West Sussex · England
Window & door mastic in Worthing, West Sussex
Specialist window mastic for Worthing: careful preparation, the right product and tidy work. Ask us for a quick quote.
- White mastic on grey or black frames
- Water coming in at the bottom corners of a door
- Draughty joints inside around the window
Window mastic for homes and businesses in Worthing
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. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you are dealing with sealant in the wrong colour for the frame and leaking joints at the ends of sills, we can put it right.
Plenty of homes in Worthing are rented, and windows are easy to overlook between tenancies. Gaps around a frame let in draughts and water, and tenants notice.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Worthing (BN13, BN11, BN14, BN12)
- Wider area
- West Sussex
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Worthing questions
Does living near the coast affect window mastic in Worthing?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Can you help a landlord with a rental near West Worthing station?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Can you seal the gap between the frame and the plaster indoors?
Yes. Inside, the joint between frame and plaster is sealed neatly.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes most of a day for a typical house, less for a few frames, depending on how much there is to do. In Worthing, we work in everything from flats and family homes to offices and hotels. Whichever it is, tell us how to get in, where to park and where the work is.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Before we arrive
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, ring 0345 464 0079 or email us.
Read more
Surface by surface
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
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.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Nearby places to Worthing
More services for Worthing
What affects the quote in Worthing
Your quote is based on your job. We take into account:
- The number of rooms or windows
- Whether there’s mould to deal with
- Access and height
- How much old sealant there is and how hard it is to remove
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- If someone has resealed it before
- Where the job is, and your postcode
- The type of property
We quote each job on its own, so start by telling us what you need. Just ring 0345 464 0079 or drop us an email with the details and send pictures if you have them.
Frames and glazing around Worthing
Worthing is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Ecclesden Manor (about 3.1 miles west) nearby, there’s older building stock in the area around Worthing as well as newer homes. 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.
For landlords with property near West Worthing station, renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Durrington High School? Then the mastic around its windows and doors needs looking after like any other building’s.
Worthing is in West Sussex. Wherever you are in the BN13 postcode area, we can carry out window mastic at your property. Worthing is one of 371 places in West Sussex we cover for window mastic. There’s also a page for Brighton, roughly 12 miles from Worthing.
We work across BN13, BN11, BN14 and BN12 for window mastic and the streets around it. Whether your property is on Church Road, Market Place and High Street or anywhere close by, our applicators can take on the job. With the A24 and A27 close by, Worthing is simple for us to get to for window mastic. Other places close to Worthing include Salvington (1 mile north), Offington (1 mile north-east), Broadwater (1 mile east), Findon Valley (2 miles north) and East Worthing (2 miles east). We also work in nearby towns such as Bognor Regis (13 miles west), Burgess Hill (15 miles north-east), Littlehampton (6 miles west), Shoreham-by-Sea (6 miles east), Lancing (3 miles east) and Rustington (5 miles west). Worthing is among the bigger towns we cover in West Sussex.
Near you in Worthing
In Worthing, that means homes and buildings near The George And Dragon Public House, Durrington Minature Railway and Thomas A Becket First School, among other places. For rail, the closest station is West Worthing station, about 0.5 miles south-east. A little further out are The Acre (1.2 miles south-east) and Old Castle (less than half a mile east). Not far away are Highdown Hill and Widewater Lagoon.
Common problems we fix in Worthing
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Any of these means the joints need attention:
- Gaps between the frame and the inside reveal
- White mastic on grey or black frames
- Cold air getting in at the frame edge
- Mastic that’s falling out in pieces
If you live in an older home near St Andrew's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- Which colour the sealant will be
- The length of the guarantee
- What product goes in the joint
- How much experience the applicator has
Landlord and commercial work in Worthing
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
What happens if it’s left?
Resealing frames is a short job: it takes most of a day for a typical house, less for a few frames. Wait for damp to appear and there may be plaster and decorating to sort out too. For landlords in Worthing, failed sealant soon turns into tenant complaints about mould, damp or draughts. It’s simpler to sort between tenants than in the middle of a let.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
Why choose Mr Mastic in Worthing
- White, clear, grey or another colour, product permitting
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
- Full insurance on every job
Take a look at how sealant jobs are priced or our reviews.