Best Mattress Encasement for Bed Bugs (2026): Three Waterproof Covers That Fully Zip

An encasement does a different job from the fitted cover most people call a mattress protector. It wraps the whole mattress, then closes with a zipper. That matters when you want the sides and bottom covered as well as the sleep surface.

This is shopping advice based on product specifications and substantial Amazon buyer feedback, not a substitute for pest-control advice. If you think you have an active bed bug problem, use an encasement as one part of a treatment plan from a qualified professional.

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What makes a good mattress encasement for bed bugs

Start with the fit. An encasement that is too shallow puts stress on the zipper and seams. One that is far too loose can bunch under your fitted sheet. Measure your mattress height, including any attached pillow top, before you add a product to your cart.

Then check that it is a true six-sided design. A fitted protector covers the top and sides. A zippered encasement should cover the top, sides, and bottom, with a zipper flap or other guard that keeps the closure from opening accidentally.

Waterproofing is useful even if bed bugs are the reason you started looking. The encasement may stay on for a long time, and it is much easier to protect a mattress from sweat, spills, and pet accidents while it is already wrapped.

Finally, read recent fit reviews for your mattress depth. The ratings below clear 4.0 stars and have large review samples, but the most useful comments are from buyers with a mattress like yours.

Quick comparison

All three are queen-size, waterproof, six-sided encasements. The deciding point is not a vague promise of protection. It is whether the depth range, fabric feel, and wash routine suit the bed you already own.

SafeRest: best for a thick mattress

The SafeRest 15-18 Inch encasement is the easy first choice for a deep pillow-top, hybrid, or other tall queen mattress. It gives you more room at the corners than a 12-inch cover, so you are less likely to tug hard on the zipper during installation.

The surface uses cotton terry over a waterproof layer. That is a better bet if you dislike the smooth, synthetic feel of many inexpensive covers. SafeRest's live Amazon listing shows a 4.6-star rating from more than 17,000 reviews, with useful owner detail on deep-mattress fit, spills, and zipper use.

Choose SafeRest if: your mattress measures 15 to 18 inches deep and you want a cover you are less likely to notice under your sheets.

Skip SafeRest if: your mattress is 12 inches or less and the extra depth would leave too much loose fabric.

Linenspa: best value for a standard mattress

Linenspa is the practical choice when your mattress is no more than 12 inches deep. Its six-sided zippered cover is waterproof, machine washable, and backed by a 10-year limited warranty. It is also the strongest value pick here because you do not pay for extra material you cannot use.

The live listing holds a 4.6-star rating from more than 39,000 reviews. Recent owner feedback is especially useful for checking whether the cover stays quiet and whether the listed 12-inch limit works for the mattress you have. Do not assume it will stretch over a 14-inch pillow top just because it is flexible.

Choose Linenspa if: you have a standard-height mattress and want a proven encasement without paying for a deep-pocket model.

Skip Linenspa if: your mattress is taller than 12 inches after you measure it.

Utopia Bedding: best budget 14-inch option

Utopia Bedding sits between the other two on depth. Its 14-inch queen model costs less than many premium encasements while giving you more room than a standard 12-inch cover. The smooth knitted polyester fabric is designed to stay quiet, but it will feel different from terry.

Its live Amazon page shows a 4.6-star rating from more than 59,000 reviews. Buyers often mention fit, the full zip-around design, and leak protection. The honest drawback is the fabric: if you are sensitive to a synthetic sleep surface, pay more for the SafeRest instead of hoping this one will feel like cotton.

Choose Utopia if: your mattress is close to 14 inches deep and you want full coverage on a tighter budget.

Skip Utopia if: you specifically want a terry top or have a very thick mattress.

How to put an encasement on without tearing it

An encasement is easiest to install with two people, especially on a queen or king bed. Remove sheets and any topper first. Stand the mattress on its long edge if you can do so safely, then slide the open encasement over one corner at a time.

Zip it slowly once every corner is covered. Do not pull the zipper through a tight spot by force. If the cover feels too tight before it is halfway closed, stop and check the depth range rather than risking a torn seam.

After it is closed, put your fitted sheet on top. You can also add a fitted mattress protector over the encasement. That setup leaves the full cover in place and gives you a simpler top layer to wash after a spill.

Encasement vs mattress protector

A mattress pad changes the feel of the bed. An encasement does not aim to add comfort. It is a barrier that stays under your sheets, so choose it for coverage and fit rather than for a plush surface.

If those terms still blur together, read our guide to mattress protector vs mattress pad. The short version is simple: an encasement wraps the mattress, a protector sits over it, and a pad adds padding.

Care and safety checks

Follow the washing and drying directions printed on the specific cover. Waterproof membranes can be damaged by high heat or harsh bleach, even when the outer fabric looks fine. Keep a fitted sheet over the encasement and wash that sheet normally.

Check the zipper and seams when you change bedding. If the zipper has opened or the cover has a tear, replace it. A six-sided barrier only works when all six sides remain covered.

An encasement can support a bed bug prevention or treatment plan, but it cannot diagnose an infestation or make one disappear on its own. If you see signs of activity, get specific advice from a licensed pest professional instead of relying on a product page.

Final take

For a thick queen mattress, buy the SafeRest Zippered Mattress Protector, Queen 15-18 Inch Deep. Its depth range and terry surface make it the most comfortable long-term pick. For a standard-height mattress, the Linenspa Encasement Waterproof Mattress Protector offers the best value. The Utopia Bedding Premium Waterproof Bed Bug Mattress Cover is the budget choice when you need a little more depth.

Once the mattress is fully covered, keep the sleep surface cool and easy to wash with cooling sheets. If you only need everyday spill protection, compare the best mattress protectors before paying for a full encasement.