West Sussex · England
Window & door mastic in Findon, West Sussex
Mastic around window and door frames, sills and patio doors in Findon, with a one-year guarantee on every job. Call for a quick quote.
- A bead that doesn’t match the frame
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It generally takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Findon 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.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- 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
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
- For business premises, tell us about site rules or sign-in
Ask for a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
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Window mastic for homes and businesses in Findon
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. That is why the joint needs a flexible, low-modulus sealant rather than something rigid. If you’re dealing with hard, cracked sealant around windows and gaps between the frame and the inside reveal, we can help.
Outdoor sealant needs dry, clean surfaces, so work on frames around Findon is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You are covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Location
- Findon (BN14)
- Wider area
- West Sussex
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Around Findon, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Findon
- One-year guarantee on every job
- We’re fully insured
- An ARBOMaster approved applicator
- Domestic, commercial and hotel work
Take a look at how sealant jobs are priced and what customers say.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Repaint timber before it’s bare
- Clear any debris from frame drain holes
- Don’t paint over the silicone
- Avoid blasting the frames with a pressure washer
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Draughts get worse, not better. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
When to call us in Findon
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That is what backing rod is for.
The most common problems we see are:
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
- Cracked or shrunken mastic around the frame
- Gaps where the sill meets the wall
Rented homes near West Worthing station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Before you book anyone
- How the surfaces are prepared before sealing
- What the quote includes, VAT included or not
- How long the guarantee is
- Is the old sealant removed completely?
What we can’t put right
Before booking, it’s worth knowing the limits too:
- A frame that has rotted at the joint
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
If in doubt, call 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Composite doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- Window sills
Frames and glazing around Findon
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Ecclesden Manor (about 3.8 miles south-west) nearby, there’s older building stock in the area around Findon as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as St John the Baptist CofE Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near The Parish Church of St John the Baptist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Findon is about 3 miles north of Worthing, in West Sussex. Our applicators cover window mastic for homeowners, landlords and businesses in Findon. 371 places in West Sussex are on our list. There’s also a page for Brighton, about 12 miles away.
Here we cover the BN14 postcode area for window mastic. You will find streets such as High Street, Southview Road and Summerfields, and we cover them all. Close by, we work in High Salvington (1 mile south), Cote (2 miles south), Durrington (2 miles south), Clapham (2 miles south-west) and Patching (2 miles south-west). We also work in nearby towns such as Horsham (14 miles north), Worthing (3 miles south), Bognor Regis (13 miles south-west), Burgess Hill (14 miles north-east), Littlehampton (7 miles south-west) and Shoreham-by-Sea (6 miles east).
Near you in Findon
In Findon, that means homes and buildings near The Old Village House Hotel, among other places. Findon’s nearest station is West Worthing station, about 3.4 miles south of the centre. A little further out are Worthing Hospital (3.9 miles south-east) and Old Castle (2.9 miles south). Open spaces near Findon include Chanctonbury Hill.
Common questions in Findon
Can you do window mastic in Findon?
Yes. We work across London and the South East, and Findon is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will send you a clear quote.
Will you come out to Findon?
Yes, Findon is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you match the sealant to my frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Towns and villages near Findon
Also in Findon
Different surfaces, different methods
Aluminium frames
Coated aluminium needs a compatible sealant. Neutral-cure sealant is the safe choice.
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
What affects the quote in Findon
The quote reflects the job in front of us. We look at:
- The size of the job
- Any mould that needs treating
- The type of sealant required
- Access and height
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- If someone has resealed it before
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- Whether it’s a home or a business
For window mastic in Findon, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.