Greater London · England
Window & door mastic in Shirley, Greater London
Window and door frames in Shirley need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Cracked or shrunken mastic around the frame
- Gaps between the frame and the inside reveal
- Untidy mastic left by window fitters
Window mastic in Shirley
Homes in Shirley have every kind of window: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We’re often asked to deal with gaps where the sill meets the wall and gaps between the frame and the inside reveal, across composite doors, window sills and patio & French doors.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first.
All our work is covered by a 12-month guarantee.
- Place
- Shirley (CR0, SE25, CR9)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Shirley
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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.
Shirley: your questions answered
Do you work for landlords with property near Elmers End station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
Is Shirley in your area for window mastic?
Yes. We work across London and the South East, and Shirley is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses and we’re fully insured.
How do I get a quote for window mastic in Shirley?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or email us and let us know what needs doing and where.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Is the new sealant paintable?
Not usually, if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
What do you need from me for a quote?
A short description and the location, plus pictures if you have them. If we need more, we’ll ask.
Towns and villages near Shirley
What else we do in Shirley
What we do, step by step
The work is kept neat and contained to the joints we’re treating, so you can get on with your day. Expect the work to take most of a day for a typical house, less for a few frames. In Shirley, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- 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.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
How to get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
Read more
What we’re called out for in Shirley
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
The problems people usually mention when they call include:
- Draughty joints inside around the window
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
- Cracked sealant at the sill ends
Rented homes near Elmers End station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
What your quote should include
- What happens if the job turns out different
- Whether all the old sealant comes out first
- The length of the guarantee
- How the surfaces are prepared before sealing
When something else is needed
To be straight with you, some problems need a different trade:
- Condensation trapped between the panes
- Faulty window hardware
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before booking.
What we seal
- Window sills
- Patio & French doors
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Composite doors
Quotes for window mastic in Shirley
The price is agreed before any work begins. It takes into account:
- The old material and how stubborn it is
- Whether there’s mould to deal with
- The product the joint needs
- The number and length of the joints
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
What we need to know
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- Photos by email, if that is easy
- Whether it has been sealed before
- The rough size of the job
Want a quote for window mastic? Please call 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Shirley homes and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
Schools such as Oasis Academy Shirley Park are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near St George The Martyr Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Shirley is about 2 miles north-east of Croydon, in Greater London. We provide window mastic to homes and businesses in Shirley and the surrounding area. 764 places in Greater London are on our list, from the larger towns to small villages. For nearby work, see our London page (8 miles or so).
All of CR0, SE25 and CR9 is within our area for window mastic, from the main roads to the quietest streets. That includes homes and businesses on Poppy Lane, Homer Road and Craven Road and the roads around them. Being close to the A232, Shirley is simple for us to get to. We also cover the places around Shirley: Monks Orchard (1 mile north), Shirley Oaks (1 mile west), Addiscombe (1 mile west), Ashburton (1 mile north-west) and Woodside (1 mile north-west). We also work in nearby towns such as London (8 miles north), City of Westminster (10 miles north-west), Marylebone (10 miles north-west), Kensington (10 miles north-west), St Pancras (10 miles north) and Shoreditch (10 miles north).
Near you in Shirley
Locally, jobs take us to homes and businesses close to The Cricketers pub, Ashburton Park and Orchard Way Primary School and the streets around them. For rail, the closest station is Elmers End station, about 1.2 miles north. A little further out are Crystal Palace Museum (2.8 miles north) and St George's Walk (2 miles west). The countryside around Shirley includes Duppas Hill and Bramley Bank.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Wipe condensation off the frames
- Keep solvents and bleach off the sealant
- Repaint timber before it’s bare
- Wash the frames with mild soapy water
Try not to touch the new joint while it cures, following the cure time we give you. Don’t point a pressure washer at the joints.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.