Slough · England
Window & door mastic in Farnham Royal, Slough
Window mastic across Farnham Royal and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracked internal joints between frame and plaster
- Whistling draughts around closed windows
- Gaps left after new windows were fitted
Windows and doors in Farnham Royal
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Cliveden (about 3.3 miles west) are a reminder that the area around Farnham Royal has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Burnham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For an older house near a landmark such as Church of St Mary, the joint between an old wall and a newer frame is generally the first place rain gets in.
Farnham Royal is about 2 miles north of Slough, in Slough. Wherever you are in the SL2 postcode area, we can carry out window mastic at your property. Farnham Royal is one of 31 places in Slough we cover for window mastic. You can also see our page for Reading, roughly 17 miles from Farnham Royal.
We cover every part of SL2 for window mastic. Local streets include Church Road, Sospel Court and Montague Close, and we cover them all. We also cover the places around Farnham Royal: Britwell (1 mile south-west), East Burnham (1 mile north-west), Farnham Common (1 mile north), Egypt (1 mile north) and Slough (2 miles south). Larger places within reach include Langley (4 miles south-east), Upton (3 miles south-east), Datchet (4 miles south-east), Ditton (4 miles south-east), Poyle (6 miles south-east) and Colnbrook (6 miles south-east).
Near you in Farnham Royal
Typical jobs here are in homes near The Crown Public House, Cocksherd Wood and Caldicott School, among other places. The nearest railway station is Burnham station, about 1.8 miles south-west. Other landmarks nearby include Wexham Park Hospital (1.8 miles east) and Windsor Castle (4 miles south). Not far away are Burnham Beeches and Taplow Lake.
Window mastic in Farnham Royal
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. Common call-outs are for sealant in the wrong colour for the frame and rain getting in at the frame or under the sill, on patio & French doors, aluminium frames and timber windows & doors.
Around Farnham Royal, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is covered for a year after we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Place
- Farnham Royal (SL2)
- Wider area
- Slough
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take most of a day for a typical house, less for a few frames. Somewhere like Farnham Royal needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
Getting ready for the visit
- Let us know about parking restrictions
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Related advice
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, 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. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
When to call us in Farnham Royal
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, while a joint packed solid cannot stretch. That’s what backing rod is for.
Look out for these signs:
- White mastic on grey or black frames
- Mastic that’s falling out in pieces
- Gaps left after new windows were fitted
- Draughty joints inside around the window
Managing a site like St Mary's Farnham Royal CofE Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- How long to leave it before use
- How hidden problems are handled
- How the surfaces are prepared before sealing
- Whether VAT is included
Farnham Royal questions
Do you cover smaller places like Farnham Royal?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Farnham Royal for window mastic?
Yes. We work across London and the South East, and Farnham Royal is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you match the sealant to my frames?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
Can landlords and businesses book you?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or send us an email.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Do you have insurance?
Yes. We’re fully insured.
How to look after the new joints
How long the joints last depends on use and care. Here’s what we suggest:
- Make sure the drainage slots aren’t blocked
- Paint up to the joint, not over it
- Do not use solvent cleaners on the joint
- Keep timber frames painted
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
Nearby places to Farnham Royal
More services for Farnham Royal
What sealant work cannot fix
In fairness, some problems need a different trade:
- Damp coming through the wall itself rather than the frame joint
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Composite doors
- Patio & French doors
- Window sills
What affects the cost of window mastic
Your quote is based on your job. We look at:
- When we can work, for business premises
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
Leaving a failed joint generally makes the job bigger, not smaller. If you’re unsure, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
When you call or email, it’s useful to know:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- Roughly how big the job is
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job.
What the job involves on each surface
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 check before we reseal.
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.