West Sussex · England
Window Mastic in Plummers Plain
Professional window mastic in and around Plummers Plain, with old sealant always removed completely and a one-year guarantee.
- Leaking joints at the ends of sills
- Cracked or shrunken mastic around the frame
- Whistling draughts around closed windows
Window mastic in Plummers Plain
Most frames have an outside joint and an inside one. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. If you have gaps left after new windows were fitted and gaps between the frame and the inside reveal, we can put it right.
Homes in small places like Plummers Plain often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Each job carries a 12-month guarantee, large or small.
- Place
- Plummers Plain (RH13)
- Region
- West Sussex
- Cover
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Plummers Plain
Every job gets its own quote. This is what makes a difference:
- The number of rooms or windows
- Any mould that needs treating
- The product the joint needs
- The amount of work
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email.
What we need to know
What to tell us when you ask for a quote:
- Where the property is
- Roughly how big the job is
- Photos by email, if that is easy
- Any access issues, like height or stairs
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or email us.
Also near Plummers Plain
What else we do in Plummers Plain
Do you need window mastic in Plummers Plain?
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
The problems people normally mention when they call include:
- Black, perished sealant on frames
- Hard, cracked sealant around windows
- Sealant in the wrong colour for the frame
- Draughts coming in around windows and doors
Rented homes near Faygate station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Comparing quotes
- What the cure time is
- Whether they seal over old material or remove it
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Make sure the drainage slots are not blocked
- Do not use solvent cleaners on the joint
- Keep paint and stain on wooden frames in good order
- Use gentle cleaners on frames and sealant
Silicone can’t generally be painted, so if you are planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
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.
How the job changes by surface
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We can talk through the options.
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.
Honest limits
To be straight with you, some problems need a different trade:
- Faulty window hardware
- Draughts through the window seals rather than the frame
- Damp coming through the wall itself rather than the frame joint
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.
Surfaces we seal
- Composite doors
- Patio & French doors
- uPVC windows
- Window sills
- Aluminium frames
- Timber windows & doors
How it works
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a few frames, or a day or more for a whole house. For a village or hamlet like Plummers Plain, 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 look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us if parking is tricky
- Clear the area around the work
Get a quote
If you’re in Plummers Plain and need window mastic, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Read more
What window mastic looks like in Plummers Plain
Historic houses like Tyes Place (about 2.9 miles east) are a reminder that the area around Plummers Plain has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
For an older house near a landmark such as St Mary's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For site and facilities teams at buildings such as Newells Preparatory School, larger buildings have plenty of frames, and the mastic around each one ages.
Plummers Plain is about 4 miles east of Horsham, in West Sussex. Homes, rented property, offices and hotels in Plummers Plain can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our West Sussex coverage runs to 371 places, and Plummers Plain is one of them.
We work across the RH13 postcode area for window mastic. We cover properties on Handford Way, Handcross Road and Hammerpond Road and the roads around them. We also cover Slaugham (1 mile east), Lower Beeding (1 mile south-west), Handcross (2 miles north-east), Mannings Heath (2 miles west) and Crabtree (2 miles south-west). We also work in nearby towns such as Crawley (5 miles north-east), Horsham (4 miles west), Haywards Heath (7 miles south-east), Burgess Hill (8 miles south-east), East Grinstead (11 miles north-east) and Shoreham-by-Sea (14 miles south).
Landmarks near Plummers Plain
We work in homes and buildings around The Wheatsheaf pub, among other places. For rail, the closest station is Faygate station, about 3.8 miles north of the centre. Nearby you will also find Horsham Hospital (4.4 miles north-west). Green spaces nearby include Tilgate Lake and Warnham LNR.
FAQs for Plummers Plain
Is Plummers Plain within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Faygate station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we’ll tell you.
Do you have sealant for grey or black windows?
Yes, in most cases. Mention the frame colour when you ask for a quote and we will use the nearest match.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Can you do upstairs windows?
Normally, yes. Access is planned before any work starts.
For landlords and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.