Slough · England
Window Mastic in Farnham Common
Mastic around window and door frames, sills and patio doors for Farnham Common, backed by a 12-month guarantee. Call for a quick quote.
- Gaps where the sill meets the wall
- A bead that doesn’t match the frame
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Farnham Common
The new joint does not have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. If you have rushed sealant from a window installation and cracked or shrunken mastic around the frame, we can help, on uPVC windows, timber windows & doors and patio & French doors alike.
Somewhere as small as Farnham Common, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a one-year guarantee.

- Place
- Farnham Common (SL2)
- Region
- Slough
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about window mastic in Farnham Common
Can you help a landlord with a rental near Burnham station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Can you do window mastic in Farnham Common?
Yes, Farnham Common is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Do you work on first-floor windows?
Usually, yes. Access is planned before work begins, so mention the height and anything in the way.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Do you guarantee window mastic?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Also near Farnham Common
Other services in Farnham Common
Why it’s worth doing now in Farnham Common
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. Where a wall is exposed, as many are in small places like Farnham Common, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit is normally more efficient than separate visits. You will get one clear quote for the whole job.
What you get with us
- Every job guaranteed for a year
- Homes, businesses and hotels
- Anti-fungal sanitary silicone in wet areas
- Tidy, careful work
See our cost guide or what customers say.
How we quote for window mastic
The quote reflects the job in front of us. We look at:
- Access and height
- Whether there’s mould to deal with
- The amount of work
- Working hours on commercial sites
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email and we’ll talk you through it.
What we need to know
What to tell us when you ask for a quote:
- The rough size of the job
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before we start.
Frames and glazing around Farnham Common
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. With historic houses such as Cliveden (about 3.3 miles west) nearby, there’s older building stock in the area around Farnham Common as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around St John the Evangelist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Burnham station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Farnham Common Junior School? Then its window and door frames need their mastic kept sound, just like a home’s.
Farnham Common is about 3 miles north of Slough, in Slough. If you need window mastic in Farnham Common, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover Slough from our Crawley base, Farnham Common included. Across Slough, we cover 31 places, Farnham Common among them. We also work in Reading, around 17 miles away.
Postcode districts we cover here for window mastic: SL2. Local streets include Temple Way, Common Wood and Badgers Wood, all of which we cover. Nearby, we also carry out window mastic in Egypt (1 mile north-west), East Burnham (1 mile south-west), Hedgerley (1 mile north-east), Farnham Royal (1 mile south) and Littleworth Corner (2 miles west). We also work in nearby towns such as Slough (3 miles south), Cippenham (3 miles south), Chalvey (4 miles south), Langley (4 miles south-east), Upton (4 miles south) and Burnham (3 miles south-west).
Near you in Farnham Common
Typical jobs here are in homes near The Royal Oak pub, Cocksherd Wood and Caldicott School. Farnham Common’s nearest station is Burnham station, roughly 2.9 miles south-west. Other landmarks nearby include Wexham Park Hospital (2.4 miles south-east). The countryside around Farnham Common includes Burnham Beeches and Taplow Lake.
What sealant work can’t fix
To be straight with you, some problems need a different trade:
- Worn gaskets, brush seals or a door that has dropped
- Damp problems in the wall away from the window
- Condensation trapped between the panes
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
- Window sills
- Timber windows & doors
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Some sealant jobs are within reach of a careful DIYer, 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.
For landlords and businesses
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes most of a day for a typical house, less for a few frames, depending on the size of the job. For a village or hamlet like Farnham Common, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- 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
- Mention any tricky access
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work.
Related advice
Surface by 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.
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.
