Brighton and Hove · England
Window Mastic in Falmer
Specialist window mastic for Falmer: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- White mastic on grey or black frames
- Mastic that has split away from the wall
- Cracked sealant at the sill ends
Window mastic in Falmer, done properly
A window frame and the wall around it expand and shrink at different rates. 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. If you have whistling draughts around closed windows and rain getting in at the frame or under the sill, we can put it right.
Outdoor sealant needs dry, clean surfaces, so work on frames around Falmer is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
You get a 12-month guarantee, the same in Falmer as everywhere else we work.
- Location
- Falmer (BN1)
- Wider area
- Brighton and Hove
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about window mastic in Falmer
Do you work for landlords with property near Falmer station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
Do you cover smaller places like Falmer?
Yes. Falmer is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do upstairs windows?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Can resealing stop a draught around my window?
It will if the frame joint is the problem. We find where the air is coming from before we reseal.
When is the sealant fully cured?
That depends on the sealant used, so please follow the time we give you when we finish.
Do you have insurance?
Yes. Full insurance covers our work.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What else we do in Falmer
Windows and doors in Falmer
With historic houses such as Preston Manor & Gardens (about 3.5 miles south-west) nearby, there’s older building stock in the area around Falmer as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to The Parish Church of St Lawrence include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For site and facilities teams at buildings such as Brighton Aldridge Community Academy, the mastic around its windows and doors needs looking after like any other building’s.
Falmer is about 3 miles north-east of Brighton, in Brighton and Hove. Our applicators cover window mastic for homeowners, landlords and businesses in Falmer and the surrounding area, as part of our work across Brighton and Hove. 30 places in Brighton and Hove are on our list, large and small.
Every address in BN1 is covered for window mastic, from the main roads to the quietest streets. If you need window mastic at a property on Middle Street, Park Street and Mill Street or anywhere close by, we can help. We also cover the places around Falmer: Kingston near Lewes (2 miles east), Iford (3 miles east), Ovingdean (3 miles south), Rottingdean (3 miles south) and Roedean (3 miles south). Further out, we also cover Brighton (3 miles south-west), Brighton and Hove (5 miles west), Hove (5 miles south-west), Carlton Hill (4 miles south-west), Hanover (3 miles south-west) and West Hill (4 miles south-west).
Around Falmer
Typical jobs here are in homes near The Swan Inn, University of Sussex Library and Stanmer Park. Falmer has its own railway station: Falmer station. Nearby you will also find Brighton And Hove Albion Football Club Museum (less than half a mile south-west) and Lewes Castle (3.8 miles east). Open spaces near Falmer include Bevendean Down and Newmarket Hill.
What affects the quote in Falmer
Every job gets its own quote. This is what makes a difference:
- When we can work, for business premises
- The number and length of the joints
- The old material and how stubborn it is
- The number of rooms or windows
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- How we’d reach the joints
- The type of property
- Roughly how big the job is
- Photos by email, if that’s easy
For window mastic in Falmer, ring 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.
Surface by surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal. Neutral-cure sealant is the safe choice.
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What we are called out for in Falmer
Plenty of failed mastic was poorly applied in the first place. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
Signs it’s time to call us include:
- Black, perished sealant on frames
- Gaps where the sill meets the wall
- Draughts coming in around windows and doors
- Rushed sealant from a window installation
For landlords with property near Falmer station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- Is the old sealant removed completely?
- How long the guarantee is
- What happens if the job turns out different
- When the joint can take water or movement
What we do, step by step
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a few frames, or a day or more for a whole house. Somewhere like Falmer needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Read more
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Keep solvents and bleach off the sealant
- Clear any debris from frame drain holes
- Keep timber frames painted
- Wipe condensation off the frames
A yearly look round the frames is enough. Cracks and lifting edges are easy to spot early.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
What sealant work cannot fix
It helps to know what we can’t do:
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
- Aluminium frames
- uPVC windows