Greater London · England
Loughborough Junction Sand Mastic
Sand mastic for Loughborough Junction, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughty sash windows at the surround
- Mastic that needs renewing before redecorating
- Cracked mastic round a front door frame
Quotes for sand mastic in Loughborough Junction
Your quote is based on your job. We take into account:
- Access and height
- Mould in or behind the old joints
- The number and length of the joints
- The old material and how stubborn it is
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it has been sealed before
- Photos by email, if that’s easy
- Where the job is, and your postcode
- What’s wrong with the joints now
Need a quote? Please call 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
How we handle sand mastic in Loughborough Junction
Sand mastic suits most period window surrounds. Newer frames usually get a flexible sealant instead, and we’ll talk through which suits your home. Common call-outs are for tired mastic found when preparing windows for paint and cracked mastic round a front door frame, across tenement windows, brick reveals and stone surrounds.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Loughborough Junction.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Where
- Loughborough Junction (SW9, SE5, SE24)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Loughborough Junction
Also in Loughborough Junction
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps and traditional guidance is to leave the new mastic unpainted. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
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?
- 180+ five-star Google reviews
- An ARBOMaster approved applicator
- We leave the area clean and tidy
- Homes, businesses and hotels
Take a look at our cost guide or customer reviews.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Loughborough Junction questions
Is Loughborough Junction in your area for sand mastic?
Yes. We work across London and the South East, and Loughborough Junction is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Loughborough Junction station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant.
Sand mastic in Loughborough Junction: local notes
Historic houses like Kingswood House (about 2.6 miles south) are a reminder that the area around Loughborough Junction has older buildings as well as new. 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.
If you look after a building such as St Saviour's Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as St Matthew's Camberwell, the joint between an old wall and a newer frame is normally the first place rain gets in.
Loughborough Junction is about 1 mile east of Stockwell, in Greater London. Every kind of property in Loughborough Junction can book us for sand mastic. Every job comes with our 12-month guarantee. Loughborough Junction is one of 764 places in Greater London we cover.
Work in SW9, SE5 and SE24 works the same way as everywhere else we cover. That includes homes and businesses on Minet Road, Heron Road and Lowth Road and the roads around them. Neighbouring places we cover for sand mastic include Angell Town (1 mile north-west), North Brixton (1 mile north-west), Stockwell (1 mile west), Brixton (1 mile south-west) and Little Portugal (1 mile north-west). We also work in nearby towns such as City of Westminster (4 miles north-west), Marylebone (4 miles north-west), Kensington (5 miles north-west), St Pancras (4 miles north), Shoreditch (4 miles north) and Walthamstow (9 miles north).
Around Loughborough Junction
In Loughborough Junction, that means homes and buildings near The Michael Tippett School, Max Roach Park and The Hospital and Home Tuition Sick Children's Service, among other places. There’s a railway station in Loughborough Junction itself: Loughborough Junction station. Other landmarks nearby include Gabriel's Wharf (2.9 miles north) and London General Cab Company Museum (0.6 miles north-west). The countryside around Loughborough Junction includes Battersea Park Lake and Centre for Wildlife Gardening.
What the job involves on each surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
What we can’t put right
Before booking, it’s worth knowing the limits too:
- Sashes that rattle, stick or will not open
- Decayed frames that need repair
- Damaged stone surrounds
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Loughborough Junction
- Tenement windows
- Brick reveals
- Stone surrounds
- Period & listed homes
- Timber door frames
- Sash and case windows
Signs you need sand mastic in Loughborough Junction
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
It’s worth asking for a quote if you see:
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Window mastic to renew ahead of painting
- Weathered mastic on the most exposed windows
Loughborough Junction is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
What to look for in a quote
- Is VAT in the price?
- What guarantee comes with the work
- What the cure time is
- How much experience the applicator has
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. For a job in Loughborough Junction, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we are working on
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or send us an email.