Brighton and Hove · England
Sand mastic for sash & case windows in Stanmer, Brighton and Hove
Window and door surrounds in Stanmer need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Tired mastic found when preparing windows for paint
- Patchy fillers round a sash window
- Open joints round the window box
Sand mastic in Stanmer, done properly
We work across Stanmer renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We are often asked to deal with draughts and rain around sash boxes and cement or filler used on old window joints that has cracked, on sash and case windows, stone surrounds and timber door frames.
Homes in small places like Stanmer often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Where
- Stanmer (BN1)
- Wider area
- Brighton and Hove
- Cover
- 12 months on all our work
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
At the end, we look at the finished work together and explain the cure time. The visit itself usually takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. For a village or hamlet like Stanmer, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
- Let us know if you’ve seen damp or leaks
Ask for a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Advice
Your questions about sand mastic in Stanmer
Can you help a landlord with a rental 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 drop us an email with the details for a clear quote.
Can you do sand mastic in Stanmer?
Yes, Stanmer is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Is sand mastic better than silicone for my windows?
We will help you decide. Period homes often look best with sand mastic, and modern sealants suit newer frames.
Do you offer different sealant colours?
Generally, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before we start.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Is it possible to take out silicone and use sand mastic instead?
Yes. The silicone is cut out and the joint cleaned, then point it with sand mastic.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we’ll talk you through it.
Towns and villages near Stanmer
What else we do in Stanmer
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Why act early in Stanmer
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic is the traditional material and blends with the stone or brick. Older cottages and farmhouses around Stanmer can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What you get with us
- Every job guaranteed for a year
- Quality sealants from Arbo and Everbuild
- Full insurance on every job
- Domestic, commercial and hotel work
Read how sealant jobs are priced and customer reviews.
Do you need sand mastic in Stanmer?
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
The problems people usually mention when they call are:
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
Rented homes near Falmer station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- How long to leave it before use
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not
- Are they insured?
Stanmer homes and the weather
With historic houses such as Preston Manor & Gardens (about 2.8 miles south-west) nearby, there’s older building stock in the area around Stanmer 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Stanmer Church, 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 Coldean Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Stanmer is about 3 miles north-east of Brighton, in Brighton and Hove. Our applicators cover sand mastic for homes and businesses in Stanmer. Stanmer is one of 30 places in Brighton and Hove we cover.
Jobs for sand mastic in BN1 is quoted and booked the same way as anywhere else. We also cover the places around Stanmer: Hollingbury (1 mile south-west), Moulsecoomb (2 miles south), Bevendean (2 miles south), Patcham (2 miles west) and Hollingdean (2 miles south-west). Larger places within reach include Brighton (3 miles south-west), Brighton and Hove (4 miles south-west), Hove (4 miles south-west), Carlton Hill (3 miles south), Hanover (3 miles south) and West Hill (3 miles south-west).
Landmarks near Stanmer
In Stanmer, that means homes and buildings near Stanmer Park, University of Sussex Library and Brighton Aldridge Community Academy. For rail, the closest station is Falmer station, about 0.8 miles south-east of the centre. Other landmarks nearby include Clayton Castle (3.4 miles north-west) and Churchill Square (3.7 miles south-west). Not far away are Ditchling Beacon and Ladies Mile.
What affects the cost of sand mastic
The quote reflects the job in front of us. We take into account:
- The number and length of the joints
- When we can work, for business premises
- The number of rooms or windows
- How easy the joints are to reach
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Any access issues, like height or stairs
We quote each job on its own. Just ring 0345 464 0079 or email us with the details.
Landlords, agents and businesses in Stanmer
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Avoid patching sand mastic with silicone
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Clear gutters so water doesn’t pour onto the windows
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.