Buckinghamshire · England
North Lee Remedial Sealant
Problem with your failed sealant joints in North Lee? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Black mould underneath the bead
- Worktop sealant that has shrunk and split
- Floor or wall movement joints that have failed
Why it’s worth doing now in North Lee
Remedial work takes longer than a straight reseal, but rarely a lot: the work takes a few hours for most joints, depending on how much old sealant has to come out. Compared with chasing the same leak every few months, it’s time well spent. Older cottages and farmhouses around North Lee can have timber 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, the access and the products needed. Ask us for a quote and we will go through it with you.
Why choose Mr Mastic in North Lee
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
- Full insurance on every job
See what affects the cost and what customers say.
Remedial sealant in North Lee, done properly
Not every leak is a sealant leak. Cracked trays, leaking wastes and faulty valves often look like a sealant problem. If that is what we find, we will tell you rather than reseal something that will not fix it. We’re often asked to deal with sealant applied over old sealant that has lifted and floor or wall movement joints that have failed, across leaking tray & enclosure joints, botched or over-sealed joints and failed movement joints.
Being in a small place like North Lee makes no difference to the job itself: the journey and access are simply agreed in advance. Once we’re there, the bathroom or kitchen gets the same care as anywhere else.
We stand behind the work with a one-year guarantee.
- Location
- North Lee (HP22)
- Region
- Buckinghamshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Remedial sealant around North Lee
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
For site and facilities teams at buildings such as Stoke Mandeville Combined School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes. In the older streets around Church of St Mary, walls and floors in older homes can move, and sealant and grout show it first. For landlords with property near Stoke Mandeville station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
North Lee is about 3 miles south of Aylesbury, in Buckinghamshire. From the centre of North Lee to the outskirts, we cover remedial sealant for every kind of property. We cover 263 towns and villages across Buckinghamshire, from the larger towns to small villages. Oxford is on our list too, around 19 miles away.
We cover every part of the HP22 postcode area for remedial sealant. If you are just outside North Lee, we cover Nash Lee (1 mile south-east), Terrick (1 mile south-east), Chalkshire (1 mile south-east), Stoke Mandeville (1 mile north-east) and Ellesborough (1 mile south). Larger places within reach include Aylesbury (3 miles north), High Wycombe (10 miles south), Chesham (9 miles south-east), Marlow (14 miles south), Amersham (11 miles south-east) and Beaconsfield (13 miles south-east).
Local landmarks in North Lee
We work in homes and buildings around The Mandeville School, among other places. The nearest railway station is Stoke Mandeville station, roughly 1.1 miles north-east of the centre. Well-known places in the area include National Paralympic Heritage Centre (1.9 miles north) and Little Kimble Motte (1.7 miles south). For a walk, there’s Brush Hill Local Nature Reserve and Beacon Hill.
Towns and villages near North Lee
What else we do in North Lee
North Lee: your questions answered
Do you cover smaller places like North Lee?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Stoke Mandeville station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can you remove sealant that is been put over old sealant?
Yes. We cut out all the layers and clean off the film, before resealing with a single bead.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
How long does remedial resealing take?
The number of joints and layers decides it. You will have a timescale before any work begins.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Water damage behind tiles that needs a tiler
- A bath, tray or worktop that moves until it’s properly fixed
- A leaking trap, valve or supply pipe
If you’re not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in North Lee
- Mouldy bath & shower sealant
- Expansion joints
- Failed movement joints
- Botched or over-sealed joints
- Shrunken worktop sealant
- Leaking tray & enclosure joints
For landlords and businesses
Letting agents and landlords in North Lee can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
What happens on the day
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job normally takes a few hours, depending on how many layers have to come out. In a small place like North Lee, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- We give you the cure time and explain what caused the failure.
Before we arrive
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
How to get a quote
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
Surface by surface
Windows & doors
Some leaks around windows come from the wall or the window itself. We check the joint and tell you if it looks to be something else.
Worktops & kitchens
A loose worktop splits its sealant. That needs refixing before resealing, which we will point out.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Report a tray that rocks or a worktop that lifts
- Get the cause of a repeat leak found before resealing
- Keep the room well ventilated
- Always have old sealant cut out, not covered
Watch the joint over the first few weeks, particularly where the original failure was caused by movement. If anything changes, just phone 0345 464 0079 or email us.
Leaks through failed sealant grow over time. Each use pushes more water behind the bead, into whatever is behind or below. Early action keeps it to a sealant job.