Brighton and Hove · England
Sand mastic for sash & case windows in Hollingbury, Brighton and Hove
Our applicators work in Hollingbury on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
Do you need sand mastic in Hollingbury?
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Keep an eye out for these signs:
- Failed mastic on an exposed elevation
- Cracked mastic round a front door frame
- Silicone on a period window that looks wrong
- Gaps between timber frames and stone or brick
Managing a site like Carden Nursery and Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- What product goes in the joint
- What the cure time is
- What guarantee comes with the work
- How the colour is chosen
Sand mastic for homes and businesses in Hollingbury
We work across Hollingbury renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on timber door frames, sash and case windows and period & listed homes, and the jobs we see most are gaps where the frame meets the masonry and old sand mastic that has cracked, crumbled or fallen out.
In a smaller place like Hollingbury, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. That is hard on the mastic around frames and sills.
There’s a 12-month guarantee on every job.
- Location
- Hollingbury (BN1)
- Region
- Brighton and Hove
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the work takes anything from a few hours to a full day, depending on how many windows for a typical job. For a job in Hollingbury, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Try not to wet indoor joints just before the visit
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
Get a quote
For a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
Why deal with it now?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. Homes in smaller places like Hollingbury can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Why us?
- Any old sealant cut out fully, not covered over
- We’re fully insured
- Tidy, careful work
- Approved under the ARBOMaster scheme
Read how sealant jobs are priced and our reviews.
Hollingbury questions
Do you work for landlords with property near Moulsecoomb station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Does living near the coast affect sand mastic in Hollingbury?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little.
Are you insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
What does sand mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Do you come to Hollingbury?
Yes. We’re based in Crawley and work across South East England, London and Scotland, Hollingbury included.
Can new sealant go over the old?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we will quote it together.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Damaged stone surrounds
- Cracked or broken glass
- Decayed frames that need repair
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Stone surrounds
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
- Period & listed homes
How we quote for sand mastic
Every job gets its own quote. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- The product the joint needs
- Working hours on commercial sites
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
What we need to know
You don’t need to know the technical terms. Just tell us:
- How we’d reach the joints
- The type of property
- A few pictures by email, if you can
- If someone has resealed it before
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before we start.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Avoid heavy scraping on the mastic joint
- Don’t run silicone over sand mastic
- Look over the window mastic once a year
- Find out about consent before window work on a listed home
Don’t touch or press the mastic while it hardens. It skins over quickly, but takes longer to harden fully.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Sand mastic in Hollingbury: local notes
Hollingbury 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 older windows and doors, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Preston Manor & Gardens, about 1.4 miles south-west, is one of the historic houses in the wider area around Hollingbury. If you let a flat or house near Moulsecoomb station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Hollingbury is about 2 miles north of Brighton, in Brighton and Hove. From the centre of Hollingbury to the outskirts, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Hollingbury is one of 30 places in Brighton and Hove we cover.
Work in BN1 works the same way as everywhere else we cover. We cover properties on Keymer Road, Warmdene Road and Carden Avenue and the roads around them. Neighbouring places we cover for sand mastic include Patcham (1 mile west), Withdean (1 mile south-west), Hollingdean (1 mile south), Preston (1 mile south-west) and Westdene (1 mile west). We also work in nearby towns such as Brighton and Hove (3 miles south-west), Hove (3 miles south-west), Brunswick (3 miles south), Kemptown (3 miles south), Whitehawk (3 miles south-east) and Aldrington (3 miles south-west).
Near you in Hollingbury
Around Hollingbury, our work takes us to homes and buildings near University of Sussex Library, Patcham High School and Wild Park. Nearby too are The Dharma Primary School (0.5 miles north-west) and County Oak pub (within half a mile north-east). For rail, the closest station is Moulsecoomb station, about 1.1 miles south-east. Well-known places in the area include Brighton General Hospital (2.1 miles south) and Churchill Square (2.6 miles south). Green spaces nearby include Ladies Mile and Ditchling Beacon.
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.