Hertfordshire · England
Remedial sealant & repairs in Farnham, Hertfordshire
Removing failed, mouldy or leaking sealant and putting it right for Farnham, backed by a 12-month guarantee. Ask us for a quote.
- Sealant applied over old sealant that has lifted
- Sealant peeling off a dusty or damp surface
- Smears and lumps from a botched reseal
Remedial sealant in Farnham
If a joint has been resealed and is leaking again, it’s worth a proper look. Send pictures when you ring 0345 464 0079 or send us an email, along with when it was last resealed. If you’re dealing with kitchen joints letting water behind the worktop and movement joints that have split or pulled away, we can put it right, on expansion joints, mouldy bath & shower sealant and shrunken worktop sealant alike.
For a small place like Farnham, remedial sealant is planned like any other job: the journey and access are simply agreed in advance. Once we are there, the bathroom or kitchen gets the same care as anywhere else.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Farnham (CM23)
- Region
- Hertfordshire
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Mouldy bath & shower sealant
Mould often spreads under the bead as well as through it. We treat the exposed joint once the bead is out.
Worktops & kitchens
Old kitchen sealant pulls back from the wall over time. We strip it, degrease the joint and reseal in a colour to suit.
What happens on the day
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours, depending on how many layers have to come out from start to finish. For a village or hamlet like Farnham, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we work out whether the problem is the sealant, movement or a leak.
- 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’re told about anything else we found.
Before we arrive
- Keep children and pets away from the work area
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Advice
Farnham homes and their sealant
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.
For site and facilities teams at buildings such as Farnham Church of England Primary School, we reseal washrooms and kitchens in schools and businesses as well as homes. If you live in an older home near Church of St Mary the Virgin, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Farnham is about 2 miles north of Bishop's Stortford, in Hertfordshire. If you need remedial sealant in Farnham, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We are based in Crawley and cover Hertfordshire, Farnham included. Across Hertfordshire, we cover 381 places, and Farnham is one of them. We also work in Chelmsford, around 19 miles away.
We work across CM23 for remedial sealant. We also cover the places around Farnham: Uppend (1 mile north), Mount Pleasant (1 mile north), Manuden (2 miles north-east), Bentfield Green (2 miles east) and Stansted Mountfitchet (2 miles east). We also work in nearby towns such as Stevenage (14 miles west), Hoddesdon (12 miles south-west), Hertford (12 miles south-west), Ware (10 miles south-west), Baldock (15 miles north-west) and Broxbourne (13 miles south-west).
What’s near Farnham
In Farnham, that means homes and buildings near St Mary's Catholic School and the streets around them. The closest station to Farnham is Stansted Mountfitchet station, roughly 2.4 miles east. Other landmarks nearby include Moated mound (1.7 miles south-west) and Herts and Essex Hospital (2.8 miles south-east). Open spaces near Farnham include Portingbury Hills and Aubrey Buxton Nature Reserve.
Farnham questions
Can you do remedial sealant in Farnham?
Yes, Farnham is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Do you cover smaller places like Farnham?
Yes. Farnham is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What does remedial sealant cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before work begins.
How long does the work take?
That depends on how many layers there are and how many joints. We will tell you before we start.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Farnham, along with the rest of our area.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Someone sealed over the old bead. Can you fix it?
Yes. We cut out all the layers and clean off the film, then the joint is resealed once.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Why act early in Farnham
Repeat failures have a cause. Taking time to find the cause, whether it’s movement, a leak or the wrong product, is what stops it happening again. Around Farnham, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- More than 20 years in sealant work
- Experience in homes, commercial sites and hotels
- Old sealant always removed completely
Read what affects the cost and our reviews.
What we are called out for in Farnham
How a joint is built matters as much as the product. A bead bonded on three sides, or laid too thick, can’t flex, so it tears when the joint moves. Backing sets the depth and stops that.
Common reasons people contact us include:
- Mould trapped under a layer of silicone
- Torn expansion joints
- Kitchen joints letting water behind the worktop
- Sealant applied over old sealant that has lifted
Letting a property close to Stansted Mountfitchet station? Then botched sealant from a previous quick fix is easier to strip out between tenants.
What to look for in a quote
- How long the guarantee is
- What product goes in the joint
- Are they insured?
- How the surfaces are prepared before sealing
Also near Farnham
What else we do in Farnham
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Run the fan after every shower
- Keep bleach and abrasives off the bead
- Keep movement joints clear of mortar and paint
- Act on a lifting corner right away
If the joint ever needs renewing, have it cut out, not sealed over. Over-sealing is how many remedial jobs start.
Leaks through failed sealant grow over time. Every shower or downpour sends more water through, into floors, walls or ceilings. Early action keeps it to a sealant job.
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Plumbing leaks behind walls or under trays
- Movement from fittings that aren’t supported
- A cracked shower tray or bath (that needs repair or replacing)
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Failed movement joints
- Mouldy bath & shower sealant
- Expansion joints
- Shrunken worktop sealant
Quotes for remedial sealant in Farnham
There’s no set price list, because jobs vary so much. What we look at:
- Mould in or behind the old joints
- The old material and how stubborn it is
- The number of rooms or windows
- When we can work, for business premises
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
When you call or email, it’s useful to know:
- Pictures of the joints, sent by email
- The rough size of the job
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.