Greater London · England
Blendon Remedial Sealant
Professional remedial sealant in and around Blendon, with old sealant always removed completely.
- Sealant peeling off a dusty or damp surface
- Decorators’ caulk around a bath or shower
- Repeat leaks from the same joint
Your questions about remedial sealant in Blendon
I let a flat near Albany Park station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Do you work for hotels and guest houses in Blendon?
Yes, hotels and guest houses are among the places we work. Rooms can be done a few at a time, so the building stays open.
Does remedial work come with a guarantee?
Yes, with our one-year guarantee. Where we’ve flagged another fault, it needs fixing for the joint to last.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
How much does remedial sealant cost in Blendon?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
About our remedial sealant in Blendon
A joint that keeps letting you down needs more than another bead. It helps to have pictures when you ring 0345 464 0079 or drop us an email. We work on leaking tray & enclosure joints, mouldy bath & shower sealant and shrunken worktop sealant, and common reasons people get in touch are smears and lumps from a botched reseal and a shower that leaks however often it’s resealed.
Hard London water leaves limescale on sealant, grout and taps alike. In Blendon, remedial sealant is as much about a room looking cared for as about keeping water out.
Big or small, it’s backed by our 12-month guarantee.
- Where
- Blendon (DA5, DA15, DA6)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
Before we leave, we go over the finished joints with you. The work normally takes a few hours, depending on how many layers have to come out, depending on the size of the job. For a job in Blendon, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We protect the surfaces around the joint.
- The botched or failed sealant is cut away completely.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- You get the cure time and our view on why the joint failed.
Preparing for the visit
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
How to get a quote
Every job is quoted individually, so the first step is telling us about yours. Just phone 0345 464 0079 or drop us an email with the details.
Read more
Also in Blendon
What remedial sealant looks like in Blendon
London has hard water, so limescale builds up on sealant, grout and fittings. London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, so tired sealant is best dealt with early.
In the older streets around St James the Great, older homes can move a little, which is hard on rigid grout and tired sealant. For site and facilities teams at buildings such as Blackfen School for Girls, 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.
Blendon is about 1 mile south-east of Welling, in Greater London. We carry out remedial sealant for homes and businesses in Blendon and nearby, as part of our work across Greater London. We cover 764 towns and villages across Greater London, from the larger towns to small villages. For nearby work, see our London page.
Postcode districts we cover here for remedial sealant: DA5, DA15 and DA6. Streets in the area include Penn Lane, Hurst Road and Brook Lane, and we cover them all. Blendon sits on or near the A221, so getting to you is simple. We also cover the places around Blendon: Bexley (1 mile south-east), Crook Log (1 mile north), Welling (1 mile north-west), Upton (1 mile north-east) and Bexleyheath (1 mile north-east). Larger places within reach include London (10 miles west), City of Westminster (13 miles west), Marylebone (13 miles north-west), Kensington (14 miles west), St Pancras (12 miles north-west) and Shoreditch (10 miles north-west).
Landmarks near Blendon
Locally, jobs take us to homes and businesses close to Danson Park, The Royal Oak Public House and Hurst Primary School and the streets around them. For rail, the closest station is Albany Park station, roughly 0.8 miles south of the centre. Nearby you’ll also find Metropolitan Police Museum (1.3 miles south-west) and Bexley Hospital (0.8 miles north-east). Open spaces near Blendon include Wansunt Pit and Summer Hill.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. 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.
Quotes for remedial sealant in Blendon
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The old material and how stubborn it is
- How many areas need sealing
- Any working-time requirements on site
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- How we’d reach the joints
- If someone has resealed it before
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
Common problems we fix in Blendon
Sealant needs a clean, dry surface with no grease on it. Soap film, dust, damp or old residue stop it gripping, so it starts lifting sooner than it should.
People generally contact us when they notice one of these:
- Over-sealed joints coming away
- Gaps opening along the back of the worktop
- A shower that leaks however often it’s resealed
- Decorators’ caulk around a bath or shower
Rented homes near Albany Park station change hands often, and failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
What your quote should include
- Whether the sealant suits the joint
- Whether they seal over old material or remove it
- Whether you can choose the colour
- Who turns up on the day
Surface by surface
Movement & expansion joints
Some movement joints have been filled with mortar or grout. We rake that out where it can be removed and seal with a flexible product.
Windows & doors
Failed frame mastic is often hard, cracked and in several layers. We remove it all and clean back to sound surfaces.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- Older mastics that may need an asbestos check before removal
- Water damage behind tiles that needs a tiler
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before you book.
Surfaces we seal
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Failed movement joints
- Expansion joints
- Leaking tray & enclosure joints
- Botched or over-sealed joints