East Sussex · England
Wannock Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Wannock and across East Sussex. Fully insured, ARBOMaster approved and guaranteed for a year.
- Draughts coming in around windows and doors
- Draughty joints inside around the window
- Black, perished sealant on frames
About our window mastic in Wannock
Over two decades of sealing frames has taught us which products suit which walls. We’re fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. Typical jobs include cracked sealant at the sill ends and water coming in at the bottom corners of a door, across uPVC windows, timber windows & doors and window sills.
Outdoor sealant needs dry, clean surfaces, so work on frames around Wannock is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Big or small, you get the same one-year guarantee in Wannock and across East Sussex.
- Place
- Wannock (BN26)
- Region
- East Sussex
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take a few hours for a handful of frames, longer for a whole house. In a small place like Wannock, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.
Advice
What affects the cost of window mastic
The quote reflects the job in front of us. We look at:
- Any working-time requirements on site
- Mould in or behind the old joints
- The old material and how stubborn it is
- The size of the job
The cost depends on how much there is to do, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What we need to know
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- The type of property
- Photos by email, if that is easy
- What the problem is, such as mould, gaps, leaks or cracking
For window mastic in Wannock, call 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
What happens if it’s left?
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. Where a wall is exposed, as many are in small places like Wannock, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email.
Why Wannock customers choose us
- We never seal over old sealant
- Homes, businesses and hotels
- Quality sealants from Arbo and Everbuild
- We agree the colour with you first
Other services in Wannock
Do you need window mastic in Wannock?
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.
It’s worth asking for a quote if you see:
- Gaps between the frame and the inside reveal
- Mastic that has split away from the wall
- Cracked sealant at the sill ends
- Cold air getting in at the frame edge
In the older streets around St Wilfrid, the joint between an old wall and a newer frame is normally the first place rain gets in.
Comparing quotes
- Whether they’re fully insured
- Which colour the sealant will be
- Whether the sealant suits the joint
- What the cure time is
Landlord and commercial work in Wannock
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.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Wannock questions
I let a flat near Polegate station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Can you do window mastic in Wannock?
Yes, Wannock is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Can I do it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.
Do you have sealant for grey or black windows?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Wannock, along with the rest of our area.
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.
Windows and doors in Wannock
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Alfriston Clergy House (about 3.4 miles west) are a reminder that the area around Wannock 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.
Letting a property close to Polegate station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Managing a site like Willingdon Community School? Then the mastic around its windows and doors needs looking after like any other building’s.
Wannock is about 3 miles north-west of Eastbourne, in East Sussex. We carry out window mastic for homes and businesses in Wannock and nearby, as part of our work across East Sussex. Our area takes in 289 places across East Sussex, from the larger towns to small villages. For nearby work, see our Brighton page.
Work in BN26 works the same way as everywhere else we cover. Local streets include Wannock Road, Lancing Way and Mortimer Gardens, and we cover them all. Nearby, we also carry out window mastic in Lower Willingdon (1 mile south-east), Filching (1 mile south-west), Polegate (1 mile north-east), Folkington (1 mile west) and Willingdon (1 mile south-east). We also work in nearby towns such as Eastbourne (3 miles south-east), Hastings (15 miles east), Bexhill-on-Sea (10 miles east), Seaford (6 miles south-west), Lewes (11 miles north-west) and Hailsham (4 miles north).
What’s near Wannock
We work in homes and buildings around Horse & Groom pub and Willingdon Primary School, among other places. Wannock’s nearest station is Polegate station, roughly 0.8 miles north-east of the centre. Well-known places in the area include Burlough Castle (2.8 miles west) and Filching Manor And Motor Museum (0.8 miles south-west). Not far away are Combe Hill.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
When it is not the sealant
In fairness, there are a few things sealant will not fix:
- Draughts through the window seals rather than the frame
- Faulty window hardware
- Soft or decayed wood in the frame
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Aluminium frames
- Window sills
- uPVC windows
- Composite doors
- Patio & French doors
- Timber windows & doors