West Sussex · England
Window Mastic in Maplehurst
Window mastic for Maplehurst, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
- Black, perished sealant on frames
How we handle window mastic in Maplehurst
Frames and walls don’t move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. So the sealant has to stretch and recover, which is why we use a low-modulus product. We are often asked to deal with draughts coming in around windows and doors and cracked internal joints between frame and plaster, on uPVC windows, aluminium frames and composite doors.
In a village or hamlet like Maplehurst, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
A one-year guarantee comes as standard.
- Where
- Maplehurst (RH13)
- Region
- West Sussex
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need window mastic in Maplehurst
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
If you can see any of these, it’s time to have the joints looked at:
- Rain getting in at the frame or under the sill
- Whistling draughts around closed windows
- Black, perished sealant on frames
- Draughty joints inside around the window
For an older house near a landmark such as The Parish Church of St Andrew, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before booking anyone
- When the joint can take water or movement
- What guarantee comes with the work
- Which colour the sealant will be
- What preparation is included
How to look after the new joints
After the cure time, these simple habits help:
- Keep paint off silicone joints
- Repaint timber before it’s bare
- Keep jet washers away from the mastic
- Ventilate rooms so frames don’t stay wet inside
Keep the new mastic undisturbed while it cures, following the cure time we give you. Don’t point a pressure washer at the joints.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
Places near Maplehurst
Other services in Maplehurst
When something else is needed
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- A failed sealed unit that has misted up
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
What we seal
- Window sills
- uPVC windows
- Patio & French doors
- Composite doors
- Timber windows & doors
- Aluminium frames
What affects the cost of window mastic
We quote each job individually. These are the things that affect it:
- How many areas need sealing
- Whether there’s mould to deal with
- The old material and how stubborn it is
- The amount of work
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
To make quoting easier, please include:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- A few photos by email, if you can
- How many joints, rooms or windows are involved
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Common questions in Maplehurst
I let a flat near Christs Hospital station. Can you help?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Maplehurst in your area for window mastic?
Yes. Our work covers London and the South East, and Maplehurst is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
Can new window sealant be painted?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Tell us if you are decorating and we’ll choose accordingly.
What information do you need?
A short description and the location. If we need more, we’ll ask.
Does the work come with a guarantee?
Yes, with our 12-month guarantee. A yearly look at the joints helps them last.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Frames and glazing around Maplehurst
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like St Andrew's CofE Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Christs Hospital station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Maplehurst is about 4 miles south of Horsham, in West Sussex. Maplehurst gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. 371 places in West Sussex are on our list, large and small. We also work in Crawley, about 9 miles from Maplehurst.
We cover every part of the RH13 postcode area for window mastic. Local streets include Nuthurst Road, Park Lane and Copsale Road, and we cover them all. Nearby, we also carry out window mastic in Nuthurst (1 mile north), Southwater (2 miles north-west), Tower Hill (4 miles north-west), Brooks Green (4 miles west) and Horsham (4 miles north). We also work in nearby towns such as Crawley (9 miles north-east), Worthing (13 miles south), Haywards Heath (9 miles east), Burgess Hill (9 miles south-east), East Grinstead (15 miles north-east) and Shoreham-by-Sea (12 miles south).
What’s near Maplehurst
The nearest railway station is Christs Hospital station, about 3.8 miles north-west. A little further out are Horsham Hospital (4.3 miles north) and Christs Hospital School Museum (3.5 miles north-west). For a walk, there’s Knepp Wildland.
What we do, step by step
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house from start to finish. In a small place like Maplehurst, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Let us know if you’ve seen damp or leaks
- Tell us about any previous sealing or DIY attempts
Get a quote
For window mastic in Maplehurst, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.
Related advice
Why it’s worth doing now in Maplehurst
Resealing frames is a short job: it takes a morning for a couple of windows and a door. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Maplehurst, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
- A sealant colour to suit the surroundings
- Trusted Arbo and Everbuild sealants
Landlords, agents and businesses in Maplehurst
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.