Greater London · England
Sand Mastic in Surbiton
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Surbiton, with a 12-month guarantee on every job. Call for a quick quote.
- Gaps round a timber door in stone or brick
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
How we handle sand mastic in Surbiton
Across Surbiton, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you’re dealing with cement or filler used on old window joints that has cracked and draughty sash windows at the surround, we can help, whatever the surface.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking, and access in Surbiton is something to talk through when you book.
A 12-month guarantee comes as standard.
- Location
- Surbiton (KT6, KT5, KT1)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need sand mastic in Surbiton?
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Signs it’s time to call us include:
- Crumbling sand mastic round a window
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Wind and rain getting in round a sash window
Rented homes near Surbiton station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- What guarantee comes with the work
- What the quote includes, VAT included or not
- How much experience the applicator has
- Whether they seal over old material or remove it
Also near Surbiton
Also in Surbiton
Landlords, agents and businesses in Surbiton
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
For anyone letting property in or around Surbiton, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
How we quote for sand mastic
There’s no set price list, because jobs vary so much. What we look at:
- The type of sealant required
- How much there is to do
- Mould in or behind the old joints
- The number of rooms or windows
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
What to tell us when you ask for a quote:
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Any access issues, like height or stairs
- Photos by email, if that’s easy
If you’re in Surbiton and need sand mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Questions from Surbiton
Can parking be tricky for a visit in Surbiton?
Parking in Surbiton, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do you cover Surbiton for sand mastic?
Yes, Surbiton is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Surbiton.
Do you take out the old sealant first?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
I rent my home. Can I book you?
Of course. Check with your landlord; we can send the quote to them too.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They decide whether consent is needed.
How much does sand mastic cost in Surbiton?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or email us with a short description of the job.
How it works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. In a London area like Surbiton, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We check the window surrounds and agree which joints need renewing.
- 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
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work.
Read more
Looking after it afterwards
So the new joints stay in good condition:
- Inspect the joints round the windows every year or so
- Leave the new mastic unpainted
- Make sure water runs off the sill
- Check with your local planning authority if your home is listed
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Leave it or put it right?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why choose Mr Mastic in Surbiton
- One-year guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- Arbo and Everbuild products
Read our cost guide or our reviews.
Surbiton homes and the weather
With historic houses such as Hampton Court Palace (about 1.8 miles north-west) nearby, there’s older building stock in the area around Surbiton as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
Schools such as Lime Tree Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Surbiton is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Surbiton is about 4 miles south-west of Wimbledon, in Greater London. Surbiton gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Greater London, we cover 764 places, and Surbiton is one of them. London is on our list too, around 12 miles away.
Jobs for sand mastic in KT6, KT5 and KT1 works the same way as everywhere else we cover. That includes homes and businesses on St Andrew's Square, South Bank and Hazelwood Court. Being close to the A240 and A3210, Surbiton is easy for our applicators to reach. Close by, we work in Berrylands (1 mile east), Tolworth (1 mile south-east), Old Malden (2 miles south-east), Chessington (2 miles south) and Worcester Park (2 miles south-east). We also work in nearby towns such as London (12 miles north-east), City of Westminster (11 miles north-east), Marylebone (11 miles north-east), Kensington (9 miles north-east), St Pancras (12 miles north-east) and Shoreditch (13 miles north-east).
Local landmarks in Surbiton
Locally, jobs take us to homes and businesses close to Shrewsbury House School, The Hollyfield School and Sixth Form Centre and Coronation Hall pub and the streets around them. Surbiton has its own railway station: Surbiton station. Other landmarks nearby include Tolworth Hospital (1 mile south-east) and Metropolitan Police Mounted Branch Museum (2.2 miles west). Not far away are The Wood and The Lake.