I'm not exactly a lightweight (around 280 lbs) and I've been sleeping on a 10-inch memory foam mattress for a couple years. It's okay but started sagging where I lie. Now I'm seeing mattresses advertised as 14, 16, even 18 inches thick. Does that extra thickness really translate to better support for heavier folks, or is it just marketing? I don't want to spend a fortune on something that's just taller, not tougher.
Mattresses
Does mattress thickness actually make a difference
Thickness is often just a number to catch your eye. What matters is the density of the foam and the coil gauge if it's a hybrid. A cheap 14-inch mattress can sag faster than a well-built 10-inch one.
I'm about 250 and went From a 10" to a 13" hybrid. The difference for me was huge, but I think it's because the thicker model had a beefier support core. Not all thickness is created equal.
Agree with GrumpyPancake. Also, if you're heavy, a thicker mattress can help distribute weight and prevent bottoming out. But you gotta check the density specs. 10 inches of 1.5 lb foam is trash. 10 inches of 2.5 lb foam is decent.
OP, have you considered just flipping/rotating your current mattress? Might buy you time., But to answer: yes, thickness can matter for heavy sleepers because more material under you usually means more support, but only if the materials are good. Don't fall for the 'more inches = better' trap.
Thanks all. So it sounds like I should look at foam density and coil gaufe first, then thickness as a secondary factor. Any specific brands that are known for durable thick mattresses under $1500?
I'm 300+ and sleep on a 14" hybrid from a smaller brand. It's held up well for 3 years so far. The key was that the support layer was 8" of high-density foam. So yeah, thickness helped because they used the extra space for more support foam, not just fluff.
Let's be real: mattress companies know people equate thick with luxurious. So they make thick mattresses with cheap foam. But if you find one with good specs, thickness is a plus. Just don't pay extra for inches alone.
my husband is 270 and we got a 12" mattress that sagged in 6 months. Then we got a 14" from a different brand and it's been great for 2 years. So thickness mattered in our case, but again, brand and materials.
Correlation != causation. The thicker mattresses you tried probably just happened to be better quality. A 10" latex mattress will outperform a 14" polyfoam one any day for a heavy Person.
Appreciate the insights. I'll definitely focus on specs. I'm leaning toward a 12-14" hybrid with high-density support foam. Will report back if I pull the trigger.
Check the warranty too. Some brands won't cover sagging unless it's over 1.5 inches. For heavy folks, that can happen fast.
Also consider a mattress topper. A thick topper can add comfort without replacing the whole mattress, butt it won't fix a sagging core.
If you're handy, you could also add a bunkie board or plywood under the mattress to stiffen the base. Sometimes that helps more than thickness.
One more thing: thickness can affect how easy it is to get in and out of bed, especially if you're tall. 14 inches plus a box spring can be high.
Good point. I'm 6'2" and our 14" plus 9" box spring is pretty tall. Took some getting used to.
Also,heavier sleepers might want to avoid ultra-thick memory foam that sleeps hot. More thickness can mean more heat retention.