Greater London · England
Sand Mastic in Catford
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Catford, with a one-year guarantee on every job. Call for a quick quote.
- Failed mastic on an exposed elevation
- Gaps where the frame meets the masonry
- Old sand mastic that has cracked, crumbled or fallen out
What happens on the day
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It usually takes anything from a few hours to a full day, depending on how many windows. In Catford, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
Getting a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
About our sand mastic in Catford
Sand mastic suits most period window surrounds. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. We work on brick reveals, period & listed homes and timber door frames, and people most often call us about patchy fillers round a sash window and mastic round period door frames that has failed.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, letting in draughts and water.
There’s a 12-month guarantee on every job, large or small.
- Where
- Catford (SE6, BR1)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why act early in Catford
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why Catford clients choose us
- Full insurance on every job
- Homes, businesses and hotels
- Approved under the ARBOMaster scheme
- Arbo and Everbuild products
Take a look at what affects the cost or customer reviews.
Landlords, agents and businesses in Catford
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Catford: your questions answered
Can you do sand mastic in Catford?
Yes, Catford is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Is parking an issue for sand mastic in Catford?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or send us an email.
Can tenants book the work?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
What guarantee comes with the work?
All our work has a one-year guarantee, and we’re fully insured.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we are fully insured.
What sand mastic looks like in Catford
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Holy Cross Catholic Primary School, its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near Church of St Laurence and Community Centre, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Catford is about 5 miles east of Streatham, in Greater London. Our applicators cover sand mastic for homes and businesses in Catford and nearby, as part of our work across Greater London. Catford is one of 764 towns and villages in Greater London we cover.
Here we cover the SE6 and BR1 postcode area for sand mastic. Local streets include Bargery Road, Penerley Road and Inchmery Road. Close by, we work in Bellingham (1 mile south-west), Southend (1 mile south-west), Ladywell (1 mile north), Hither Green (1 mile north-east) and Bell Green (1 mile south-west). Within a short drive, we also cover London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles north-west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Around Catford
Locally, jobs take us to homes and businesses close to The London & Rye pub, Trinity Church of England School and Forster Memorial Park. Catford’s nearest station is Catford Bridge station, roughly 0.5 miles north-west of the centre. Nearby you will also find Greenwich Castle (2.6 miles north) and University Hospital Lewisham (0.8 miles north). Green spaces nearby include Downham Woodland Walk and Knight's Hill.
Quotes for sand mastic in Catford
The quote reflects the job in front of us. We take into account:
- Which sealant suits the joint
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Asking for a quote
There’s no need for technical detail. Just tell us:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Whether it’s a home or a business
- Where the property is
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Check the mastic when you check the paintwork
- Avoid patching sand mastic with silicone
- Plan mastic work ahead of painting
- Ask the planning authority about consent for listed or conservation-area homes
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Planning or listed building consent (your local planning authority decides)
- Sashes that need overhauling
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Where we work in Catford
- Timber door frames
- Period & listed homes
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
More services for Catford
Do you need sand mastic in Catford?
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
People usually contact us after spotting something like this:
- Failed mastic on an exposed elevation
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
As a London address, Catford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Who turns up on the day
- How long the guarantee is
- Are they insured?
- Is VAT in the price?