If you own an older HDB flat with casement windows, check whether the outward-opening window leaves still have aluminium rivets at the stays. BCA requires those rivets to be replaced with compliant stainless steel rivets. Have an approved window contractor assess and carry out any required retrofit.
A window that opens smoothly can still need a check. If you recently bought the flat, ask for any previous retrofit records, then have the contractor identify the fittings on the actual windows. Read BCA’s window safety guidance.
- Identify which windows are casement windows.
- Ask for previous window work records.
- Use a BCA-approved contractor for a retrofit assessment.
- Keep the completion records with your flat documents.
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Recognise the window before checking its fittings
A casement leaf swings out on its stays. A sliding panel moves along a track. Identify the type room by room so your contractor knows what to inspect. Avoid reaching outside or dismantling any part to identify the metal.
| What you notice | What to do |
|---|---|
| An outward-opening leaf with uncertain rivets | Ask an approved contractor to inspect its stays and fixings |
| A sliding window | Ask about the separate checks for tracks and safety devices |
| A loose or damaged leaf | Keep people clear and arrange a prompt professional assessment |
Use the records to ask a specific question
Suppose the seller says the living-room windows were replaced but has no records for the bedrooms. Give the contractor the locations and the records you do have. Ask which windows need attention and what completion documentation you should receive. BCA specifies type 304 stainless steel rivets meeting its stated standard or equivalent for retrofitting. See HDB’s requirements for window work.
Frequently asked questions
Can I identify the rivet by colour alone?
Ask the contractor to identify the fitting. Appearance alone gives you little certainty.
Do installation and replacement need an approved contractor?
HDB directs flat owners to use a BCA-approved window contractor listed in HDB’s directory.