Greater London · England
Window & door mastic in Purley, Greater London
Window mastic across Purley and nearby, with old sealant always removed completely and a 12-month guarantee.
- Cracked or shrunken mastic around the frame
- Rain getting in at the frame or under the sill
- Gaps where the sill meets the wall
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Ventilate rooms so frames don’t stay wet inside
- Avoid harsh chemicals near the mastic
- Keep jet washers away from the mastic
- Look round the frames every year or so
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Window mastic in Purley, done properly
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. We are often asked to deal with rain getting in at the frame or under the sill and white mastic on grey or black frames, on aluminium frames, window sills and uPVC windows.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking, and access in Purley is something to talk through when you book.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Location
- Purley (CR8, CR2, CR5)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Purley
We quote each job individually. This is what makes a difference:
- The product the joint needs
- Any working-time requirements on site
- Access and height
- The size of the job
Combining jobs into one visit is normally more efficient than separate visits. We’ll send you a clear quote for the lot.
What to tell us for a quote
When you call or email, it’s useful to know:
- Photos by email, if that’s easy
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or send us an email.
FAQs for Purley
Do you cover Purley for window mastic?
Yes. Our work covers London and the South East, and Purley is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Can parking be tricky for a visit in Purley?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you get sealant to suit coloured frames?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
How much does window mastic cost in Purley?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Are you fully insured?
Yes. We are fully insured.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we are using and why.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
Should I try it myself first?
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 doesn’t work out, we can still put it right.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Purley
Also in Purley
What we’re called out for in Purley
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid cannot stretch. Backing rod sets the right depth.
These are the problems we’re asked about most:
- Cracked internal joints between frame and plaster
- Black, perished sealant on frames
- Mastic that has split away from the wall
- Damp patches on the reveal after heavy rain
As a London address, Purley can be tricky for parking: let us know about parking bays, permits or a driveway.
Questions to ask before you book
- How the surfaces are prepared before sealing
- What the quote includes, VAT included or not
- What happens if they find a problem under the old sealant
- What insurance they hold
Why act early in Purley
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. In a flat in Purley, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why us?
- We are fully insured
- You choose the colour before work begins
- Any old sealant cut out fully, not covered over
- 4.9 on Google from 180+ five-star reviews
What the job involves on each surface
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. Each is cleaned out and resealed.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
The process
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes most of a day for a typical house, less for a few frames. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Tell us if parking is tricky
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
Getting a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Read more
Window mastic in Purley: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
In the older streets around St Swithun's, the joint between an old wall and a newer frame is generally the first place rain gets in. Schools such as Christ Church CofE Primary School (Purley) are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Purley is about 2 miles south-west of Croydon, in Greater London. From the centre of Purley to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. 764 places in Greater London are on our list, large and small. London is on our list too, about 11 miles from Purley.
Our applicators cover all of CR8, CR2 and CR5 for window mastic and the streets around it. Streets in the area include High Street, Church Road and Brighton Road, all of which we cover. Purley is on the A2022, so it’s easy for us to get to with everything needed for window mastic. If you’re just outside Purley, we cover Peaks Hill (1 mile north-west), Woodcote (1 mile west), Russell Hill (1 mile north), Roundshaw (1 mile north-west) and Woodcote Green (1 mile west). Larger places within reach include London (11 miles north), City of Westminster (12 miles north), Marylebone (13 miles north), Kensington (12 miles north), St Pancras (13 miles north) and Shoreditch (13 miles north).
Around Purley
We work in homes and buildings around The Jolly Farmers pub, Laleham Lea School and Thomas More Catholic School, among other places. There’s a railway station in Purley itself: Purley station. A little further out are Purley War Memorial Hospital (within half a mile north-east) and St George's Walk (2.7 miles north). For a walk, there’s Duppas Hill and Foxley Wood.