You have just finished showering and again your half bath is under water? In this case you should seal your shower cubicle to solve this problem. No matter whether you have just moved in and the shower door is not completely sealed or a seal of your previous cabin is broken, you can easily do this yourself.

Thanks to the DIY possibilities offered today, a leaking shower cubicle is no longer a case for sanitary operation. Various methods are available to seal even leaking shower doors or glass walls and prevent flooding in the bathroom. In addition, these methods are inexpensive alternatives that can be implemented with little knowledge. All you need is detailed DIY instructions explaining the necessary materials, utensils and steps to seal your shower enclosure effectively and within a short time. You can find them here.

Sealing the shower enclosure
If you have finally decided to seal your shower cubicle on your own, you have two methods at your disposal. These are each carried out in a different way with different tools and utensils and are better or less cost-effective for you, depending on the cost, time and work involved. For each method you will find suitable DIY instructions with tips on how to make your shower enclosure waterproof. Remember, however, that either method is much harder to use, but is better for showers with an unfavorable basic cut.

Sealing strips: DIY instructions
One of the easiest ways to seal your shower enclosure is to use ready-made sealing strips that can be installed in a few simple steps. These are only suitable for sealing the shower door or glass walls if they have a gap that is not already closed. The big advantage of these is their ease of use.

Since these are prefabricated parts, effort and costs are low. The only disadvantage is the incomplete protection against leaking water. In the case of particularly high quantities of water, this penetrates under the seal, especially if there is a lot of pressure on it. The reason for this is the lack of silicone, which would completely seal the gap. For this method you need the following materials and utensils.

Sealing strips or shower gaskets (term varies depending on manufacturer)
Glass or bathroom cleaner
cutter knife
You do not need more for this method. The shower seals are particularly suitable for shower cubicles that are already equipped with such seals. Especially movable components such as the shower door are equipped with this and must therefore be changed more frequently. Permanent use causes heavy wear of the seals. You have the choice between the following seals.

Straight seals
Splash protection strips: these lie on the floor
Round shower gaskets
Seals with magnetic profiles: these close off the shower
Basically you will probably use one of the straight gaskets and anti-surge bars. With straight seals you have a large number of profiles available, depending on the manufacturer. Before purchasing individual gaskets, it is therefore essential that you measure the following values.

Glass thickness in mm
Distance to floor or other shower parts in mm

These are the main sizes you will need to order and will help you make the right choice. The length is not always important as you can cut the gasket to size. It should not be too short. With round gaskets, on the other hand, you should always measure the required length, as these are considerably more expensive.

The average cost per gasket is 12 to 35 euros for 100 centimetres of gasket, depending on the manufacturer and type. Some manufacturers adapt some of their gaskets to doors or shower walls. You should also consider this when making your choice. Once you have obtained the necessary gaskets, you can seal your shower enclosure. Follow these DIY instructions.

Step 1: Start by removing the old gaskets from your shower cubicle if there are any left. Normally, all you have to do is remove them. If they are stuck, use a blunt tool and loosen the shower seal. You can simply dispose of it in your household waste, as it is mainly silicone and plastic.

Step 2: Now clean the edges of the glass doors and shower walls thoroughly with a cleaning agent. Dry them so that no moisture can collect under the shower enclosure seal. Absorbent cloths that absorb a lot of moisture and thus prevent the risk of water accumulating are well suited for this purpose.

Step 3: Unpack the finished shower seals and check them for cracks or other defects. If the gasket is damaged, do not use it again, as it will probably no longer function properly. This is particularly important if, for example, you have a sensitive floor in the rest of the bathroom or water could get into the hallway or other rooms that are not resistant to moisture.

Step 4: Fasten them according to the manufacturer’s instructions, if one is included. In most cases, all you need to do is attach the gasket to the window or door in the correct orientation. This is done by placing the gasket on the glass and then tightening it. Some shower gaskets have a piece of plastic that is bent inwards. This is often found on anti-surge strips and is intended to direct the water inwards and away from the pane at a pleasant angle. This must always point inwards.

Step 5: After installing the shower gasket, check the seat. It must not be loose, otherwise it will not work. As soon as the seat is in place, take the cutter knife and shorten the excess material to the required length.

Step 6: Finally, clean the floor and glass of the shower again. Dirt may adhere to the glass during installation. In addition, you certainly don’t want to leave any dirty fingerprints on the glass. You should also remove any plastic or silicone residues that have come off the shower seal during installation. This is often necessary after cutting.

Now you have installed the shower seal and can take a relaxed shower without having to be surprised by a huge puddle after showering. Always follow the manufacturer’s instructions when installing, as not all products are the same.

Tip: You don’t have to worry about the size of the sealing strips and cuffs as they are made to typical shower cubicle sizes found in most German bathrooms. However, if special shower dimensions have been used in the construction of your home, it is possible that the parts will not fit.

Sanitary silicone: DIY instructions
You can also seal your shower cubicle if you use sanitary silicone. This has been used for years for exactly this purpose, as it prevents the formation of mould and provides good protection against leaking water. Sanitary silicone can be used to seal several components of the shower enclosure at the same time.

Floor connections
wall connections
Silicone is not very suitable for doors as it cannot be applied to the edges. It is used as a strong compound that effectively holds back water and remains stable for a long time after proper application. So if you have a loose seal that is not on the moving parts of the shower enclosure or to close a large gap, for example between the shower wall and the floor, you should seal it with sanitary silicone.

For this method you need the following materials and utensils:

Sanitary silicone
cartridge gun
joint smoother
dishwashing liquid
adhesive tape

With sanitary silicone you are really spoilt for choice, as it is offered by a large number of manufacturers. On average, you pay between five and ten euros for a cartridge that can easily be used for sealing. The cartridge gun itself costs between eight and 30 euros, depending on the quality. You can buy a joint smoother for about ten euros. As soon as you have all the necessary materials and utensils ready, you can start sealing your shower cubicle.

Step 1: If you still have old silicone in the area to be compacted, remove it with a joint scraper. Then clean the area thoroughly so that there is no excess silicone left in the area. Dry thoroughly to prevent moisture under the groin.

Step 2: Insert the silicone cartridge into the press and fix it in place. Depending on the model, this can be done in different ways.

Step 3: Guide the tip of the cartridge gun along the edge you want to seal. Guide the gun over the edge in one go and try not to slip, otherwise you will have to remove the silicone and reapply it.

Step 4: Prepare a bowl with water and a few drops of detergent. Dip the trowel into the lye and smooth the silicone with sufficient force. This must also be done in one go, otherwise the joint will not be smooth. Always wear gloves during this step.

Step 5: Now let the silicone dry. Then you can use the shower cubicle.


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