Greater London · England
Window & door mastic in Catford, Greater London
Problem with your window and door frames in Catford? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Gaps between the frame and the inside reveal
- Cracked sealant at the sill ends
- Black, perished sealant on frames
Window mastic in Catford, done properly
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we’ll say so. Typical jobs include old mastic that has gone black or come away and draughts coming in around windows and doors, across composite doors, uPVC windows and aluminium frames.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Catford.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Location
- Catford (SE6, BR1)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Frames and glazing around Catford
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Catford is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you live in an older home near Church of St Laurence and Community Centre, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Catford Bridge station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Catford is about 5 miles east of Streatham, in Greater London. From the centre of Catford to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, and Catford is one of them.
Jobs for window mastic in SE6 and BR1 is quoted and booked the same way as anywhere else. Whether your property is on Bargery Road, Penerley Road and Inchmery Road or a nearby road, we can help. We also cover Bellingham (1 mile south-west), Southend (1 mile south-west), Ladywell (1 mile north), Hither Green (1 mile north-east) and Bell Green (1 mile south-west). We also work in nearby towns such as London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles north-west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
What’s near Catford
Around Catford, our work takes us to homes and buildings near The London & Rye pub, Trinity Church of England School and Forster Memorial Park. Catford’s nearest station is Catford Bridge station, about 0.5 miles north-west of the centre. Nearby you will also find Greenwich Castle (2.6 miles north) and University Hospital Lewisham (0.8 miles north). Green spaces nearby include Downham Woodland Walk and Knight's Hill.
FAQs for Catford
Is parking a problem for a job in Catford?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
I let a flat near Catford Bridge station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that’s a different fix, and we’ll say so.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
What should I tell you?
A short description and the location, plus photos if you have them. We’ll ask anything else we need to know.
Does the work come with a guarantee?
Yes, for 12 months. A yearly look at the joints helps them last.
Why act early in Catford
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
Why Catford customers choose us
- White, clear, grey or coloured to suit, where the product allows
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
- Homes, businesses and hotels
Take a look at what affects the cost and what customers say.
What the job involves on each surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. We prepare and reseal every joint, backing the deep ones.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. It comes out, deep gaps get backing rod and the joint is resealed.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Make sure the drainage slots are not blocked
- Don’t use solvent cleaners on the joint
- Clean frames with a soft cloth and soapy water
- Repaint timber before it’s bare
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
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.
How we quote for window mastic
The price is agreed before any work begins. It takes into account:
- Any working-time requirements on site
- How easy the joints are to reach
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and give you a clear price before any work starts.
What to tell us for a quote
To make quoting easier, please include:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Whether it has been sealed before
- The problem you’ve noticed
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or drop us an email and describe the job.
Nearby places to Catford
What else we do in Catford
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
How it works
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work begins. The work generally takes anything from an hour or two to a full day, depending on how many frames there are. In a London area like Catford, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
How to get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
Advice
When it is not the sealant
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Penetrating damp from a failed cavity tray or render
- Rotten timber, which needs a joiner first
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Catford
- Composite doors
- Window sills
- Patio & French doors
- uPVC windows
- Aluminium frames
- Timber windows & doors