Help with Second DIY Build

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First time poster, but long time reader here. With the help of this site, I was able to build my first DIY mattress a few years ago during the pandemic. It’s still the best mattress I’ve slept on, however I’m now living with my partner in a different city without my DIY mattress, and we are looking to get a king-sized, as queen is too small.

My partner is 5’10" 160 pounds, and side sleeper, I’m 5’10" 195 pounds, 80 percent side sleeper, sometimes back sleeper. I have been suffering from low back pain for the last few months sleeping on my partner’s way too firm queen mattress, and I’d like to do a DIY build on a king mattress for us. I prefer softer and I think she prefers firmer, but she will fall asleep on anything.

Main issue is that I am conflicted between different “technologies” which impact our budget. Also I’m based in Canada which makes this all the more tricky, as shipping costs add to the budget, and I don’t necessarily want to be returning pieces of the build, as that would be quite challenging.

With that in mind, it comes down to this: Do I rebuild my current set-up, but as a King? Or, do I spend more on the TPS hybrid system? And if I go with TPS, how would I recreate the current feel of my current set-up?

Here’s my current queen DIY components, from bottom to top:

  • 8" Quantum Edge Elite Bolsa
  • 3" medium Dunlop latex (SleepOnLatex)
  • 3" soft Dunlop latex (SleepOnLatex)
  • Bamboo Mattress Covers × Queen / Bamboo Gel (Brentwood Homes)

The way I see it, I either recreate my current setup, but in King size, or I go with the different “technology” of TPS QuadCoil with Quadmini, something like this:

  • 8" TPS QuadCoil medium-firm with Firm Sides - 15.5g (pocket spring store)
  • 3" TPS QuadMini Luxury Layer
  • ???
  • Premium DIY Stretch Cover / or different cover

I have never used the TPS system, so I’m not sure what it feels like, or at least how to replicate my current build.
Does the QuadMini replace the medium dunlop layer? Would I only need a soft layer above?
I’ve seen builds from others that have two layers of 2 inches of latex or memory foam above the two layers of TPS coils, but is that needed?
The TPS build is considerably more expensive than recreating my previous build of 8" Bolsa coil with medium and soft latex above.

If you got this far, thank you for reading!
I’m open to any and all advice, as this is a big purchase for me.

@MFC

1 Like
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I recently did my own build with the cotton stretch cover, and the quadmini.

Im gonna save you some money. I dont believe the quadmini is necessary. I think you can get the 15.5g spring on its own, then a 2" layer of HD-36 foam, and then a 1.5" layer of convoluted HD-36 foam and put the convoluted part face down. Standard hd-36 has an ild of 35 so when they convolute it that makes it feel like 20ild. Which means you have your 35ild transition layer with your 20ild comfort layer on top.

Then for your cover, search up bamboo mattress encasement on walmart.com i thought the reaks bamboo mattress protector looked pretty good

Either that or cotton mattress encasement

Or this

Or this

You can do that, or you could just get a bed from nest and wild which takes all the guess work out of it. Its the perfect blend of soft and supportive for any weight. Thatd cost about 1200 but its just an extremely easy recommendation.

If you put it together yourself with what i recommended, the springs will cost about 500, then foams will be about 120, and the encasement will be about 50 so total cost of 670. But i mean you dont even have to pick the foams i recommended. You could put a 1" layer of foambymail medium latex on top of a 1" layer of 5lb viscomax memory foam.

You figure it out for yourself but i think this should be a bit helpful. If you were to get the quadmini you just need a 2" layer of any foam on top of that.

Some people said they had issue with the quadmini on top of the 15.5g but im not sure, ive also seen some say it worked for them.

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Dude, i just had an idea. The birch luxe has coils, with a layer of medium latex and a layer of soft talaylay latex on top. Try to find one of those on facebook marketplace.

Recently i was looking and found multiple nearby for very cheap. Facebook marketplace is surprisingly good for finding mattresses.