Surrey · England
Window & door mastic in Horley, Surrey
Window mastic for Horley and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Mastic that has split away from the wall
- Mastic that is falling out in pieces
- Cracked internal joints between frame and plaster
How we handle window mastic in Horley
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. Typical jobs include mastic that’s falling out in pieces and cracked internal joints between frame and plaster, across composite doors, uPVC windows and aluminium frames.
Walls in Horley that face the prevailing wind take the most weather, so the mastic there tends to fail first. Checking every frame, not just the obvious one, is time well spent.
Your job is guaranteed for a year, as with all our work.
- Where
- Horley (RH6)
- Region
- Surrey
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid blasting the frames with a pressure washer
- Wash the frames with mild soapy water
- Keep drainage slots and sill grooves clear
- Air rooms to keep condensation down around windows
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
FAQs for Horley
Do you cover Horley for window mastic?
Yes. We work across London and the South East, and Horley is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
I let a flat near Horley station. Can you help?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. You can phone 0345 464 0079 or email us with the details for a clear quote.
Will you leave a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can you match the sealant to my frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we are using and why.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Do you work on first-floor windows?
Usually, yes. We plan safe access before the job, so mention the height and anything in the way.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Windows and doors in Horley
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Horley station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. For an older house near a landmark such as St Wilfrid's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Horley is about 5 miles north of Crawley, in Surrey. Horley gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Horley is one of 395 places in Surrey we cover.
All of RH6 is covered for window mastic, from the main roads to the quietest streets. Local streets include Station Road, High Street and Church Road, and we cover them all. Main roads around Horley include the A23 and B2036, which makes travel easy. We also cover Hookwood (1 mile south-west), Fernhill (2 miles south-east), Burstow (2 miles south-east), Smallfield (2 miles east) and Shipley Bridge (2 miles south-east). We also work in nearby towns such as Epsom (12 miles north), Redhill (4 miles north), Ewell (13 miles north), Reigate (4 miles north), Caterham (8 miles north-east) and Dorking (8 miles north-west). Horley is among the bigger towns we cover in Surrey.
What’s near Horley
Locally, jobs take us to homes and businesses close to The Bull pub and Oakwood School, among other places. The nearest railway station is Horley station, about 0.8 miles south-east of the centre. A little further out are Reigate Castle (4.5 miles north) and East Surrey Hospital (2.8 miles north). Not far away are Reigate Heath.
How the job changes by surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so they get particular care.
Nearby places to Horley
Also in Horley
The process
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. Most jobs take a few hours for a few frames, or a day or more for a whole house. Parking in a town like Horley is usually straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- Move anything stored near the joints
Getting a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
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What we’re called out for in Horley
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Keep an eye out for these signs:
- Rushed sealant from a window installation
- Old mastic that has gone black or come away
- Rain getting in at the frame or under the sill
- Draughty joints inside around the window
Schools such as Horley Infant School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What product goes in the joint
- When the joint can take water or movement
- Is VAT in the price?
- Are they insured?
Quotes for window mastic in Horley
Jobs vary more than people expect. What affects the quote:
- Which sealant suits the joint
- How many areas need sealing
- Access and height
- The number and length of the joints
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.