Ember screens for doors and windows near Illawarra bushland.

For a Wollongong home near the escarpment, a screen replacement can prompt a broader question about the purpose of the work. Is this an insect-screen repair, an existing-home improvement or part of an approved renovation? Put that purpose at the top of the enquiry. The same photograph can otherwise produce quotes for quite different scopes. Keep the property address and opening locations together with any relevant building documents so the supplier and the responsible assessor are discussing the same parts of the house.

Start here: is your land bush fire prone?

Start with the NSW RFS bush fire prone land tool. Save the dated result and check that the correct lot was selected. The RFS identifies a council planning certificate as the definitive mapping record. Mapping is a starting record, not a BAL assessment or a screen specification. If the address or boundary is uncertain, resolve that before using the result in a building enquiry.

A view of vegetation from a window is not enough to choose a construction requirement. Equally, an unmapped result should not be treated as proof that a property has no bushfire risk. Keep uncertainty visible in your notes and ask the appropriate professional how the proposed work should be assessed. When comparing quotes, send each supplier the same information. A low price based on an insect-screen brief cannot be compared fairly with a quote responding to a documented bushfire construction requirement.

Existing home or new work: why the difference matters

For new work or alterations, obtain the project-specific requirements from the responsible bushfire professional and certifier before ordering. Ask which documents apply to the opening, what evidence the screen supplier must provide and whether the proposed fixing detail is covered. Do not select a BAL from an online checklist or assume a neighbour's assessed level applies. If approval documents mention several building elements, identify which items belong to the screen contract and which need another trade. Resolve any contradiction between a brochure and the project documents before fabrication.

The linked RFS existing-building upgrade guide, dated September 2014, offers voluntary improvement options. It expressly does not establish comprehensive risk assessment or compliance. Its historical standards references should not be used as the current specification for new work. For an existing home, discuss how proposed screen work relates to any applicable approvals, building condition and other measures rather than concluding that no obligation can apply because the house is old.

What the RFS describes for doors and windows

One example in that historical guide is corrosion-resistant steel, bronze or aluminium mesh with openings no larger than 2 mm for external doors and openable windows. That is a description to discuss with an assessor, not a product certificate. An order should identify the actual manufacturer, model and supporting documentation. Avoid replacing the precise product reference with a generic label such as metal screen; it makes later verification and replacement unnecessarily difficult.

Aperture and product identity. Ask the supplier to identify how the opening size is documented for the product offered. A household ruler against a sample is not a substitute for product evidence. Keep the specification sheet with the quote, including its date or version. If the supplier changes the proposed mesh after the quote, ask for the revised reference and have its suitability confirmed before installation. Similar appearance does not establish that two products have the same construction or performance.

Material and environment. A material name alone leaves questions about the exact grade, finish, fixings and compatibility with the frame. Ask the supplier to address the observed conditions at this opening, including deposits, shelter and access for care. Do not assume bronze or stainless provides a universal service life or that aluminium is always unsuitable near the sea. Compare the documented conditions for the actual assembly and record any warranty exclusions that affect the proposed location.

An opening schedule. Give each opening a simple identifier, such as bedroom east window or laundry side door. Record whether it opens, the existing screen type and any visible damage, then match those identifiers to the quote. Include less-used doors and windows rather than selecting only the most obvious elevation. The purpose of the schedule is to prevent items being overlooked or counted twice. It does not decide the required treatment; the responsible assessment must cover the relevant building and project scope.

Gap treatment needs a separate detail. The historical guide excludes subfloors from its general gap-sealing instruction and addresses them separately. Never turn a general screening suggestion into an instruction to block drainage, weepholes or required ventilation. Ask a qualified professional to identify what each opening does and specify a suitable treatment. Keep unknown openings marked as questions in the record. A photo can help locate one, but it cannot establish that filling or covering it is appropriate.

Evidence to request for each screen

Use the comparison below to request evidence, not to mark products as passed or failed. Ask what the complete screen assembly has been assessed for and whether its intended installation matches your opening. For approved work, send the documentation to the responsible certifier or assessor for confirmation. Where a substitution is proposed, keep the original and revised references together with the written decision. A verbal phrase such as bushfire rated leaves too much unspecified to support an order on its own.

Gaps defeat good mesh

Inspect visible screen edges from a safe standing position and record damage or separation without trying to assign a performance rating. An uneven gap can involve the frame, supporting opening, hardware or installation. Do not assume packing, sealant or a replacement hinge is automatically the answer. Ask who will assess the cause and specify the repair. If the frame needs work, establish whether the final screen measure should occur afterwards so a supplier does not fabricate against dimensions that will change.

A torch may make some visible gaps easier to photograph. Light is an observation, not proof that every ember route has been found, and the absence of visible light is not a safety test. Record the location and ask for assessment. Do not seal a gap simply because light appears, since the area may have a drainage or ventilation function. Avoid dismantling a screen or reaching outside an upper window to inspect an edge. A site visit can cover locations that cannot be viewed safely.

Record dents as well as tears or loose corners. A dent may affect the mesh, its retention or the frame, so do not automatically dismiss it as cosmetic. Photograph the whole opening and a close view of the affected area if both can be taken safely. Include when the damage appeared and whether the screen still operates normally. Ask whether a repair can preserve the intended assembly or whether replacement is required. Keep the repair details with the original product documents.

Bushland and salt air in the same street

Where the property experiences both coastal deposits and bushland exposure, include both in the brief rather than selecting a material from one condition alone. Ask for a care method that is permitted for the actual screen and supporting components. Fresh water is not a universal instruction for every lock, seal, guide or finish. Confirm who can reach the outside face safely and whether professional servicing is needed. Maintenance access is worth resolving before installation, especially where fixed panels would make later inspection difficult.

For sheltered or shaded openings, record accumulated debris, staining and any movement without assuming the mesh will last longer away from salt. Keep photographs from the assessment so future changes can be compared with the starting condition. Ask the supplier which visible changes warrant a service call and what cleaning is permitted. Separate simple accessible care from work at height, gutter access or building repairs. Those tasks may need a different contractor and should not be bundled into an informal instruction to walk around with a ladder.

Fixed windows, sliders and the openings people forget

Include fixed glazing and adjacent construction in the wider discussion when the project assessment requires it. A screen-only contractor may not be responsible for glazing, wall junctions or other building elements. Ask where their scope ends and which person will assess the remaining items. Do not apply a universal gap size from a summary to every junction or fill an opening without understanding its purpose. A written scope boundary helps prevent each trade assuming another has dealt with the unresolved detail.

A sliding patio opening has several parts worth identifying separately: the main door, fixed panel, insect or security screen, tracks and meeting edges. Ask which of these the quoted work covers and whether any existing component is being retained. Record operating problems such as dragging or incomplete closure without diagnosing worn rollers from appearance alone. If the screen material is unknown, mark it unknown. Confirming a product reference or arranging inspection is more useful than assigning a material from colour or touch.

Handover and ongoing records

After installation, request a handover that ties each opening to the supplied product and care instructions. Check that the promised documentation, approved changes and any repair records are present. Walk through ordinary opening and closing with the installer and identify whom to contact if something binds or loosens. Keep a dated record of subsequent damage and repairs. This provides continuity when a household changes occupants or another contractor services the screen; it does not replace the broader property assessment or emergency planning.

Opening-by-opening ember checklist

Tick the records you have gathered below. The output lists recorded and unresolved questions in the same order, without a risk score or invented priority. All boxes ticked still means only that this limited discussion record is complete. It does not determine BAL, confirm compliance or establish safety. Changing a box clears the previous downloadable result.

Hypothetical example: a brick house backing onto a bushland reserve

Hypothetical example

A 1970s brick house on a sloping block in the western suburbs backs onto a bushland reserve. The owners check the RFS tool and the lot is mapped bush fire prone. They are not renovating. The house has fibreglass flyscreens on every window, a stainless security door on the front, a sliding aluminium screen on the back patio door, and a gap under the laundry door you could slide a coin through.

The owners record the product references they can find and mark the rest unknown. They arrange advice on the proposed scope before deciding which screens to replace. The laundry gap and sliding-door problem are recorded for assessment, not automatically assigned a seal or roller repair. They ask specifically about drainage and ventilation near the back wall and keep those openings untouched pending an appropriate detail. The resulting quote can separate screen supply, frame repairs and other building work, with each responsibility identified instead of assuming one mesh order resolves the whole property.

Mistakes and remedies

If security, insects or access are additional requirements, put them in the same brief so they are considered together. A change made for one purpose can affect the complete assembly. Discuss inside release and any relevant escape requirements before adding fixed screening or unfamiliar locks. Use the lock planning guide to record how the household uses the opening, and send those observations to the responsible professional alongside the construction documents. An online tool cannot resolve those requirements from a few tick boxes.

Ember screen questions