Greater London · England
Floor & skirting joints in Lee, Greater London
Floor joints in Lee need attention? We cut out the old, prepare the joints and apply the right sealant.
- Gaps at thresholds between rooms
- Tiled floors with no room to move
- Caulk that has cracked where the floor moves
About our floor joint sealing in Lee
A threshold joint has to cope with feet, movement and sometimes water. We use a flexible product that suits both floors. Common call-outs are for cracked grout where a tiled floor needs a movement joint and cracked caulk along skirting in bathrooms and kitchens, across skirting boards, tiled floors and wet room & bathroom floors.
Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover, in Lee and beyond.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Location
- Lee (SE12, SE13, SE3)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
We will not take on work that won’t last, so these are the limits:
- Bouncy or failing floorboards
- Damaged concrete that needs breaking out and repairing
- Tiles that have lifted or broken
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Surfaces we seal
- Tiled floors
- Concrete floor joints
- Thresholds
- Wet room & bathroom floors
- Skirting boards
- Commercial floors
Work for landlords, hotels and businesses
If you manage several properties in or around Lee, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
When to call us in Lee
Grout is rigid, so a tiled floor with nowhere to move cracks along a grout line. Cracks often run straight along a line of joints, where a flexible joint should have been.
It’s worth asking for a quote if you see:
- Concrete floor joints that have broken down
- Worn sealant at door thresholds
- Floor edges that trap water and grime
- Skirting that has pulled away from the floor
Schools such as Brindishe Lee School are buildings too, and floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up.
Comparing quotes
- How long the guarantee is
- Is the old sealant removed completely?
- Who turns up on the day
- When the joint can take water or movement
What we do, step by step
On the day, we look over the joints with you first, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. Most jobs take a morning or an afternoon for most homes. In Lee, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, the floor type, the gap and the traffic are checked.
- Any old caulk, grout or sealant is raked or cut out.
- The joint is vacuumed clean and backing fitted where needed.
- We apply the sealant in a colour that suits the floor.
- We tool it neatly and tell you when it can be walked on and cleaned.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
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Can I do it myself?
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 fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Why it’s worth doing now in Lee
Waiting until the next redecoration can mean a winter of draughts and dirt in the gaps. It’s a quick job to seal them now for most homes. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Lee, the repair is bigger than a sealant job.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why choose Mr Mastic in Lee
- Colour picked to suit the job
- 180+ five-star Google reviews
- More than 20 years in sealant work
- Full insurance on every job
Take a look at what affects the cost and what customers say.
Other services in Lee
Questions from Lee
Is parking an issue for floor joint sealing in Lee?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Can you help a landlord with a rental near Lee station?
Yes. We work for letting agents and landlords as well as homeowners. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Do you seal warehouse floor joints?
Yes. We clean out the joints and reseal them with a product suited to the floor. Tell us what runs over the floor.
How long does floor joint sealing take?
Typically it takes a morning or an afternoon for most homes. Bigger jobs take longer, and we’ll say how long yours will take.
Where do you work from?
We work from Crawley. We cover Lee and the rest of Greater London, along with the rest of our area.
Can I choose the sealant colour?
Most of the time, yes. We’ll explain which colours are available and agree one before we start.
Do you come to Lee?
Yes, we do. Our applicators work in Lee.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Joints and finishes in Lee homes
Across Greater London, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and each moves in its own way. That’s why the skirting and threshold joints need a flexible seal. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
Community buildings like Church of the Good Shepherd are part of the picture too: joints in its floors, skirtings and thresholds need resealing as they wear. If you let a flat or house near Lee station, gaps at skirtings and thresholds are worth sealing between tenancies.
Lee is about 2 miles south of Greenwich, in Greater London. From the centre of Lee to the outskirts, floor joint sealing is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 764 places across Greater London. London is on our list too, around 6 miles away.
We work across SE12, SE13 and SE3 for floor joint sealing and the streets around it. If you need floor joint sealing at a property on Old Road, Manor Lane and Mallet Road or anywhere close by, we can help. Neighbouring places we cover for floor joint sealing include Hither Green (1 mile west), Horn Park (1 mile south-east), Lewisham (1 mile north-west), Ladywell (1 mile west) and Blackheath (1 mile north). Within a short drive, we also cover London (6 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (10 miles west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Near you in Lee
We work in homes and buildings around Manor House Gardens, Trinity Church of England School and International Academy of Greenwich and the streets around them. Lee has its own railway station: Lee station. A little further out are Lewisham Shopping Centre (1.1 miles north-west) and Prefab Museum (1.3 miles south). The countryside around Lee includes Summer Hill and Birdbrook Road Nature Reserve.
What affects the cost of floor joint sealing
Every job gets its own quote. This is what makes a difference:
- How many areas need sealing
- Which sealant suits the joint
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
Doing several joints on one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
What we need to know
When you contact us, it’s useful to know:
- The address or postcode of the job
- The type of property
- A few pictures by email, if you can
- Whether it has been sealed before
For floor joint sealing in Lee, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.