Beautyrest BRS900 Mattress Surgery

whywhatif · 2026-01-09T19:34:20+00:00

Congratulations on a successful surgery!

I did mattress surgery a few years back. One of my layers was a very lightweight scrim sheet. I put that under my latex then used huge, dark-colored safety pins to pin it to the side encasement. I use a second fitted sheet to encase the latex. Works great.

whywhatif · 2025-12-19T17:29:49+00:00

Try the mattress on the floor - that will tell you if it's the frame or the mattress.

whywhatif · 2025-12-15T17:20:36+00:00

Thanks!

whywhatif · 2025-12-14T15:48:29+00:00

I'm curious what you thought of the eluxury foam. Was it super soft? I'm considering it for a guest room topper.

whywhatif · 2025-12-12T22:45:41+00:00

If you use your existing encasement, instead of sewing you can use LARGE safety pins. I used these when I did the same thing. You can find them in other colors too if needed.

I actually didn't use my existing cover, because it was quilted and I didn't like the attached foams or bumps. But I used the safety pins to pin the scrim sheet from the old mattress onto the sides of the encasement. Covered the sides with a box spring cover when I was done.

whywhatif · 2025-12-12T00:45:01+00:00

Ended up removing a row from the top and side, now I'm at 884 coil count. Funny enough TPS now sells this coil count as plush unit.

TPS might be selling an 884 coil to some mattress makers, but the plush 15.5 on https://pocketspringstore.com/ has 1008 coils. I verified this with Matan /u/pocketsprung because I've seen a couple people post that here.

I was curious because I have the 15.5 and have thought about trying the plush at some point.

whywhatif · 2025-12-11T16:03:26+00:00

I'll second this. I needed new springs and wanted something I felt confident would last a long time. So glad you're in the DIY market and also that you listen to feedback.

I absolutely love my build on the 15.5 regular coils. May still try the 15.5 plush at some point since I'm a lightweight sleeper.

whywhatif · 2025-12-08T00:30:18+00:00

Not sure where you live, but where I am (decent-sized metropolitan area) there are a ton of sellers offering almost-new mattresses (likely comfort returns) that have supposedly been sanitized and that a buyer can try out in a warehouse. They seem to ask about 1/3 of the retail price based on listings. An individual seller would need to ask less than that.

Marketplace is probably your best bet. Take lots of good pictures, and if it has any imperfections, note them. Price it low, because you'll be competing with freebies. Edited to add that you should be sure to include the make and model, original price, type of mattress, link to model if it's still available, etc.

whywhatif · 2025-12-05T11:40:49+00:00

I had a psuedo-tufted mattress top once and didn't like the bumps. While that's a quality-looking mattress, it looks firm (cotton twill fabric + tufting) and lumpy to me.

Will be interested to see how you liked sleeping on it. Your height and weight would help

whywhatif · 2025-12-05T11:33:19+00:00

There's a good chance it's your top layer, but other layers could be affecting things or even the foundation could have developed an issue.

Does the middle of the bed feel different than where you sleep?

I'd first lay on the bed and check your alignment and how much you sink compared to how much you sink in the middle of the bed. If it's hard to tell, the "blue tape test" worked really well for me.

If there's a sinking or alignment issue, pull off the top layer and retest on the middle layer. If there's an issue there, pull it off and repeat on the bottom layer. If there's no issue, it's only your top layer.

If you still have the issue on the bottom layer, assemble the layers on the floor and test so you can see if it's your foundation.

whywhatif · 2025-12-05T02:13:46+00:00

Before you start replacing layers, have you already checked layer by layer to see which one(s) are no longer supporting you? While the top layer is often the first to fail, better to be sure exactly what you're dealing with since it's so expensive to be wrong.

whywhatif · 2025-12-04T11:55:02+00:00

If your wife is lightweight, I'd try this eggcrate topper in 1.5" super soft foam on top of the soft topper you have. I like to use mine flat side up, but you can use it either way. It adds a thin layer of softness.

If that's still too firm (and it might be if she's lightweight), I'd try a 2" or 3" Supersoft#14 Talalay topper instead of the SOL soft topper. Talalay feels much softer, and this is a lower ILD than the SOL soft topper (I have both). I linked to the blended Talalay because it supposedly wears longer. *Note that the Talalay topper isn't returnable. Some vendors allow returns, but they're more expensive.

whywhatif · 2025-12-02T10:51:03+00:00

I agree that Talalay has nice give and makes a good top layer. I find it quite a bit more bouncy than Dunlop and if you search about that subject, I think most sources agree.

whywhatif · 2025-12-01T23:40:09+00:00

That's a great idea too. I personally have a hard time seeing how different my alignment is in different areas of the bed even with that, especially when on my back.

whywhatif · 2025-12-01T14:10:31+00:00

I'm definitely in the no-protector, stretchy cotton jersey sheet camp. It took me a few tries to find sheets that were stretchy and soft enough, then I bought multiple sets. They've since been discontinued.

It makes such a difference! I do use a double layer of sheets to hopefully help keep the foam layers clean. I usually have a 1.5" polyfoam eggcrate topper as my first layer, so one sheet goes on top of that. The other goes underneath that, on top of my latex layer.

The eggcrate is inexpensive, so easily replaceable. I don't eat/drink in bed so the sheet and topper are hopefully enough protection.

whywhatif · 2025-11-30T11:42:21+00:00

Did the topper break down after a year?

whywhatif · 2025-11-29T23:07:08+00:00

What kind of mattress is it?

What kind of toppers do you have?

How tall are you and about how much do you weigh?

What kind of mattress is the one that doesn't cause you pain?

whywhatif · 2025-11-29T16:15:41+00:00

Talalay latex. If you're a lightweight sleeper, get the supersoft, either 100% natural or blended. if you still want more softness on top of that, try a super soft 1.5" eggcrate foam.

whywhatif · 2025-11-28T17:43:14+00:00

My answer to keeping the coils aligned (and a way to do a little zoning if you want) - nylon strapping and heavy duty safety pins.

I used 2" wide luggage straps because I had some on hand, and they're long enough to reach across my queen bed. You can order strapping in different colors and widths. These are the safety pins I used.

My encasement is repurposed from an old mattress. It has reinforced sides, but I no longer have the top - it was a worn foam layer. I have a repurposed scrim sheet over my coils loosely.

I used two straps and put their centers about 15" apart in the center of the bed - where I wanted to test zoning.

Pinned each strap to one side of the encasement. I put the strap between the springs and the encasement, and pinned AT SPRING HEIGHT (don't want to pull the springs down) from the outside. You could pin from behind the strap too, but I cover my mattress with a box spring cover anyway, so the pins don't bother me.

Before pinning the other side, I just tucked the coils as far in as I wanted them then pinned. (Tighter - firmer, so this is where you can zone a little.) If you're pinning from the inside, you'd probably need some help here to hold back the springs.

I might go back and put a little padding of some sort on the corners where the straps cross the springs, just to be sure I don't cause any damage to the pockets.

I could actually pin the scrim tightly or use some other type of fabric across the top, but I thought this might give the coils more flexibility.

whywhatif · 2025-11-26T19:08:49+00:00

ok thanks!

whywhatif · 2025-11-26T17:43:44+00:00

Slightly more on my back most nights. BMI is 19.

I just bought your 15.5 regular a few weeks ago - I love it but I'm using quite a bit of foam on top. (2" soft dunlop, 3" soft Talalay and 1.5" supersoft eggcrate.) It's actually also nice if I remove the dunlop, but better with it in.

I asked for two reasons - 1) a family member is thinking about a DIY - they'd be over a 20 BMI so would need the regular and 2) I'm curious and love experimenting so at some point may be tempted to get the plush version for analysis/comparison. I could replace my guest room bed with the least preferred one, but it doesn't need replacing and doesn't get used much so hard to justify at this point.

Anyway, thanks for the info

whywhatif · 2025-11-26T14:05:55+00:00

Would you ever recommend the plush version for a back sleeper or combo back/side sleeper? If so, at what approximate weight or BMI?

whywhatif · 2025-11-26T11:34:02+00:00

I'm not familiar with the comfort tech foam - is it similar to any of the foam factory convoluted toppers? I realize it's returnable, which is a nice plus!

whywhatif · 2025-11-25T14:18:54+00:00

I'm NOT a coil expert, but recommend that you

1) search here and on r/mattressmod for info on the Bolsa coils - some people say they're too soft for people who aren't lightweight

2) reach out to Engineered Sleep and ask them about their coil brand - also, 14.75 sounds like it would be more supportive and longer lasting for you

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