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Replacing cooktop. is a 2cm difference in cutout a big deal? (self.diy)

submitted 1 week ago by sanzky to c/diy

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Hello!

I plan to replace an electric vitroceramic cooktop for an induction one. Both are 60cm in width, but looking at their manuals, the current one specifies a cutout of 58cm while the new one says 56cm. Both specify the same height (49cm)

Now, thankfully I dont need to make the hole larger, but Im wondering if the extra 2cm will be a problem or not? The cooktop should cover the entire hole but Im not sure if it the extra space could allow it to move around. I'm hoping it would be ok (they tend to have an anti-slippery silicon thingy), but I prefer to ask if some has experience just in case.

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[–] Ashelyn@lemmy.blahaj.zone 4 points 1 week ago (1 children)

Disclaimer: I never installed cooktops but did have to work with the spec sheets frequently at a previous job that included kitchen design work.

It's a bit dependent on the specific model, and if there are any load bearing parts of the design that would normally fall onto the extra 2cm of countertop the new one is expecting. You should be able to determine that by looking underneath for anything of the sort.

I'd say in most cases you should be fine, as long as the flange covers the whole cutout, which it should in this case. If the new one feels loose, you could glue in some 1cm wood shims on either side just to keep it from sliding around.

[–] sanzky 1 points 1 week ago (1 children)

do you think glue would be enough? the top is granite so probably I cannot use screws

[–] Ashelyn@lemmy.blahaj.zone 4 points 1 week ago (1 children)

You might not even need them, it's more just an option if the unit wiggles around too much for your liking after dropping it in.

Definitely don't use screws or nails! Glue should be fine but you might need a method to hold them in place while it dries. Masking tape would probably do the job just fine; in fact, you could probably skip the glue and just tape the blocks into the gap from underneath the countertop. The latter case would definitely require careful inspection of the cooktop to make sure you're not covering up anything important.

The idea with the blocks/shims isn't to hold up the cooktop structurally, just to keep it from sliding side to side (and only if you need them, it might be perfectly fine without). The weight should still be primarily on the granite itself in all cases.

[–] sanzky 1 points 1 week ago

thanks for the input! I think you're right