Surrey · England
Horne Window Mastic
Window mastic for Horne, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Whistling draughts around closed windows
- Cracked or shrunken mastic around the frame
- Damp patches on the reveal after heavy rain
Window mastic for homes and businesses in Horne
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We are often asked to deal with draughts coming in around windows and doors and untidy mastic left by window fitters, across timber windows & doors, composite doors and window sills.
Somewhere as small as Horne, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Horne (RH6)
- Region
- Surrey
- Cover
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Frames and glazing around Horne
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near Church of St Mary the Virgin, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Horne is about 4 miles east of Horley, in Surrey. For window mastic in and around Horne, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We cover Surrey from our Crawley base. Horne is one of 395 places in Surrey where we work for window mastic. Our Crawley page covers work nearby, about 7 miles away.
We work across RH6 for window mastic and the streets around it. You’ll find streets such as Church Road and Whitewood Lane, all of which we cover. Close by, we work in Whitewood (1 mile north-east), Blindley Heath (1 mile north-east), Newchapel (2 miles south-east), Lingfield Common (3 miles east) and Domewood (3 miles south). Larger places within reach include Epsom (13 miles north-west), Horley (4 miles west), Redhill (5 miles north-west), Ewell (14 miles north-west), Reigate (6 miles north-west) and Caterham (7 miles north).
Near you in Horne
In Horne, that means homes and buildings near The Jolly Farmer pub, among other places. The nearest railway station is Godstone station, roughly 2.6 miles north-east of the centre. Well-known places in the area include East Surrey Hospital (4.2 miles north-west) and Bletchingley Castle (3.8 miles north). For a walk, there’s Bay Pond and Hedgecourt Lake.
Towns and villages near Horne
Also in Horne
Why act early in Horne
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic normally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we’ll say so. In a small place like Horne, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
Why Horne customers choose us
- 20+ years of sealant experience
- Anti-fungal silicone where joints get wet
- An ARBOMaster approved applicator
- Every job guaranteed for a year
See our cost guide or what customers say.
Landlords, agents and businesses in Horne
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.
Horne questions
Is Horne within the area you cover?
Yes, Horne is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Horne for window mastic?
Yes, Horne is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Is the new sealant paintable?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Tell us if you are decorating and we will choose accordingly.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What does window mastic cost?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or email us with a short description of the job.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
The process
We keep the work tidy and contained to the joints we are treating. Expect the work to take anything from an hour or two to a full day, depending on how many frames there are, and we explain the cure time before we leave. For a village or hamlet like Horne, the journey is planned in advance: 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.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Mention any parking rules near the property
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
Related advice
How the job changes by 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.
uPVC windows
We clean the frame edge carefully so the plastic is not marked, then the sealant goes in between frame and wall and tooled smooth.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep drainage slots and sill grooves clear
- Avoid harsh chemicals near the mastic
- Wipe condensation off the frames
- Look round the frames every year or so
Have a look at the joints once a year, ideally after winter. Small splits are simple to catch before they leak, and if anything looks wrong, just ring 0345 464 0079 or drop us an email.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Signs you need window mastic in Horne
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
Keep an eye out for any of the following:
- White mastic on grey or black frames
- Leaking joints at the ends of sills
- Hard, cracked sealant around windows
- Gaps left after new windows were fitted
Letting a property close to Godstone station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- Which colour the sealant will be
- The length of the guarantee
- Are they insured?
- Whether all the old sealant comes out first
What sealant work cannot fix
We won’t take on work that won’t last, so here’s what sealant cannot put right:
- Faulty window hardware
- Soft or decayed wood in the frame
- A failed sealed unit that has misted up
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- Window sills
- Composite doors