Oxfordshire · England
Highmoor Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right in Highmoor, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps opening along the back of the worktop
- A second bead peeling off the first
- Sealant that came away because the surface wasn’t prepared
Remedial sealant for homes and businesses in Highmoor
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint will not last, however tidy it looks. We take it out and use a sealant made for that joint. We are often asked to deal with repeat leaks from the same joint and torn expansion joints, on leaking tray & enclosure joints, expansion joints and botched or over-sealed joints.
In a village or hamlet like Highmoor, homes are often older cottages and farmhouses alongside a few newer houses. Movement in older walls and floors tends to show first as cracked grout or split sealant.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Highmoor (RG9)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens if it’s left?
It’s easy to scratch acrylic, enamel or an uPVC frame cutting out old sealant, and any film left behind stops new sealant sticking. Careful removal is most of a remedial job. Around Highmoor, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
What you get with us
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
- We never seal over old sealant
- We agree the colour with you first
See our cost guide or customer reviews.
Highmoor questions
I let a flat near Henley-On-Thames station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Is Highmoor within the area you cover?
Yes, Highmoor is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
How long before the joint can be used?
It depends on the product. Before we leave, we’ll tell you the cure time.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
What happens on the day
When we arrive, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before we start. Most jobs take a few hours for a typical bath or shower, longer where several layers have been applied. Somewhere as small as Highmoor, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The right product goes in, with backing where the joint moves.
- The joint is tooled and you are told about anything else we found.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- Mention if the joints have been sealed before
How to get a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear price before we start.
Read more
Remedial sealant in Highmoor: local notes
Most of the South East has hard water, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. There are hotels and other places to stay in and around Highmoor. Hotel bathrooms are part of our work as well as homes, and can be done room by room.
Schools such as Stoke Row Church of England School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s. In the older streets around Church of St Paul, walls and floors in older homes can move, and sealant and grout show it first. Rented homes near Henley-On-Thames station change hands often, and a joint that keeps failing is best fixed properly while the property is empty.
Highmoor is about 4 miles north-west of Henley-on-Thames, in Oxfordshire. Every kind of property in Highmoor is covered for remedial sealant, old or new, large or small. The work is guaranteed for a year. Highmoor is one of 443 towns and villages in Oxfordshire where we work. Our Reading page covers work nearby (7 miles or so).
Every address in RG9 is covered for remedial sealant. Streets in the area include The Glebe and Holly Close, all of which we cover. Other places close to Highmoor include Highmoor Cross (1 mile south-east), Shepherd's Green (1 mile south-east), Catslip (1 mile north-east), Nettlebed (2 miles north) and Kingwood Common (2 miles south). We also work in nearby towns such as Didcot (11 miles west), Abingdon-on-Thames (15 miles north-west), Thame (13 miles north), Henley-on-Thames (4 miles south-east), Benson (6 miles north-west) and Chinnor (11 miles north).
Near you in Highmoor
Typical jobs here are in homes near The Dog and Duck pub. Highmoor’s nearest station is Henley-On-Thames station, roughly 4.5 miles east. The countryside around Highmoor includes Warburg Nature Reserve.
DIY versus a professional finish
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, then guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Different surfaces, different methods
Movement & expansion joints
Movement joints in floors, walls and façades need a flexible sealant set to the right depth. Failed sealant is cut out, backing rod or tape is fitted and the joint resealed.
Worktops & kitchens
Shrunken worktop sealant leaves a gap that lets water into the back edge. It’s cut out, degreased and resealed in a colour to suit.
What affects the quote in Highmoor
We don’t publish a price list, because jobs vary so much. What we look at:
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Any working-time requirements on site
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, call 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Helping us quote
To make quoting easier, please include:
- Roughly how big the job is
- Any previous sealing or DIY work
- The type of property
- Photos by email, if that is easy
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
Also near Highmoor
Also in Highmoor
Honest limits
New sealant can’t fix everything, and we’d rather say so up front. It will not solve:
- Failed tanking or loose tiles behind the sealant
- A leaking trap, valve or supply pipe
- Sealant in an older building that needs testing for asbestos first
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
What we seal
- Expansion joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Failed movement joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
Landlord and commercial work in Highmoor
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.