Brighton and Hove · England
Sand mastic for sash & case windows in Seven Dials, Brighton and Hove
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Seven Dials, with a one-year guarantee on every job. Ask us for a quote.
- Window mastic to renew ahead of painting
- Old cement repairs round a window that have failed
- Mastic worn away on windows facing the weather
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Whether work needs listed building consent
- Sash cords, weights and draught-proofing of the sashes
- Timber that has rotted
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Sash and case windows
- Stone surrounds
About our sand mastic in Seven Dials
On many period windows, sand mastic looks right and suits the building. Newer frames normally get a flexible sealant instead and we’ll explain which is best for yours. Common call-outs are for draughty sash windows at the surround and open joints round the window box, across sash and case windows, stone surrounds and timber door frames.
Around Seven Dials, conservatories, garden rooms and patio doors are often part of the house. Their glazing joints and frame seals are as much a part of the job as the windows.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Seven Dials (BN1, BN3, BN50)
- Region
- Brighton and Hove
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for sand mastic in Seven Dials
You will get a clear quote before we start. It takes into account:
- Working hours on commercial sites
- How easy the joints are to reach
- Which sealant suits the joint
- Whether there’s mould to deal with
What you pay reflects the work, not guesswork. That is why we ask about the job first.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- Roughly how big the job is
- A few pictures by email, if you can
- How we’d reach the joints
- Whether it has been sealed before
We do not publish a price list. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.
The process
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a single window, longer for several. Parking around Seven Dials is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
- Mention any parking rules near the property
Getting a quote
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we will take it from there.
Read more
Why it’s worth doing now in Seven Dials
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Around Seven Dials, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
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.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- 180+ five-star Google reviews
- ARBOMaster approved applicator
- More than 20 years in sealant work
See what affects the cost and customer reviews.
Should I try it myself first?
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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Seven Dials homes and the weather
Seven Dials is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Royal Pavilion (about 0.7 miles south-east) are a reminder that the area around Seven Dials 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 is traditional sand mastic.
If you let a flat or house near Brighton station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near St Luke's Church Prestonville, the joint between an old wall and a newer frame is normally the first place rain gets in.
Seven Dials is about 1 mile west of Brighton, in Brighton and Hove. Seven Dials gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 30 places across Brighton and Hove, large and small.
Jobs for sand mastic in BN1, BN3 and BN50 works the same way as everywhere else we cover. You’ll find streets such as Dyke Road, Powis Road and York Avenue, all of which we cover. Seven Dials sits on or near the A2010, which makes travel easy. Other places close to Seven Dials include West Hill (1 mile south-east), Prestonville (1 mile north), Brunswick (1 mile south-west), Brighton (1 mile east) and Hanover (1 mile east). Larger places within reach include Hangleton (3 miles north-west), Saltdean (5 miles east), East Saltdean (6 miles east), Roedean (3 miles south-east), Rottingdean (4 miles east) and Ovingdean (3 miles east). Being one of Brighton and Hove’s larger places, Seven Dials has every kind of property, from flats to offices.
Landmarks near Seven Dials
Locally, jobs take us to homes and businesses close to Stanford Junior School, The Cow pub and St. Ann's Well Gardens and the streets around them. There’s a railway station in Seven Dials itself: Brighton station. Other landmarks nearby include Montefiore Hospital (under half a mile west) and Brighton Transport Museum (0.6 miles north). For a walk, there’s Newmarket Hill and Whitehawk Hill.
Questions from Seven Dials
I let a flat near Brighton station. Can you help?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you cover smaller places like Seven Dials?
Yes. Seven Dials is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is it messy?
We keep the work tidy. Nearby surfaces are protected.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.
Should I use sand mastic or silicone?
That depends on your windows. On many period windows, sand mastic looks right and suits the building and newer frames normally get a flexible sealant.
Which products 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.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Surface by surface
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. It’s renewed by hand.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Landlords, agents and businesses in Seven Dials
Landlords and letting agents in Seven Dials can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.