ᐅ IKEA DOMSJÖ is suitable only for countertops with a thickness of 3.8 cm.

domsjö undermount sink and HAMMARP countertop 2.8cm (1.1 inches)

I’m struggling with the choice of countertop. According to IKEA, only 3.8 cm (1.5 inches) thick countertops are suitable, and the IKEA staff said that the in-house installers also confirmed it wouldn’t fit.

Personally, I think it should work, as that’s how it appears in the showroom. The sink only drops about 1 cm (0.4 inches) lower, and there should be enough clearance. It is also said that the induction cooktop won’t fit because there isn’t enough clearance underneath.

If the prices of the countertops weren’t so different, I would obviously choose the 3.8 cm (1.5 inches) option right away.

But we need a total of 5 meters (16.4 feet) on both sides, which means for HAMMARP, 2 x €129 for solid oak. The 3.8 cm (1.5 inches) thickness is supposed to cost €160 per meter.

Has anyone installed the combination of the 2.8 cm (1.1 inches) countertop and undermount sink? Or does it actually cause problems?

Primarily due to the installation requirements for the induction cooktop, you should choose the 38mm (1.5 inches) thick countertop (warranty, etc.). The additional cost is offset by the usually quite long service life – if the budget is very tight, you might have to consider a Karlby countertop with thick oak veneer instead...

I just found out that if the oven is not installed under the induction cooktop, the installation regulations require a minimum of 28mm (1.1 inches).

Our oven is located elsewhere, so we’re safe there.

Karlby is the alternative, but it looks quite different from real wood.

So, the only remaining issue is with the sink.