Brighton and Hove · England
Window Mastic in Brighton
We cover Brighton for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Damp patches on the reveal after heavy rain
- Draughty joints inside around the window
- Whistling draughts around closed windows
What we do, step by step
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. The job usually takes most of a day for a typical house, less for a few frames, and we explain the cure time before we leave. Where a business in Brighton needs to stay open, out-of-hours working can be arranged, while home visits are arranged within our normal working hours, Monday to Saturday.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- 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
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
- Clear items away from the joints we’re working on
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Read more
Window mastic in Brighton
From a single sill to a whole house of windows, you’ll get a clear quote before work begins. To get one, phone 0345 464 0079 or drop us an email with the number of frames and any access details. Common call-outs are for draughts coming in around windows and doors and untidy mastic left by window fitters, across timber windows & doors, patio & French doors and aluminium frames.
Town-centre flats, shops and offices in Brighton have long runs of frames and glazing, often on upper floors. A cracked joint on an upper floor can let water in long before anyone spots it.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Brighton (BN1, BN2, BN3)
- Wider area
- Brighton and Hove
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Places near Brighton
More services for Brighton
Windows and doors in Brighton
Brighton is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Royal Pavilion (about 0.8 miles south-west) nearby, there’s older building stock in the area around Brighton 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.
Letting a property close to London Road (Brighton) station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For site and facilities teams at buildings such as Fairlight Primary School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as St Martin's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Brighton is in Brighton and Hove. Homes, rented property, offices and hotels in Brighton is covered for window mastic. Every job comes with our 12-month guarantee. Brighton is one of 30 places in Brighton and Hove where we work.
Work in BN1, BN2 and BN3 is quoted and booked the same way as anywhere else. We cover properties on London Road, Isetta Square and Pelham Square. Brighton sits on or near the A23 and A259. Neighbouring places we cover for window mastic include Hanover (1 mile south), Carlton Hill (1 mile south), West Hill (1 mile west), Hollingdean (1 mile north) and Seven Dials (1 mile west). Within a short drive, we also cover Brighton and Hove (3 miles west), Aldrington (3 miles west), Hangleton (3 miles west), Saltdean (4 miles south-east), East Saltdean (5 miles south-east) and Rottingdean (3 miles south-east). As one of the bigger places in Brighton and Hove, Brighton has homes, rented property and businesses of every kind.
Local landmarks in Brighton
Around Brighton, our work takes us to homes and buildings near Brighton Hove and Sussex Sixth Form College, William Clarke Park and Park Crescent pub and the streets around them. Brighton has its own railway station: London Road (Brighton) station. A little further out are Brighton General Hospital (0.7 miles east) and Old Police Cells Museum (1 mile south-west). Not far away are Newmarket Hill and Whitehawk Hill.
Your questions about window mastic in Brighton
I let a flat near London Road (Brighton) station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Does the coastal weather in Brighton affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Where do you work from?
We are based in Crawley, and we work across South East England, London and Scotland.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee, and we’re fully insured.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
How long will my window job take?
A few frames take a few hours, while a whole house takes longer. You’ll get a timescale with the quote.
Do you have insurance?
Yes. Full insurance covers our work.
What does window mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Surface by surface
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
uPVC windows
uPVC expands and contracts noticeably with temperature, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Penetrating damp from a failed cavity tray or render
- A sash or casement that won’t close properly
- Rotten timber, which needs a joiner first
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before booking.
What we seal
- uPVC windows
- Timber windows & doors
- Aluminium frames
- Patio & French doors
- Window sills
- Composite doors
What affects the quote in Brighton
The price is agreed before any work begins. It’s based on:
- Any working-time requirements on site
- The number and length of the joints
- How easy the joints are to reach
- Mould in or behind the old joints
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will go through it with you.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- Where the job is, and your postcode
- Pictures of the joints, sent by email
- If someone has resealed it before
For window mastic in Brighton, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Why deal with it now?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. In flats, shops and offices in Brighton, a failed joint can let water into the unit below or behind a wall, where it’s often found late and is bigger to put right.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why us?
- We leave the area clean and tidy
- One-year guarantee on every job
- Sealant colour chosen to suit
- Homes, businesses and hotels
Take a look at how sealant jobs are priced or customer reviews.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Do not aim a pressure washer at the joints
- Use gentle cleaners on frames and sealant
- Ventilate rooms so frames do not stay wet inside
- Check the mastic once a year
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.