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, people often look first at opening style, appearance and glazing. Yet the whole order matters for later protection: which specification was agreed, who measures, 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 quality promise for an entire building project. It is a separate written commitment with a term, conditions and limits. Depending on the contract and applicable law, statutory rights for defective goods may also apply. Separating these levels and recording the interfaces between the product, installation and other trades helps you compare offers and deal with problems methodically.
01 / Compare documents
Separate guarantees, legal rights and goodwill
Guarantees and statutory rights concerning defective goods are often treated as the same, although they serve different purposes. Here, a guarantee is the provider’s separate written commitment; its wording sets the covered qualities or parts, claim conditions and remedy. Other rights may arise from the contract and applicable South African consumer law, depending on the transaction. Consumer protections can include remedies for inferior, unsafe or defective goods in covered cases. The position may differ between a product-only purchase, supply with installation and a wider building contract. “With a guarantee” is therefore not enough for a buying decision: request the full terms before ordering and read them with the quotation and order confirmation.
Goodwill is different again. It may produce a practical solution, but it is not pre-agreed binding cover. Do not assume that every later adjustment or cosmetic change will automatically be carried out free of charge. A simple project file with three sections is useful: product commitment, contract and installation agreement. Record the contact person for every component. For example, a supplier may be responsible for the specified entrance-door set, while the installer owes a separate service. This distinction may seem formal, but it helps prevent a complaint from being passed between several parties.
Scope matters more than the term
A five-year guarantee for windows and doors is comparable only where its subject is described equally precisely. Bloomcabin provides a five-year guarantee for windows and doors. Also ask whether the commitment concerns the complete element or particular components, and whether hardware, seals, glazing, finish, frame, threshold and accessories are treated differently. Check whether it covers a material or functional deviation, or only a stated characteristic. A product title such as single-leaf inward-opening window describes its configuration, but does not automatically establish every feature later regarded as agreed. Those details must appear in the order documents.
Read the remedy as carefully as the cover. Terms may provide for repair, replacement of the affected part or another remedy; this does not necessarily create a right to a completely new unit or work to adjoining building elements. Clarify whether the guarantor carries out the assessment, whether a site visit is planned, and how costs for removal, refitting, access or ancillary work are dealt with. A useful offer comparison therefore has columns for “guarantee document received”, “covered parts” and “remedy offered”. This reveals whether commitments with apparently identical terms have the same practical value.
02 / Specify 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 allocate opening direction, number of leaves, dimensions, frame appearance, colour or finish, glazing, divisions, handles, fittings and special accessories. For decorative features, distinguish between surface-mounted bars and bars that divide the glass. “No bars” is also a relevant specification where the appearance was discussed when ordering. Drawings, approvals and variations should be filed together with version dates. Have verbal commitments confirmed promptly by email rather than trying to reconstruct them from memory later.
Special shapes need particular attention. With a fixed triangular and angled window position, viewing side and key reference edges may matter more for ordering and installation than with a standard rectangular format. Record which measurement comes from which drawing and whether the contractor took responsibility for the on-site measurement. Before production approval, also check 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 professional a verifiable basis so that any later difference between the intended appearance, order and delivered element can be clearly assessed.
Plan installation and building connections as separate responsibilities
A correctly manufactured element can still perform poorly in a building if measurement, fixing, sealing, threshold connection or interfaces with adjoining trades do not work together. Conversely, 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 measurement? Who installs? What connection work is included? Who supplies and fits sills, sealing, external connections or trims? Where an existing structure is opened, agree who assesses hidden damage and how additional work is approved. These issues belong in project coordination, not only in a defect notice.
With a single-leaf inward-opening patio door the door movement, internal and external floor build-ups, drainage and transition to the patio may need to be considered together. The product name confirms the opening direction, not every detail of the building connection. Ask the responsible professional to identify the interfaces in a clear scope of work. Also record which design stage for the threshold, floor level and adjoining 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 design can be useful on larger projects, especially where several trades work at once. A suitably qualified planner or contractor should assess technical and project-specific requirements. A guarantee condition does not replace measurement or coordinated connection design.
03 / Allocate installation responsibility
Review exclusions rather than overlooking them
Exclusions are not automatically a warning sign; they show what a commitment does not intend to cover. Common exclusions concern ordinary wear, improper use, inadequate care, unauthorised alterations, damage from external influences or the consequences of defective building connections. The exact wording remains decisive. 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 every visible imperfection is a guarantee claim, but do not accept a blanket refusal without an understandable reason.
It is particularly important to ask what may be changed after handover. Later-added fittings, films, privacy screening, drilling or alterations by third parties can make cause analysis harder. Anyone choosing a Patio Life lift-and-slide door should not only order the desired opening type, but should confirm before later additions whether they are compatible with the manufacturer’s requirements and installation. The same applies to aggressive cleaning products or unsuitable tools for adjustment. Keep care and operating instructions and pass them on to users, tenants or later owners. This does not guarantee acceptance of a claim, but it provides a sound basis for avoiding preventable disputes.
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 with delivery, invoice, installation, handover or acceptance? Is there a separate rule for replacement or repaired parts? The answer must come from the terms 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 elements may have different dates on phased projects. One overview prevents a deadline for a later-installed door being confused with the delivery date of an earlier window.
After completion, create a concise element schedule. It need not be complicated: room or façade side, element number, product name, date, document folder and contact person are enough. This is especially valuable where several elements are similar. A fixed-glazed window is described differently in a complaint from an opening sash; the specific element number avoids queries. Add whether delivery, installation and handover occurred on the same day or on different days. Record where later repair reports or spare-part evidence are filed. This keeps clear which event belongs to which item without requiring you to make a legal assessment of a deadline. During the first weeks of use, record only observable points such as location, date, weather conditions when an unusual draught is noticed, or the operating sequence. A precise timeline supports assessment without prematurely asserting a technical cause.
04 / Document handover
Collect documents before anything is disputed
The strongest complaint file is not created only after damage occurs. Keep the quotation, order, order confirmation, technical data sheets, drawings, approvals, variation agreements, delivery evidence, installation and handover records, invoices, guarantee terms, and care and operating instructions together. Save digital files with clear names, for example by room and date. Photos taken immediately after installation can document condition if they are filed clearly and not mistaken for a professional assessment. It also matters who gave which instruction or approved work, and when. Individual chat messages should not be the only record of critical agreements.
Doors often have further documents, such as those for handles, sidelights or agreed accessories. If a one-piece glazed door sidelight is ordered with an entrance door, allocate both items to the same entrance assembly while keeping them identifiable as separate order positions. This prevents an issue with the door from being mistakenly attributed to the sidelight, or vice versa. At handover, check that file names, element numbers and drawing versions actually match. A loose collection of unsorted attachments is less useful in a complaint than a short contents list. For a sectional-title home or rented property, it should also be clear who keeps originals and who receives operating and care instructions. A well-organised file cannot improve materials or installation retrospectively, but it shortens the time needed for a factual assessment and makes communication more robust.
Open a complaint with observable facts
Report an issue promptly in writing to the contractual contact person. Do not begin with your suspected cause; describe the observation: which element, where, since when, under what conditions and how the behaviour can be reproduced. Include photos or short videos where they show the point, as well as the element number and relevant order documents. For example: “The sash on the study window has not closed fully since 12 March; photos and the order confirmation are attached.” Separate several issues into individual points and indicate whether operation is merely difficult, moisture is visible or the element is temporarily unusable. This helps the recipient assess urgency and required documents without you having to claim a cause. Such a report is more helpful than “window defective” because it prepares the assessment.
Request a reasonable response and retain proof of sending and replies. Do not alter the component yourself unless immediate damage limitation is necessary or your contact person instructs you to do so. Repeated adjustment, dismantling or sealing with unsuitable materials can make the original condition unclear. With a centre-pivot roof window a precise statement of location, operating sequence and visible position of the issue can be more useful than a 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, rectification and records
An inspection is first an investigation of cause, not automatic acceptance of a claim. Prepare by providing access, laying out the documents and showing the reported condition as unchanged as possible. Explain the sequence briefly and allow the professional to make the technical assessment. If the issue appears only in particular conditions, describe them factually. Ask at the end: what cause is suspected? What still needs checking? What measure is planned? Who will carry it out? When will a response follow? Record not only commitments but also open investigations. This avoids a simple appointment being treated later as a complete solution.
After an adjustment, repair or replacement, check the result together promptly and add to the record. Note which element was affected, what work was completed and whether a monitoring period is still needed. With complex opening elements such as outward-opening folding doors it is sensible to have operation explained again after the work, rather than merely checking that the system moves once. Successful rectification may leave follow-up questions about finishes, connections or adjoining components; identify these separately. Sign a record only to the extent you have actually checked. If an issue remains open, have it recorded as open.
Compare offers using a guarantee checklist
Before signing, prepare a short written list of questions: who is the guarantor and who is the contractual party? Which windows and doors are covered exactly? Which parts, characteristics and cases are included or excluded? When does the period begin? Which care and maintenance requirements apply? What evidence is needed for a report? What remedy is provided? How are measurement, installation and connection work allocated? Who receives the first complaint? Ask for answers to be linked to the relevant documents, not merely stated during a sales conversation. This lets you compare real protection rather than slogans.
Treat delivery planning as part of the overall project. Bloomcabin delivery takes 4–6 weeks, subject to order confirmation. Coordinate production approval, site readiness, the installation window and follow-on trades before committing to dates elsewhere. For an outward-opening entrance door with a panel, for example, clarify access, protection during construction and coordination with internal finishes with the responsible parties in advance. The product name confirms that configuration, not additional characteristics. Clear documents, a realistic sequence and named contacts create the best basis for a straightforward assessment if an issue later arises.
Frequently asked questions
Does a five-year guarantee automatically cover every window or door part?
No. Duration alone does not describe which parts and cases are covered. Check the guarantee terms for the exact scope, any different rules for components, exclusions and the intended remedy. Compare these details with the specific order and order confirmation.
Should I contact the manufacturer, supplier or installer about a complaint?
Start with the contractual contact person named in your order or installation agreement. They can coordinate the next assessment. The guarantee terms may name a guarantor, but product supply, installation and building connection can involve different responsibilities. Send the report in writing and attach relevant documents.
Which photographs help with a complaint?
Take overview photos to identify the element and close-ups of the issue. Add photos of the element number, room or façade side and, where relevant, the operating position. Give photographs dates and descriptions. They do not replace professional cause assessment, but help preserve the condition 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 cause assessment. If a professional guides or carries out an adjustment, have the work and result documented. Where there is immediate danger or risk of consequential damage, protective action naturally takes priority.
What should a handover record include?
Useful details include the date, project address, identifiable elements, visible findings, outstanding points, agreed follow-up work and contact persons. Add documents already provided, such as operating and care instructions. A record should not broadly confirm that everything is finally defect-free if individual points remain unchecked or unresolved.
Next step
A thorough guarantee review forms part of product selection and construction planning. Ask not only about duration, but about covered parts, exclusions, start date, evidence and the intended remedy. Allocate product commitment, purchase contract, installation and building connection 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 uncertain, it should be assessed by the responsible professional or another suitably qualified expert. This turns the word “guarantee” into a practical, verifiable part of your project.
