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Unable to change window grill

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Hi everyone. 
i’m super new to this forum pls forgive if this topic is under wrong category 

recently bought this house and when we were about to engage contractors to change our living room windows we bumped into a huge roadblock. I’ve attached pics of my living room window

basically we are unable to change the window or window grills because its attached to the concrete. Apparently we need to engage with PE (precision engineering) to even remove the grills which will cost more than $3k.

we went to check with 2 of our neighbours below to see whether their window grills looked like ours. I’ve Attached my neighbours windows and its not the same as ours (the below part)

is there any other alternatives for this? How can we refurbish the windows and grills if we are unable to change?









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FYI, PE is Professional Engineer.

which part of the grille you want to change? top or bottom of both?

the top part seems to be just screwed onto the beam and walls so changing that should not be a problem. the bottom part is cast inside the concrete kerb so you can't change that. if your neighbours have the same bottom grille, it means it was installed by HDB during the construction and this is meant to be a safety barrier and not to be removed. if you want to remove this grille, you need to get a PE to redesign a new safety barrier and/or change your bottom windows to laminated safety glass which is compliant and can act as a barrier.


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Actually TS any update? You managed to remove the grilles? If yes what did it cost you if you do not mind me asking


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