How to check window and door guarantees properly
Buying guide for windows and doors
When comparing windows and doors for a new build or replacement project, people often look first at opening style, appearance and glazing. Yet the whole order matters when protection is needed later: which specification was agreed, who takes measurements, who installs, which connection details form part of the work, and which documents apply if you need to complain? A guarantee is not a general promise of quality for an entire building project. It is a voluntary written commitment with a period, conditions and limits. Separate statutory remedies may also apply, depending on the contract and transaction. Keeping these layers distinct and recording the interfaces between product, installation and other trades helps you compare offers and deal with problems methodically.
01 / Compare documents
Keep guarantees, statutory remedies and goodwill separate
In conversation, guarantees and statutory remedies are often treated as the same thing, although they serve different purposes. A guarantee is an additional voluntary statement by the guarantor. Its wording determines which characteristics or parts it covers, the conditions for a claim and the remedy offered. Statutory remedies, by contrast, arise from the relevant sale or works contract and applicable law. In Malta, consumer-goods rules can provide remedies for non-conformity, but the actual contract and cross-border transaction still matter. Whether the arrangement is a product sale, delivery with installation or a wider building contract changes the starting point. “With a guarantee” is therefore not enough: obtain the full terms before placing the order and read them alongside the quotation and order confirmation.
Goodwill is different again. It can provide a practical solution, but it is not cover promised in advance. Do not assume that every later adjustment or visual change will automatically be carried out free of charge. A simple project file with three sections is useful: product commitment, contract and installation agreement. Note the relevant contact for every component. For a front door, for example, the supplier may be responsible for the agreed door set while the installation company has separate obligations for its work. This division may seem formal, but it helps prevent a complaint being passed between several parties.
Scope matters more than duration
A five-year guarantee for windows and doors is comparable only when its subject is described with equal precision. Bloomcabin offers a five-year manufacturer guarantee for windows and doors. Also ask whether the statement applies to the complete unit or only particular components, and whether hardware, seals, glazing, finish, frame, threshold and accessories are treated differently. Check whether it covers a material or functional defect, or only a specified characteristic. A title such as single inward-opening window describes its configuration, but does not automatically define every feature later regarded as agreed. Those details must appear in the order documents.
Read the remedy as carefully as the cover. Some conditions provide for repair, replacement of the affected part or another remedy; this does not necessarily create a right to a completely new item or work on adjacent building elements. Clarify whether the guarantor carries out the inspection, whether a site visit is planned, and how costs for removal, refitting, access or ancillary work are handled. A useful offer comparison therefore includes columns for “guarantee document received”, “covered parts” and “remedy if applicable”. This reveals whether two promises with apparently identical durations have the same practical value.
02 / Define the order
Read the order as a reliable product description
A complaint often starts months earlier, with an unclear order. The order confirmation should clearly identify opening direction, number of sashes, dimensions, frame appearance, colour or surface details, glazing, divisions, handles, hardware and special accessories. For decorative features, distinguish between applied bars and bars that divide the glass. “Without bars” is also a relevant specification if the appearance was discussed when ordering. Drawings, approvals and amendments should be kept in the same file with version dates. Ask for verbal commitments to be confirmed promptly by email rather than trying to reconstruct them from memory later.
Unusual shapes need particular attention. With a triangular sloping fixed-glazed window the position, viewing side and relevant reference edges may be more important for ordering and installation than for a standard rectangular format. Record which dimension comes from which drawing and whether the contractor has accepted responsibility for site measurement. Before production approval, also consider the interaction with the reveal, sill, shading, internal lining and furniture. The aim is not to design every technical detail yourself. It is to give the appointed specialist a verifiable basis so that any later difference between the intended appearance, the order and the delivered item can be identified clearly.
Plan installation and building connections as separate responsibilities
A perfectly manufactured unit may still perform poorly in a building if measuring, fixings, sealing, threshold detailing or interfaces with neighbouring trades do not work together. Equally, not every leak at a building connection is a fault in the window or door. Ask in writing before appointing anyone: who is responsible for measurements? Who installs? What is the agreed scope of connection work? Who supplies and installs sills, seals, external connections or trims? If an existing structure is opened, clarify who assesses hidden damage and how additional work is authorised. These are project-coordination questions, not issues to leave until a defect is reported.
With a single inward-opening patio door the door swing, internal and external floor build-up, drainage and transition to the terrace may all need to be considered together. The product name confirms the opening direction, not every detail of the building connection. Ask the responsible specialist to identify the interfaces in a clear scope of work. Also record which design stage for the threshold, floor levels and adjacent finishes has been approved. If a later trade changes the build-up, check and document whether clearance, access or connection details are affected. Independent professional planning can be worthwhile for larger projects, especially where several trades work at once. A suitably qualified designer or contractor should assess technical and project-specific requirements. A guarantee condition replaces neither site measurement nor coordinated connection planning.
03 / Assign installation responsibility
Review exclusions carefully rather than overlooking them
Exclusions are not automatically a warning sign; they show what a commitment does not intend to cover. Typical exclusions distinguish normal wear, improper use, inadequate care, unauthorised changes, damage caused by external influences or consequences of defective building connections. The exact wording always governs. Ask how terms such as “intended use”, “maintenance” or “external influence” are used in the conditions. Unclear wording should be explained before ordering. Do not assume that every visible imperfection is a guarantee case, but do not accept a blanket rejection without a clear explanation either.
It is especially important to ask what may be changed after handover. Later-fitted hardware, films, privacy screens, drilling or alterations by third parties can make cause assessment harder. Anyone choosing a Patio Life lift-and-slide door should not only order the preferred opening arrangement, but should check before adding anything later that it is compatible with the manufacturer’s requirements and installation. The same applies to aggressive cleaning products or unsuitable adjustment tools. Keep care and operating instructions and pass them on to users, tenants or future owners. This does not guarantee acceptance of a claim, but it provides a sound basis for excluding avoidable points of dispute.
Record the start date and deadlines correctly
The key question is not only how long a guarantee lasts, but which event starts it. Does it begin on delivery, invoice, installation, handover or acceptance? Is there a separate rule for replacement or repaired parts? The answer must follow from the conditions and contract documents. Record the relevant date not only in a calendar app, but also retain the evidence: delivery note, installation record, handover record or invoice. Different construction stages can have different dates for different elements. A single overview prevents a deadline for a later-installed door being confused with the delivery date of an earlier window.
After the work is complete, prepare a short element schedule. It need not be complex: room or façade side, element number, product name, date, document folder and contact person are enough. This is particularly valuable where several similar elements are installed. A fixed-glazed window is described differently in a complaint from an opening sash, and the specific element number avoids unnecessary queries. Add whether delivery, installation and handover took place on the same or different days. Note where later repair reports or spare-part records are stored. This makes it clear which event belongs to which item without requiring you to make a legal assessment of a deadline. During the first weeks of use, document only observable points such as location, date, weather conditions when an unusual draught is noticed, or the operating sequence. A precise chronology supports assessment without prematurely asserting a technical cause.
04 / Document handover
Collect documents before anything is challenged
The strongest complaint file is not created only after damage occurs. Keep the quotation, order, order confirmation, technical data sheets, drawings, approvals, change agreements, delivery evidence, installation and handover records, invoices, guarantee conditions, and care and operating instructions together. Save digital files with meaningful names, for example by room and date. Photographs taken immediately after installation can document the condition if they are stored clearly and not mistaken for a replacement for expert assessment. It also matters who gave which instruction or approved which work and when. Individual chat messages should not be the only record of critical agreements.
Doors often involve further documents, for example for handles, sidelights or agreed accessories. If a single glazed door sidelight is ordered with a front door, assign both positions to one entrance assembly while keeping them identifiable as separate order items. This avoids an issue with the door being mistakenly attributed to the sidelight, or the other way around. When documentation is handed over, check that file names, element numbers and drawing revisions genuinely match. A collection of unsorted attachments is less helpful during a complaint than a short contents list. In an apartment or rented property, it should also be clear who keeps original documents and who receives operating and care instructions. A clear file cannot improve materials or installation retrospectively, but it shortens the time needed for an objective assessment and makes communication more robust.
Start a complaint with observable facts
Report an issue promptly in writing to the contractual contact. Describe the observation before your theory: which element, where, since when, in what circumstances, and how the behaviour can be reproduced. Attach photographs or short videos where they show the point, together with the element number and relevant order documents. For example: “Since 12 March, the sash of the study window no longer closes fully; photographs and the order confirmation are attached.” Separate several issues into individual points and state whether operation is merely difficult, moisture has become visible, or the element is temporarily not being used. This lets the recipient assess urgency and required documents without you having to claim a cause. Such a report is more helpful than simply writing “window defective”, because it prepares the assessment.
Request a reasonable response and keep proof of sending and any replies. Do not alter the component yourself unless this is necessary to prevent immediate damage or your contact instructs you to do so. Repeated adjustment, dismantling or sealing with unsuitable materials can make the original situation unclear. With a roof pivot window a precise description of its location, the operating sequence and the visible point of concern can be more helpful than remote diagnosis. If an inspection takes place, ask for written notes of findings, next steps and responsibilities. This keeps the discussion focused on a solution.
05 / Manage the complaint
Manage inspection, remedial work and documentation
An inspection is initially an investigation of the cause, not automatic acceptance of a claim. Prepare by arranging access, having documents ready and showing the reported condition as unchanged as possible. Briefly explain the sequence and allow the specialist to make the technical assessment. If the issue appears only in particular conditions, describe them factually. At the end, ask: what cause is suspected? Which points still need checking? What measure is proposed? Who will carry it out? When will feedback be given? Record not only commitments but also outstanding investigations. This prevents a simple appointment arrangement later being treated as a complete solution.
After an adjustment, repair or replacement, review the result together promptly and add to the record. Note which element was affected, what work was done and whether a further observation period is needed. With complex opening elements such as outward-opening folding doors it is sensible to have the operation explained again after the work, rather than merely testing whether the system moves once. Successful remedial work can leave follow-up questions about surfaces, connections or adjacent components; identify these separately. Sign a record only to the extent that you have actually checked it. If a point remains open, have it recorded as open.
Compare offers using a guarantee checklist
Before signing, a short written question list is worthwhile: who is the guarantor and who is the contractual party? Which windows and doors are precisely included? Which components, characteristics and situations are included or excluded? When does the period start? Which care and maintenance requirements apply? What evidence is needed for a report? What remedy is provided? How are measuring, installation and connection work divided? And who receives the first complaint? Ask for answers to be linked to the appropriate documents rather than given only in a sales discussion. This allows you to compare the real protection instead of marketing phrases.
Treat delivery planning as part of the overall project. Bloomcabin states a delivery time of 4–6 weeks, subject to order confirmation. Coordinate production approval, site readiness, the installation window and follow-on trades before setting firm dates elsewhere. For a panelled outward-opening front door, for example, clarify access, protection during the building phase and coordination with internal finishing with the responsible parties in advance. The product name confirms the stated configuration, not additional characteristics. Clear documents, a realistic sequence and named contacts provide the best basis for a straightforward assessment if an issue genuinely arises later.
Frequently asked questions
Does a five-year guarantee automatically cover every part of a window or door?
No. Duration alone does not describe which parts and situations are covered. Check the guarantee terms for the exact scope, possible different rules for components, exclusions and the remedy offered. Compare these details with the specific order and order confirmation.
Should I contact the manufacturer, retailer or installer about a complaint?
Start with the contractual contact named in your order or installation agreement. That party can coordinate further assessment. The guarantee terms may name a guarantor, but product supply, installation and building connections can involve different responsibilities. Send the report in writing and attach relevant documents.
Which photographs help with a complaint?
Take overview photographs to identify the element and close-ups of the issue. Add images of the element number, room or façade side and, where relevant, the operating position. Photographs should have a date and description. They do not replace expert cause assessment, but help record the condition clearly before inspection.
May I adjust a stiff sash myself?
First check the operating and care instructions and report the issue in writing. Unauthorised intervention can complicate identification of the cause. If a specialist guides or carries out an adjustment, have the work and result documented. Where there is immediate danger or a risk of consequential damage, protective measures naturally take priority.
What should be included in a handover record?
Useful details include the date, project address, identifiable elements, visible findings, outstanding points, agreed follow-up work and contact persons. Add existing documents such as operating and care instructions. A record should not broadly confirm that everything is finally defect-free if individual points have not yet been checked or addressed.
Next step
A sound guarantee review forms part of product selection and construction planning. Ask not only about duration, but about covered parts, exclusions, the start date, evidence and the remedy offered. Allocate the product commitment, purchase contract, installation and building connections to the responsible parties. A complete order file, clear element numbers and a factual defect report can prevent many misunderstandings. If a technical cause remains unclear, it should be assessed by the responsible specialist or another suitably qualified professional. This turns the term “guarantee” into a specific, verifiable part of your project.
