East Sussex · England
Maresfield Window Mastic
Professional window mastic in and around Maresfield, with old sealant always removed completely and a 12-month guarantee.
- Sealant in the wrong colour for the frame
- Cracked or shrunken mastic around the frame
- Rain getting in at the frame or under the sill
Window mastic in Maresfield, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you’re dealing with cracked or shrunken mastic around the frame and a bead that doesn’t match the frame, we can help, on timber windows & doors, composite doors and uPVC windows alike.
In a village or hamlet like Maresfield, 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.
All of our work is guaranteed for twelve months.
- Where
- Maresfield (TN22)
- Region
- East Sussex
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we are called out for in Maresfield
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. If the sealant cannot stretch, it splits.
If you can see any of these, it’s time to have the joints looked at:
- Mastic that is falling out in pieces
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
For an older house near a landmark such as The Parish Church of St Bartholomew, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- Whether you can choose the colour
- Are they insured?
- Is the old sealant removed completely?
- Which sealant they’ll use, and why
Towns and villages near Maresfield
Other services in Maresfield
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What window mastic looks like in Maresfield
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Bonners CofE School? Then larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Uckfield station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Maresfield is about 2 miles north of Uckfield, in East Sussex. Homes, rented property, offices and hotels in Maresfield is covered for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 289 places across East Sussex. For nearby work, see our Crawley page (14 miles or so).
Postcode districts we cover here for window mastic: TN22. Whether your property is on High Street, Robian Close and Batts Bridge Road or anywhere close by, we can help. Other places close to Maresfield include Budlett's Common (1 mile south-east), Down Street (1 mile west), Ridgewood (3 miles south), Little Horsted (3 miles south) and Newick (3 miles south-west). We also work in nearby towns such as Seaford (15 miles south), Lewes (9 miles south-west), Hailsham (12 miles south-east), Crowborough (5 miles north-east), Newhaven (14 miles south) and Peacehaven (14 miles south).
What’s near Maresfield
We work in homes and buildings around West Park and Uckfield College. For rail, the closest station is Uckfield station, about 2 miles south of the centre. Well-known places in the area include Tickerage Castle (3.4 miles south-east) and Uckfield Community Hospital (2.3 miles south-east). Not far away are Brickfield Meadow.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Ventilate rooms so frames do not stay wet inside
- Repaint timber before it’s bare
- Check the mastic once a year
- Avoid harsh chemicals near the mastic
Try not to touch the new joint while it cures, for as long as we advise. Keep jet washers away from the frames.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. Resealing closes it.
What affects the cost of window mastic
The quote reflects the job in front of us. We look at:
- The size of the job
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
Asking for a quote
When you call or email, these details help:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Whether it’s a home or a business
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
When it isn’t the sealant
It helps to know what we cannot do:
- Damp problems in the wall away from the window
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Maresfield
- Timber windows & doors
- Patio & French doors
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
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.
FAQs for Maresfield
Do you work for landlords with property near Uckfield station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or email us with the address and what needs doing, and we will give you a clear price.
Do you cover smaller places like Maresfield?
Yes. Maresfield is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses and we’re fully insured.
When is the sealant fully cured?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can I paint over the new sealant?
Silicone generally won’t take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes most of a day for a typical house, less for a few frames. Somewhere like Maresfield needs a little journey planning: 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.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- 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.
Preparing for the visit
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved before giving you a price.