Check local branch stock
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Bostik EVO-STIK Sticks Like Waterproof Sealant C20 Clear (30615679)
The Evo-Stik 'Sticks Like' is an ultra flexible, paintable and mould resistant sealant SMP Polymer type all-weather sealant. Once applied, it cures by absorbing moisture in the air to a flexible rubber that is similar to a silicone. Due to its waterproof... -
Bostik EVO-STIK Sticks Like Waterproof Sealant C20 White (30613624)
The Evo-Stik 'Sticks Like' is an ultra flexible, paintable and mould resistant sealant SMP Polymer type all-weather sealant. Once applied, it cures by absorbing moisture in the air to a flexible rubber that is similar to a silicone. Due to its waterproof... -
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Bostik Pro Sealant A80 Acrylic Decorators Caulk White 310ml
The Bostik A80 is a professional grade White Acrylic Decorators Caulk, that is ideal for filling gaps and cracks prior to painting. The acrylic caulk provides a smooth finish and is instantly paintable, meaning no waiting around on projects. Suitable for... -
Bostik Pro Sealant FP403 Fire Resistant Hybrid Fireseal Polymer Sealant Grey 310ml
The FP403 is a fire resistant polymer sealant by Bostik. This one-component, fire resistant hybrid sealant is suitable for fire resistant sealing of linear joints for up to 4 hours and offers up to 25% movement capability. Fire rated to EN 1366-4, the... -
Bostik Pro Sealant FP403 Fire Resistant Hybrid Fireseal Polymer Sealant White 310ml
The FP403 is a fire resistant polymer sealant by Bostik. This one-component, fire resistant hybrid sealant is suitable for fire resistant sealing of linear joints for up to 4 hours and offers up to 25% movement capability. Fire rated to EN 1366-4, the... -
Bostik Pro Sealant P26 Weatherproof MS Polymer Black 290ml (30623176)
This black internal and external sealant by Bostik, is a professional grade black polymer sealant for weatherproofing exterior joints subject to high movement. It is also available in white, so you can match up perfectly with your home look and feel... -
Bostik Pro Sealant PU91 Polyurethane Sealant for High Movement Joints Black 300ml (30623103)
Bostik PU91 Black Silicone is engineered for professionals who demand performance in construction projects with high movement. This versatile polyurethane sealant stands out due to its high modulus and elastic properties, enabling it to endure the... -
Bostik Pro Sealant PU91 Polyurethane Sealant for High Movement Joints Brown 300ml (30623143)
Bostik PU91 Silicone in Brown colour is engineered for professionals who demand performance in construction projects with high movement. This versatile polyurethane sealant stands out due to its high modulus and elastic properties, enabling it to endure... -
Bostik Pro Sealant PU91 Polyurethane Sealant for High Movement Joints White 300ml (30623108)
Bostik PU91 Silicone is engineered for professionals who demand performance in construction projects with high movement. This versatile polyurethane sealant stands out due to its high modulus and elastic properties, enabling it to endure the stresses... -
Bostik Pro Sealant S21 Multi Purpose Silicone Black 310ml
A professional grade black S21 multi purpose Silicone Sealant. Features acetoxy silicone sealant for sealing glazing, frame and sanitary joints. This low modulus silicone sealant is suitable for interior and exterior use and offers up to 20% movement... -
Bostik Pro Sealant S21 Multi Purpose Silicone Clear 310ml
This Bostik S21 310ml multi purpose Silicone Sealant is a clear coloured professional grade, acetoxy silicone sealant for sealing glazing, frame and sanitary joints. This low modulus silicone sealant is suitable for interior and exterior use and offers... -
Bostik Pro Sealant S21 Multi-Purpose Silicone Grey 310ml (30623110)
Bostik S21 Silicone is a professional-grade acetoxy silicone sealant designed specifically for both glazing and sanitary joints. Its low modulus property ensures flexibility while maintaining durability, making it suitable for various applications across... -
Bostik Pro Sealant S21 Multi-Purpose Silicone White 310ml
Bostik S21 multi purpose Silicone Sealant is a professional grade, acetoxy silicone sealant for sealing glazing, frame and sanitary joints. This low modulus silicone sealant is suitable for interior and exterior use and offers up to 20% movement... -
Bostik Pro Sealant S30 Acetoxy Sanitary Silicone Clear 310ml
Professional grade acetoxy silicone sealant for sanitary joints. S30 is a professional grade acetoxy sanitary silicone sealant developed for sealing sanitary joints. Sanitary joints are continually exposed to moisture and humidity. This acetoxy silicone... -
Bostik Pro Sealant S30 Acetoxy Sanitary Silicone Grey 310ml
Professional grade acetoxy silicone sealant for sanitary joints. S30 is a professional grade acetoxy sanitary silicone sealant developed for sealing sanitary joints. Sanitary joints are continually exposed to moisture and humidity. This acetoxy silicone... -
Bostik Pro Sealant S30 Acetoxy Sanitary Silicone White 310ml
Professional grade acetoxy silicone sealant for sanitary joints. S30 is a professional grade acetoxy sanitary silicone sealant developed for sealing sanitary joints. Sanitary joints are continually exposed to moisture and humidity. This acetoxy silicone... -
Bostik Pro Sealant S31 Sanitary Silicone Clear 310ml
The Bostik S31 Neutral Cure Sanitary Silicone Sealant is a professional grade, neutral cure silicone sealant developed for sealing sanitary joints that are continually exposed to moisture and humidity. S31 is a great sealant that adheres well with... -
Bostik Pro Sealant S31 Sanitary Silicone Grey 310ml
The Bostik S31 Neutral Cure Sanitary Silicone Sealant is a professional grade, neutral cure silicone sealant developed for sealing sanitary joints that are continually exposed to moisture and humidity. S31 is a great sealant that adheres well with... -
Bostik Pro Sealant S31 Sanitary Silicone White 310ml
The Bostik S31 Neutral Cure Sanitary Silicone Sealant is a professional grade, neutral cure silicone sealant developed for sealing sanitary joints that are continually exposed to moisture and humidity. S31 is a great sealant that adheres well with... -
Bostik Pro Sealant S41 Window & Door Frame Silicone Anthracite 310ml
This S41 Neutral Cure Window & Door Frame Silicone Sealant by Bostik is a professional grade neutral cure silicone sealant, developed for sealing window and door frame joints. This silicone sealant is anthracite in colour, but it is also available in... -
Bostik Pro Sealant S41 Window & Door Frame Silicone Clear 310ml
S41 is a neutral cure window and door frame silicone sealant made by Bostik. This S41 sealant is a professional grade neutral cure silicone sealant, developed for sealing window and door frame joints. Suitable for interior and exterior applications,... -
CT1 Construction Sealant & Adhesive Black 290ml (535106)
CT1 is the only product in the market with TRIBRID Technology, making it 360% stronger than a traditional Hybrid Polymer. If you're looking for a clean, sealant, look no further than CT1 White. This pristine construction sealant creates highly durable... -
CT1 Construction Sealant & Adhesive Brown 290ml (535506)
CT1 is the only product in the market with TRIBRID Technology, making it 360% stronger than a traditional Hybrid Polymer. If you're looking for a clean, sealant, look no further than CT1 White. This pristine construction sealant creates highly durable...
Sealants
Sealants are used when you are looking to create a waterproof or airproof seal. Also knows as silicone sealants or mastics, they can be used for both internal or external applications, minimising any passing of water or air into an area.
Applied using a sealant gun, the sealant fills any gaps to leave a smooth finish and when dried can be sanded or painted over.
If you're not sure which type of sealant you require, ask our friendly team at your local branch.
Frequently Asked Questions
Can you paint over silicone sealant?
Silicone sealant is a durable and long-lasting variety that seals and waterproofs. Its drawback is that paint will not stick to it. However, it is possible to paint over silicone caulk.
Can you put sealant on top of sealant?
We do not recommend putting new sealant on top of old sealant as it poses a risk of leakages.
What removes silicone sealant?
Sealant remover, a soft cloth, a razor or utility knife, and a scouring pad would help to remove your silicone sealant efficiently.
How to apply silicone sealant.
To apply silicone sealant, start by evaluating the project. Think about what you need to do, what you’d like the finished job to look like and what kind of tools and sealant you need. Once you’ve picked the right tools and you’ve got everything you need, you can start preparing the area. This means that you need to ensure that the area is free of dirt and grime, removing any leftover old sealant, and making sure that the entire area is clear ready for when you get started. Then, you can start applying the sealant, although, depending on the type of sealant you use, there are lots of different ways to apply it. You may need a sealant gun, or the sealant that comes in a tube so you can apply it directly. Once you’ve applied the sealant, smooth it out by using either your finger or a sealant smoothing tool, then make sure to leave it to dry for the time specified by the instructions.