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How to Reseal Around a Shower Tray

  • Writer: Ivy Redmond
    Ivy Redmond
  • Sep 23
  • 12 min read

Re-sealing your shower tray is a pretty important job, honestly. It stops water getting where it shouldn't, which means less mould and your bathroom lasting longer. If you get it right, you can save yourself some bother down the line, whether you're doing a full bathroom makeover or just keeping things ticking over. This guide is going to walk you through how to reseal your shower tray, step by step, so hopefully, you'll feel a bit more confident doing it yourself.

Key Takeaways

  • Make sure you've got all your bits and bobs ready before you start, like the right sealant, a sealant remover, masking tape, and a caulking gun. Don't forget gloves and maybe a mask if the room isn't very airy.

  • Getting rid of the old sealant is key. Use a sealant remover and then a scraper or knife, but be careful not to nick the shower tray or the tiles.

  • Clean the edges really well with something like rubbing alcohol and make sure it's bone dry before you even think about applying new sealant. Check if the tray itself is wobbly – if it is, sort that out first.

  • Use masking tape to create neat lines for your sealant. This makes a big difference to the final look.

  • Apply the new sealant in a steady, even line, then smooth it off. Remove the tape while it's still wet for the cleanest finish. Leave it to dry properly, usually for at least 24 hours, before using the shower.

Gathering Your Essential Tools and Materials

Right then, before we get stuck into resealing that shower tray, let's make sure we've got everything we need. It might seem like a faff, but having all your bits and bobs ready to go makes the whole job much smoother. Trust me on this one.

Selecting the Right Silicone Sealant

This is pretty important. You'll want a good quality, mould-resistant silicone sealant specifically designed for bathrooms. These are made to handle the damp and humidity without going all black and yucky. Look for one that's easy to apply, as some can be a bit of a struggle if you're not used to them. A decent bathroom sealant is key to a long-lasting finish and preventing leaks. You can find some good options that come with their own applicator, which can be handy if you don't have a caulk gun.

Essential Tools for a Professional Finish

To get that neat, tidy look, you'll need a few bits:

  • Utility knife or sealant removal tool: For cutting away the old sealant.

  • Caulking gun: If your sealant tube doesn't have a built-in applicator.

  • Masking tape: This is a lifesaver for getting straight lines.

  • Smoothing tool or even a wet finger: For getting a nice, even finish on the new sealant.

  • Cleaning cloths or kitchen roll: For wiping up any excess.

  • Rubbing alcohol or a good cleaner: To make sure the surfaces are spotless before you start.

Safety First: Protective Gear and Ventilation

Don't forget to look after yourself while you're doing this. It's not the most dangerous job in the world, but it's always best to be prepared.

Make sure the bathroom is well-ventilated by opening a window or turning on the extractor fan. This is especially important when using sealant removers, as they can have strong fumes. Also, pop on some gloves to protect your hands from both the chemicals and any sharp tools you might be using.

Having these items sorted means you're halfway there before you even start removing the old stuff. It really does make a difference to have everything to hand. You can find a good range of bathroom sealants online if you want to get organised early. Get your bathroom sealant before you begin.

Removing the Old, Worn Sealant

Right then, before we get to the satisfying part of applying fresh, clean sealant, we've got to deal with the old gunk. This is probably the least glamorous part of the job, but it's super important. If you don't get all the old stuff off, the new sealant won't stick properly, and you'll end up with leaks and mould before you know it. So, let's get this done.

Clearing the Workspace Around Your Shower Tray

First things first, you need to make sure you have plenty of room to work. Take out any bottles of shampoo, soap dishes, or even the shower curtain if it gets in the way. You want to be able to get right up to the edges of the shower tray without bumping into anything. It might seem like a small thing, but having a clear space makes the whole process much easier and safer.

Using Sealant Remover for Stubborn Residue

Sometimes, the old sealant is really stuck on there, and just scraping won't cut it. This is where a sealant remover comes in handy. You can get these from most hardware shops. Just follow the instructions on the bottle – usually, you apply it along the old sealant line and leave it for a bit. It softens the sealant, making it much easier to peel away. Be careful not to use anything too harsh, though, as it could damage your shower tray or tiles.

Carefully Scraping Away Old Sealant

Now for the actual removal. You'll want a good, sharp utility knife or a dedicated sealant scraper. Go slowly and steadily along the line where the old sealant meets the tray and the wall. Try to cut just under the sealant, lifting it away. It's really easy to slip and scratch your shower tray or tiles here, so take your time. You want to get every last bit off, as any remaining residue will stop the new sealant from sticking properly.

Here’s a quick rundown of what you’ll need for this bit:

  • A sharp utility knife or a sealant scraper

  • Sealant remover (if needed)

  • Plenty of old cloths or paper towels

  • A small bin or bag for the old sealant

Don't rush this step. Patience is key to getting a really clean surface, which is what you need for the new sealant to do its job properly. Think of it like prepping a canvas before you paint – the better the prep, the better the final result.

Once you've scraped away the bulk of it, give the area a good wipe down with a damp cloth to pick up any dust or bits. Make sure it's completely dry before you move on to the next stage.

Preparing the Shower Tray Edges

Right then, with the old gunk all gone, it's time to get the area ready for the new sealant. This bit is super important, honestly. If you don't prep it properly, that new sealant won't stick like it should, and you'll be back to square one before you know it.

Thoroughly Cleaning the Area

First things first, grab yourself some rubbing alcohol or a good bathroom cleaner. You want to give the edges of the shower tray and the wall a really good wipe down. Get rid of any soap scum, grime, or even oily residue that might be lurking. Any little bit of dirt left behind can stop the new sealant from making a proper bond. It’s worth spending a bit of time on this to make sure it’s spotless.

Ensuring Surfaces Are Completely Dry

Now, this is a big one. After you've cleaned everything, you need to make sure it's bone dry. Seriously, don't rush this. Our bathroom fitters reckon leaving it to air dry for a few hours is the best bet. Any dampness hiding in there can really mess with how well the new sealant sticks, and nobody wants that. A dry surface means a stronger, longer-lasting seal.

Checking the Shower Tray for Stability

While you're there, give the shower tray a good wiggle. Press down on it, especially around the edges and corners. If it feels loose or moves about, that's not good news. It means the tray isn't properly supported, and that movement can eventually crack your new sealant. If you find any wobble, you'll need to sort that out first, maybe by adjusting the supports underneath or adding some extra fixings. Making sure the tray is solid is key to a good seal, much like making sure your pipes are joined correctly when you're installing a concealed shower system.

A solid, clean, and completely dry surface is the foundation for a watertight seal. Don't cut corners on this prep work; it really does make all the difference in the long run.

Applying Masking Tape for Precision

Right then, let's talk about getting those lines nice and straight. This is where masking tape really comes into its own. It’s not just about making it look tidy, though that’s a big part of it; it’s about creating a neat channel for your new sealant to sit in. This stops it from going where you don't want it and makes the whole job look much more professional.

Creating Straight Guidelines

To get those perfect straight lines, you'll want to use good quality masking tape, the kind that’s designed for painting. Start by sticking one piece of tape along the edge of your shower tray. Make sure it’s pressed down firmly so there are no little gaps for sealant to sneak under. Then, you’ll want to stick another piece of tape along the wall or the adjoining surface, directly above the first piece. The gap between these two pieces of tape is where your new sealant will go. Aim for a consistent gap, usually around 3-5mm, which is about the width of a couple of fingers. This gives the sealant enough room to fill the space properly and create a good seal. It’s a bit like drawing a line for yourself to follow, making sure you don’t go off-piste.

Ensuring the Correct Gap for Sealant

Getting the gap right between your masking tape is pretty important. Too narrow, and you won't have enough room to apply a decent bead of sealant, which might lead to a weak seal. Too wide, and you’ll end up with a chunky line of silicone that looks a bit messy and might not cure properly. A gap of about 3-5mm is generally a good bet for most shower tray resealing jobs. This allows the sealant to fill the void completely, creating a watertight barrier. It’s also worth remembering that the tape itself acts as a guide, so make sure the tape is straight and level before you start applying the sealant. If you’re unsure about the exact gap, check the sealant manufacturer’s recommendations, but a consistent 5mm gap is a good starting point for a clean finish. You can find more tips on waterproofing your bathroom at Bathroom Supplies Online.

Remember, patience here pays off. Take your time to get the tape positioned just right. It might seem like a faff, but it makes a world of difference to the final look and the effectiveness of your seal.

Applying the New Shower Tray Sealant

Right then, the prep work is done, and it's time for the main event: getting that new sealant on. This is where you really make the difference between a job that looks okay and one that looks professionally done. Don't rush this bit; patience is your best friend here.

Preparing Your Caulking Gun

First things first, you need to get your caulking gun ready. Grab your tube of silicone sealant and snip the very tip off at a 45-degree angle. You want to make a small opening, about 3-5mm wide, depending on the gap you're filling. If you cut it too big, you'll end up with way too much sealant, and it'll be a mess to clean up. Pop the tube into the caulking gun, give it a little push to make sure it's seated properly, and release the trigger mechanism. You're all set to go.

Applying a Consistent Bead of Sealant

Now, place the nozzle of the caulking gun right at the start of your masked-off edge. Gently squeeze the trigger and start moving the gun along the line at a steady pace. The goal is to lay down a continuous, even line of sealant. Try to keep the pressure on the trigger consistent so the bead of sealant is the same thickness all the way along. It's a bit like drawing a line with a pen, but with goo! You want to fill that gap between the masking tape nicely, without leaving any air pockets or gaps. If you're using a good quality sealant, it should flow out pretty smoothly. Remember, this is what's going to stop water getting where it shouldn't, so take your time and aim for a neat, unbroken line. A good tip is to practice on a bit of cardboard first if you're feeling nervous.

Achieving a Smooth, Even Finish

Once you've got your bead of sealant down, you've got a small window to make it look perfect. You need to smooth it out before it starts to skin over. You can use a dedicated sealant smoothing tool, or even just a damp finger (wear a glove for this, trust me!). If you're using your finger, dip it in a bit of soapy water first; it helps the sealant glide. Run your finger or tool along the bead of sealant, applying gentle, even pressure. This pushes the sealant into the gap and creates a nice, clean finish. Wipe off any excess sealant onto a damp cloth as you go. The masking tape you put down earlier is a lifesaver here, as it gives you a clean edge to work to. You want a slight concave curve to the sealant, not a big bulge. This shape helps water run off properly. It's worth checking out guides on waterproofing bathrooms if you want to see how different finishes are achieved.

Don't be tempted to overwork the sealant. A couple of smooth passes are usually all that's needed. Too much fiddling can actually make it look worse and can weaken the seal.

Finishing Touches and Curing

Right then, the new sealant is all applied and looking pretty smart, I bet. But we're not quite done yet. There are a couple of important steps to make sure this job lasts and looks as good as it can.

Removing Masking Tape Carefully

This is the moment of truth! While the sealant is still wet, you need to gently peel away the masking tape. If you leave it too long, the silicone can cure to the tape, and when you pull it off, you might end up with a messy edge or even pull some of the sealant away with it. So, take your time, pull the tape slowly at an angle, and try to keep it in one piece if you can. It’s quite satisfying when you see those clean, sharp lines appear.

Allowing the Sealant to Fully Cure

Now, this is probably the most important bit, and it requires a bit of patience. You absolutely must let the new sealant cure properly before you use the shower. The exact time will depend on the type of sealant you used, but it's usually between 24 and 48 hours. Some might even suggest longer. Resist the temptation to turn on the shower early! If you get it wet before it's fully cured, you risk ruining the seal you've worked so hard to create. It's best to check the manufacturer's instructions on the tube for the specific curing time. For a shower tray, it's often recommended to wait a full 48 hours, or even up to 72 hours, to be absolutely sure it's ready for use. This waiting period is key to getting a strong, waterproof bond. You can find more details on curing times for different bathroom surfaces if you need them.

Final Inspection and Clean-Up

Once the curing time is up, give your new sealant a good look-over. Check all along the edges for any gaps, bubbles, or areas that don't look quite right. If you spot any small imperfections, you can sometimes get away with a tiny touch-up with a bit more sealant, but try to do this before it's fully hardened. After you're happy with the seal, it's time to clean up your tools. Wipe down your caulking gun and any smoothing tools with a suitable cleaner, and dispose of any leftover sealant or empty tubes responsibly. A clean workspace is always a good sign of a job well done.

Once your new bathroom is all set up, it needs a little time to settle in. This final stage is important for making sure everything stays strong and looks great for years to come. Want to see how we can transform your bathroom? Visit our website to get a free quote today!

All Done! Enjoy Your Refreshed Shower

So there you have it! Resealing your shower tray might seem like a bit of a faff at first, but as you've seen, it's totally doable. Taking the time to do it properly means you're not just making your bathroom look tidier, but you're also stopping nasty water leaks and mould from causing bigger problems down the line. Give yourself a pat on the back – you've protected your bathroom and saved yourself a bit of cash. Now, just let that sealant do its thing and cure properly, and you'll have a shower that looks and feels much better. Happy showering!

Frequently Asked Questions

How often should I reseal around my shower tray?

It's a good idea to reseal your shower tray about every year or two. This really depends on how much you use your shower and what cleaning stuff you use. Keep an eye out for any peeling or mould on the old sealant, as these are signs it's time for a refresh to stop water getting in.

What are the signs that my shower tray needs new sealant?

Look for sealant that's changing colour, has mould growing on it, or looks cracked and has holes. If the sealant feels loose or is peeling away from the edges, it's definitely time to reseal it to prevent any water damage to your bathroom.

Can I do this myself, or should I call a professional?

Resealing a shower tray is something you can totally do yourself if you follow the steps carefully and have the right tools. If you're not confident or it's a big job, getting a professional to do it will make sure it's done perfectly and lasts a long time.

What's the best type of sealant for a shower tray?

You should use a silicone sealant that's made for bathrooms. These are usually waterproof and have special stuff in them to stop mould and mildew from growing, which is exactly what you need in a wet area like a shower.

How do I get rid of the old sealant properly?

First, use a special sealant remover and let it soak in for a bit, just like the bottle says. Then, carefully use a scraper or a craft knife to peel and scrape away all the old gunk. Be gentle so you don't scratch the shower tray itself.

What's the best way to prepare the shower tray before applying new sealant?

Make sure the area is super clean! Use something like rubbing alcohol to wipe down the edges where the new sealant will go. This gets rid of any grease or soap bits. Then, you need to make sure it's completely dry before you start. Putting masking tape along the edges will help you get nice, straight lines.

 
 
 

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