ᐅ Should expansion joints in hardwood or laminate flooring be sealed with silicone after installation?
Created on: 5 Feb 2026 09:31
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pysteinAssuming laminate flooring (or parquet) has just been installed in a room.
Now I am concerned that at some point a glass of water or a wine bottle might tip over, and the liquid could seep into the seams/gaps and cause the wood to swell.
Is it therefore advisable to seal the laminate/parquet again after installation?
Which (specific) products are suitable for this?
Parquet oil is basically meant for sealing the surface only, not the seams/gaps.
Can parquet oil even be used on laminate?
Now I am concerned that at some point a glass of water or a wine bottle might tip over, and the liquid could seep into the seams/gaps and cause the wood to swell.
Is it therefore advisable to seal the laminate/parquet again after installation?
Which (specific) products are suitable for this?
Parquet oil is basically meant for sealing the surface only, not the seams/gaps.
Can parquet oil even be used on laminate?
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nordanney5 Feb 2026 10:20pystein schrieb:
Assuming laminate flooring (or parquet) has just been installed in a room. Floating or glued? Click-lock or tongue and groove?pystein schrieb:
Now I’m worried that someday a glass of water or a bottle of wine might tip over, and the liquid could seep into the seams/joints and cause the wood to swell. That can always happen. But you can also wipe up the liquid right away. Otherwise, the possible consequences depend on the answer to the first question.pystein schrieb:
Is it therefore advisable to seal the laminate/parquet again after installation? Not physically possible, so the question of whether it makes sense is redundant.pystein schrieb:
Can parquet oil even be used on laminate? Can you seal your dishes with olive oil? If yes, then you can use oil on plastic laminate. If not, then probably not.pystein schrieb:
Assuming laminate flooring (or parquet) has just been installed in a room. Good that you’re only asking hypothetically. Or is it for a friend?
In principle, "nordanney" has answered all questions comprehensively.
What remains open—according to my understanding—is the answer regarding joint sealing at the wall transition.
The concern that water or liquids might seep under laminate or parquet flooring for any reason is practically of little relevance.
A bucket of water tipping over should be prevented as part of general precautionary measures; if it does happen, it is a matter for the contents insurance (provided it has been taken out).
I have often heard this concern from homeowners, and the measures taken out of precautionary risk prevention have ultimately proven to be the cause of damage even without liquid intrusion.
Why is that?
Well, I once tried to remove a baseboard fixed with silicone both on the wall and floor areas.
The required forces were considerable because the "adhesive" held the layers together incredibly firmly!
In practice, a flooring installed loosely as a "floating" floor made of laminate, wood, and wood-based materials must be able to accommodate length changes caused by both temperature and humidity.
The same applies to firmly glued floors, although laminate floors are generally installed only as floating floors (according to all manufacturers’ specifications).
Therefore, anyone wanting to protect their laminate floor out of pure fear should act proactively rather than interfere with building physics mechanisms unknown to them.
In short: Joint sealing at the wall connection using acrylic sealant (never silicone, as it tends to attract dirt quickly) should only be done if the sealant below the baseboard is horizontally cut again after curing with a sharp utility knife. This does not compromise the "seal," but allows the flooring to expand or contract without stress.
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Best regards to all: KlaRa
What remains open—according to my understanding—is the answer regarding joint sealing at the wall transition.
The concern that water or liquids might seep under laminate or parquet flooring for any reason is practically of little relevance.
A bucket of water tipping over should be prevented as part of general precautionary measures; if it does happen, it is a matter for the contents insurance (provided it has been taken out).
I have often heard this concern from homeowners, and the measures taken out of precautionary risk prevention have ultimately proven to be the cause of damage even without liquid intrusion.
Why is that?
Well, I once tried to remove a baseboard fixed with silicone both on the wall and floor areas.
The required forces were considerable because the "adhesive" held the layers together incredibly firmly!
In practice, a flooring installed loosely as a "floating" floor made of laminate, wood, and wood-based materials must be able to accommodate length changes caused by both temperature and humidity.
The same applies to firmly glued floors, although laminate floors are generally installed only as floating floors (according to all manufacturers’ specifications).
Therefore, anyone wanting to protect their laminate floor out of pure fear should act proactively rather than interfere with building physics mechanisms unknown to them.
In short: Joint sealing at the wall connection using acrylic sealant (never silicone, as it tends to attract dirt quickly) should only be done if the sealant below the baseboard is horizontally cut again after curing with a sharp utility knife. This does not compromise the "seal," but allows the flooring to expand or contract without stress.
---------------------------
Best regards to all: KlaRa
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