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As of: September 2026 · Guide with video
New sanitary silicone can be used again after around 24 hours, at which point you may shower again. Thick joints take longer. The surface feels dry after just a few minutes, but the silicone inside is still soft.
Here you will find out how to renew a silicone joint in your shower or bath yourself, what helps against mould, and when it is worth having the joints professionally redone.
Professionally reviewed by Denis Hadzic, bazuba ViennaAs of: 24 September 2026 · Experience from our businesses
In short
After around 24 hours, fresh silicone is load-bearing and you may shower again. For thick joints, it is better to wait two days.
Important: Mould in the silicone joint cannot be permanently cleaned or painted over. The joint must be removed. What helps against mould
Reference values for sanitary silicone, the information on your cartridge is decisive. Prices vary depending on bathroom and provider. As of: 24 September 2026. Professionally reviewed by Denis Hadzic (bazuba Vienna).
Sanitary silicone cures with moisture from the air, from the outside in. After 10 to 20 minutes, a skin forms and the surface is no longer sticky. Underneath, the silicone is still soft. It only fully cures gradually, as a rule of thumb about 1 to 2 millimetres per day.
| Level | Duration | What this means |
|---|---|---|
| Skin formation | 10 to 20 minutes | Surface no longer sticky, do not smooth from this point onwards |
| Shower againStandard joint up to approx. 3 mm | after around 24 hours | Water and steam no longer damage the joint |
| Thick or deep jointfrom approx. 5 mm | 2 days or longer | The deeper the joint, the longer the curing time |
| Cool, poorly ventilated bathroom | longer | Cold slows down curing, normal room air and warmth help |
Reference values for standard sanitary silicone. The exact time is stated on the cartridge or in the data sheet.
If water or a lot of steam comes into contact with the still-soft silicone, it can become deformed, be washed out, or detach from the edge. The joint then becomes leaky, water runs behind it, and this is often where mould starts to form later. If in doubt, it is better to wait a little longer.
Hardly. Ventilate normally and keep the bathroom warm, then the silicone will cure as quickly as possible. Fan heaters or hairdryers make little difference. If you cannot wait, it is best to plan the joint replacement so that you have a second bathroom available or leave it overnight.
For a bath or shower, you will need about an afternoon, plus drying time. The video shows all the steps.
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Mehr InformationenCut along both edges of the joint and pull out the silicone. Soften any residue with silicone remover and remove it with a plastic scraper. Take care with acrylic and enamel baths: do not scrape with the blade.
The joint edges must be free of grease, dust, and completely dry, otherwise the new silicone will not adhere. Wipe with methylated spirits and allow everything to dry thoroughly. Tip for bathtubs: Fill the tub with water before sealing. This causes it to settle as it does when bathing, so the joint is less likely to crack later. Only drain the water once the silicone has cured.
Cut the cartridge tip at an angle, slightly wider than the joint. Move the gun evenly along the joint in one go, better a little too much than too little.
Dip the joint smoother in the soapy water and pull it diagonally over the joint. Wipe off any excess immediately. Remove the masking tape before a skin forms. Afterwards, do not use the shower for around 24 hours, longer for thick joints.
In wet areas, sanitary silicone belongs in the joint, i.e. on the bath, shower, washbasin, and in the corners of tiles. Acrylic can be painted over, but is not permanently waterproof. It is suitable for dry areas, such as between wall and ceiling.
Black spots on the silicone joint are usually mould that grows into the soft material. Cleaners often only bleach the surface, and after a few weeks the stains reappear. Harsh agents such as chlorine bleach are also not a good idea in the bathroom. The only permanent solution is to completely remove the joint and reapply it.
To prevent mould from returning: air the room thoroughly after showering, dry the joints with a squeegee or cloth, and use silicone with mould protection. Find out more in the guide. Remove mould in the bathroom.
Have your sealant joints renewed, usually within one dayWe remove the old sealant joints including any mould and apply new ones. Fixed price after a free inspection.
| Renew yourself | With bazuba | |
|---|---|---|
| Costs | materials only | Wall joints usually €350 to €900, floor joints usually €250 to €600 |
| Time | an afternoon, plus 24 hours drying time | usually completed in one day |
| Mould | new joint, pay attention to the cause | Mould is removed and treated |
| Tile grout | Scraping out is laborious and dusty | We renew tile joints without scraping out |
Guide prices with some variation, depending on bathroom and provider.
Most people can manage a single joint on the bathtub themselves. It is worthwhile to have it done professionally if there are several joints in the bathroom, if mould keeps returning, or if the tile joints have become discoloured. More about grout renovation.
For standard joints, around 24 hours. The surface is touch-dry after 10 to 20 minutes, but the silicone inside is still soft. Thick or deep joints need two days or more.
After 10 to 20 minutes, a skin forms, then the silicone cures from the outside in, as a rule of thumb about 1 to 2 millimetres per day. The exact time is stated on the cartridge.
Cut open the old joint on both edges and pull it out, remove any residue with silicone remover, clean the edges with methylated spirits and allow to dry. Then inject new sanitary silicone in one go, smooth with washing-up liquid and a joint smoother, and allow to dry for around 24 hours.
There is no fixed interval. Renew the joint if it cracks, detaches from the edge, or shows dark mould spots. In a frequently used shower, this is often the case after a few years.
No. Paint does not adhere permanently to silicone and will flake off. Discoloured or mouldy silicone joints must be removed and replaced.
Only a new joint is a permanent solution, as mould grows into the silicone. Cleaners usually only help for a short time. To prevent recurrence: air the bathroom after showering, dry the joints, and use silicone with mould protection.
In wet areas, use sanitary silicone, as it remains permanently waterproof and elastic. Acrylic can be painted over and is suitable for dry areas, such as between wall and ceiling.
With us, wall joints usually cost between €350 and €900, and floor joints between €250 and €600, depending on the bathroom and the company. We will provide you with a fixed price after a free inspection. In most cases, we complete the work in a single day.
New silicone and tile joints, usually completed in one day, including mould removal.
What you can do yourself and when a professional company is required.
„On the recommendation of a friend, we got in touch with bazuba Rostock for our bathroom renovation. Since it’s a rental apartment, there were quite a few things to consider with the landlord/owner’s approval, but we were able to implement many individual wishes at our own expense. The initial contact was very pleasant, and first, an assessment was made, and of course, the initial ideas and wishes for the project were recorded. The basic task was to transform the over 20-year-old tiled bathroom with an old bathtub into a modern seamless bathroom with a walk-in rain shower. The company’s showroom had quite a few displays, where we could get our first personal impressions. Then we put together the rest from the catalogs, and we also relied on the advice and recommendations of the boss there, who contributed some great ideas. Then we received an offer with a 3D visualization of the finished bathroom. This allowed us to work very well together with the owner and bazuba on the details and arrive at a final result. The correspondence between bazuba and the owner also went very smoothly, and we were very well informed about delivery times, construction times, and the entire process up to the finished bathroom. We helped set up the construction site by covering the floor and cabinets, and the company’s employees were very friendly and informative about the work steps. We hardly had to ask anything because every morning we were informed about what would happen that day until quitting time. The announced construction time was even undercut by 2 days because everything really fit together, and the trades worked hand in hand. The handover and the finished result, including explanations of all the components, care instructions, and warranties, worked wonderfully and were presented to us very transparently. All in all, we are very satisfied with the result, and for the small space available, it almost feels like being in a good hotel when you step into the shower in the morning 😉 I can definitely recommend bazuba Rostock and am happy to show some before-and-after pictures. It’s not decorated or furnished yet, but it’s about the raw result."
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„Complete renovation of bathroom and WC — After weeks of searching online for a company that could take on our project (complete renovation of bathroom and WC), we came across bazuba. Although all customer reviews pointed to an outstanding company, we still felt the need to visit the company location in Guntramsdorf in person first. But from that moment on, it was clear to us that only this company was suitable for our project. The exceptionally warm, competent, polite, friendly, and patient team immediately convinced us. From then on, everything went very quickly. We arranged an inspection appointment with Mr. Weninger. The inspection, consultation, measuring, and addressing special requests all took place in a very friendly and relaxed atmosphere. The gentleman was very patient and really took a lot of time for us, only leaving once even the smallest detail was clarified. After the very detailed offer and placing the order, the renovation work began punctually on the agreed date. From here on, I have to keep it short, otherwise I would need two more pages. ALL involved, whether subcontractors or the truly outstanding bazuba specialists, carried out their tasks so competently, punctually, cleanly, almost dust-free, quickly, friendly, politely, courteously, professionally, precisely, and expertly that words almost fail me. The continuous support and (after)care of my project are also worth highlighting. After completing the very extensive work, I now have two real gems (bathroom and WC), and I find myself spending much more time there than really necessary. The conclusion of a highly satisfied and enthusiastic customer: the best 10-star company I have ever dealt with. I have recommended and will always recommend bazuba."
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„Everything just fits perfectly! :o) — We had our roughly 50-year-old bathroom and the equally old toilet renovated by bazuba, and also had the shower in the second bathroom modernized. From the very first (phone) contact, we had a good feeling. Bathroom planner Raffael came to our home and went through the various measures with us, advising us well and being very patient. We were also able to discuss the price well with him, and in the end, he made us an offer that we were very happy with. We had also obtained quotes from competitors, which were significantly more expensive — we’re talking +50% and more. The implementation then went perfectly. First came the dismantling team, then the electricians, the plasterers/floor layers, and finally the assembly team. Overall, the work took almost three weeks, but that was agreed upon in advance and was therefore fine. All workers always arrived as scheduled, were very friendly, explained a lot to us, and did a great job. We were also very grateful that they pointed out some possible/necessary improvements to us. Spontaneous change requests on our part were received and implemented kindly. At the same time, planner Raffael and project manager Anel were always reachable for us and responded quickly to our questions. The result speaks for itself: from old-fashioned, dark rooms with very worn installations, we now have friendly, modern wet rooms that you enjoy entering again. The planning concept was implemented 100% in reality and at what we believe is a really fair price. No hassle with the craftsmen, quite the opposite — it was a pleasure, and we can warmly recommend the entire bazuba team."
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„Everything just fits perfectly! :o) We had bazuba renovate our roughly 50-year-old bathroom and the equally old toilet, and also modernize the shower in the second bathroom. From the very first (phone) contact, we had a good feeling. Bathroom planner Raffael came to our home and went through the various steps with us, giving us good advice and showing a lot of patience. We were also able to talk openly about the price, and in the end he gave us an offer we were very happy with. We had also gotten quotes from competitors, which were noticeably more expensive—we’re talking +50% or more. The implementation then went perfectly. First came the demolition team, then the electricians, the plasterers/floor layers, and finally the installation team. Overall, the work took almost three weeks, but that was agreed on beforehand and so was fine. All the workers always arrived as scheduled, were very friendly, explained a lot to us, and did a great job. We were also very grateful that they pointed out some possible/necessary improvements. Our spontaneous change requests were welcomed and carried out. At the same time, planner Raffael and project manager Anel were always reachable and responded quickly to our questions. The result speaks for itself: from old-fashioned, dark rooms with very worn installations, we now have bright, modern wet rooms that you enjoy entering again. The planning concept was implemented 100% in reality and at what we think is a really fair price. No trouble with the craftsmen at all—in fact, it was a pleasure, and we can warmly recommend the entire bazuba team."
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„Due to water damage in 2023 and subsequent repair work by a specialist company, we were then looking for a company to get our bathroom back in shape. This turned out to be not so easy; local companies either declined due to lack of time or didn’t show up despite appointments. Through internet research, we came across bazuba in Karlsruhe. We quickly had a first appointment with Mr. Glutsch. He arrived on time at our place, listened to our ideas about remodeling the bathroom, and shared his professional knowledge and comments. He took measurements, made notes, and promised to prepare an offer, which arrived in the shortest time. Due to several work appointments with bazuba, he already told us in advance that the work would be delayed and we should expect a date in March/April. But that didn’t matter to us in the end, since thanks to the preliminary work of the renovation company, we could still use our 30-year-old bathroom. When choosing the ceramics and the walk-in shower, we were with Mr. Glutsch at C.Ufer in KA (top advice!). In April, the work started on our partially renovated bathroom. After about 2 weeks, we could fully use our new bathroom; for the shower enclosure, we had to make do with a temporary solution, which was replaced after 5 weeks by a glass partition from Kermi. All in all, we were very impressed by the support and advice from bazuba (special thanks to Mr. Glutsch). A big compliment to the two skilled workers responsible for the work!! Without a doubt, 5 stars for bazuba."
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„Good decision! — We chose BAZUBA because of a report on an online portal... and we have no regrets! Our wishes were discussed and planned in the showroom with an incredible amount of patience. Even changes and special requests before the renovation started were implemented quickly and easily. The entire construction team also deserves mention – everyone was without exception polite and friendly. I especially want to mention Mr. Robert, who brightened every one of our site visits with his good mood. In hindsight, we can now list the following reasons why we recommend BAZUBA to everyone: 1.) The price – All other quotes were about 25% higher than BAZUBA’s. 2.) The team – As already mentioned, patience and friendliness are top priorities here. 3.) The planning – None of our wishes were considered impossible. Even special requests were gladly fulfilled. 4.) The working time – A conventional renovation would have taken at least 4 weeks and the whole house would have been dusty. BAZUBA finished on schedule in 2 weeks. 5.) The quality – Nothing wobbles, nothing is scratched. The bathtub looks like new. The walls are flawless. Every joint fits perfectly. 6.) The look – We chose a seamless bathroom. Compared to tiles, our bathroom now feels much friendlier and warmer. 7.) The warranty! All in all, we are satisfied customers and would have our bathroom renovated by BAZUBA again anytime."
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„Perfect! Absolutely recommend. — Tub out and shower in! From start to finish, we can only give the highest praise. The consultant, Mr. Raffael Weninger, gave us excellent advice at home. He took our needs into account and came up with a perfect plan for us with his great ideas. The craftsmen also deserve the highest praise. They were extremely careful to avoid dust and dirt, which is not easy with this kind of work. The first two days, two careful installers took on their responsible tasks. After all, all newly laid water pipes and drains have to be completely sealed. The third and fourth days belonged to the quick gentlemen Jànos and Gàbor, who were able to complete this partial renovation on time — without taking a break! It must be said that all "our" four craftsmen are extremely friendly and hardworking. Otherwise, our project would not have been completed perfectly in this relatively short time. On the third day, the company owner visited us, checked on the progress, and asked about our satisfaction so far. That builds trust. Now we enjoy our new shower pleasure every day! We gladly recommend this company with its great employees. Warm regards! Christian & Sylvia Karner"
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We will inspect your bathroom free of charge and then provide you with a fixed price. Prefer to call? Germany 0800 90 44 2000, Austria 0800 66 55 36, both free of charge.
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