Greater London · England
Paddington Window Mastic
Mastic around window and door frames, sills and patio doors for Paddington, backed by a one-year guarantee. Ask us for a quote.
- Rain getting in at the frame or under the sill
- Cracked or shrunken mastic around the frame
- Mastic that is falling out in pieces
Window mastic in Paddington
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. If you have cold air getting in at the frame edge and untidy mastic left by window fitters, we can put it right, whatever the surface.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, letting in draughts and water.
All of our work is guaranteed for twelve months, in Paddington and everywhere else we cover.
- Where
- Paddington (W2, W1H, W1U)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about window mastic in Paddington
Do you work for landlords with property near London Paddington station?
Yes, we work for landlords and letting agents. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Is Paddington in your area for window mastic?
Yes. Our work covers London and the South East, and Paddington is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
Can you match the sealant to my frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we’ll match it as closely as we can.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you seal inside as well as outside?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
For landlords and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Landlords and letting agents in Paddington can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
Signs you need window mastic in Paddington
Mastic ages in the weather. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
Any of these means the joints need attention:
- Water coming in at the bottom corners of a door
- Cracked sealant at the sill ends
- Draughts coming in around windows and doors
- Black, perished sealant on frames
If you live in an older home near Church of St John the Evangelist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- Is VAT in the price?
- Whether all the old sealant comes out first
- What preparation is included
- Which colour the sealant will be
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- When we can work, for business premises
- The number and length of the joints
- Which sealant suits the joint
- The number of rooms or windows
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Helping us 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
- Any previous sealing or DIY work
- How we’d reach the joints
- Where the job is, and your postcode
Want a quote for window mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and send you a clear quote before any work starts.
What window mastic looks like in Paddington
In a converted house or block, who looks after the windows depends on the lease, so check that before booking. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like International Community School? Then larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near London Paddington station, renewing tired window mastic between tenants heads off draught and damp complaints.
Paddington is about 1 mile west of City of Westminster, in Greater London. If you need window mastic in Paddington, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. We cover 764 towns and villages across Greater London, from the larger towns to small villages.
We work across the W2, W1H and W1U postcode area for window mastic. Whether your property is on Harrow Road, Craven Road and Harbet Road or anywhere close by, our applicators can take on the job. Paddington is on the A5 and A40, so it’s easy for us to get to. We also cover Paddington Green (1 mile north-west), Hyde Park Estate (1 mile south-east), Connaught Village (1 mile south-east), Tyburn (1 mile south-east) and Little Venice (1 mile north-west). Further out, we also cover London (4 miles east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Near you in Paddington
In Paddington, that means homes and buildings near Royal Society of Medicine Library, Fountains Abbey pub and Royal Parks of London. Also close by are North Westminster Community School (less than half a mile north-east) and Hampden Gurney CofE Primary School (less than half a mile east). Paddington has its own railway station: London Paddington station. Well-known places in the area include Harrods (1.3 miles south) and London Toy & Model Museum (0.5 miles south-west). Open spaces near Paddington include Greville Place nature reserve and The Long Water.
How it works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a few frames, or a day or more for a whole house, including the tidy-up. For a job in Paddington, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Getting a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Related advice
When something else is needed
To be straight with you, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- Faulty window hardware
- A failed sealed unit that has misted up
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Where we work in Paddington
- uPVC windows
- Aluminium frames
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Do not use solvent cleaners on the joint
- Keep paint off silicone joints
- Keep jet washers away from the mastic
- Clean frames with a soft cloth and soapy water
Most silicone sealants will not take paint, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Towns and villages near Paddington
More services for Paddington
How the job changes by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.