began as booked. Further visits and work followed well beyond the planned seven days.

Source references: E062 · E089
Correspondence

Further visit needed to finalise works

T&K cancelled an unaccepted 2 January slot and proposed 12 January. I accepted the replacement date.

Source references: E066 · E331
2024 23 entries
Correspondence

January return visit confirmed

T&K confirmed the 12 January return visit and asked about silicone.

Source references: E067
Correspondence

T&K asks how the visit finished

The operations manager asked how the previous week’s work had finished and requested a call.

Source references: E068
Correspondence

T&K asks me to produce the snagging list

T&K asked me to email the snagging items I had found so it could review them.

Source references: E069
Customer observations

Requested room-by-room list supplied

I emailed the room-by-room list T&K had requested, setting out the problems I had found. I said it was not exhaustive and separately identified first-floor external checks I could not carry out.

Source references: E070
Customer observations

Door security concerns recorded

I reported unsecured doors and unavailable keys. This is a historical account, not a description of current home security.

Source references: E070
Correspondence

Receipt acknowledged; T&K disputes the assessment

T&K acknowledged my list, disputed my assessment and proposed independent mediation and assessment.

Source references: E071 · E072
Response and follow-up

Snagging list acknowledged and disputed within two days

My list was acknowledged around 42 hours later. That evening, T&K disputed my assessment and proposed independent mediation and assessment.

Source references: E070 · E071 · E072
Correspondence

Another return date proposed

T&K provisionally offered 1 March and asked me to confirm.

Source references: E073
Correspondence

Further work to downstairs proposed

T&K proposed another visit on 23 March to complete downstairs work.

Source references: E074
Correspondence

April appointment offered

I could not make the proposed Saturday and asked for a weekday. T&K offered 12 April, which I accepted.

Source references: E075 · E335 · E336
Correspondence

Invoice and payment following my agreement with the installations manager

The invoice emailed on 10 May was dated 30 October 2023 and requested £12,750. My same-day email confirms the agreed payment was made but gives no amount. My explicit written objection is dated 17 January 2025. The exact payment reconciliation remains unresolved.

Source references: E076 · E077 · E089 · U005 · E337
Correspondence

Payment acknowledged; replacement unit still on order

T&K thanked me for payment. A replacement unit was still on order and more visits were being arranged.

Source references: E077
Customer correspondence

Unfinished work and wider refurbishment disruption raised

I raised the replacement window, tile repairs, silicone and Kubu costs. I also explained that our wider refurbishment had been on hold for months.

Source references: E339
Correspondence

Replacement design confirmed and remaining works referenced

T&K said the replacement window would be ordered and further work arranged once it had a delivery date.

Source references: E079
Response and follow-up

A reply after seven calendar days, with matters still open

T&K replied seven days later. It addressed some points, but the work and costs were not all resolved in that reply.

Source references: E339 · E079
Correspondence

Replacement window expected in September

T&K expected the replacement window in mid-September, with remedial work to be arranged. This was an estimate.

Source references: E080
Booking correspondence

October visit dates and materials discussed

I asked to retain 21–22 October and supplied the requested silicone link. The emails confirm arrangements, not completed work.

Source references: E341 · E342 · E081 · E082
Correspondence

Silicone ordered

Nearly a year after the original programme, T&K confirmed it had ordered the silicone.

Source references: E081 · E082
Correspondence

November return visit proposed

T&K proposed 11 November; I accepted. Its later email says the visit took place.

Source references: E083 · E084 · E343
Disputed completion

T&K declares completion; I disagree

T&K said the job was complete, met industry standards and the balance was due. I disagreed: my account was of unfinished work and no joint final sign-off.

Source references: E084 · E089
Correspondence

DGCOS initially cannot locate the registration

DGCOS initially could not find the registration. It corrected that position the next day.

Source references: E085
Correspondence

DGCOS locates the record and explains complaint route

DGCOS located the record under a different postcode and explained its complaint route.

Source references: E087
Payment demand

Solicitor’s demand follows completion declaration

T&K’s solicitor demanded £6,375 as the balance after the May payment. I disputed that payment was due.

Source references: U010
2025 14 entries
Correspondence

Independent inspection enquiry

RISA offered a callback about suitable inspection reports. No completed inspection is established by that email.

Source references: E088
Issued claim

T&K’s claim issued

T&K issued its claim for payment. I disputed the balance.

Source references: U004
Customer account

I set out the history and outstanding issues

I sent a detailed account of the unfinished work, damage, paperwork, payments and repeated visits—and challenged the invoice.

Source references: E089
Solicitor response and follow-up

Solicitor acknowledges receipt after my chase

After I chased receipt, the solicitor acknowledged my summary and said instructions were awaited. Three calendar days had passed since I sent it.

Source references: E089 · E090 · E091
Procedural record

Defence and Counterclaim recorded

My Defence and Counterclaim is recorded as filed on 24 January. The court later confirmed it was logged.

Source references: E162 · E230
Customer correspondence

I chase progress and report unanswered calls

I asked for an update and reported that calls were going to voicemail.

Source references: E347
Solicitor response and follow-up

Twenty days after my summary: another holding response

Twenty days after my summary, I was still receiving holding updates about instructions and a handover, rather than a full answer.

Source references: E089 · E093 · E095 · E347 · E096
Procedural record

T&K’s Defence to Counterclaim sent

T&K sent its Defence to Counterclaim.

Source references: E110
Correspondence

RISA quotes for a condition inspection

RISA quoted £799 plus VAT for a condition report, and later £1,200 plus VAT for an expert witness report—not repair costs.

Source references: E128 · E129
Correspondence

Inspection arrangements still conditional

RISA said an inspection date depended on payment confirmation. No completed report is established by these emails.

Source references: E130 · E131 · E133 · E137
Procedural record

Court progression requested

T&K’s solicitors said they had asked the court to progress the case and issue questionnaires.

Source references: E148
Court confirmation

Case transferred to Northampton

CNBC later confirmed transfer to Northampton on this date.

Source references: E229
Procedural record

Directions Questionnaires submitted

The correspondence records both sides submitting Directions Questionnaires.

Source references: E161 · E162 · E163
Correspondence

Further DGCOS insurance documents supplied

DGCOS emailed insurance documents again. Their policy terms and dates still need checking against the PDFs.

Source references: E189 · E192
2026 8 entries
Procedural record

Current case status requested

I asked the court for the case status, directions and hearing position.

Source references: E226
Court confirmation

CNBC confirms the earlier transfer

CNBC confirmed the October 2025 transfer and referred my enquiry to Northampton.

Source references: E229
Court confirmation

Northampton confirms the recorded position

Northampton confirmed the Defence and Counterclaim were logged and reported no allocation notice, hearing date or directions at that time.

Source references: E230
Correspondence

Google review challenged

T&K’s solicitor disputed my Google review and said it would seek a removal order if I did not remove it. No order was supplied.

Source references: E234
Platform decision

Trustpilot review hidden, then restored

Trustpilot hid the review at 09:56 BST and restored it at 10:41 after its assessment. This was a moderation outcome.

Source references: E249 · E250
Court correspondence

Court locates file and requests questionnaire before referral

The court requested a questionnaire and further evidence by 23 October before referral. The email contained no questionnaire attachment.

Source references: S001 · E352
Customer account

Further review recorded

I submitted a further account of my experience to ProvenExpert and received its confirmation email.

Source references: E263
Court correspondence

Missing court attachment and earlier questionnaire queried

I queried the missing attachment and the questionnaire already supplied. No later answer or outcome has been checked.

Source references: E352 · S001

A disagreement about whether the job was finished.

T&K issued its claim for payment on 7 January 2025. I disputed the balance and filed a Defence and Counterclaim dated 24 January. T&K’s Defence to Counterclaim is dated 16 April.

On 16 October 2026, the court asked for a questionnaire and further evidence by 23 October before referral. I replied on 21 October because the attachment was missing and I had already supplied a questionnaire.

Sharing my experience brought further challenges.

I also described what happened on review platforms.

Google: asked to remove my review

On 5 October 2026, T&K’s solicitor disputed my review and said it would seek a court order if I did not remove it. That email was a request, not an order.

Trustpilot: hidden, then restored

On 6 October, Trustpilot temporarily hid my review after a flag from the business. About 45 minutes later, it confirmed the review would be restored. This was the platform’s moderation decision.

ProvenExpert: my account submitted

I submitted a further review on 18 October 2026, describing my experience of the installation and dispute.

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