Buckinghamshire · England
Remedial Sealant in Gerrards Cross
Problem with your failed sealant joints in Gerrards Cross? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Kitchen joints letting water behind the worktop
- Sealant that came away because the surface wasn’t prepared
- Black mould underneath the bead
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Find out why the sealant failed first
- Have loose fittings fixed before resealing
- Always have old sealant cut out, not covered
- Keep movement joints clear of mortar and paint
If the joint ever needs renewing, have it cut out, not sealed over. New silicone does not bond to old, so the old bead should always come out first.
Movement joints that have split let water into the structure, and the longer it’s left, the more the joint edges break down. Resealing while the edges are sound is simpler.
Remedial sealant in Gerrards Cross
The wrong product in the wrong joint won’t last, however tidy it looks. Out it comes, and in goes a sealant suited to the job. Typical jobs include gaps opening along the back of the worktop and mould trapped under a layer of silicone, across shrunken worktop sealant, failed movement joints and expansion joints.
Even in a smaller place like Gerrards Cross, bathrooms and kitchens see heavy daily use. Older or newer, every room gets the same approach: all the old material out, the joint cleaned and dried, then new sealant or grout.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Place
- Gerrards Cross (SL9)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a typical bath or shower, longer where several layers have been applied. For a job in Gerrards Cross, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you are told about anything else we found.
How to prepare
- Tell us about any water getting in
- Move anything stored near the joints
- Mention any parking rules near the property
How to get a quote
For remedial sealant in Gerrards Cross, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Advice
Remedial sealant in Gerrards Cross: local notes
Gerrards Cross has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room. Most of the South East has hard water, so limescale builds up on sealant, grout and fittings.
Letting a property close to Gerrards Cross station? Then a joint that keeps failing is best fixed properly while the property is empty. For an older house near a landmark such as St James Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Gerrards Cross is about 5 miles north-east of Slough, in Buckinghamshire. Homes, rented property, offices and hotels in Gerrards Cross can book us for remedial sealant. Every job comes with our one-year guarantee. Our area takes in 263 places across Buckinghamshire. You can also see our page for Reading, roughly 20 miles from Gerrards Cross.
Jobs for remedial sealant in SL9 is quoted and booked the same way as anywhere else. Whether your property is on Station Road, East Common and Oxford Road or anywhere close by, we can help. Gerrards Cross is on the A40 and A413, which makes it straightforward to reach with everything needed for remedial sealant. Other places close to Gerrards Cross include Tatling End (1 mile south-east), Fulmer (1 mile south), Hedgerley Green (2 miles west), Higher Denham (2 miles east) and Baker's Wood (2 miles east). We also work in nearby towns such as High Wycombe (9 miles west), Chesham (9 miles north), Marlow (9 miles west), Amersham (7 miles north), Beaconsfield (4 miles north-west) and Princes Risborough (15 miles north-west).
Near you in Gerrards Cross
We work in homes and buildings around St Mary's School, The Chalfonts Community College and Bulstrode Park, among other places. Gerrards Cross has its own railway station: Gerrards Cross station. Other landmarks nearby include Chiltern Open Air Museum (3.8 miles north) and Chalfonts and Gerrards Cross Hospital (1.7 miles north). Not far away are Horse Shoe Bay and Church Wood.
Towns and villages near Gerrards Cross
What else we do in Gerrards Cross
When something else is needed
Before you book, it’s worth knowing the limits too:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A tray or worktop that needs refixing first
- Sealant in an older building that needs testing for asbestos first
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before you book.
Surfaces we seal
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Botched or over-sealed joints
- Failed movement joints
- Expansion joints
Why deal with it now?
Spraying mould remover on a sealed-over joint does not reach what’s underneath. The layers have to come out, so the joint can be treated and resealed. Homes in smaller places like Gerrards Cross can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why us?
- A sealant colour to suit the surroundings
- We never seal over old sealant
- White, clear, grey or coloured to suit, where the product allows
- Trusted Arbo and Everbuild sealants
Take a look at our cost guide or customer reviews.
What the job involves on each surface
Leaking trays & enclosures
Repeat shower leaks often come from a tray that flexes or an enclosure sealed in the wrong place. Both are checked before any new sealant goes on.
Windows & doors
Frames resealed over the top end up with hard, layered mastic. We remove it all and clean back to sound surfaces before backing and resealing.
Gerrards Cross: your questions answered
Do you cover smaller places like Gerrards Cross?
Yes. Gerrards Cross is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you take on hotel work around Gerrards Cross?
Yes, hospitality work, including hotels, is part of what we do. Work can be planned room by room, and out-of-hours working can be arranged.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Will there be a smell?
Possibly a little. It fades as the sealant cures.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
Can you reseal a split movement joint?
Yes. If a joint has been filled with mortar or rigid filler, we rake it out where possible, then the joint is sealed properly.
Can you match the sealant colour?
In most cases you can choose. We’ll explain which colours are available and agree one before work begins.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
When to call us in Gerrards Cross
Using the wrong product is a common cause: acrylic caulk in a wet area, a general-purpose sealant on a moving joint, or an acetoxy silicone on natural stone or some metals. Each fails in its own way.
People normally contact us after spotting something like this:
- Over-sealed joints coming away
- Wide, uneven beads that look worse than the old ones
- A shower that leaks however often it’s resealed
- Products that weren’t meant for the joint
For site and facilities teams at buildings such as The Gerrards Cross CofE School, we reseal washrooms and kitchens in schools and businesses as well as homes.
Questions to ask before booking
- How much experience the applicator has
- When the joint can take water or movement
- What insurance they hold
- How long the guarantee is