West Sussex · England
Alfold Bars Window Mastic
Window mastic for Alfold Bars, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
- Cracked internal joints between frame and plaster
How we handle window mastic in Alfold Bars
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. Common call-outs are for gaps where the sill meets the wall and gaps left after new windows were fitted, across uPVC windows, patio & French doors and timber windows & doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Alfold Bars is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Place
- Alfold Bars (RH14)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026

Landlords, agents and businesses in Alfold Bars
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
We also work for property managers and facilities teams in Alfold Bars and across West Sussex. We can quote a run of properties together.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Repaint timber before it’s bare
- Do not use solvent cleaners on the joint
- Look round the frames every year or so
- Wash the frames with mild soapy water
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
What the job involves on each surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
Frames and glazing around Alfold Bars
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Schools such as Loxwood Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Alfold Bars is about 9 miles west of Horsham, in West Sussex. Whether you are in the middle of Alfold Bars or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Alfold Bars is one of 371 places in West Sussex where we work. We also work in Crawley, around 14 miles away.
All of RH14 is covered for window mastic. Whether your property is on Pigbush Lane and Oakhurst Lane or anywhere close by, we can help. Other places close to Alfold Bars include Alfold (1 mile north), Loxwood (1 mile south), Ifold (2 miles south-west), Plaistow (2 miles south-west) and Durfold Wood (3 miles west). Further out, we also cover Crawley (14 miles east), Horsham (9 miles east), Broadfield (14 miles east), Storrington (12 miles south), Billingshurst (6 miles south-east) and Bewbush (13 miles east).
Landmarks near Alfold Bars
In Alfold Bars, that means homes and buildings near The Crown pub and Fir Tree Copse. Not far away are Shillinglee Lake.
What happens on the day
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. Most jobs take anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Alfold Bars, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
- Clear items away from the joints we’re working on
Get a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Read more
Common questions in Alfold Bars
Will you come out to Alfold Bars?
Yes. Alfold Bars is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
What guarantee comes with window mastic in Alfold Bars?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
How long should I leave it?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Can you do the inside joint as well?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Can landlords and businesses book you?
Yes, we do. We work in homes, commercial premises and hotels, and we’re fully insured.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
What does window mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or drop us an email with a short description of the job.
Quotes for window mastic in Alfold Bars
There’s no set price list. What we look at:
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- The number and length of the joints
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Asking for a quote
When you call or email, it’s useful to know:
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
If you are in Alfold Bars and need window mastic, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Faulty window hardware
- Soft or decayed wood in the frame
- A door that needs adjusting, rehanging or new seals
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- Window sills
- Composite doors
- uPVC windows
Signs you need window mastic in Alfold Bars
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
If you can see any of these, it’s time to have the joints looked at:
- Rushed sealant from a window installation
- Cracked or shrunken mastic around the frame
- Cold air getting in at the frame edge
- Damp patches on the reveal after heavy rain
If you live in an older home near Church of St Nicholas, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before you book
- Who turns up on the day
- Are they insured?
- Which colour the sealant will be
- The length of the guarantee
